mirror of https://github.com/JorjBauer/aiie.git
1089 lines
26 KiB
C++
1089 lines
26 KiB
C++
#include "woz.h"
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#include <string.h>
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#include "crc32.h"
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#include "nibutil.h"
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#include "version.h"
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// Block number we start packing data bits after (Woz 2.0 images)
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#define STARTBLOCK 3
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#define PREP_SECTION(f, t) { \
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uint32_t type = t; \
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if (!write32(f, type)) \
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return false; \
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if (!write32(f, 0)) \
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return false; \
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curpos = ftello(f); \
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}
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#define END_SECTION(f) { \
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long endpos = ftello(f); \
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fseeko(f, curpos-4, SEEK_SET); \
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uint32_t chunksize = endpos - curpos; \
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if (!write32(f, chunksize)) \
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return false; \
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fseeko(f, 0, SEEK_END); \
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}
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Woz::Woz()
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{
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trackPointer = 0;
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trackBitIdx = 0x80;
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trackLoopCounter = 0;
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metaData = NULL;
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memset(&quarterTrackMap, 255, sizeof(quarterTrackMap));
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memset(&di, 0, sizeof(diskInfo));
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memset(&tracks, 0, sizeof(tracks));
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}
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Woz::~Woz()
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{
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// FIXME: free all the stuff
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}
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uint8_t Woz::getNextWozBit(uint8_t track)
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{
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if (trackBitIdx == 0x80) {
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// need another byte out of the track stream
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trackByte = tracks[track].trackData[trackPointer++];
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if (trackPointer >= tracks[track].bitCount / 8) {
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trackPointer = 0;
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trackLoopCounter++;
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}
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}
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uint8_t ret = (trackByte & trackBitIdx) ? 1 : 0;
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trackBitIdx >>= 1;
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if (!trackBitIdx) {
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trackBitIdx = 0x80;
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}
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return ret;
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}
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uint8_t Woz::fakeBit()
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{
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// 30% should be 1s
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return 0;
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}
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uint8_t Woz::nextDiskBit(uint8_t track)
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{
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if (track == 0xFF)
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return fakeBit();
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static uint8_t head_window = 0;
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head_window <<= 1;
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head_window |= getNextWozBit(track);
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if ((head_window & 0x0f) != 0x00) {
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return (head_window & 0x02) >> 1;
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} else {
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return fakeBit();
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}
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}
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uint8_t Woz::nextDiskByte(uint8_t track)
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{
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uint8_t d = 0;
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while ((d & 0x80) == 0) {
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d <<= 1;
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d |= nextDiskBit(track);
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}
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return d;
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}
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static bool write8(FILE *f, uint8_t v)
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{
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if (fwrite(&v, 1, 1, f) != 1)
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return false;
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return true;
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}
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static bool write16(FILE *f, uint16_t v)
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{
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if (!write8(f, v & 0xFF))
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return false;
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v >>= 8;
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if (!write8(f, v & 0xFF))
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return false;
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return true;
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}
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static bool write32(FILE *f, uint32_t v)
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{
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for (int i=0; i<4; i++) {
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if (!write8(f, v&0xFF))
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return false;
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v >>= 8;
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}
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return true;
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}
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static bool read8(FILE *f, uint8_t *toWhere)
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{
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uint8_t r;
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if (fread(&r, 1, 1, f) != 1)
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return false;
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*toWhere = r;
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return true;
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}
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static bool read16(FILE *f, uint16_t *toWhere)
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{
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uint16_t ret = 0;
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for (int i=0; i<2; i++) {
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uint8_t r;
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if (!read8(f, &r)) {
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return false;
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}
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ret >>= 8;
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ret |= (r<<8);
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}
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*toWhere = ret;
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return true;
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}
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static bool read32(FILE *f, uint32_t *toWhere)
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{
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uint32_t ret = 0;
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for (int i=0; i<4; i++) {
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uint8_t r;
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if (!read8(f, &r)) {
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return false;
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}
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ret >>= 8;
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ret |= (r<<24);
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}
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*toWhere = ret;
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return true;
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}
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bool Woz::writeFile(uint8_t version, const char *filename)
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{
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FILE *f = NULL;
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bool retval = false;
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uint32_t tmp32; // scratch 32-bit value
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off_t crcPos, endPos;
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off_t curpos; // used in macros to dynamically tell what size the chunks are
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uint32_t crcDataSize;
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uint8_t *crcData = NULL;
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if (version > 2 || !version) {
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fprintf(stderr, "ERROR: version must be 1 or 2\n");
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goto done;
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}
