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Added simulation of PCI access timing to Voodoo.

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This commit is contained in:
TomW 2015-08-22 17:03:37 +01:00
commit 5b1e7aece0
5 changed files with 163 additions and 128 deletions
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20
src/vid_voodoo.c
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@ -263,7 +263,9 @@ typedef struct voodoo_t
int flush;
int scrfilter;
uint32_t last_write_addr;
rgb_t clutData[33];
int clutData_dirty;
rgb_t clutData256[256];
@ -3503,6 +3505,8 @@ static uint16_t voodoo_readw(uint32_t addr, void *p)
addr &= 0xffffff;
cycles -= pci_nonburst_time;
if ((addr & 0xc00000) == 0x400000) /*Framebuffer*/
{
voodoo->flush = 1;
@ -3528,6 +3532,8 @@ static uint32_t voodoo_readl(uint32_t addr, void *p)
voodoo->rd_count++;
addr &= 0xffffff;
cycles -= pci_nonburst_time;
if (addr & 0x800000) /*Texture*/
{
}
@ -3606,6 +3612,12 @@ static void voodoo_writew(uint32_t addr, uint16_t val, void *p)
voodoo->wr_count++;
addr &= 0xffffff;
if (addr == voodoo->last_write_addr+4)
cycles -= pci_burst_time;
else
cycles -= pci_nonburst_time;
voodoo->last_write_addr = addr;
if ((addr & 0xc00000) == 0x400000) /*Framebuffer*/
queue_command(voodoo, addr | FIFO_WRITEW_FB, val);
}
@ -3640,6 +3652,12 @@ static void voodoo_writel(uint32_t addr, uint32_t val, void *p)
voodoo->wr_count++;
addr &= 0xffffff;
if (addr == voodoo->last_write_addr+4)
cycles -= pci_burst_time;
else
cycles -= pci_nonburst_time;
voodoo->last_write_addr = addr;
if (addr & 0x800000) /*Texture*/
{
voodoo->tex_count++;