1579 lines
72 KiB
C
1579 lines
72 KiB
C
/*
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* 86Box A hypervisor and IBM PC system emulator that specializes in
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* running old operating systems and software designed for IBM
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* PC systems and compatibles from 1981 through fairly recent
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* system designs based on the PCI bus.
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*
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* This file is part of the 86Box distribution.
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*
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* Emulation of the IBM PCjr.
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*
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*
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*
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* Authors: Sarah Walker, <https://pcem-emulator.co.uk/>
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* Miran Grca, <mgrca8@gmail.com>
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* Fred N. van Kempen, <decwiz@yahoo.com>
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*
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* Copyright 2008-2019 Sarah Walker.
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* Copyright 2016-2019 Miran Grca.
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* Copyright 2017-2019 Fred N. van Kempen.
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*/
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#include <stdarg.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <math.h>
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#include <wchar.h>
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#define HAVE_STDARG_H
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#include <86box/86box.h>
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#include "cpu.h"
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#include <86box/timer.h>
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#include <86box/device.h>
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#include <86box/cassette.h>
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#include <86box/io.h>
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#include <86box/nmi.h>
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#include <86box/pic.h>
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#include <86box/pit.h>
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#include <86box/mem.h>
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#include <86box/device.h>
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#include <86box/gameport.h>
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#include <86box/serial.h>
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#include <86box/keyboard.h>
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#include <86box/rom.h>
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#include <86box/fdd.h>
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#include <86box/fdc.h>
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#include <86box/sound.h>
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#include <86box/snd_speaker.h>
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#include <86box/snd_sn76489.h>
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#include <86box/video.h>
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#include <86box/vid_cga_comp.h>
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#include <86box/machine.h>
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#include <86box/plat_unused.h>
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#define PCJR_RGB 0
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#define PCJR_COMPOSITE 1
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#define STAT_PARITY 0x80
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#define STAT_RTIMEOUT 0x40
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#define STAT_TTIMEOUT 0x20
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#define STAT_LOCK 0x10
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#define STAT_CD 0x08
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#define STAT_SYSFLAG 0x04
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#define STAT_IFULL 0x02
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#define STAT_OFULL 0x01
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typedef struct pcjr_t {
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/* Video Controller stuff. */
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mem_mapping_t mapping;
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uint8_t crtc[32];
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int crtcreg;
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int array_index;
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uint8_t array[32];
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int array_ff;
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int memctrl;
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uint8_t stat;
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int addr_mode;
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uint8_t *vram;
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uint8_t *b8000;
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int linepos;
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int displine;
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int sc;
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int vc;
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int dispon;
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int con;
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int coff;
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int cursoron;
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int blink;
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int vsynctime;
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int fullchange;
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int vadj;
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uint16_t ma;
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uint16_t maback;
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uint64_t dispontime;
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uint64_t dispofftime;
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pc_timer_t timer;
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int firstline;
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int lastline;
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int composite;
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int apply_hd;
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/* Keyboard Controller stuff. */
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int latched;
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int data;
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int serial_data[44];
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int serial_pos;
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uint8_t pa;
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uint8_t pb;
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pc_timer_t send_delay_timer;
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} pcjr_t;
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/*PCjr keyboard has no escape scancodes, and no scancodes beyond 54
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Map right alt to 54h (FN) */
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const scancode scancode_pcjr[512] = {
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// clang-format off
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{ .mk = { 0 }, .brk = { 0 } }, /* 000 */
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{ .mk = { 0x01, 0 }, .brk = { 0x81, 0 } }, /* 001 */
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{ .mk = { 0x02, 0 }, .brk = { 0x82, 0 } }, /* 002 */
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{ .mk = { 0x03, 0 }, .brk = { 0x83, 0 } }, /* 003 */
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{ .mk = { 0x04, 0 }, .brk = { 0x84, 0 } }, /* 004 */
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{ .mk = { 0x05, 0 }, .brk = { 0x85, 0 } }, /* 005 */
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{ .mk = { 0x06, 0 }, .brk = { 0x86, 0 } }, /* 006 */
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{ .mk = { 0x07, 0 }, .brk = { 0x87, 0 } }, /* 007 */