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f = fopen(filename, "w+");
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if (!f) {
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perror("ERROR: Unable to open output file");
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goto done;
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}
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// header
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if (version == 1) {
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tmp32 = 0x315A4F57;
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} else {
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tmp32 = 0x325A4F57;
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}
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if (!write32(f, tmp32)) {
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fprintf(stderr, "ERROR: failed to write\n");
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goto done;
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}
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tmp32 = 0x0A0D0AFF;
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if (!write32(f, tmp32)) {
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fprintf(stderr, "ERROR: failed to write\n");
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goto done;
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}
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// We'll come back and write the checksum later
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crcPos = ftello(f);
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tmp32 = 0;
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if (!write32(f, tmp32)) {
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fprintf(stderr, "ERROR: failed to write\n");
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goto done;
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}
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PREP_SECTION(f, 0x4F464E49); // 'INFO'
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if (!writeInfoChunk(version, f)) {
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fprintf(stderr, "ERROR: failed to write INFO chunk\n");
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goto done;
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}
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END_SECTION(f);
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PREP_SECTION(f, 0x50414D54); // 'TMAP'
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if (!writeTMAPChunk(version, f)) {
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fprintf(stderr, "ERROR: failed to write TMAP chunk\n");
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goto done;
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}
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END_SECTION(f);
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PREP_SECTION(f, 0x534B5254); // 'TRKS'
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if (!writeTRKSChunk(version, f)) {
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fprintf(stderr, "ERROR: failed to write TRKS chunk\n");
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goto done;
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}
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END_SECTION(f);
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// Write the metadata if we have any
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if (metaData) {
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PREP_SECTION(f, 0x4154454D); // 'META'
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if (fwrite(metaData, 1, strlen(metaData), f) != strlen(metaData)) {
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fprintf(stderr, "ERROR: failed to write META chunk\n");
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goto done;
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}
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END_SECTION(f);
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}
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// FIXME: missing the WRIT chunk, if it exists
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// Fix up the checksum
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endPos = ftello(f);
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crcDataSize = endPos-crcPos-4;
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crcData = (uint8_t *)malloc(crcDataSize);
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if (!crcData) {
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fprintf(stderr, "ERROR: failed to malloc crc data chunk\n");
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goto done;
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}
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// Read the data in for checksumming
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if (fseeko(f, crcPos+4, SEEK_SET)) {
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fprintf(stderr, "ERROR: failed to fseek to crcPos+4 (0x%llX)\n", crcPos+4);
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goto done;
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}
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tmp32 = fread(crcData, 1, crcDataSize, f);
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if (tmp32 != crcDataSize) {
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fprintf(stderr, "ERROR: failed to read in data for checksum [read %d, wanted %d]\n", tmp32, crcDataSize);
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goto done;
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}
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tmp32 = compute_crc_32(crcData, crcDataSize);
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// Write it back out
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fseeko(f, crcPos, SEEK_SET);
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if (!write32(f, tmp32)) {
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fprintf(stderr, "ERROR: failed to write CRC\n");
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goto done;
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}
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retval = true;
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done:
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if (crcData)
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free(crcData);
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if (f)
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fclose(f);
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return retval;
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}
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void Woz::_initInfo()
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{
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di.version = 2;
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di.diskType = 1;
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di.writeProtected = 0;
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di.synchronized = 0;
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di.cleaned = 0;
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sprintf(di.creator, "%.32s", VERSION_STRING);
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di.diskSides = 1;
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di.bootSectorFormat = 0;
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di.optimalBitTiming = 32;
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di.compatHardware = 0;
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di.requiredRam = 0;
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di.largestTrack = 13;
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// reset all the track data
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for (int i=0; i<160; i++) {
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memset(&tracks[i], 0, sizeof(trackInfo));
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}
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// Construct a default quarter-track mapping
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for (int i=0; i<140; i++) {
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if ((i+1)/4 < 35) {
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quarterTrackMap[i] = ((i-2) % 4 == 0) ? 0xFF : ((i+1)/4);
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} else {
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quarterTrackMap[i] = 0xFF;
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}
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}
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}
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bool Woz::readDskFile(const char *filename, uint8_t subtype)
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{
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bool retval = false;
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FILE *f = fopen(filename, "r");
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if (!f) {
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perror("Unable to open input file");
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goto done;
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}
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_initInfo();
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// Now read in the 35 tracks of data from the DSK file and convert them to NIB
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uint8_t sectorData[256*16];
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for (int track=0; track<35; track++) {
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uint32_t bytesRead = fread(sectorData, 1, 256*16, f);
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if (bytesRead != 256*16) {
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fprintf(stderr, "Failed to read DSK data; got %d bytes, wanted %d\n", bytesRead, 256);
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goto done;
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}
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tracks[track].trackData = (uint8_t *)calloc(NIBTRACKSIZE, 1);
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if (!tracks[track].trackData) {
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fprintf(stderr, "Failed to malloc track data\n");
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goto done;
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}
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tracks[track].startingBlock = STARTBLOCK + 13*track;
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tracks[track].blockCount = 13;
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uint32_t sizeInBits = nibblizeTrack(tracks[track].trackData, sectorData, subtype, track);
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tracks[track].bitCount = sizeInBits; // ... reality.
