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932c62fd34
Try to figure out which of the 100C0-100FF or 101C0-101FF sections contains the actual RAM
103 lines
No EOL
2.4 KiB
C++
103 lines
No EOL
2.4 KiB
C++
#pragma once
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#include "pch.h"
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class SpcFileData
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{
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public:
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string SongTitle;
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string GameTitle;
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string Dumper;
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string Artist;
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string Comment;
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uint16_t PC;
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uint8_t A;
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uint8_t X;
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uint8_t Y;
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uint8_t PS;
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uint8_t SP;
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uint8_t CpuRegs[4];
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uint8_t ControlReg;
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uint8_t RamRegs[2];
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uint8_t TimerOutput[3];
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uint8_t TimerTarget[3];
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uint8_t DspRegSelect;
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uint8_t DspRegs[128];
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uint8_t SpcRam[0x10000];
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bool HasExtraRam = false;
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uint8_t SpcExtraRam[0x40] = {};
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uint32_t TrackLength;
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uint32_t FadeLength;
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SpcFileData(uint8_t* spcData, uint32_t size)
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{
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SongTitle = string(spcData + 0x2E, spcData + 0x2E + 0x20);
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GameTitle = string(spcData + 0x4E, spcData + 0x4E + 0x20);
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Dumper = string(spcData + 0x6E, spcData + 0x6E + 0x10);
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Artist = string(spcData + 0xB1, spcData + 0xB1 + 0x20);
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Comment = string(spcData + 0x7E, spcData + 0x7E + 0x20);
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string strTrackLength = string(spcData + 0xA9, spcData + 0xA9 + 0x03);
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string strFadeLength = string(spcData + 0xAC, spcData + 0xAC + 0x05);
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bool isStringValue = true;
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for(char c : strTrackLength) {
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if(c != 0 && (c < '0' || c > '9')) {
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isStringValue = false;
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}
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}
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TrackLength = 0;
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FadeLength = 0;
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if(isStringValue) {
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try {
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if(strTrackLength.size() && strTrackLength[0] != 0) {
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TrackLength = std::stoi(strTrackLength);
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}
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if(strFadeLength.size() && strFadeLength[0] != 0) {
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FadeLength = std::stoi(strFadeLength);
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}
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} catch(std::exception&) {
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}
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}
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memcpy(SpcRam, spcData + 0x100, 0x10000);
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if(size >= 0x10200) {
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//Some SPC files don't have this data (0x10180 bytes instead of 0x10200 bytes)
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memcpy(SpcExtraRam, spcData + 0x101C0, 0x40);
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HasExtraRam = true;
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}
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memcpy(DspRegs, spcData + 0x10100, 128);
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PC = spcData[0x25] | (spcData[0x26] << 8);
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A = spcData[0x27];
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X = spcData[0x28];
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Y = spcData[0x29];
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PS = spcData[0x2A];
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SP = spcData[0x2B];
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ControlReg = spcData[0x100 + 0xF1];
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DspRegSelect = spcData[0x100 + 0xF2];
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CpuRegs[0] = spcData[0x100 + 0xF4];
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CpuRegs[1] = spcData[0x100 + 0xF5];
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CpuRegs[2] = spcData[0x100 + 0xF6];
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CpuRegs[3] = spcData[0x100 + 0xF7];
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RamRegs[0] = spcData[0x100 + 0xF8];
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RamRegs[1] = spcData[0x100 + 0xF9];
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TimerTarget[0] = spcData[0x100 + 0xFA];
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TimerTarget[1] = spcData[0x100 + 0xFB];
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TimerTarget[2] = spcData[0x100 + 0xFC];
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TimerOutput[0] = spcData[0x100 + 0xFD];
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TimerOutput[1] = spcData[0x100 + 0xFE];
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TimerOutput[2] = spcData[0x100 + 0xFF];
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}
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}; |