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Correct status unset-bit masks. #1453

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merged 1 commit into from
Jan 12, 2025
Merged

Correct status unset-bit masks. #1453

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2 changes: 1 addition & 1 deletion Machines/Commodore/Plus4/Interrupts.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -32,7 +32,7 @@ struct Interrupts {
};

uint8_t status() const {
return status_ | ((status_ & mask_) ? 0x80 : 0x00) | 0x21;
return status_ | ((status_ & mask_) ? 0x80 : 0x00) | 0x25;
}

uint8_t mask() const {
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2 changes: 1 addition & 1 deletion Machines/Commodore/Plus4/Plus4.cpp
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Expand Up @@ -378,7 +378,7 @@ class ConcreteMachine:
} break;
case 0xff09: *value = interrupts_.status(); break;
case 0xff0a:
*value = interrupts_.mask() | video_.read<0xff0a>() | 0x60;
*value = interrupts_.mask() | video_.read<0xff0a>() | 0xa0;
break;
case 0xff0b: *value = video_.read<0xff0b>(); break;
case 0xff0c: *value = video_.read<0xff0c>(); break;
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