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}
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retval = true;
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done:
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if (f)
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fclose(f);
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return retval;
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}
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bool Woz::readNibFile(const char *filename)
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{
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FILE *f = fopen(filename, "r");
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if (!f) {
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perror("Unable to open input file");
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return false;
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}
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_initInfo();
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// Now read in the 35 tracks of data from the nib file
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nibSector nibData[16];
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for (int track=0; track<35; track++) {
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uint32_t bytesRead = fread(nibData, 1, NIBTRACKSIZE, f);
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if (bytesRead != NIBTRACKSIZE) {
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printf("Failed to read NIB data; got %d bytes, wanted %d\n", bytesRead, NIBTRACKSIZE);
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return false;
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}
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tracks[track].trackData = (uint8_t *)calloc(NIBTRACKSIZE, 1);
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if (!tracks[track].trackData) {
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printf("Failed to malloc track data\n");
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return false;
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}
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memcpy(tracks[track].trackData, nibData, NIBTRACKSIZE);
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tracks[track].startingBlock = STARTBLOCK + 13*track;
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tracks[track].blockCount = 13;
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tracks[track].bitCount = NIBTRACKSIZE*8;
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}
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fclose(f);
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return true;
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}
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bool Woz::readWozFile(const char *filename)
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{
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FILE *f = fopen(filename, "r");
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if (!f) {
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perror("Unable to open input file");
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return false;
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}
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// Header
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uint32_t h;
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read32(f, &h);
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if (h == 0x325A4F57 || h == 0x315A4F57) {
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printf("WOZ%c disk image\n", (h & 0xFF000000)>>24);
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} else {
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printf("Unknown disk image type; can't continue\n");
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fclose(f);
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return false;
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}
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uint32_t tmp;
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if (!read32(f, &tmp)) {
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printf("Read failure\n");
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fclose(f);
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return false;
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}
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if (tmp != 0x0A0D0AFF) {
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printf("WOZ header failure; exiting\n");
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fclose(f);
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return false;
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}
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uint32_t crc32;
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read32(f, &crc32);
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// printf("Disk crc32 should be 0x%X\n", crc32);
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// FIXME: check CRC. Remember that 0x00 means "don't check CRC"
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uint32_t fpos = 12;
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uint8_t haveData = 0;
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#define cINFO 1
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#define cTMAP 2
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#define cTRKS 4
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while (1) {
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if (fseeko(f, fpos, SEEK_SET)) {
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break;
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}
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uint32_t chunkType;
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if (!read32(f, &chunkType)) {
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break;
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}
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uint32_t chunkDataSize;
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read32(f, &chunkDataSize);
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bool isOk;
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switch (chunkType) {
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case 0x4F464E49: // 'INFO'
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isOk = parseInfoChunk(f, chunkDataSize);
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haveData |= cINFO;
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break;
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case 0x50414D54: // 'TMAP'
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isOk = parseTMAPChunk(f, chunkDataSize);
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haveData |= cTMAP;
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break;
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case 0x534B5254: // 'TRKS'
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isOk = parseTRKSChunk(f, chunkDataSize);
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haveData |= cTRKS;
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break;
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case 0x4154454D: // 'META'
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isOk = parseMetaChunk(f, chunkDataSize);
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break;
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default:
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printf("Unknown chunk type 0x%X\n", chunkType);
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fclose(f);
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return false;
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break;
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}
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if (!isOk) {
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printf("Chunk parsing [0x%X] failed; exiting\n", chunkType);
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fclose(f);
