Retro/pcem
Watch
1
0
Fork
You've already forked pcem
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Altered device memory mapping.

Browse source
This commit is contained in:
TomW 2013-10-19 17:06:55 +01:00
commit 7735e82085
43 changed files with 662 additions and 381 deletions
Download patch file Download diff file Expand all files Collapse all files

10
src/vid_ega.c
View file

@ -96,21 +96,20 @@ void ega_out(uint16_t addr, uint8_t val, void *p)
ega->readmode = val & 8;
break;
case 6:
mem_removehandler(0xa0000, 0x20000, ega_read, NULL, NULL, ega_write, NULL, NULL, ega);
// pclog("Write mapping %02X\n", val);
switch (val & 0xc)
{
case 0x0: /*128k at A0000*/
mem_sethandler(0xa0000, 0x20000, ega_read, NULL, NULL, ega_write, NULL, NULL, ega);
mem_mapping_set_addr(&ega->mapping, 0xa0000, 0x20000);
break;
case 0x4: /*64k at A0000*/
mem_sethandler(0xa0000, 0x10000, ega_read, NULL, NULL, ega_write, NULL, NULL, ega);
mem_mapping_set_addr(&ega->mapping, 0xa0000, 0x10000);
break;
case 0x8: /*32k at B0000*/
mem_sethandler(0xb0000, 0x08000, ega_read, NULL, NULL, ega_write, NULL, NULL, ega);
mem_mapping_set_addr(&ega->mapping, 0xb0000, 0x08000);
break;
case 0xC: /*32k at B8000*/
mem_sethandler(0xb8000, 0x08000, ega_read, NULL, NULL, ega_write, NULL, NULL, ega);
mem_mapping_set_addr(&ega->mapping, 0xb8000, 0x08000);
break;
}
break;
@ -814,6 +813,7 @@ void *ega_standalone_init()
ega_init(ega);
mem_mapping_add(&ega->mapping, 0xa0000, 0x20000, ega_read, NULL, NULL, ega_write, NULL, NULL, ega);
timer_add(ega_poll, &ega->vidtime, TIMER_ALWAYS_ENABLED, ega);
io_sethandler(0x03a0, 0x0040, ega_in, NULL, NULL, ega_out, NULL, NULL, ega);
return ega;