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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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17
src/vid_svga.c
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@ -139,21 +139,20 @@ void svga_out(uint16_t addr, uint8_t val, void *p)
pclog("svga_out recalcmapping %p\n", svga);
if ((svga->gdcreg[6] & 0xc) != (val & 0xc))
{
mem_removehandler(0xa0000, 0x20000, svga_read, svga_readw, svga_readl, svga_write, svga_writew, svga_writel, p);
pclog("Write mapping %02X\n", val);
switch (val&0xC)
{
case 0x0: /*128k at A0000*/
mem_sethandler(0xa0000, 0x20000, svga_read, svga_readw, svga_readl, svga_write, svga_writew, svga_writel, p);
mem_mapping_set_addr(&svga->mapping, 0xa0000, 0x20000);
break;
case 0x4: /*64k at A0000*/
mem_sethandler(0xa0000, 0x10000, svga_read, svga_readw, svga_readl, svga_write, svga_writew, svga_writel, p);
mem_mapping_set_addr(&svga->mapping, 0xa0000, 0x10000);
break;
case 0x8: /*32k at B0000*/
mem_sethandler(0xb0000, 0x08000, svga_read, svga_readw, svga_readl, svga_write, svga_writew, svga_writel, p);
mem_mapping_set_addr(&svga->mapping, 0xb0000, 0x08000);
break;
case 0xC: /*32k at B8000*/
mem_sethandler(0xb8000, 0x08000, svga_read, svga_readw, svga_readl, svga_write, svga_writew, svga_writel, p);
mem_mapping_set_addr(&svga->mapping, 0xb8000, 0x08000);
break;
}
}
@ -641,7 +640,9 @@ int svga_init(svga_t *svga, void *p, int memsize,
svga->video_out = video_out;
svga->hwcursor_draw = hwcursor_draw;
// _svga_recalctimings(svga);
mem_mapping_add(&svga->mapping, 0xa0000, 0x20000, svga_read, svga_readw, svga_readl, svga_write, svga_writew, svga_writel, svga);
timer_add(svga_poll, &svga->vidtime, TIMER_ALWAYS_ENABLED, svga);
vramp = svga->vram;
return 0;
@ -1161,7 +1162,7 @@ void svga_writew(uint32_t addr, uint16_t val, void *p)
cycles -= video_timing_w;
cycles_lost += video_timing_w;
if (svga_output) pclog("Writew %05X ", addr);
if (svga_output) pclog("svga_writew: %05X ", addr);
addr = (addr & 0xffff) + svga->write_bank;
addr &= 0x7FFFFF;
if (addr >= svga->vram_limit)
@ -1189,7 +1190,7 @@ void svga_writel(uint32_t addr, uint32_t val, void *p)
cycles -= video_timing_l;
cycles_lost += video_timing_l;
if (svga_output) pclog("Writel %05X ", addr);
if (svga_output) pclog("svga_writel: %05X ", addr);
addr = (addr & 0xffff) + svga->write_bank;
addr &= 0x7FFFFF;
if (addr >= svga->vram_limit)