138 lines
2.9 KiB
C
138 lines
2.9 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 various Compaq PC's.
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*
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* Version: @(#)m_at_compaq.c 1.0.4 2018/02/14
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*
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* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
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* Miran Grca, <mgrca8@gmail.com>
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* TheCollector1995, <mariogplayer@gmail.com>
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*
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* Copyright 2008-2018 Sarah Walker.
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* Copyright 2016-2018 Miran Grca.
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*/
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#include <stdio.h>
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#include <stdint.h>
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#include <string.h>
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#include <wchar.h>
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#include "../86box.h"
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#include "../cpu/cpu.h"
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#include "../mem.h"
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#include "../rom.h"
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#include "../device.h"
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#include "../floppy/fdd.h"
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#include "../floppy/fdc.h"
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#include "../disk/hdc.h"
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#include "../disk/hdc_ide.h"
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#include "machine.h"
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/* Compaq Deskpro 386 remaps RAM from 0xA0000-0xFFFFF to 0xFA0000-0xFFFFFF */
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static mem_mapping_t ram_mapping;
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static uint8_t
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read_ram(uint32_t addr, void *priv)
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{
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addr = (addr & 0x7ffff) + 0x80000;
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addreadlookup(mem_logical_addr, addr);
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return(ram[addr]);
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}
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static uint16_t
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read_ramw(uint32_t addr, void *priv)
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{
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addr = (addr & 0x7ffff) + 0x80000;
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addreadlookup(mem_logical_addr, addr);
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return(*(uint16_t *)&ram[addr]);
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}
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static uint32_t
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read_raml(uint32_t addr, void *priv)
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{
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addr = (addr & 0x7ffff) + 0x80000;
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addreadlookup(mem_logical_addr, addr);
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return(*(uint32_t *)&ram[addr]);
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}
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static void
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write_ram(uint32_t addr, uint8_t val, void *priv)
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{
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addr = (addr & 0x7ffff) + 0x80000;
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addwritelookup(mem_logical_addr, addr);
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mem_write_ramb_page(addr, val, &pages[addr >> 12]);
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}
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static void
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write_ramw(uint32_t addr, uint16_t val, void *priv)
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{
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addr = (addr & 0x7ffff) + 0x80000;
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addwritelookup(mem_logical_addr, addr);
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mem_write_ramw_page(addr, val, &pages[addr >> 12]);
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}
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static void
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write_raml(uint32_t addr, uint32_t val, void *priv)
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{
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addr = (addr & 0x7ffff) + 0x80000;
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addwritelookup(mem_logical_addr, addr);
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mem_write_raml_page(addr, val, &pages[addr >> 12]);
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}
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void
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machine_at_compaq_init(machine_t *model)
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{
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machine_at_top_remap_init(model);
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device_add(&fdc_at_device);
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mem_mapping_add(&ram_mapping, 0xfa0000, 0x60000,
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read_ram, read_ramw, read_raml,
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write_ram, write_ramw, write_raml,
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0xa0000+ram, MEM_MAPPING_INTERNAL, NULL);
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switch(model->id) {
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#ifdef PORTABLE3
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case ROM_DESKPRO_386:
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if (hdc_current == 1)
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device_add(&ide_isa_device);
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break;
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#endif
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case ROM_PORTABLE:
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break;
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case ROM_PORTABLEII:
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break;
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#ifdef PORTABLE3
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case ROM_PORTABLEIII:
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machine_olim24_video_init();
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break;
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case ROM_PORTABLEIII386:
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machine_olim24_video_init();
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if (hdc_current == 1)
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device_add(&ide_isa_device);
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break;
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#endif
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}
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}
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