0faf6692c9
Changes to device_t struct to accomodate the upcoming PCI IRQ arbitration rewrite; Added device.c/h API to obtain name from the device_t struct; Significant changes to win/win_settings.c to clean up the code a bit and fix bugs; Ported all the CPU and AudioPCI commits from PCem; Added an API call to allow ACPI soft power off to gracefully stop the emulator; Removed the Siemens PCD-2L from the Dev branch because it now works; Removed the Socket 5 HP Vectra from the Dev branch because it now works; Fixed the Compaq Presario and the Micronics Spitfire; Give the IBM PC330 its own list of 486 CPU so it can have DX2's with CPUID 0x470; SMM fixes; Rewrote the SYSENTER, SYSEXIT, SYSCALL, and SYSRET instructions; Changed IDE reset period to match the specification, fixes #929; The keyboard input and output ports are now forced in front of the queue when read, fixes a number of bugs, including the AMI Apollo hanging on soft reset; Added the Intel AN430TX but Dev branched because it does not work; The network code no longer drops packets if the emulated network card has failed to receive them (eg. when the buffer is full); Changes to PCI card adding and renamed some PCI slot types, also added proper AGP bridge slot types; USB UHCI emulation is no longer a stub (still doesn't fully work, but at least Windows XP chk with Debug no longer ASSERT's on it); Fixed NVR on the the SMC FDC37C932QF and APM variants; A number of fixes to Intel 4x0 chipsets, including fixing every register of the 440LX and 440EX; Some ACPI changes.
112 lines
2.5 KiB
C
112 lines
2.5 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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* Implementation of the ACC 2168 chipset
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*
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*
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*
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* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
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*
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* Copyright 2019 Sarah Walker.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include <string.h>
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#include <wchar.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/io.h>
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#include <86box/mem.h>
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#include <86box/port_92.h>
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#include <86box/chipset.h>
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#define enabled_shadow (MEM_READ_INTERNAL | ((dev->regs[0x02] & 0x20) ? MEM_WRITE_DISABLED : MEM_WRITE_INTERNAL))
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#define disabled_shadow (MEM_READ_EXTANY | MEM_WRITE_EXTANY)
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typedef struct acc2168_t
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{
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int reg_idx;
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uint8_t regs[256];
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} acc2168_t;
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static void
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acc2168_shadow_recalc(acc2168_t *dev)
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{
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mem_set_mem_state_both(0xc0000, 0x8000, ((dev->regs[0x02] & 0x01) ? enabled_shadow : disabled_shadow));
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mem_set_mem_state_both(0xc8000, 0x8000, ((dev->regs[0x02] & 0x02) ? enabled_shadow : disabled_shadow));
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mem_set_mem_state_both(0xd0000, 0x10000, ((dev->regs[0x02] & 0x04) ? enabled_shadow : disabled_shadow));
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mem_set_mem_state_both(0xe0000, 0x10000, ((dev->regs[0x02] & 0x08) ? enabled_shadow : disabled_shadow));
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mem_set_mem_state_both(0xf0000, 0x10000, ((dev->regs[0x02] & 0x10) ? enabled_shadow : disabled_shadow));
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}
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static void
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acc2168_write(uint16_t addr, uint8_t val, void *p)
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{
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acc2168_t *dev = (acc2168_t *)p;
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if (!(addr & 1))
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dev->reg_idx = val;
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else {
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dev->regs[dev->reg_idx] = val;
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switch (dev->reg_idx) {
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case 0x02:
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acc2168_shadow_recalc(dev);
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break;
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}
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}
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}
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static uint8_t
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acc2168_read(uint16_t addr, void *p)
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{
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acc2168_t *dev = (acc2168_t *)p;
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if (!(addr & 1))
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return dev->reg_idx;
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return dev->regs[dev->reg_idx];
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}
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static void
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acc2168_close(void *priv)
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{
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acc2168_t *dev = (acc2168_t *) priv;
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free(dev);
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}
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static void *
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acc2168_init(const device_t *info)
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{
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acc2168_t *dev = (acc2168_t *)malloc(sizeof(acc2168_t));
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memset(dev, 0, sizeof(acc2168_t));
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io_sethandler(0x00f2, 0x0002,
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acc2168_read, NULL, NULL, acc2168_write, NULL, NULL, dev);
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device_add(&port_92_inv_device);
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return dev;
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}
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const device_t acc2168_device = {
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"ACC 2168",
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0,
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0,
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acc2168_init, acc2168_close, NULL,
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{ NULL }, NULL, NULL,
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NULL
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};
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