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{ .mk = { 0x08, 0 }, .brk = { 0x88, 0 } }, /* 008 */
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{ .mk = { 0x09, 0 }, .brk = { 0x89, 0 } }, /* 009 */
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{ .mk = { 0x0a, 0 }, .brk = { 0x8a, 0 } }, /* 00a */
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{ .mk = { 0x0b, 0 }, .brk = { 0x8b, 0 } }, /* 00b */
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{ .mk = { 0x0c, 0 }, .brk = { 0x8c, 0 } }, /* 00c */
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{ .mk = { 0x0d, 0 }, .brk = { 0x8d, 0 } }, /* 00d */
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{ .mk = { 0x0e, 0 }, .brk = { 0x8e, 0 } }, /* 00e */
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{ .mk = { 0x0f, 0 }, .brk = { 0x8f, 0 } }, /* 00f */
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{ .mk = { 0x10, 0 }, .brk = { 0x90, 0 } }, /* 010 */
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{ .mk = { 0x11, 0 }, .brk = { 0x91, 0 } }, /* 011 */
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{ .mk = { 0x12, 0 }, .brk = { 0x92, 0 } }, /* 012 */
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{ .mk = { 0x13, 0 }, .brk = { 0x93, 0 } }, /* 013 */
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{ .mk = { 0x14, 0 }, .brk = { 0x94, 0 } }, /* 014 */
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{ .mk = { 0x15, 0 }, .brk = { 0x95, 0 } }, /* 015 */
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{ .mk = { 0x16, 0 }, .brk = { 0x96, 0 } }, /* 016 */
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{ .mk = { 0x17, 0 }, .brk = { 0x97, 0 } }, /* 017 */
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{ .mk = { 0x18, 0 }, .brk = { 0x98, 0 } }, /* 018 */
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{ .mk = { 0x19, 0 }, .brk = { 0x99, 0 } }, /* 019 */
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{ .mk = { 0x1a, 0 }, .brk = { 0x9a, 0 } }, /* 01a */
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{ .mk = { 0x1b, 0 }, .brk = { 0x9b, 0 } }, /* 01b */
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{ .mk = { 0x1c, 0 }, .brk = { 0x9c, 0 } }, /* 01c */
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{ .mk = { 0x1d, 0 }, .brk = { 0x9d, 0 } }, /* 01d */
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{ .mk = { 0x1e, 0 }, .brk = { 0x9e, 0 } }, /* 01e */
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{ .mk = { 0x1f, 0 }, .brk = { 0x9f, 0 } }, /* 01f */
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{ .mk = { 0x20, 0 }, .brk = { 0xa0, 0 } }, /* 020 */
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{ .mk = { 0x21, 0 }, .brk = { 0xa1, 0 } }, /* 021 */
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{ .mk = { 0x22, 0 }, .brk = { 0xa2, 0 } }, /* 022 */
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{ .mk = { 0x23, 0 }, .brk = { 0xa3, 0 } }, /* 023 */
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{ .mk = { 0x24, 0 }, .brk = { 0xa4, 0 } }, /* 024 */
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{ .mk = { 0x25, 0 }, .brk = { 0xa5, 0 } }, /* 025 */
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{ .mk = { 0x26, 0 }, .brk = { 0xa6, 0 } }, /* 026 */
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{ .mk = { 0x27, 0 }, .brk = { 0xa7, 0 } }, /* 027 */
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{ .mk = { 0x28, 0 }, .brk = { 0xa8, 0 } }, /* 028 */
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{ .mk = { 0x29, 0 }, .brk = { 0xa9, 0 } }, /* 029 */
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{ .mk = { 0x2a, 0 }, .brk = { 0xaa, 0 } }, /* 02a */
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{ .mk = { 0x2b, 0 }, .brk = { 0xab, 0 } }, /* 02b */
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{ .mk = { 0x2c, 0 }, .brk = { 0xac, 0 } }, /* 02c */
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{ .mk = { 0x2d, 0 }, .brk = { 0xad, 0 } }, /* 02d */
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{ .mk = { 0x2e, 0 }, .brk = { 0xae, 0 } }, /* 02e */
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{ .mk = { 0x2f, 0 }, .brk = { 0xaf, 0 } }, /* 02f */
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{ .mk = { 0x30, 0 }, .brk = { 0xb0, 0 } }, /* 030 */
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{ .mk = { 0x31, 0 }, .brk = { 0xb1, 0 } }, /* 031 */
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{ .mk = { 0x32, 0 }, .brk = { 0xb2, 0 } }, /* 032 */
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{ .mk = { 0x33, 0 }, .brk = { 0xb3, 0 } }, /* 033 */
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{ .mk = { 0x34, 0 }, .brk = { 0xb4, 0 } }, /* 034 */
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{ .mk = { 0x35, 0 }, .brk = { 0xb5, 0 } }, /* 035 */
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{ .mk = { 0x36, 0 }, .brk = { 0xb6, 0 } }, /* 036 */
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{ .mk = { 0x37, 0 }, .brk = { 0xb7, 0 } }, /* 037 */
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{ .mk = { 0x38, 0 }, .brk = { 0xb8, 0 } }, /* 038 */
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{ .mk = { 0x39, 0 }, .brk = { 0xb9, 0 } }, /* 039 */
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{ .mk = { 0x3a, 0 }, .brk = { 0xba, 0 } }, /* 03a */
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{ .mk = { 0x3b, 0 }, .brk = { 0xbb, 0 } }, /* 03b */
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{ .mk = { 0x3c, 0 }, .brk = { 0xbc, 0 } }, /* 03c */
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{ .mk = { 0x3d, 0 }, .brk = { 0xbd, 0 } }, /* 03d */
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{ .mk = { 0x3e, 0 }, .brk = { 0xbe, 0 } }, /* 03e */
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{ .mk = { 0x3f, 0 }, .brk = { 0xbf, 0 } }, /* 03f */
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{ .mk = { 0x40, 0 }, .brk = { 0xc0, 0 } }, /* 040 */
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{ .mk = { 0x41, 0 }, .brk = { 0xc1, 0 } }, /* 041 */
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{ .mk = { 0x42, 0 }, .brk = { 0xc2, 0 } }, /* 042 */
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{ .mk = { 0x43, 0 }, .brk = { 0xc3, 0 } }, /* 043 */
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{ .mk = { 0x44, 0 }, .brk = { 0xc4, 0 } }, /* 044 */
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{ .mk = { 0x45, 0 }, .brk = { 0xc5, 0 } }, /* 045 */
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{ .mk = { 0x46, 0 }, .brk = { 0xc6, 0 } }, /* 046 */
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{ .mk = { 0x47, 0 }, .brk = { 0xc7, 0 } }, /* 047 */
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{ .mk = { 0x48, 0 }, .brk = { 0xc8, 0 } }, /* 048 */
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{ .mk = { 0x49, 0 }, .brk = { 0xc9, 0 } }, /* 049 */
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{ .mk = { 0x4a, 0 }, .brk = { 0xca, 0 } }, /* 04a */
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{ .mk = { 0x4b, 0 }, .brk = { 0xcb, 0 } }, /* 04b */
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{ .mk = { 0x4c, 0 }, .brk = { 0xcc, 0 } }, /* 04c */
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{ .mk = { 0x4d, 0 }, .brk = { 0xcd, 0 } }, /* 04d */
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{ .mk = { 0x4e, 0 }, .brk = { 0xce, 0 } }, /* 04e */
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{ .mk = { 0x4f, 0 }, .brk = { 0xcf, 0 } }, /* 04f */
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{ .mk = { 0x50, 0 }, .brk = { 0xd0, 0 } }, /* 050 */
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{ .mk = { 0x51, 0 }, .brk = { 0xd1, 0 } }, /* 051 */
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{ .mk = { 0x52, 0 }, .brk = { 0xd2, 0 } }, /* 052 */
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{ .mk = { 0x53, 0 }, .brk = { 0xd3, 0 } }, /* 053 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 054 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 055 */
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{ .mk = { 0x55, 0 }, .brk = { 0xd5, 0 } }, /* 056 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 057 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 058 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 059 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 05a */
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{ .mk = { 0 }, .brk = { 0 } }, /* 05b */
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{ .mk = { 0 }, .brk = { 0 } }, /* 05c */
