FDC_READ
track = FDC_READ( FDCREG_TRACK);
track = FDC_READ( FDCREG_TRACK);
!(read_track && FDC_READ(FDCREG_SECTOR) > SUDT->spt)) {
SelectedDrive, FDC_READ (FDCREG_SECTOR), ReqSide, ReqTrack );
SelectedDrive, ReqSide, ReqTrack, FDC_READ (FDCREG_SECTOR) );
SelectedDrive, ReqSide, ReqTrack, FDC_READ (FDCREG_SECTOR) );
track = FDC_READ( FDCREG_TRACK);
status = FDC_READ( FDCREG_STATUS );
status = FDC_READ( FDCREG_STATUS );
status = FDC_READ( FDCREG_STATUS );
if (FDC_READ( FDCREG_STATUS ) & FDCSTAT_BUSY) {
FDC_READ( FDCREG_STATUS );
status = FDC_READ( FDCREG_STATUS );
stat = !!(FDC_READ( FDCREG_STATUS ) & FDCSTAT_WPROT);
status = FDC_READ( FDCREG_STATUS );