DFT_UNKNOWN };
enum { DLS_OFF, DLS_READ, DLS_WRITE };
-// N.B.: All 32/16-bit values are stored in little endian. Which means, to
-// read/write them safely, we need to use translators as this code may or
-// may not be compiled on an architecture that supports little endian
-// natively.
-
-struct WOZTrack
-{
- uint8_t bits[6646];
- uint16_t byteCount;
- uint16_t bitCount;
- uint16_t splicePoint;
- uint8_t spliceNibble;
- uint8_t spliceBitCount;
- uint16_t reserved;
-};
-
-struct WOZMetadata
-{
- uint8_t metaTag[4]; // "META"
- uint32_t metaSize; // Size of the META chunk
- uint8_t data[]; // Variable length array of metadata
-};
-
-struct WOZ
-{
- // Header
- uint8_t magic[8]; // "WOZ1" $FF $0A $0D $0A
- uint32_t crc32; // CRC32 of the remaining data in the file
-
- // INFO chunk
- uint8_t infoTag[4]; // "INFO"
- uint32_t infoSize; // Always 60 bytes long
- uint8_t infoVersion; // Currently 1
- uint8_t diskType; // 1 = 5 1/4", 2 = 3 1/2"
- uint8_t writeProtected; // 1 = write protected disk
- uint8_t synchronized; // 1 = cross-track sync was used during imaging
- uint8_t cleaned; // 1 = fake bits removed from image
- uint8_t creator[32]; // Software that made this image, padded with 0x20
- uint8_t pad1[23]; // Padding to 60 bytes
-
- // TMAP chunk
- uint8_t tmapTag[4]; // "TMAP"
- uint32_t tmapSize; // Always 160 bytes long
- uint8_t tmap[160]; // Track map, with empty tracks set to $FF
-
- // TRKS chunk
- uint8_t trksTag[4]; // "TRKS"
- uint32_t trksSize; // Varies, depending on # of tracks imaged
- WOZTrack track[]; // Variable length array for the track data proper
-};
-
-struct WOZTrack2
-{
- uint16_t startingBlock; // 512 byte block # where this track starts (relative to the start of the file)
- uint16_t blockCount; // # of blocks in this track
- uint32_t bitCount; // # of bits in this track
-};
-
-struct WOZ2
-{
- // Header
- uint8_t magic[8]; // "WOZ2" $FF $0A $0D $0A
- uint32_t crc32; // CRC32 of the remaining data in the file
-
- // INFO chunk
- uint8_t infoTag[4]; // "INFO"
- uint32_t infoSize; // Always 60 bytes long
- uint8_t infoVersion; // Currently 1
- uint8_t diskType; // 1 = 5 1/4", 2 = 3 1/2"
- uint8_t writeProtected; // 1 = write protected disk
- uint8_t synchronized; // 1 = cross-track sync was used during imaging
- uint8_t cleaned; // 1 = fake bits removed from image
- uint8_t creator[32]; // Software that made this image, padded with 0x20
- uint8_t diskSides; // 5 1/4" disks always have 1 side (v2 from here on)
- uint8_t bootSectorFmt; // 5 1/4" only (0=unknown, 1=16 sector, 2=13 sector, 3=both)
- uint8_t optimalBitTmg; // In ticks, standard for 5 1/4" is 32 (4 µs)
- uint16_t compatibleHW; // Bitfield showing hardware compatibility (1=][, 2=][+, 4=//e (unenh), 8=//c, 16=//e (enh), 32=IIgs, 64=//c+, 128=///, 256=///+)
- uint16_t requiredRAM; // Minimum size in K, 0=unknown
- uint16_t largestTrack; // Number of 512 byte blocks used by largest track
- uint8_t pad1[14]; // Padding to 60 bytes
-
- // TMAP chunk
- uint8_t tmapTag[4]; // "TMAP"
- uint32_t tmapSize; // Always 160 bytes long
- uint8_t tmap[160]; // Track map, with empty tracks set to $FF
-
- // TRKS chunk
- uint8_t trksTag[4]; // "TRKS"
- uint32_t trksSize; // Varies, depending on # of tracks imaged
- WOZTrack2 track[160]; // Actual track info (corresponding to TMAP data)
- uint8_t data[]; // Variable length array for the track data proper
-};
+class WOZ2;
class FloppyDrive
{
int DriveLightStatus(uint8_t driveNum = 0);
void SaveState(FILE *);
void LoadState(FILE *);
- void InitWOZ(uint8_t driveNum = 0);
- bool CheckWOZ(const uint8_t * wozData, uint32_t wozSize, uint8_t driveNum = 0);
- bool SaveWOZ(uint8_t driveNum);
private:
uint32_t ReadLong(FILE *);
void WriteLong(FILE *, uint32_t);
- void WriteLongLE(FILE *, uint32_t);
- void WriteWordLE(FILE *, uint16_t);
- void WriteZeroes(FILE *, uint32_t);
// I/O functions ($C0Ex accesses)
protected:
void DetectImageType(const char * filename, uint8_t driveNum);
- void WriteBits(uint8_t * dest, uint8_t * src, uint16_t bits, uint16_t * start);
+ void WriteBits(uint8_t * dest, const uint8_t * src, uint16_t bits, uint16_t * start);
void WOZifyImage(uint8_t driveNum);
private:
uint8_t phase[2];
uint8_t headPos[2];
bool ioHappened;
+ bool diskImageReady;
uint32_t currentPos[2];
- WOZ * woz[2];
uint8_t cpuDataBus;
uint8_t slSwitch; // Shift/Load soft switch
uint32_t driveOffTimeout;
uint8_t zeroBitCount;
uint16_t trackLength[2];
-
- // And here are some private class variables (to reduce function
- // redundancy):
- static uint8_t doSector[16];
- static uint8_t poSector[16];
- static uint8_t wozHeader[9];
- static uint8_t wozHeader2[9];
- static uint8_t standardTMAP[141];
- static uint8_t sequencerROM[256];
- static uint8_t bitMask[8];
- static char nameBuf[MAX_PATH];
};
+// Exported functions/variables
void InstallFloppy(uint8_t slot);
extern FloppyDrive floppyDrive[];
projects / apple2 / blobdiff