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Fix read latch address on AVGA2/Cirrus Logic cards.

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This commit is contained in:
SarahW 2020-01-20 18:04:29 +00:00
commit cbcc5d126a
1 changed files with 6 additions and 1 deletions
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7
src/vid_cl5429.c
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@ -1098,13 +1098,18 @@ uint8_t gd5429_read_linear(uint32_t addr, void *p)
svga_t *svga = &gd5429->svga;
uint8_t temp, temp2, temp3, temp4;
int readplane = svga->readplane;
uint32_t latch_addr = (addr << 2) & svga->decode_mask;
uint32_t latch_addr;
cycles -= video_timing_read_b;
cycles_lost += video_timing_read_b;
egareads++;
if (svga->gdcreg[0xb] & GRB_X8_ADDRESSING)
latch_addr = (addr << 3) & svga->decode_mask;
else
latch_addr = (addr << 2) & svga->decode_mask;
if (svga->gdcreg[0xb] & GRB_X8_ADDRESSING)
addr <<= 3;
else if (svga->chain4 || svga->fb_only)