102 lines
3.3 KiB
C++
102 lines
3.3 KiB
C++
#include "vtoc.h"
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#include <QDebug>
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#include <QString>
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#include "sector.h"
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#include "util.h"
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VTOC::VTOC(Sector *data)
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{
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m_data = data;
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}
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TSPair VTOC::firstCatalogSector() {
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// return TSPair(0x11,0x0f); // Force to look at the normal location
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return TSPair(m_data->rawData()[0x01], m_data->rawData()[0x02]);
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}
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quint8 VTOC::dosVersion() {
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return m_data->rawData()[0x03];
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}
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quint8 VTOC::volumeNumber() {
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return m_data->rawData()[0x06];
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}
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quint8 VTOC::maxTSPairs() {
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return m_data->rawData()[0x27];
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}
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quint8 VTOC::lastTrackAllocated() {
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return m_data->rawData()[0x30];
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}
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qint8 VTOC::directionOfAllocation() {
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return m_data->rawData()[0x31];
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}
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quint8 VTOC::tracksPerDisk() {
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return m_data->rawData()[0x34];
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}
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quint8 VTOC::sectorsPerDisk() {
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return m_data->rawData()[0x35];
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}
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qint16 VTOC::bytesPerSector() {
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return makeWord(m_data->rawData()[0x36],
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m_data->rawData()[0x37]);
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}
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bool VTOC::isSectorInUse(TSPair ts) {
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quint8 track = ts.track();
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quint8 sec = ts.sector();
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quint8 baseaddr = (track * 4) + 0x38;
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//quint16 word = (((quint16) m_data->rawData()[baseaddr]) *256) + (quint8) m_data->rawData()[baseaddr+1];
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quint16 word = makeWord(m_data->rawData()[baseaddr+1],
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m_data->rawData()[baseaddr]);
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quint16 bitpos = (quint16) 0x01 << (quint16) sec;
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return !(word & bitpos);
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}
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void VTOC::dump()
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{
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/*
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for (qint8 idx = 0x0f; idx >= 0; idx--) {
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quint8 shift;
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if (idx < 0x08) { shift = idx; } else { shift = idx-0x08; }
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qDebug() << "Idx: " << idx << "Shift: " << (quint8) shift << "Bitpos: " << (quint8) (0x01 << shift);
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}
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*/
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qDebug() << "Dumping VTOC Track " << m_data->track() << "Sector " << m_data->sector() << " ...";
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qDebug() << " Track number of first catalog sector: " << QString::number(firstCatalogSector().track());
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qDebug() << " Sector number of first catalog sector: " << QString::number(firstCatalogSector().sector());
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qDebug() << " Release number of DOS used to INIT disk: " << QString::number(dosVersion());
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qDebug() << " Disk Volume Number: " << QString::number(volumeNumber());
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qDebug() << " Max track/sector pairs that fit in t/s list sector (122=256): " << QString::number(maxTSPairs());
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qDebug() << " Last track where sectors were allocated: " << QString::number(lastTrackAllocated());
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qDebug() << " Direction of track allocations (+/- 1): " << QString::number(directionOfAllocation());
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qDebug() << " Number tracks per disk: " << QString::number(tracksPerDisk());
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qDebug() << " Number sectors per disk: " << QString::number(sectorsPerDisk());
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qDebug() << " Number bytes/sector: " << QString::number(bytesPerSector());
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qDebug() << " Track Usage (.=free, 0-F=used):";
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for (quint8 track = 0; track < m_data->rawData()[0x34];track++)
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{
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qDebug() << " " << QString("Track %1:").arg((int) track,2,10,QChar('0')) << buildUseString(track);
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}
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}
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QString VTOC::buildUseString(quint8 track) {
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QString usestr;
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for (qint8 sec = 0x0f; sec >= 0; sec--)
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{
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usestr.append(isSectorInUse(TSPair(track,sec))?QString::number(sec,16).toUpper():"-");
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}
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return usestr;
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}
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