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{ .mk = { 0 }, .brk = { 0 } }, /* 05d */
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{ .mk = { 0 }, .brk = { 0 } }, /* 05e */
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{ .mk = { 0 }, .brk = { 0 } }, /* 05f */
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{ .mk = { 0 }, .brk = { 0 } }, /* 060 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 061 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 062 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 063 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 064 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 065 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 066 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 067 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 068 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 069 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 06a */
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{ .mk = { 0 }, .brk = { 0 } }, /* 06b */
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{ .mk = { 0 }, .brk = { 0 } }, /* 06c */
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{ .mk = { 0 }, .brk = { 0 } }, /* 06d */
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{ .mk = { 0 }, .brk = { 0 } }, /* 06e */
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{ .mk = { 0 }, .brk = { 0 } }, /* 06f */
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{ .mk = { 0 }, .brk = { 0 } }, /* 070 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 071 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 072 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 073 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 074 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 075 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 076 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 077 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 078 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 079 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 07a */
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{ .mk = { 0 }, .brk = { 0 } }, /* 07b */
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{ .mk = { 0 }, .brk = { 0 } }, /* 07c */
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{ .mk = { 0 }, .brk = { 0 } }, /* 07d */
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{ .mk = { 0 }, .brk = { 0 } }, /* 07e */
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{ .mk = { 0 }, .brk = { 0 } }, /* 07f */
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{ .mk = { 0 }, .brk = { 0 } }, /* 080 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 081 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 082 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 083 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 084 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 085 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 086 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 087 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 088 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 089 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 08a */
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{ .mk = { 0 }, .brk = { 0 } }, /* 08b */
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{ .mk = { 0 }, .brk = { 0 } }, /* 08c */
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{ .mk = { 0 }, .brk = { 0 } }, /* 08d */
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{ .mk = { 0 }, .brk = { 0 } }, /* 08e */
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{ .mk = { 0 }, .brk = { 0 } }, /* 08f */
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{ .mk = { 0 }, .brk = { 0 } }, /* 090 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 091 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 092 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 093 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 094 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 095 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 096 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 097 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 098 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 099 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 09a */
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{ .mk = { 0 }, .brk = { 0 } }, /* 09b */
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{ .mk = { 0 }, .brk = { 0 } }, /* 09c */
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{ .mk = { 0 }, .brk = { 0 } }, /* 09d */
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{ .mk = { 0 }, .brk = { 0 } }, /* 09e */
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{ .mk = { 0 }, .brk = { 0 } }, /* 09f */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a0 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a1 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a2 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a3 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a4 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a5 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a6 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a7 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a8 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0a9 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0aa */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0ab */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0ac */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0ad */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0ae */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0af */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b0 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b1 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b2 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b3 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b4 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b5 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b6 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b7 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b8 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0b9 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0ba */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0bb */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0bc */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0bd */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0be */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0bf */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c0 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c1 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c2 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c3 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c4 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c5 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c6 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c7 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c8 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0c9 */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0ca */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0cb */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0cc */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0cd */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0ce */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0cf */
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{ .mk = { 0 }, .brk = { 0 } }, /* 0d0 */
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|
