52 lines
1.6 KiB
C
52 lines
1.6 KiB
C
#include "ibm.h"
|
|
#include "mem.h"
|
|
|
|
/* Compaq Deskpro 386 remaps RAM from 0xA0000-0xFFFFF to 0xFA0000-0xFFFFFF */
|
|
|
|
static mem_mapping_t compaq_ram_mapping;
|
|
|
|
uint8_t compaq_read_ram(uint32_t addr, void *priv)
|
|
{
|
|
addr = (addr & 0x7ffff) + 0x80000;
|
|
addreadlookup(mem_logical_addr, addr);
|
|
return ram[addr];
|
|
}
|
|
uint16_t compaq_read_ramw(uint32_t addr, void *priv)
|
|
{
|
|
addr = (addr & 0x7ffff) + 0x80000;
|
|
addreadlookup(mem_logical_addr, addr);
|
|
return *(uint16_t *)&ram[addr];
|
|
}
|
|
uint32_t compaq_read_raml(uint32_t addr, void *priv)
|
|
{
|
|
addr = (addr & 0x7ffff) + 0x80000;
|
|
addreadlookup(mem_logical_addr, addr);
|
|
return *(uint32_t *)&ram[addr];
|
|
}
|
|
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]);
|
|
}
|
|
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]);
|
|
}
|
|
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]);
|
|
}
|
|
|
|
void compaq_init()
|
|
{
|
|
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);
|
|
}
|