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handle 'bad' dma better
[picodrive.git]
/
pico
/
pico.c
diff --git
a/pico/pico.c
b/pico/pico.c
index
2e561c6
..
76c5fe9
100644
(file)
--- a/
pico/pico.c
+++ b/
pico/pico.c
@@
-253,10
+253,9
@@
PICO_INTERNAL int CheckDMA(void)
xfers_can = dma_timings[dma_op];
\r
if(xfers <= xfers_can)
\r
{
\r
xfers_can = dma_timings[dma_op];
\r
if(xfers <= xfers_can)
\r
{
\r
- if(dma_op&2) Pico.video.status&=~2; // dma no longer busy
\r
- else {
\r
+ Pico.video.status &= ~SR_DMA;
\r
+ if (!(dma_op & 2))
\r
burn = xfers * dma_bsycles[dma_op] >> 8; // have to be approximate because can't afford division..
\r
burn = xfers * dma_bsycles[dma_op] >> 8; // have to be approximate because can't afford division..
\r
- }
\r
Pico.m.dma_xfers = 0;
\r
} else {
\r
if(!(dma_op&2)) burn = 488;
\r
Pico.m.dma_xfers = 0;
\r
} else {
\r
if(!(dma_op&2)) burn = 488;
\r