{ .mk = { 0 }, .brk = { 0 } }, /* 0d1 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0d2 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0d3 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0d4 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0d5 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0d6 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0d7 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0d8 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0d9 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0da */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0db */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0dc */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0dd */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0de */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0df */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e0 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e1 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e2 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e3 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e4 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e5 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e6 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e7 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e8 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0e9 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0ea */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0eb */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0ec */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0ed */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0ee */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0ef */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f0 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f1 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f2 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f3 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f4 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f5 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f6 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f7 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f8 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0f9 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0fa */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0fb */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0fc */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0fd */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0fe */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 0ff */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 100 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 101 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 102 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 103 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 104 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 105 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 106 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 107 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 108 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 109 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 10a */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 10b */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 10c */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 10d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 10e */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 10f */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 110 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 111 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 112 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 113 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 114 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 115 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 116 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 117 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 118 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 119 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 11a */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 11b */
|
|
{ .mk = { 0x1c, 0 }, .brk = { 0x9c, 0 } }, /* 11c */
|
|
{ .mk = { 0x1d, 0 }, .brk = { 0x9d, 0 } }, /* 11d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 11e */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 11f */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 120 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 121 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 122 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 123 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 124 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 125 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 126 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 127 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 128 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 129 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 12a */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 12b */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 12c */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 12d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 12e */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 12f */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 130 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 131 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 132 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 133 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 134 */
|
|
{ .mk = { 0x35, 0 }, .brk = { 0xb5, 0 } }, /* 135 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 136 */
|
|
{ .mk = { 0x37, 0 }, .brk = { 0xb7, 0 } }, /* 137 */
|
|
{ .mk = { 0x54, 0 }, .brk = { 0xd4, 0 } }, /* 138 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 139 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 13a */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 13b */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 13c */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 13d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 13e */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 13f */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 140 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 141 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 142 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 143 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 144 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 145 */
|
|
{ .mk = { 0x46, 0 }, .brk = { 0xc6, 0 } }, /* 146 */
|
|
{ .mk = { 0x47, 0 }, .brk = { 0xc7, 0 } }, /* 147 */
|
|
{ .mk = { 0x48, 0 }, .brk = { 0xc8, 0 } }, /* 148 */
|
|
{ .mk = { 0x49, 0 }, .brk = { 0xc9, 0 } }, /* 149 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 14a */
|
|
{ .mk = { 0x4b, 0 }, .brk = { 0xcb, 0 } }, /* 14b */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 14c */
|
|
{ .mk = { 0x4d, 0 }, .brk = { 0xcd, 0 } }, /* 14d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 14e */
|
|
{ .mk = { 0x4f, 0 }, .brk = { 0xcf, 0 } }, /* 14f */
|
|
{ .mk = { 0x50, 0 }, .brk = { 0xd0, 0 } }, /* 150 */
|
|
{ .mk = { 0x51, 0 }, .brk = { 0xd1, 0 } }, /* 151 */
|
|
{ .mk = { 0x52, 0 }, .brk = { 0xd2, 0 } }, /* 152 */
|
|
{ .mk = { 0x53, 0 }, .brk = { 0xd3, 0 } }, /* 153 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 154 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 155 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 156 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 157 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 158 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 159 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 15a */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 15b */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 15c */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 15d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 15e */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 15f */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 160 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 161 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 162 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 163 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 164 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 165 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 166 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 167 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 168 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 169 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 16a */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 16b */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 16c */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 16d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 16e */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 16f */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 170 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 171 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 172 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 173 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 174 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 175 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 176 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 177 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 178 