private void execIOReadSectorByIndex() {
SectorData sector = null;
FloppyDiskDrive drive = this.executingDrive;
if (drive != null) {
sector = drive.readSectorByIndex(getArgHead(), this.sectorIdRec - 1);
}
drive = getExecutingDrive();
if (drive != null) {
if (sector != null) {
this.curSector = sector;
this.curSectorReader = sector.reader();
this.remainBytes = this.dataLen;
if (this.curCmd == Command.READ_TRACK) {
setByteReadable();
} else {
this.sectorIdCyl = sector.getCylinder();
this.sectorIdHead = sector.getHead();
this.sectorIdRec = sector.getSectorNum();
this.sectorIdSizeCode = sector.getSizeCode();
if (sector.isEmpty()) {
this.statusReg1 |= ST1_MISSING_ADDRESS_MARK;
this.statusReg2 |= ST2_MISSING_DATA_ADDRESS_MARK;
}
stopExecution();
}
} else {
this.statusReg0 |= ST0_ABNORMAL_TERMINATION;
if (this.sectorIdRec == 1) {
this.statusReg1 |= ST1_NO_DATA;
this.statusReg1 |= ST1_MISSING_ADDRESS_MARK;
} else {
this.statusReg1 |= ST1_END_OF_CYLINDER;
}
stopExecution();
}
}
}
