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Mockingboard: Reading 6522's IER now returns 0x80|IER. (Fixes #567)

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tomcw 2018-06-17 18:47:57 +01:00
parent 6ad2621282
commit 7f478fa36c
1 changed files with 1 additions and 1 deletions
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source/Mockingboard.cpp
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@ -549,7 +549,7 @@ static BYTE SY6522_Read(BYTE nDevice, BYTE nReg)
nValue = pMB->sy6522.IFR;
break;
case 0x0e: // IER
nValue = 0x80; // Datasheet says this is 0x80|IER
nValue = 0x80 | pMB->sy6522.IER; // GH#567
break;
case 0x0f: // ORA_NO_HS
nValue = pMB->sy6522.ORA;