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 179 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 17a */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 17b */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 17c */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 17d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 17e */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 17f */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 180 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 181 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 182 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 183 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 184 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 185 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 186 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 187 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 188 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 189 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 18a */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 18b */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 18c */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 18d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 18e */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 18f */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 190 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 191 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 192 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 193 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 194 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 195 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 196 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 197 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 198 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 199 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 19a */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 19b */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 19c */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 19d */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 19e */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 19f */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a0 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a1 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a2 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a3 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a4 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a5 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a6 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a7 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a8 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1a9 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1aa */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ab */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ac */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ad */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ae */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1af */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b0 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b1 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b2 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b3 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b4 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b5 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b6 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b7 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b8 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1b9 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ba */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1bb */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1bc */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1bd */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1be */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1bf */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c0 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c1 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c2 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c3 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c4 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c5 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c6 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c7 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c8 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1c9 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ca */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1cb */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1cc */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1cd */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ce */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1cf */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d0 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d1 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d2 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d3 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d4 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d5 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d6 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d7 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d8 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1d9 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1da */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1db */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1dc */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1dd */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1de */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1df */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e0 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e1 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e2 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e3 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e4 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e5 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e6 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e7 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e8 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1e9 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ea */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1eb */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ec */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ed */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ee */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1ef */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f0 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f1 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f2 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f3 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f4 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f5 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f6 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f7 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f8 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1f9 */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1fa */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1fb */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1fc */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1fd */
|
|
{ .mk = { 0 }, .brk = { 0 } }, /* 1fe */
|
|
{ .mk = { 0 }, .brk = { 0 } } /* 1ff */
|
|
// clang-format on
|
|
};
|
|
|
|
static video_timings_t timing_dram = { VIDEO_BUS, 0, 0, 0, 0, 0, 0 }; /*No additional waitstates*/
|
|
|
|
static uint8_t crtcmask[32] = {
|
|
0xff, 0xff, 0xff, 0xff, 0x7f, 0x1f, 0x7f, 0x7f,
|
|
0xf3, 0x1f, 0x7f, 0x1f, 0x3f, 0xff, 0x3f, 0xff,
|
|
0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
|
|
};
|
|
static uint8_t key_queue[16];
|
|
static int key_queue_start = 0;
|
|
static int key_queue_end = 0;
|
|
|
|
static void
|
|
recalc_address(pcjr_t *pcjr)
|
|
{
|
|
uint8_t masked_memctrl = pcjr->memctrl;
|
|
|
|
/* According to the Technical Reference, bits 2 and 5 are
|
|
ignored if there is only 64k of RAM and there are only
|
|
4 pages. */
|
|
if (mem_size < 128)
|
|
masked_memctrl &= ~0x24;
|
|
|
|
if ((pcjr->memctrl & 0xc0) == 0xc0) {
|
|
pcjr->vram = &ram[(masked_memctrl & 0x06) << 14];
|
|
pcjr->b8000 = &ram[(masked_memctrl & 0x30) << 11];
|
|
} else {
|
|
pcjr->vram = &ram[(masked_memctrl & 0x07) << 14];
|
|
