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[NTVDM]

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Fix the PIT square wave generator.


svn path=/branches/ntvdm/; revision=61151
This commit is contained in:
Aleksandar Andrejevic 2013-11-30 03:59:26 +00:00
parent 9c6b9c9bab
commit d49a1c16b2
1 changed files with 6 additions and 4 deletions
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10
subsystems/ntvdm/timer.c
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@ -277,12 +277,12 @@ VOID PitDecrementCount(DWORD Count)
} }
else else
{ {
/* Clear the count */
Count = 0;
/* Decrease the value */ /* Decrease the value */
PitChannels[i].CurrentValue -= Count * 2; PitChannels[i].CurrentValue -= Count * 2;
/* Clear the count */
Count = 0;
/* Did it fall to zero? */ /* Did it fall to zero? */
if (PitChannels[i].CurrentValue == 0) if (PitChannels[i].CurrentValue == 0)
{ {
@ -304,7 +304,9 @@ VOID PitDecrementCount(DWORD Count)
} }
/* Was there any rising edge on channel 0 ? */ /* Was there any rising edge on channel 0 ? */
if ((PitChannels[i].OutputFlipFlop || ReloadCount) && (i == 0)) if (((PitChannels[i].OutputFlipFlop && (ReloadCount == 1))
|| (ReloadCount > 1))
&& (i == 0))
{ {
/* Yes, IRQ 0 */ /* Yes, IRQ 0 */
PicInterruptRequest(0); PicInterruptRequest(0);