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return false;
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}
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fpos += chunkDataSize + 8; // 8 bytes for the ChunkID and the ChunkSize
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}
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if (haveData != 0x07) {
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printf("ERROR: missing one or more critical sections\n");
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return false;
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}
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for (int i=0; i<35; i++) {
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if (!readQuarterTrackData(f, i*4)) {
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printf("Failed to read QTD for track %d\n", i);
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fclose(f);
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return false;
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}
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}
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fclose(f);
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printf("File read successful\n");
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return true;
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}
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bool Woz::readFile(const char *filename, uint8_t forceType)
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{
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if (forceType == T_AUTO) {
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// Try to determine type from the file extension
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const char *p = strrchr(filename, '.');
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if (!p) {
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printf("Unable to determine file type of '%s'\n", filename);
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return false;
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}
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if (strcasecmp(p, ".woz") == 0) {
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forceType = T_WOZ;
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} else if (strcasecmp(p, ".dsk") == 0 ||
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strcasecmp(p, ".do") == 0) {
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forceType = T_DSK;
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} else if (strcasecmp(p, ".po") == 0) {
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forceType = T_PO;
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} else if (strcasecmp(p, ".nib") == 0) {
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forceType = T_NIB;
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} else {
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printf("Unable to determine file type of '%s'\n", filename);
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return false;
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}
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}
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switch (forceType) {
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case T_WOZ:
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printf("reading woz file %s\n", filename);
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return readWozFile(filename);
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case T_DSK:
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case T_PO:
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printf("reading DSK file %s\n", filename);
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return readDskFile(filename, forceType);
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case T_NIB:
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printf("reading NIB file %s\n", filename);
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return readNibFile(filename);
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default:
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printf("Unknown disk type; unable to read\n");
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return false;
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}
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}
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|
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bool Woz::parseTRKSChunk(FILE *f, uint32_t chunkSize)
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{
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if (di.version == 2) {
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for (int i=0; i<160; i++) {
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if (!read16(f, &tracks[i].startingBlock))
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return false;
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if (!read16(f, &tracks[i].blockCount))
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return false;
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if (!read32(f, &tracks[i].bitCount))
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return false;
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tracks[i].startingByte = 0; // v1-specific
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}
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return true;
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}
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|
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// V1 parsing
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uint32_t ptr = 0;
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uint8_t trackNumber = 0;
|
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while (ptr < chunkSize) {
|
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tracks[trackNumber].startingByte = trackNumber * 6656 + 256;
|
|
tracks[trackNumber].startingBlock = 0; // v2-specific
|
|
tracks[trackNumber].blockCount = 13;
|
|
fseeko(f, (trackNumber * 6656 + 256) + 6648, SEEK_SET);
|
|
uint16_t numBits;
|
|
if (!read16(f, &numBits)) {
|
|
return false;
|
|
}
|
|
tracks[trackNumber].bitCount = numBits;
|
|
ptr += 6656;
|
|
trackNumber++;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Woz::parseTMAPChunk(FILE *f, uint32_t chunkSize)
|
|
{
|
|
if (chunkSize != 0xa0) {
|
|
printf("TMAP chunk is the wrong size; aborting\n");
|
|
return false;
|
|
}
|
|
|
|
for (int i=0; i<40*4; i++) {
|
|
if (!read8(f, (uint8_t *)&quarterTrackMap[i]))
|
|
return false;
|
|
chunkSize--;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// return true if successful
|
|
bool Woz::parseInfoChunk(FILE *f, uint32_t chunkSize)
|
|
{
|
|
if (chunkSize != 60) {
|
|
printf("INFO chunk size is not 60; aborting\n");
|
|
return false;
|
|
}
|
|
|
|
if (!read8(f, &di.version))
|
|
return false;
|
|
if (di.version > 2) {
|
|
printf("Incorrect version header; aborting\n");
|
|
return false;
|
|
}
|
|
|
|
if (!read8(f, &di.diskType))
|
|
return false;
|
|
if (di.diskType != 1) {
|
|
printf("Not a 5.25\" disk image; aborting\n");
|
|
return false;
|
|
}
|
|
|
|
if (!read8(f, &di.writeProtected))
|
|
return false;
|
|
|
|
if (!read8(f, &di.synchronized))
|
|
return false;
|
|
|
|
if (!read8(f, &di.cleaned))
|
|
return false;
|
|
|
|
di.creator[32] = 0;
|
|
for (int i=0; i<32; i++) {
|
|
if (!read8(f, (uint8_t *)&di.creator[i]))
|
|
return false;
|
|
}
|
|
|
|
if (di.version >= 2) {
|
|
if (!read8(f, &di.diskSides))
|
|
return false;
|
|
if (!read8(f, &di.bootSectorFormat))
|
|
return false;
|
|
if (!read8(f, &di.optimalBitTiming))
|
|
return false;
|
|
if (!read16(f, &di.compatHardware))
|
|
return false;
|
|
if (!read16(f, &di.requiredRam))
|
|
return false;
|
|
if (!read16(f, &di.largestTrack))
|
|
return false;
|
|
} else {
|
|
di.diskSides = 0;
|
|
di.bootSectorFormat = 0;
|
|
di.compatHardware = 0;
|
|
di.requiredRam = 0;
|
|
di.largestTrack = 13; // 13 * 512 bytes = 6656. All tracks are
|
|
// padded to 6646 bytes in the v1 image.