pcjr->b8000 = &ram[(masked_memctrl & 0x38) << 11];
|
|
}
|
|
}
|
|
|
|
static void
|
|
recalc_timings(pcjr_t *pcjr)
|
|
{
|
|
double _dispontime;
|
|
double _dispofftime;
|
|
double disptime;
|
|
|
|
if (pcjr->array[0] & 1) {
|
|
disptime = pcjr->crtc[0] + 1;
|
|
_dispontime = pcjr->crtc[1];
|
|
} else {
|
|
disptime = (pcjr->crtc[0] + 1) << 1;
|
|
_dispontime = pcjr->crtc[1] << 1;
|
|
}
|
|
|
|
_dispofftime = disptime - _dispontime;
|
|
_dispontime *= CGACONST;
|
|
_dispofftime *= CGACONST;
|
|
pcjr->dispontime = (uint64_t) (_dispontime);
|
|
pcjr->dispofftime = (uint64_t) (_dispofftime);
|
|
}
|
|
|
|
static int
|
|
vid_get_h_overscan_size(pcjr_t *pcjr)
|
|
{
|
|
int ret;
|
|
|
|
if (pcjr->array[0] & 1)
|
|
ret = 128;
|
|
else
|
|
ret = 256;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
vid_out(uint16_t addr, uint8_t val, void *priv)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *) priv;
|
|
uint8_t old;
|
|
|
|
switch (addr) {
|
|
case 0x3d0:
|
|
case 0x3d2:
|
|
case 0x3d4:
|
|
case 0x3d6:
|
|
pcjr->crtcreg = val & 0x1f;
|
|
return;
|
|
|
|
case 0x3d1:
|
|
case 0x3d3:
|
|
case 0x3d5:
|
|
case 0x3d7:
|
|
old = pcjr->crtc[pcjr->crtcreg];
|
|
pcjr->crtc[pcjr->crtcreg] = val & crtcmask[pcjr->crtcreg];
|
|
if (pcjr->crtcreg == 2)
|
|
overscan_x = vid_get_h_overscan_size(pcjr);
|
|
if (old != val) {
|
|
if (pcjr->crtcreg < 0xe || pcjr->crtcreg > 0x10) {
|
|
pcjr->fullchange = changeframecount;
|
|
recalc_timings(pcjr);
|
|
}
|
|
}
|
|
return;
|
|
|
|
case 0x3da:
|
|
if (!pcjr->array_ff)
|
|
pcjr->array_index = val & 0x1f;
|
|
else {
|
|
if (pcjr->array_index & 0x10)
|
|
val &= 0x0f;
|
|
pcjr->array[pcjr->array_index & 0x1f] = val;
|
|
if (!(pcjr->array_index & 0x1f))
|
|
update_cga16_color(val);
|
|
}
|
|
pcjr->array_ff = !pcjr->array_ff;
|
|
break;
|
|
|
|
case 0x3df:
|
|
pcjr->memctrl = val;
|
|
pcjr->pa = val; /* The PCjr BIOS expects the value written to 3DF to
|
|
then be readable from port 60, others it errors out
|
|
with only 64k RAM set (but somehow, still works with
|
|
128k or more RAM). */
|
|
pcjr->addr_mode = val >> 6;
|
|
recalc_address(pcjr);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static uint8_t
|
|
vid_in(uint16_t addr, void *priv)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *) priv;
|
|
uint8_t ret = 0xff;
|
|
|
|
switch (addr) {
|
|
case 0x3d0:
|
|
case 0x3d2:
|
|
case 0x3d4:
|
|
case 0x3d6:
|
|
ret = pcjr->crtcreg;
|
|
break;
|
|
|
|
case 0x3d1:
|
|
case 0x3d3:
|
|
case 0x3d5:
|
|
case 0x3d7:
|
|
ret = pcjr->crtc[pcjr->crtcreg];
|
|
break;
|
|
|
|
case 0x3da:
|
|
pcjr->array_ff = 0;
|
|
pcjr->stat ^= 0x10;
|
|
ret = pcjr->stat;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
vid_write(uint32_t addr, uint8_t val, void *priv)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *) priv;
|
|
|
|
if (pcjr->memctrl == -1)
|
|
return;
|
|
|
|
pcjr->b8000[addr & 0x3fff] = val;
|
|
}
|
|
|
|
static uint8_t
|
|
vid_read(uint32_t addr, void *priv)
|
|
{
|
|
const pcjr_t *pcjr = (pcjr_t *) priv;
|
|
|
|
if (pcjr->memctrl == -1)
|
|
return 0xff;
|
|
|
|
return (pcjr->b8000[addr & 0x3fff]);
|
|
}
|
|
|
|
static int
|
|
vid_get_h_overscan_delta(pcjr_t *pcjr)
|
|
{
|
|
int def;
|
|
int coef;
|
|
int ret;
|
|
|
|
switch ((pcjr->array[0] & 0x13) | ((pcjr->array[3] & 0x08) << 5)) {
|
|
case 0x13: /*320x200x16*/
|
|
def = 0x56;
|
|
coef = 8;
|
|
break;
|
|
case 0x12: /*160x200x16*/
|
|
def = 0x2c; /* I'm going to assume a datasheet erratum here. */
|
|
coef = 16;
|
|
break;
|
|
case 0x03: /*640x200x4*/
|
|
def = 0x56;
|
|
coef = 8;
|
|
break;
|
|
case 0x01: /*80 column text*/
|
|
def = 0x5a;
|
|
coef = 8;
|
|
break;
|
|
case 0x00: /*40 column text*/
|
|
default:
|
|
def = 0x2c;
|
|
coef = 16;
|
|
break;
|
|
case 0x02: /*320x200x4*/
|
|
def = 0x2b;
|
|
coef = 16;
|
|
break;
|
|
case 0x102: /*640x200x2*/
|
|
def = 0x2b;
|
|
coef = 16;
|
|
break;
|
|
}
|
|
|
|
ret = pcjr->crtc[0x02] - def;
|
|
|
|
if (ret < -8)
|
|
ret = -8;
|
|
|
|
if (ret > 8)
|
|
ret = 8;
|
|
|
|
return ret * coef;
|
|
}
|
|
|
|
static void
|
|
vid_blit_h_overscan(pcjr_t *pcjr)
|
|
{
|
|
int cols = (pcjr->array[2] & 0xf) + 16;;
|
|
int y0 = pcjr->firstline << 1;
|
|
int y = (pcjr->lastline << 1) + 16;
|
|
int ho_s = vid_get_h_overscan_size(pcjr);
|
|
int i;
|
|
int x;
|
|
|
|
if (pcjr->array[0] & 1)
|
|
x = (pcjr->crtc[1] << 3) + ho_s;
|
|
else
|
|
x = (pcjr->crtc[1] << 4) + ho_s;
|
|
|
|
for (i = 0; i < 16; i++) {
|
|
hline(buffer32, 0, y0 + i, x, cols);
|
|
hline(buffer32, 0, y + i, x, cols);
|
|
|
|
if (pcjr->composite) {
|
|
Composite_Process(pcjr->array[0], 0, x >> 2, buffer32->line[y0 + i]);
|
|
Composite_Process(pcjr->array[0], 0, x >> 2, buffer32->line[y + i]);
|
|
} else {
|
|
video_process_8(x, y0 + i);
|
|
video_process_8(x, y + i);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
vid_poll(void *priv)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *) priv;
|
|
uint16_t ca = (pcjr->crtc[15] | (pcjr->crtc[14] << 8)) & 0x3fff;
|
|
int drawcursor;
|
|
int x;
|
|
int xs_temp;
|
|
int ys_temp;
|
|
int oldvc;
|
|
uint8_t chr;
|
|
uint8_t attr;
|
|
uint16_t dat;
|
|
int cols[4];
|
|
int oldsc;
|
|
int l = (pcjr->displine << 1) + 16;
|
|
int ho_s = vid_get_h_overscan_size(pcjr);
|
|
int ho_d = vid_get_h_overscan_delta(pcjr) + (ho_s / 2);
|
|
|
|
if (!pcjr->linepos) {
|
|
timer_advance_u64(&pcjr->timer, pcjr->dispofftime);
|
|
pcjr->stat &= ~1;
|
|
pcjr->linepos = 1;
|
|
oldsc = pcjr->sc;
|
|
if ((pcjr->crtc[8] & 3) == 3)
|
|
pcjr->sc = (pcjr->sc << 1) & 7;
|
|
if (pcjr->dispon) {
|
|
uint16_t offset = 0;
|
|
uint16_t mask = 0x1fff;
|
|
|
|
if (pcjr->displine < pcjr->firstline) {
|
|
pcjr->firstline = pcjr->displine;
|
|
video_wait_for_buffer();
|
|
}
|
|
pcjr->lastline = pcjr->displine;
|
|
cols[0] = (pcjr->array[2] & 0xf) + 16;
|
|
|
|
if (pcjr->array[0] & 1) {
|
|
hline(buffer32, 0, l, (pcjr->crtc[1] << 3) + ho_s, cols[0]);
|
|
hline(buffer32, 0, l + 1, (pcjr->crtc[1] << 3) + ho_s, cols[0]);
|
|
} else {
|
|
hline(buffer32, 0, l, (pcjr->crtc[1] << 4) + ho_s, cols[0]);
|
|
hline(buffer32, 0, l + 1, (pcjr->crtc[1] << 4) + ho_s, cols[0]);
|
|
}
|
|
|
|
switch (pcjr->addr_mode) {
|
|
case 0: /*Alpha*/
|
|
offset = 0;
|
|
mask = 0x3fff;
|
|
break;
|
|
case 1: /*Low resolution graphics*/
|
|
offset = (pcjr->sc & 1) * 0x2000;
|
|
break;
|
|
case 3: /*High resolution graphics*/
|
|
offset = (pcjr->sc & 3) * 0x2000;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
switch ((pcjr->array[0] & 0x13) | ((pcjr->array[3] & 0x08) << 5)) {
|
|
case 0x13: /*320x200x16*/
|
|
for (x = 0; x < pcjr->crtc[1]; x++) {
|
|
int ef_x = (x << 3) + ho_d;
|
|
dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset] << 8) |
|
|
pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
|
|
pcjr->ma++;
|
|
buffer32->line[l][ef_x] = buffer32->line[l][ef_x + 1] =
|
|
buffer32->line[l + 1][ef_x] = buffer32->line[l + 1][ef_x + 1] =
|
|
pcjr->array[((dat >> 12) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
buffer32->line[l][ef_x + 2] = buffer32->line[l][ef_x + 3] =
|
|
buffer32->line[l + 1][ef_x + 2] = buffer32->line[l + 1][ef_x + 3] =
|
|
pcjr->array[((dat >> 8) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
buffer32->line[l][ef_x + 4] = buffer32->line[l][ef_x + 5] =
|
|
buffer32->line[l + 1][ef_x + 4] = buffer32->line[l + 1][ef_x + 5] =
|
|
pcjr->array[((dat >> 4) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
buffer32->line[l][ef_x + 6] = buffer32->line[l][ef_x + 7] =
|
|
buffer32->line[l + 1][ef_x + 6] = buffer32->line[l + 1][ef_x + 7] =
|
|
pcjr->array[(dat & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
}
|
|
break;
|
|
case 0x12: /*160x200x16*/
|
|
for (x = 0; x < pcjr->crtc[1]; x++) {
|
|
int ef_x = (x << 4) + ho_d;
|
|
dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset] << 8) |
|
|
pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
|
|
pcjr->ma++;
|
|
buffer32->line[l][ef_x] = buffer32->line[l][ef_x + 1] =
|
|
buffer32->line[l][ef_x + 2] = buffer32->line[l][ef_x + 3] =
|
|
buffer32->line[l + 1][ef_x] = buffer32->line[l + 1][ef_x + 1] =
|
|
buffer32->line[l + 1][ef_x + 2] = buffer32->line[l + 1][ef_x + 3] =
|
|
pcjr->array[((dat >> 12) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
buffer32->line[l][ef_x + 4] = buffer32->line[l][ef_x + 5] =
|
|
buffer32->line[l][ef_x + 6] = buffer32->line[l][ef_x + 7] =
|
|
buffer32->line[l + 1][ef_x + 4] = buffer32->line[l + 1][ef_x + 5] =
|
|
buffer32->line[l + 1][ef_x + 6] = buffer32->line[l + 1][ef_x + 7] =
|
|
pcjr->array[((dat >> 8) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
buffer32->line[l][ef_x + 8] = buffer32->line[l][ef_x + 9] =
|
|
buffer32->line[l][ef_x + 10] = buffer32->line[l][ef_x + 11] =
|
|
buffer32->line[l + 1][ef_x + 8] = buffer32->line[l + 1][ef_x + 9] =
|
|
