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Add readable/writable byte at $43xB and $43xF

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NovaSquirrel 2020-10-06 01:04:38 -04:00
parent 89199f298a
commit 47000bd6a5
2 changed files with 22 additions and 1 deletions
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21
Core/DmaController.cpp
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@ -491,6 +491,15 @@ void DmaController::Write(uint16_t addr, uint8_t value)
channel.HdmaLineCounterAndRepeat = value;
break;
}
case 0x430B: case 0x431B: case 0x432B: case 0x433B: case 0x434B: case 0x435B: case 0x436B: case 0x437B:
case 0x430F: case 0x431F: case 0x432F: case 0x433F: case 0x434F: case 0x435F: case 0x436F: case 0x437F:
{
//UNUSEDx - HDMA Indirect Address bank byte (x=0-7)
DmaChannelConfig& channel = _channel[(addr & 0x70) >> 4];
channel.UnusedByte = value;
}
}
}
@ -577,6 +586,15 @@ uint8_t DmaController::Read(uint16_t addr)
DmaChannelConfig &channel = _channel[(addr & 0x70) >> 4];
return channel.HdmaLineCounterAndRepeat;
}
case 0x430B: case 0x431B: case 0x432B: case 0x433B: case 0x434B: case 0x435B: case 0x436B: case 0x437B:
case 0x430F: case 0x431F: case 0x432F: case 0x433F: case 0x434F: case 0x435F: case 0x436F: case 0x437F:
{
//UNUSEDx - HDMA Indirect Address bank byte (x=0-7)
DmaChannelConfig& channel = _channel[(addr & 0x70) >> 4];
return channel.UnusedByte;
}
}
return _memoryManager->GetOpenBus();
}
@ -600,7 +618,8 @@ void DmaController::Serialize(Serializer &s)
_channel[i].HdmaBank, _channel[i].HdmaFinished, _channel[i].HdmaIndirectAddressing,
_channel[i].HdmaLineCounterAndRepeat, _channel[i].HdmaTableAddress,
_channel[i].InvertDirection, _channel[i].SrcAddress, _channel[i].SrcBank, _channel[i].TransferMode,
_channel[i].TransferSize, _channel[i].UnusedFlag, _channel[i].DmaActive
_channel[i].TransferSize, _channel[i].UnusedFlag, _channel[i].DmaActive,
_channel[i].UnusedByte
);
}
}

2
Core/DmaControllerTypes.h
View file

@ -24,4 +24,6 @@ struct DmaChannelConfig
bool HdmaFinished;
bool UnusedFlag;
uint8_t UnusedByte; // 43xB and 43xF
};