|
|
di.optimalBitTiming = 32; // "standard" disk bit timing for a 5.25" disk (4us per bit)
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Woz::parseMetaChunk(FILE *f, uint32_t chunkSize)
|
|
{
|
|
metaData = (char *)calloc(chunkSize+1, 1);
|
|
if (!metaData)
|
|
return false;
|
|
|
|
if (fread(metaData, 1, chunkSize, f) != chunkSize)
|
|
return false;
|
|
|
|
metaData[chunkSize] = 0;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Woz::readQuarterTrackData(FILE *f, uint8_t quartertrack)
|
|
{
|
|
uint8_t targetImageTrack = quarterTrackMap[quartertrack];
|
|
if (targetImageTrack == 0xFF) {
|
|
// It's a tween-track with no reliable data.
|
|
return true;
|
|
}
|
|
|
|
uint16_t bitsStartBlock = tracks[targetImageTrack].startingBlock;
|
|
|
|
// if (tracks[targetImageTrack].trackData)
|
|
// free(tracks[targetImageTrack].trackData);
|
|
|
|
// Allocate a new buffer for this track
|
|
uint32_t count = tracks[targetImageTrack].blockCount * 512;
|
|
if (di.version == 1) count = (tracks[targetImageTrack].bitCount / 8) + ((tracks[targetImageTrack].bitCount % 8) ? 1 : 0);
|
|
tracks[targetImageTrack].trackData = (uint8_t *)calloc(count, 1);
|
|
if (!tracks[targetImageTrack].trackData) {
|
|
perror("Failed to alloc buf to read track magnetic data");
|
|
return false;
|
|
}
|
|
|
|
if (di.version == 1) {
|
|
if (fseeko(f, tracks[targetImageTrack].startingByte, SEEK_SET)) {
|
|
perror("Failed to seek to start of block");
|
|
return false;
|
|
}
|
|
} else {
|
|
if (fseeko(f, bitsStartBlock*512, SEEK_SET)) {
|
|
perror("Failed to seek to start of block");
|
|
return false;
|
|
}
|
|
}
|
|
uint32_t didRead = fread(tracks[targetImageTrack].trackData, 1, count, f);
|
|
if (didRead != count) {
|
|
printf("Failed to read all track data for track [read %d, wanted %d]\n", didRead, count);
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool Woz::readSectorData(uint8_t track, uint8_t sector, nibSector *sectorData)
|
|
{
|
|
// Find the sector header for this sector...
|
|
uint32_t ptr = 0;
|
|
|
|
memset(sectorData->gap1, 0xFF, sizeof(sectorData->gap1));
|
|
memset(sectorData->gap2, 0xFF, sizeof(sectorData->gap1));
|
|
|
|
// Allow two loops through the track data looking for the sector prolog
|
|
uint32_t endCount = tracks[track].blockCount*512*2;
|
|
if (di.version == 1) endCount = 2*6646;
|
|
while (ptr < endCount) {
|
|
sectorData->sectorProlog[0] = sectorData->sectorProlog[1];
|
|
sectorData->sectorProlog[1] = sectorData->sectorProlog[2];
|
|
sectorData->sectorProlog[2] = nextDiskByte(track);
|
|
ptr++;
|
|
|
|
if (sectorData->sectorProlog[0] == 0xd5 &&
|
|
sectorData->sectorProlog[1] == 0xaa &&
|
|
sectorData->sectorProlog[2] == 0x96) {
|
|
// Found *a* sector header. See if it's ours.
