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MB: SC01 is only mapped to the 6522 at Cn00

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This commit is contained in:
tomcw 2021-03-28 22:16:34 +01:00
parent fea5da7872
commit 2258d01184
3 changed files with 4 additions and 3 deletions
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2
source/CPU.cpp
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@ -105,7 +105,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#include "YamlHelper.h"
#define LOG_IRQ_TAKEN_AND_RTI 0
#define LOG_IRQ_TAKEN_AND_RTI 1
// 6502 Accumulator Bit Flags
#define AF_SIGN 0x80

3
source/Mockingboard.cpp
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@ -608,7 +608,8 @@ static void SY6522_Write(BYTE nDevice, BYTE nReg, BYTE nValue)
nValue &= pMB->sy6522.DDRB;
pMB->sy6522.ORB = nValue;
if( (pMB->sy6522.DDRB == 0xFF) && (pMB->sy6522.PCR == 0xB0) )
if ((nDevice&1) == 0 && // SC01 only at $Cn00 (not $Cn80)
pMB->sy6522.DDRB == 0xFF && pMB->sy6522.PCR == 0xB0)
{
// Votrax speech data
pMB->ssi263.Votrax_Write(nValue);

2
source/SSI263.cpp
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@ -40,7 +40,7 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#define LOG_SSI263 0
#define LOG_SSI263B 0 // Alternate SSI263 logging (use in conjunction with CPU.cpp's LOG_IRQ_TAKEN_AND_RTI)
#define LOG_SC01 0
#define LOG_SC01 1
// SSI263A registers:
#define SSI_DURPHON 0x00