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Video card can now be changed on Amstrad MegaPC.

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This commit is contained in:
SarahW 2018-02-25 15:13:45 +00:00
commit d28a908839
6 changed files with 52 additions and 5 deletions
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19
src/wd76c10.c
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@ -2,6 +2,7 @@
#include "fdc.h"
#include "io.h"
#include "mem.h"
#include "rom.h"
#include "serial.h"
#include "wd76c10.h"
@ -9,6 +10,13 @@ static uint16_t wd76c10_0092;
static uint16_t wd76c10_2072;
static uint16_t wd76c10_2872;
static uint16_t wd76c10_5872;
static uint16_t wd76c10_6072;
static rom_t *video_bios_rom = NULL;
void wd76c10_set_bios_rom(rom_t *rom)
{
video_bios_rom = rom;
}
uint16_t wd76c10_read(uint16_t port, void *priv)
{
@ -25,6 +33,9 @@ uint16_t wd76c10_read(uint16_t port, void *priv)
case 0x5872:
return wd76c10_5872;
case 0x6072:
return wd76c10_6072;
}
return 0;
}
@ -81,6 +92,13 @@ void wd76c10_write(uint16_t port, uint16_t val, void *priv)
case 0x5872:
wd76c10_5872 = val;
break;
case 0x6072:
wd76c10_6072 = val;
mem_mapping_disable(&video_bios_rom->mapping);
if ((val & 0xc) == 8)
mem_mapping_enable(&video_bios_rom->mapping);
break;
}
}
@ -106,4 +124,5 @@ void wd76c10_init()
io_sethandler(0x2072, 0x0002, wd76c10_readb, wd76c10_read, NULL, wd76c10_writeb, wd76c10_write, NULL, NULL);
io_sethandler(0x2872, 0x0002, wd76c10_readb, wd76c10_read, NULL, wd76c10_writeb, wd76c10_write, NULL, NULL);
io_sethandler(0x5872, 0x0002, wd76c10_readb, wd76c10_read, NULL, wd76c10_writeb, wd76c10_write, NULL, NULL);
io_sethandler(0x6072, 0x0002, wd76c10_readb, wd76c10_read, NULL, wd76c10_writeb, wd76c10_write, NULL, NULL);
}