|
|
sectorData->volume44[0] = nextDiskByte(track);
|
|
sectorData->volume44[1] = nextDiskByte(track);
|
|
sectorData->track44[0] = nextDiskByte(track);
|
|
sectorData->track44[1] = nextDiskByte(track);
|
|
sectorData->sector44[0] = nextDiskByte(track);
|
|
sectorData->sector44[1] = nextDiskByte(track);
|
|
sectorData->checksum44[0] = nextDiskByte(track);
|
|
sectorData->checksum44[1] = nextDiskByte(track);
|
|
sectorData->sectorEpilog[0] = nextDiskByte(track);
|
|
sectorData->sectorEpilog[1] = nextDiskByte(track);
|
|
sectorData->sectorEpilog[2] = nextDiskByte(track);
|
|
|
|
if (sectorData->sectorEpilog[0] == 0xde &&
|
|
sectorData->sectorEpilog[1] == 0xaa &&
|
|
sectorData->sectorEpilog[2] == 0xeb) {
|
|
// Header is integral. See if it's our sector:
|
|
uint8_t sectorNum = de44(sectorData->sector44);
|
|
if (sectorNum != sector) {
|
|
continue;
|
|
}
|
|
// It's our sector - find the data chunk and read it
|
|
while (ptr < tracks[track].blockCount*512*2) {
|
|
sectorData->dataProlog[0] = sectorData->dataProlog[1];
|
|
sectorData->dataProlog[1] = sectorData->dataProlog[2];
|
|
sectorData->dataProlog[2] = nextDiskByte(track);
|
|
ptr++;
|
|
|
|
if (sectorData->dataProlog[0] == 0xd5 &&
|
|
sectorData->dataProlog[1] == 0xaa &&
|
|
sectorData->dataProlog[2] == 0xad) {
|
|
// Found the data; copy it in
|
|
for (int i=0; i<342; i++) {
|
|
sectorData->data62[i] = nextDiskByte(track);
|
|
}
|
|
sectorData->checksum = nextDiskByte(track);
|
|
sectorData->dataEpilog[0] = nextDiskByte(track);
|
|
sectorData->dataEpilog[1] = nextDiskByte(track);
|
|
sectorData->dataEpilog[2] = nextDiskByte(track);
|
|
if (sectorData->dataEpilog[0] != 0xde ||
|
|
sectorData->dataEpilog[1] != 0xaa ||
|
|
sectorData->dataEpilog[2] != 0xeb) {
|
|
continue;
|
|
}
|
|
// Have an integral hunk of data, with epilog - return it
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
bool Woz::writeInfoChunk(uint8_t version, FILE *f)
|
|
{
|
|
if (!write8(f, version) ||
|
|
!write8(f, di.diskType) ||
|
|
!write8(f, di.writeProtected) ||
|
|
!write8(f, di.synchronized) ||
|
|
!write8(f, di.cleaned))
|
|
return false;
|
|
|
|
for (int i=0; i<32; i++) {
|
|
if (!write8(f, di.creator[i]))
|
|
return false;
|
|
}
|
|
|
|
if (version >= 2) {
|
|
// If we read a Wozv1, this will be set to 0. Set it to 1.
|
|
if (di.diskSides == 0)
|
|
di.diskSides = 1;
|
|
|
|
if ( !write8(f, di.diskSides) ||
|
|
!write8(f, di.bootSectorFormat) ||
|
|
!write8(f, di.optimalBitTiming) ||
|
|
!write16(f, di.compatHardware) ||
|
|
!write16(f, di.requiredRam) ||
|
|
!write16(f, di.largestTrack))
|
|
return false;
|
|
}
|
|
|
|
// Padding
|
|
for (int i=0; i<((version==1)?23:14); i++) {
|
|
if (!write8(f, 0))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool Woz::writeTMAPChunk(uint8_t version, FILE *f)
|
|
{
|
|
for (int i=0; i<40*4; i++) {
|
|
if (!write8(f, quarterTrackMap[i]))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Woz::writeTRKSChunk(uint8_t version, FILE *f)
|
|
{
|
|
if (version == 1) {
|
|
printf("V1 write is not implemented\n");
|
|
return false;
|
|
}
|
|
|
|
// Reconstruct all of the starting blocks/blockCounts for each
|
|
// track. The bitCount should be correct.
