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Mockingboard: Better support for stop/starting 6522's IER.TIMERx (#567)

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tomcw 2018-06-20 22:12:19 +01:00
parent 7f478fa36c
commit 9bc7feb37e
1 changed files with 3 additions and 3 deletions
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6
source/Mockingboard.cpp
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@ -480,11 +480,11 @@ static void SY6522_Write(BYTE nDevice, BYTE nReg, BYTE nValue)
pMB->sy6522.IER |= nValue; pMB->sy6522.IER |= nValue;
UpdateIFR(pMB, 0); UpdateIFR(pMB, 0);
// Check if active timer changed from non-interrupt (polling IFR) to interrupt: // Check if a timer interrupt has been enabled (regardless of if there's an active timer or not): GH#567
if ((pMB->sy6522.IER & IxR_TIMER1) && pMB->bTimer1Active) if (pMB->sy6522.IER & IxR_TIMER1)
StartTimer1(pMB); StartTimer1(pMB);
if ((pMB->sy6522.IER & IxR_TIMER2) && pMB->bTimer2Active) if (pMB->sy6522.IER & IxR_TIMER2)
StartTimer2(pMB); StartTimer2(pMB);
} }
break; break;