74 lines
1.9 KiB
C
74 lines
1.9 KiB
C
/* Copyright holders: Sarah Walker
|
|
see COPYING for more details
|
|
*/
|
|
#include <stdio.h>
|
|
#include <stdint.h>
|
|
#include <string.h>
|
|
#include <wchar.h>
|
|
#include "../86box.h"
|
|
#include "../ibm.h"
|
|
#include "../cpu/cpu.h"
|
|
#include "../mem.h"
|
|
#include "machine.h"
|
|
|
|
|
|
/* Compaq Deskpro 386 remaps RAM from 0xA0000-0xFFFFF to 0xFA0000-0xFFFFFF */
|
|
|
|
static mem_mapping_t compaq_ram_mapping;
|
|
|
|
static uint8_t compaq_read_ram(uint32_t addr, void *priv)
|
|
{
|
|
addr = (addr & 0x7ffff) + 0x80000;
|
|
addreadlookup(mem_logical_addr, addr);
|
|
return ram[addr];
|
|
}
|
|
|
|
|
|
static uint16_t compaq_read_ramw(uint32_t addr, void *priv)
|
|
{
|
|
addr = (addr & 0x7ffff) + 0x80000;
|
|
addreadlookup(mem_logical_addr, addr);
|
|
return *(uint16_t *)&ram[addr];
|
|
}
|
|
|
|
|
|
static uint32_t compaq_read_raml(uint32_t addr, void *priv)
|
|
{
|
|
addr = (addr & 0x7ffff) + 0x80000;
|
|
addreadlookup(mem_logical_addr, addr);
|
|
return *(uint32_t *)&ram[addr];
|
|
}
|
|
|
|
|
|
static void compaq_write_ram(uint32_t addr, uint8_t val, void *priv)
|
|
{
|
|
addr = (addr & 0x7ffff) + 0x80000;
|
|
addwritelookup(mem_logical_addr, addr);
|
|
mem_write_ramb_page(addr, val, &pages[addr >> 12]);
|
|
}
|
|
|
|
|
|
static void compaq_write_ramw(uint32_t addr, uint16_t val, void *priv)
|
|
{
|
|
addr = (addr & 0x7ffff) + 0x80000;
|
|
addwritelookup(mem_logical_addr, addr);
|
|
mem_write_ramw_page(addr, val, &pages[addr >> 12]);
|
|
}
|
|
|
|
|
|
static void compaq_write_raml(uint32_t addr, uint32_t val, void *priv)
|
|
{
|
|
addr = (addr & 0x7ffff) + 0x80000;
|
|
addwritelookup(mem_logical_addr, addr);
|
|
mem_write_raml_page(addr, val, &pages[addr >> 12]);
|
|
}
|
|
|
|
|
|
static void compaq_init(void)
|
|
{
|
|
mem_mapping_add(&compaq_ram_mapping, 0xfa0000, 0x60000,
|
|
compaq_read_ram, compaq_read_ramw, compaq_read_raml,
|
|
compaq_write_ram, compaq_write_ramw, compaq_write_raml,
|
|
ram + 0xa0000, MEM_MAPPING_INTERNAL, NULL);
|
|
}
|