|
|
uint8_t numTracksPacked = 0;
|
|
for (int i=0; i<160; i++) {
|
|
if (tracks[i].trackData) {
|
|
// For any tracks that have data, put it somewhere in the destination file
|
|
tracks[i].startingBlock = STARTBLOCK + 13*(numTracksPacked++);
|
|
// assume tracks[track].bitCount is correct, and recalculate the block size of this track
|
|
uint32_t bytes = (tracks[i].bitCount / 8) + ((tracks[i].bitCount % 8) ? 1 : 0);
|
|
uint32_t blocks = (bytes / 512) + ((bytes % 512) ? 1 : 0);
|
|
tracks[i].blockCount = blocks;
|
|
} else {
|
|
tracks[i].startingBlock = 0;
|
|
tracks[i].blockCount = 0;
|
|
tracks[i].bitCount = 0;
|
|
}
|
|
|
|
if (!write16(f, tracks[i].startingBlock))
|
|
return false;
|
|
if (!write16(f, tracks[i].blockCount))
|
|
return false;
|
|
if (!write32(f, tracks[i].bitCount))
|
|
return false;
|
|
}
|
|
|
|
// All the track data
|
|
for (int i=0; i<160; i++) {
|
|
if (tracks[i].startingBlock &&
|
|
tracks[i].blockCount) {
|
|
fseeko(f, tracks[i].startingBlock * 512, SEEK_SET);
|
|
uint32_t writeSize = (tracks[i].bitCount / 8) + ((tracks[i].bitCount % 8) ? 1 : 0);
|
|
if (fwrite(tracks[i].trackData, 1, writeSize, f) != writeSize)
|
|
return false;
|
|
uint8_t c = 0;
|
|
while (writeSize < tracks[i].blockCount * 512) {
|
|
if (fwrite(&c, 1, 1, f) != 1)
|
|
return false;
|
|
writeSize++;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool Woz::decodeWozTrackToNib(uint8_t track, nibSector sectorData[16])
|
|
{
|
|
for (int sector=0; sector<16; sector++) {
|
|
if (!readSectorData(track, sector, (nibSector *)(§orData[sector]))) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool Woz::decodeWozTrackToDsk(uint8_t track, uint8_t subtype, uint8_t sectorData[256*16])
|
|
{
|
|
// First read it to a NIB; then convert the NIB to a DSK.
|
|
nibSector nibData[16];
|
|
if (!decodeWozTrackToNib(track, nibData))
|
|
return false;
|
|
|
|
if (denibblizeTrack((const uint8_t *)nibData, sectorData, subtype, track) != errorNone)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
void Woz::dumpInfo()
|
|
{
|
|
printf("WOZ image version %d\n", di.version);
|
|
printf("Disk type: %s\n", di.diskType == 1 ? "5.25\"" : "3.5\"");
|
|
printf("Write protected: %s\n", di.writeProtected ? "yes" : "no");
|
|
printf("Synchronized: %s\n", di.synchronized ? "yes" : "no");
|
|
printf("Cleaned: %s\n", di.cleaned ? "yes" : "no");
|
|
printf("Creator: %s\n", di.creator);
|
|
printf("Disk sides: %d\n", di.diskSides);
|
|
printf("Boot sector format: ");
|
|
switch (di.bootSectorFormat) {
|
|
case 0:
|
|
default:
|
|
printf("unknown\n");
|
|
break;
|
|
case 1:
|
|
printf("16 sector\n");
|
|
break;
|
|
case 2:
|
|
printf("13 sector\n");
|
|
break;
|
|
case 3:
|
|
printf("Both 16 and 13 sector\n");
|
|
break;
|
|
}
|
|
printf("Optimal bit timing: %d ns\n", di.optimalBitTiming * 125);
|
|
printf("Hardware compatability flags: 0x%X\n", di.compatHardware);
|
|
printf("Required RAM: %d K\n", di.requiredRam);
|
|
printf("Largest track: %d bytes\n", di.largestTrack * 512);
|
|
printf("\n");
|
|
|
|
if (metaData) {
|
|
printf("Metadata:\n");
|
|
|
|
char *token, *string, *tofree;
|
|
tofree = string = strdup(metaData);
|
|
char *parts[25];
|
|
memset(parts, 0, sizeof(parts));
|
|
int idx = 0;
|
|
while ((token = strsep(&string, "\n")) != NULL) {
|
|
if (idx >= sizeof(parts)) {
|
|
printf("ERROR: too many metadata keys\n");
|
|
return;
|
|
}
|
|
parts[idx++] = strdup(token);
|
|
}
|
|
free(tofree);
|
|
|
|
for (int idx2=0; idx2<idx; idx2++) {
|
|
if (parts[idx2] && strlen(parts[idx2])) {
|
|
char *p = strchr(parts[idx2], '\t');
|
|
if (!p) {
|
|