buffer32->line[l + 1][ef_x + 10] = buffer32->line[l + 1][ef_x + 11] =
|
|
pcjr->array[((dat >> 4) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
buffer32->line[l][ef_x + 12] = buffer32->line[l][ef_x + 13] =
|
|
buffer32->line[l][ef_x + 14] = buffer32->line[l][ef_x + 15] =
|
|
buffer32->line[l + 1][ef_x + 12] = buffer32->line[l + 1][ef_x + 13] =
|
|
buffer32->line[l + 1][ef_x + 14] = buffer32->line[l + 1][ef_x + 15] =
|
|
pcjr->array[(dat & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
}
|
|
break;
|
|
case 0x03: /*640x200x4*/
|
|
for (x = 0; x < pcjr->crtc[1]; x++) {
|
|
int ef_x = (x << 3) + ho_d;
|
|
dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1] << 8) |
|
|
pcjr->vram[((pcjr->ma << 1) & mask) + offset];
|
|
pcjr->ma++;
|
|
for (uint8_t c = 0; c < 8; c++) {
|
|
chr = (dat >> 7) & 1;
|
|
chr |= ((dat >> 14) & 2);
|
|
buffer32->line[l][ef_x + c] = buffer32->line[l + 1][ef_x + c] =
|
|
pcjr->array[(chr & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
dat <<= 1;
|
|
}
|
|
}
|
|
break;
|
|
case 0x01: /*80 column text*/
|
|
for (x = 0; x < pcjr->crtc[1]; x++) {
|
|
int ef_x = (x << 3) + ho_d;
|
|
chr = pcjr->vram[((pcjr->ma << 1) & mask) + offset];
|
|
attr = pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
|
|
drawcursor = ((pcjr->ma == ca) && pcjr->con && pcjr->cursoron);
|
|
if (pcjr->array[3] & 4) {
|
|
cols[1] = pcjr->array[((attr & 15) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
cols[0] = pcjr->array[(((attr >> 4) & 7) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
if ((pcjr->blink & 16) && (attr & 0x80) && !drawcursor)
|
|
cols[1] = cols[0];
|
|
} else {
|
|
cols[1] = pcjr->array[((attr & 15) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
cols[0] = pcjr->array[((attr >> 4) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
}
|
|
if (pcjr->sc & 8)
|
|
for (uint8_t c = 0; c < 8; c++)
|
|
buffer32->line[l][ef_x + c] =
|
|
buffer32->line[l + 1][ef_x + c] = cols[0];
|
|
else
|
|
for (uint8_t c = 0; c < 8; c++)
|
|
buffer32->line[l][ef_x + c] =
|
|
buffer32->line[l + 1][ef_x + c] =
|
|
cols[(fontdat[chr][pcjr->sc & 7] & (1 << (c ^ 7))) ? 1 : 0];
|
|
if (drawcursor)
|
|
for (uint8_t c = 0; c < 8; c++) {
|
|
buffer32->line[l][ef_x + c] ^= 15;
|
|
buffer32->line[l + 1][ef_x + c] ^= 15;
|
|
}
|
|
pcjr->ma++;
|
|
}
|
|
break;
|
|
case 0x00: /*40 column text*/
|
|
for (x = 0; x < pcjr->crtc[1]; x++) {
|
|
int ef_x = (x << 4) + ho_d;
|
|
chr = pcjr->vram[((pcjr->ma << 1) & mask) + offset];
|
|
attr = pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
|
|
drawcursor = ((pcjr->ma == ca) && pcjr->con && pcjr->cursoron);
|
|
if (pcjr->array[3] & 4) {
|
|
cols[1] = pcjr->array[((attr & 15) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
cols[0] = pcjr->array[(((attr >> 4) & 7) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
if ((pcjr->blink & 16) && (attr & 0x80) && !drawcursor)
|
|
cols[1] = cols[0];
|
|
} else {
|
|
cols[1] = pcjr->array[((attr & 15) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
cols[0] = pcjr->array[((attr >> 4) & pcjr->array[1] & 0x0f) + 16] + 16;
|
|
}
|
|
pcjr->ma++;
|
|
if (pcjr->sc & 8)
|
|
for (uint8_t c = 0; c < 8; c++)
|
|
buffer32->line[l][ef_x + (c << 1)] =
|
|
buffer32->line[l][ef_x + (c << 1) + 1] =
|
|
buffer32->line[l + 1][ef_x + (c << 1)] =
|
|
buffer32->line[l + 1][ef_x + (c << 1) + 1] = cols[0];
|
|
else
|
|
for (uint8_t c = 0; c < 8; c++)
|
|
buffer32->line[l][ef_x + (c << 1)] =
|
|
buffer32->line[l][ef_x + (c << 1) + 1] =
|
|
buffer32->line[l + 1][ef_x + (c << 1)] =
|
|
buffer32->line[l + 1][ef_x + (c << 1) + 1] =
|
|
cols[(fontdat[chr][pcjr->sc & 7] & (1 << (c ^ 7))) ? 1 : 0];
|
|
if (drawcursor)
|
|
for (uint8_t c = 0; c < 16; c++) {
|
|
buffer32->line[l][ef_x + c] ^= 15;
|
|
buffer32->line[l + 1][ef_x + c] ^= 15;
|
|
}
|
|
}
|
|
break;
|
|
case 0x02: /*320x200x4*/
|
|
cols[0] = pcjr->array[0 + 16] + 16;
|
|
cols[1] = pcjr->array[1 + 16] + 16;
|
|
cols[2] = pcjr->array[2 + 16] + 16;
|
|
cols[3] = pcjr->array[3 + 16] + 16;
|
|
for (x = 0; x < pcjr->crtc[1]; x++) {
|
|
int ef_x = (x << 4) + ho_d;
|
|
dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset] << 8) |
|
|
pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
|
|
pcjr->ma++;
|
|
for (uint8_t c = 0; c < 8; c++) {
|
|
buffer32->line[l][ef_x + (c << 1)] =
|
|
buffer32->line[l][ef_x + (c << 1) + 1] =
|
|
buffer32->line[l + 1][ef_x + (c << 1)] =
|
|
buffer32->line[l + 1][ef_x + (c << 1) + 1] = cols[dat >> 14];
|
|
dat <<= 2;
|
|
}
|
|
}
|
|
break;
|
|
case 0x102: /*640x200x2*/
|
|
cols[0] = pcjr->array[0 + 16] + 16;
|
|
cols[1] = pcjr->array[1 + 16] + 16;
|
|
for (x = 0; x < pcjr->crtc[1]; x++) {
|
|
int ef_x = (x << 4) + ho_d;
|
|
dat = (pcjr->vram[((pcjr->ma << 1) & mask) + offset] << 8) |
|
|
pcjr->vram[((pcjr->ma << 1) & mask) + offset + 1];
|
|
pcjr->ma++;
|
|
for (uint8_t c = 0; c < 16; c++) {
|
|
buffer32->line[l][ef_x + c] = buffer32->line[l + 1][ef_x + c] =
|
|
cols[dat >> 15];
|
|
dat <<= 1;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
} else {
|
|
if (pcjr->array[3] & 4) {
|
|
if (pcjr->array[0] & 1) {
|
|
hline(buffer32, 0, l, (pcjr->crtc[1] << 3) + ho_s, (pcjr->array[2] & 0xf) + 16);
|
|
hline(buffer32, 0, l + 1, (pcjr->crtc[1] << 3) + ho_s, (pcjr->array[2] & 0xf) + 16);
|
|
} else {
|
|
hline(buffer32, 0, l, (pcjr->crtc[1] << 4) + ho_s, (pcjr->array[2] & 0xf) + 16);
|
|
hline(buffer32, 0, l + 1, (pcjr->crtc[1] << 4) + ho_s, (pcjr->array[2] & 0xf) + 16);
|
|
}
|
|
} else {
|
|
cols[0] = pcjr->array[0 + 16] + 16;
|
|
if (pcjr->array[0] & 1) {
|
|
hline(buffer32, 0, l, (pcjr->crtc[1] << 3) + ho_s, cols[0]);
|
|
hline(buffer32, 0, l + 1, (pcjr->crtc[1] << 3) + ho_s, cols[0]);
|
|
} else {
|
|
hline(buffer32, 0, l, (pcjr->crtc[1] << 4) + ho_s, cols[0]);
|
|
hline(buffer32, 0, l + 1, (pcjr->crtc[1] << 4) + ho_s, cols[0]);
|
|
}
|
|
}
|
|
}
|
|
if (pcjr->array[0] & 1)
|
|
x = (pcjr->crtc[1] << 3) + ho_s;
|
|
else
|
|
x = (pcjr->crtc[1] << 4) + ho_s;
|
|
if (pcjr->composite) {
|
|
Composite_Process(pcjr->array[0], 0, x >> 2, buffer32->line[l]);
|
|
Composite_Process(pcjr->array[0], 0, x >> 2, buffer32->line[l + 1]);
|
|
} else {
|
|
video_process_8(x, l);
|
|
video_process_8(x, l + 1);
|
|
}
|
|
pcjr->sc = oldsc;
|
|
if (pcjr->vc == pcjr->crtc[7] && !pcjr->sc) {
|
|
pcjr->stat |= 8;
|
|
}
|
|
pcjr->displine++;
|
|
if (pcjr->displine >= 360)
|
|
pcjr->displine = 0;
|
|
} else {
|
|
timer_advance_u64(&pcjr->timer, pcjr->dispontime);
|
|
if (pcjr->dispon)
|
|
pcjr->stat |= 1;
|
|
pcjr->linepos = 0;
|
|
if (pcjr->vsynctime) {
|
|
pcjr->vsynctime--;
|
|
if (!pcjr->vsynctime) {
|
|
pcjr->stat &= ~8;
|
|
}
|
|
}
|
|
if (pcjr->sc == (pcjr->crtc[11] & 31) || ((pcjr->crtc[8] & 3) == 3 && pcjr->sc == ((pcjr->crtc[11] & 31) >> 1))) {
|
|
pcjr->con = 0;
|
|
pcjr->coff = 1;
|
|
}
|
|
if (pcjr->vadj) {
|
|
pcjr->sc++;
|
|
pcjr->sc &= 31;
|
|
pcjr->ma = pcjr->maback;
|
|
pcjr->vadj--;
|
|
if (!pcjr->vadj) {
|
|
pcjr->dispon = 1;
|
|
pcjr->ma = pcjr->maback = (pcjr->crtc[13] | (pcjr->crtc[12] << 8)) & 0x3fff;
|
|
pcjr->sc = 0;
|
|
}
|
|
} else if (pcjr->sc == pcjr->crtc[9] || ((pcjr->crtc[8] & 3) == 3 && pcjr->sc == (pcjr->crtc[9] >> 1))) {
|
|
pcjr->maback = pcjr->ma;
|
|
pcjr->sc = 0;
|
|
oldvc = pcjr->vc;
|
|
pcjr->vc++;
|
|
pcjr->vc &= 127;
|
|
if (pcjr->vc == pcjr->crtc[6])
|
|
pcjr->dispon = 0;
|
|
if (oldvc == pcjr->crtc[4]) {
|
|
pcjr->vc = 0;
|
|
pcjr->vadj = pcjr->crtc[5];
|
|
if (!pcjr->vadj)
|
|
pcjr->dispon = 1;
|
|
if (!pcjr->vadj)
|
|
pcjr->ma = pcjr->maback = (pcjr->crtc[13] | (pcjr->crtc[12] << 8)) & 0x3fff;
|
|
if ((pcjr->crtc[10] & 0x60) == 0x20)
|
|
pcjr->cursoron = 0;
|
|
else
|
|
pcjr->cursoron = pcjr->blink & 16;
|
|
}
|
|
if (pcjr->vc == pcjr->crtc[7]) {
|
|
pcjr->dispon = 0;
|
|
pcjr->displine = 0;
|
|
pcjr->vsynctime = 16;
|
|
picint(1 << 5);
|
|
if (pcjr->crtc[7]) {
|
|
if (pcjr->array[0] & 1)
|
|
x = (pcjr->crtc[1] << 3) + ho_s;
|
|
else
|
|
x = (pcjr->crtc[1] << 4) + ho_s;
|
|
pcjr->lastline++;
|
|
|
|
xs_temp = x;
|
|
ys_temp = (pcjr->lastline - pcjr->firstline) << 1;
|
|
|
|
if ((xs_temp > 0) && (ys_temp > 0)) {
|
|
int actual_ys = ys_temp;
|
|
|
|
if (xs_temp < 64)
|
|
xs_temp = 656;
|
|
if (ys_temp < 32)
|
|
ys_temp = 400;
|
|
if (!enable_overscan)
|
|
xs_temp -= ho_s;
|
|
|
|
if ((xs_temp != xsize) || (ys_temp != ysize) || video_force_resize_get()) {
|
|
xsize = xs_temp;
|
|
ysize = ys_temp;
|
|
|
|
set_screen_size(xsize, ysize + (enable_overscan ? 32 : 0));
|
|
|
|
if (video_force_resize_get())
|
|
video_force_resize_set(0);
|
|
}
|
|
|
|
vid_blit_h_overscan(pcjr);
|
|
|
|
if (enable_overscan) {
|
|
video_blit_memtoscreen(0, pcjr->firstline << 1,
|
|
xsize, actual_ys + 32);
|
|
} else if (pcjr->apply_hd) {
|
|
video_blit_memtoscreen(ho_s / 2, (pcjr->firstline << 1) + 16,
|
|
xsize, actual_ys);
|
