72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
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/*
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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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* Header files for the PCjr keyboard and video subsystems.
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*
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*
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*
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* Authors: Connor Hyde, <mario64crashed@gmail.com>
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*
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* Copyright 2025 starfrost
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*/
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#pragma once
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#define PCJR_RGB 0
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#define PCJR_COMPOSITE 1
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typedef struct pcjr_s
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{
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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 cursorvisible; // Is the cursor visible on the current scanline?
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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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void pcjr_recalc_timings(pcjr_t *pcjr);
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// Note: This is a temporary solution until the pcjr video is made its own gfx card
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void pcjr_vid_init(pcjr_t *pcjr);
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