printf("ERROR: no delineator on a line of metadata [%s]\n", parts[idx2]);
|
|
return;
|
|
}
|
|
*(p++) = 0;
|
|
if (strlen(p)) {
|
|
printf(" %s: %s\n", parts[idx2], p);
|
|
}
|
|
}
|
|
}
|
|
|
|
while (--idx >= 0) {
|
|
free(parts[idx]);
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
printf("Quarter-track map:\n");
|
|
for (int i=0; i<140; i+=4) {
|
|
printf("%2d %3d => %3d %3d => %3d %3d => %3d %3d => %3d\n",
|
|
i/4,
|
|
i, quarterTrackMap[i],
|
|
i+1, quarterTrackMap[i+1],
|
|
i+2, quarterTrackMap[i+2],
|
|
i+3, quarterTrackMap[i+3]);
|
|
}
|
|
|
|
for (int i=0; i<40; i++) {
|
|
printf("Track %d:\n", i);
|
|
if (di.version == 1) {
|
|
printf(" Starts at byte %d\n", tracks[i].startingByte);
|
|
} else {
|
|
printf(" Starts at block %d\n", tracks[i].startingBlock);
|
|
}
|
|
printf(" Number of blocks: %d\n", tracks[i].blockCount);
|
|
printf(" Number of bits: %d\n", tracks[i].bitCount);
|
|
if (tracks[i].bitCount && tracks[i].trackData) {
|
|
#if 1
|
|
// Raw track dump
|
|
printf(" Raw track data:\n");
|
|
for (int k=0; k<(tracks[i].bitCount/8)+((tracks[i].bitCount%8)?1:0); k+=16) {
|
|
printf(" 0x%.4X :", k);
|
|
for (int j=0; j<16; j++) {
|
|
if (k+j < (tracks[i].bitCount/8)+((tracks[i].bitCount%8)?1:0)) {
|
|
printf(" %.2X", tracks[i].trackData[k+j]);
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
|
|
#else
|
|
// Sector parsing & dump
|
|
#if 1
|
|
// Look at the sectors in numerical order
|
|
// FIXME: 13-sector support
|
|
nibSector sectorData;
|
|
for (int sector=0; sector<16; sector++) {
|
|
if (readSectorData(i, sector, §orData)) {
|
|
printf(" Volume ID: %d\n", de44(sectorData.volume44));
|
|
printf(" Track ID: %d\n", de44(sectorData.track44));
|
|
uint8_t sector = de44(sectorData.sector44);
|
|
printf(" Sector: %d\n", sector);
|
|
printf(" Cksum: %d\n", de44(sectorData.checksum44));
|
|
|
|
printf(" Sector Data:\n");
|
|
for (int k=0; k<342; k+=16) {
|
|
printf(" 0x%.4X :", k);
|
|
for (int j=0; j<16; j++) {
|
|
if (k+j < 342) {
|
|
printf(" %.2X", sectorData.data62[k+j]);
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
}
|
|
#else
|
|
// Look at the sectors found in order on the track
|
|
trackBitIdx = 0x80; trackPointer = 0; trackLoopCounter = 0;
|
|
uint16_t sectorsFound = 0;
|
|
do {
|
|
if (nextDiskByte(i) == 0xD5 &&
|
|
nextDiskByte(i) == 0xAA &&
|
|
nextDiskByte(i) == 0x96) {
|
|
printf(" Volume ID: %d\n", denib(nextDiskByte(i), nextDiskByte(i)));
|
|
printf(" Track ID: %d\n", denib(nextDiskByte(i), nextDiskByte(i)));
|
|
uint8_t sector = denib(nextDiskByte(i), nextDiskByte(i));
|
|
printf(" Sector: %d\n", sector);
|
|
sectorsFound |= (1 << sector);
|
|
printf(" Cksum: %d\n", denib(nextDiskByte(i), nextDiskByte(i)));
|
|
|
|
nextDiskByte(i); // skip epilog
|
|
nextDiskByte(i);
|
|
nextDiskByte(i);
|
|
// look for data prolog d5 aa ad
|
|
while (nextDiskByte(i) != 0xD5 && trackLoopCounter < 2)
|
|
;
|
|
if (trackLoopCounter < 2) {
|
|
// Hope that's it and skip two bytes
|
|
nextDiskByte(i);
|
|
nextDiskByte(i);
|
|
// Dump the 6-and-2 data
|
|
printf(" Sector Data:\n");
|
|
for (int k=0; k<342; k+=16) {
|
|
printf(" 0x%.4X :", k);
|
|
for (int j=0; j<16; j++) {
|
|
if (k+j < 342) {
|
|
printf(" %.2X", nextDiskByte(i));
|
|
}
|
|
}
|
|
printf("\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
} while (sectorsFound != 0xFFFF && trackLoopCounter < 2);
|
|
#endif
|
|
#endif
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Woz::isSynchronized()
|
|
{
|
|
return di.synchronized;
|
|
}
|
|
|
|
uint8_t Woz::trackNumberForQuarterTrack(uint16_t qt)
|
|
{
|
|
return quarterTrackMap[qt];
|
|
}
|
|
|
|
|