|
} else {
|
|
video_blit_memtoscreen(ho_d, (pcjr->firstline << 1) + 16,
|
|
xsize, actual_ys);
|
|
}
|
|
}
|
|
|
|
frames++;
|
|
video_res_x = xsize;
|
|
video_res_y = ysize;
|
|
}
|
|
pcjr->firstline = 1000;
|
|
pcjr->lastline = 0;
|
|
pcjr->blink++;
|
|
}
|
|
} else {
|
|
pcjr->sc++;
|
|
pcjr->sc &= 31;
|
|
pcjr->ma = pcjr->maback;
|
|
}
|
|
if (pcjr->sc == (pcjr->crtc[10] & 31) || ((pcjr->crtc[8] & 3) == 3 && pcjr->sc == ((pcjr->crtc[10] & 31) >> 1)))
|
|
pcjr->con = 1;
|
|
}
|
|
}
|
|
|
|
static void
|
|
kbd_write(uint16_t port, uint8_t val, void *priv)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *) priv;
|
|
|
|
if ((port >= 0xa0) && (port <= 0xa7))
|
|
port = 0xa0;
|
|
|
|
switch (port) {
|
|
case 0x60:
|
|
pcjr->pa = val;
|
|
break;
|
|
|
|
case 0x61:
|
|
pcjr->pb = val;
|
|
|
|
if (cassette != NULL)
|
|
pc_cas_set_motor(cassette, (pcjr->pb & 0x08) == 0);
|
|
|
|
speaker_update();
|
|
speaker_gated = val & 1;
|
|
speaker_enable = val & 2;
|
|
if (speaker_enable)
|
|
was_speaker_enable = 1;
|
|
pit_devs[0].set_gate(pit_devs[0].data, 2, val & 1);
|
|
sn76489_mute = speaker_mute = 1;
|
|
switch (val & 0x60) {
|
|
case 0x00:
|
|
speaker_mute = 0;
|
|
break;
|
|
|
|
case 0x60:
|
|
sn76489_mute = 0;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case 0xa0:
|
|
nmi_mask = val & 0x80;
|
|
pit_devs[0].set_using_timer(pit_devs[0].data, 1, !(val & 0x20));
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static uint8_t
|
|
kbd_read(uint16_t port, void *priv)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *) priv;
|
|
uint8_t ret = 0xff;
|
|
|
|
if ((port >= 0xa0) && (port <= 0xa7))
|
|
port = 0xa0;
|
|
|
|
switch (port) {
|
|
case 0x60:
|
|
ret = pcjr->pa;
|
|
break;
|
|
|
|
case 0x61:
|
|
ret = pcjr->pb;
|
|
break;
|
|
|
|
case 0x62:
|
|
ret = (pcjr->latched ? 1 : 0);
|
|
ret |= 0x02; /* Modem card not installed */
|
|
if (mem_size < 128)
|
|
ret |= 0x08; /* 64k expansion card not installed */
|
|
if ((pcjr->pb & 0x08) || (cassette == NULL))
|
|
ret |= (ppispeakon ? 0x10 : 0);
|
|
else
|
|
ret |= (pc_cas_get_inp(cassette) ? 0x10 : 0);
|
|
ret |= (ppispeakon ? 0x10 : 0);
|
|
ret |= (ppispeakon ? 0x20 : 0);
|
|
ret |= (pcjr->data ? 0x40 : 0);
|
|
if (pcjr->data)
|
|
ret |= 0x40;
|
|
break;
|
|
|
|
case 0xa0:
|
|
pcjr->latched = 0;
|
|
ret = 0;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void
|
|
kbd_poll(void *priv)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *) priv;
|
|
int c;
|
|
int p = 0;
|
|
int key;
|
|
|
|
timer_advance_u64(&pcjr->send_delay_timer, 220 * TIMER_USEC);
|
|
|
|
if (key_queue_start != key_queue_end && !pcjr->serial_pos && !pcjr->latched) {
|
|
key = key_queue[key_queue_start];
|
|
|
|
key_queue_start = (key_queue_start + 1) & 0xf;
|
|
|
|
pcjr->latched = 1;
|
|
pcjr->serial_data[0] = 1; /*Start bit*/
|
|
pcjr->serial_data[1] = 0;
|
|
|
|
for (c = 0; c < 8; c++) {
|
|
if (key & (1 << c)) {
|
|
pcjr->serial_data[(c + 1) * 2] = 1;
|
|
pcjr->serial_data[(c + 1) * 2 + 1] = 0;
|
|
p++;
|
|
} else {
|
|
pcjr->serial_data[(c + 1) * 2] = 0;
|
|
pcjr->serial_data[(c + 1) * 2 + 1] = 1;
|
|
}
|
|
}
|
|
|
|
if (p & 1) { /*Parity*/
|
|
pcjr->serial_data[9 * 2] = 1;
|
|
pcjr->serial_data[9 * 2 + 1] = 0;
|
|
} else {
|
|
pcjr->serial_data[9 * 2] = 0;
|
|
pcjr->serial_data[9 * 2 + 1] = 1;
|
|
}
|
|
|
|
for (c = 0; c < 11; c++) { /*11 stop bits*/
|
|
pcjr->serial_data[(c + 10) * 2] = 0;
|
|
pcjr->serial_data[(c + 10) * 2 + 1] = 0;
|
|
}
|
|
|
|
pcjr->serial_pos++;
|
|
}
|
|
|
|
if (pcjr->serial_pos) {
|
|
pcjr->data = pcjr->serial_data[pcjr->serial_pos - 1];
|
|
nmi = pcjr->data;
|
|
pcjr->serial_pos++;
|
|
if (pcjr->serial_pos == 42 + 1)
|
|
pcjr->serial_pos = 0;
|
|
}
|
|
}
|
|
|
|
static void
|
|
kbd_adddata(uint16_t val)
|
|
{
|
|
key_queue[key_queue_end] = val;
|
|
key_queue_end = (key_queue_end + 1) & 0xf;
|
|
}
|
|
|
|
static void
|
|
kbd_adddata_ex(uint16_t val)
|
|
{
|
|
kbd_adddata_process(val, kbd_adddata);
|
|
}
|
|
|
|
static void
|
|
speed_changed(void *priv)
|
|
{
|
|
pcjr_t *pcjr = (pcjr_t *) priv;
|
|
|
|
recalc_timings(pcjr);
|
|
}
|
|
|
|
static void
|
|
pcjr_vid_init(pcjr_t *pcjr)
|
|
{
|
|
int display_type;
|
|
|
|
video_inform(VIDEO_FLAG_TYPE_CGA, &timing_dram);
|
|
|
|
pcjr->memctrl = -1;
|
|
if (mem_size < 128)
|
|
pcjr->memctrl &= ~0x24;
|
|
|
|
display_type = device_get_config_int("display_type");
|
|
pcjr->composite = (display_type != PCJR_RGB);
|
|
pcjr->apply_hd = device_get_config_int("apply_hd");
|
|
overscan_x = 256;
|
|
overscan_y = 32;
|
|
|
|
mem_mapping_add(&pcjr->mapping, 0xb8000, 0x08000,
|
|
vid_read, NULL, NULL,
|
|
vid_write, NULL, NULL, NULL, 0, pcjr);
|
|
io_sethandler(0x03d0, 16,
|
|
vid_in, NULL, NULL, vid_out, NULL, NULL, pcjr);
|
|
timer_add(&pcjr->timer, vid_poll, pcjr, 1);
|
|
|
|
cga_palette = 0;
|
|
cgapal_rebuild();
|
|
}
|
|
|
|
void
|
|
pit_irq0_timer_pcjr(int new_out, int old_out, UNUSED(void *priv))
|
|
{
|
|
if (new_out && !old_out) {
|
|
picint(1);
|
|
pit_devs[0].ctr_clock(pit_devs[0].data, 1);
|
|
}
|
|
|
|
if (!new_out)
|
|
picintc(1);
|
|
}
|
|
|
|
static const device_config_t pcjr_config[] = {
|
|
// clang-format off
|
|
{
|
|
.name = "display_type",
|
|
.description = "Display type",
|
|
.type = CONFIG_SELECTION,
|
|
.default_string = "",
|
|
.default_int = PCJR_RGB,
|
|
.file_filter = "",
|
|
.spinner = { 0 },
|
|
.selection = {
|
|
{ .description = "RGB", .value = PCJR_RGB },
|
|
{ .description = "Composite", .value = PCJR_COMPOSITE },
|
|
{ .description = "" }
|
|
}
|
|
},
|
|
{
|
|
.name = "apply_hd",
|
|
.description = "Apply overscan deltas",
|
|
.type = CONFIG_BINARY,
|
|
.default_string = "",
|
|
.default_int = 1
|
|
},
|
|
{ .name = "", .description = "", .type = CONFIG_END }
|
|
// clang-format on
|
|
};
|
|
|
|
const device_t pcjr_device = {
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|
.name = "IBM PCjr",
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|
.internal_name = "pcjr",
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|
.flags = 0,
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|
.local = 0,
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|
.init = NULL,
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|
.close = NULL,
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|
.reset = NULL,
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|
.available = NULL,
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|
.speed_changed = speed_changed,
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.force_redraw = NULL,
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|
.config = pcjr_config
|
|
};
|
|
|
|
int
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|
machine_pcjr_init(UNUSED(const machine_t *model))
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|
{
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|
pcjr_t *pcjr;
|
|
|
|
int ret;
|
|
|
|
ret = bios_load_linear("roms/machines/ibmpcjr/bios.rom",
|
|
0x000f0000, 65536, 0);
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|
|
|
if (bios_only || !ret)
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|
return ret;
|
|
|
|
pcjr = calloc(1, sizeof(pcjr_t));
|
|
|
|
pic_init_pcjr();
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|
pit_common_init(0, pit_irq0_timer_pcjr, NULL);
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|
|
|
cpu_set();
|
|
|
|
/* Initialize the video controller. */
|
|
video_reset(gfxcard[0]);
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|
loadfont("roms/video/mda/mda.rom", 0);
|
|
device_context(&pcjr_device);
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|
pcjr_vid_init(pcjr);
|
|
device_context_restore();
|
|
device_add_ex(&pcjr_device, pcjr);
|
|
|
|
/* Initialize the keyboard. */
|
|
keyboard_scan = 1;
|
|
key_queue_start = key_queue_end = 0;
|
|
io_sethandler(0x0060, 4,
|
|
kbd_read, NULL, NULL, kbd_write, NULL, NULL, pcjr);
|
|
io_sethandler(0x00a0, 8,
|
|
kbd_read, NULL, NULL, kbd_write, NULL, NULL, pcjr);
|
|
timer_add(&pcjr->send_delay_timer, kbd_poll, pcjr, 1);
|
|
keyboard_set_table(scancode_pcjr);
|
|
keyboard_send = kbd_adddata_ex;
|
|
|
|
/* Technically it's the SN76496N, but the SN76489 is identical to the SN76496N. */
|
|
device_add(&sn76489_device);
|
|
|
|
nmi_mask = 0x80;
|
|
|
|
device_add(&fdc_pcjr_device);
|
|
|
|
device_add(&ns8250_pcjr_device);
|
|
serial_set_next_inst(SERIAL_MAX); /* So that serial_standalone_init() won't do anything. */
|
|
|
|
/* "All the inputs are 'read' with one 'IN' from address hex 201." - PCjr Technical Reference (Nov. 83), p.2-119
|
|
|
|
Note by Miran Grca: Meanwhile, the same Technical Reference clearly says that
|
|
the gameport is on ports 201-207. */
|
|
standalone_gameport_type = &gameport_201_device;
|
|
|
|
return ret;
|
|
}
|