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Altered device memory mapping.

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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
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32
src/dma.c
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@ -3,6 +3,7 @@
#include "dma.h"
#include "fdc.h"
#include "io.h"
#include "mem.h"
#include "video.h"
extern int ins;
@ -256,39 +257,12 @@ void dma16_init()
uint8_t _dma_read(uint32_t addr)
{
switch (addr&0xFFFF8000)
{
/* case 0xA0000: case 0xA8000:
return video_read_a000(addr, NULL);
case 0xB0000:
return video_read_b000(addr, NULL);
case 0xB8000:
return video_read_b800(addr, NULL);*/
}
if (isram[addr>>16]) return ram[addr];
return 0xff;
return mem_readb_phys(addr);
}
void _dma_write(uint32_t addr, uint8_t val)
{
pclog("_dma_write %08X %02X\n", addr, val);
switch (addr&0xFFFF8000)
{
/* case 0xA0000: case 0xA8000:
video_write_a000(addr,val, NULL);
return;
case 0xB0000:
video_write_b000(addr,val, NULL);
return;
case 0xB8000:
video_write_b800(addr,val, NULL);
return;
case 0xC0000: case 0xC8000: case 0xD0000: case 0xD8000:
case 0xE0000: case 0xE8000: case 0xF0000: case 0xF8000:
return;*/
}
if (isram[addr >> 16])
ram[addr] = val;
mem_writeb_phys(addr, val);
}
/*void writedma2(uint8_t val)
{