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Initial submission of the PCem-Experimental source code.

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This commit is contained in:
OBattler
2016-06-26 00:34:39 +02:00
parent 09d7c4384f
commit fd2a5bc9f5
610 changed files with 184352 additions and 0 deletions
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51
src/compaq.c Normal file
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#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);
}