Esempio n. 1
0
 private void startReadTrack() {
   setExecutionMode();
   clearRegs012();
   this.sectorIdCyl = this.args[2];
   this.sectorIdHead = this.args[3];
   this.sectorIdRec = 1;
   this.sectorIdSizeCode = this.args[5];
   this.curSectorReader = null;
   this.curSectorIdx = 0;
   this.tcEnabled = true;
   boolean done = false;
   FloppyDiskDrive drive = getArgDrive();
   if (drive != null) {
     if (drive.isReady()) {
       this.dataLen = getArgDataLen();
       this.executingDrive = drive;
       startIOTask(
           IOTaskCmd.READ_SECTOR_BY_INDEX,
           Math.max(this.tStatesPerRotation - this.tStateRotationCounter, 0));
       done = true;
     }
   }
   if (!done) {
     this.statusReg0 |= ST0_ABNORMAL_TERMINATION;
     this.statusReg0 |= ST0_EQUIPMENT_CHECK;
     this.statusReg0 |= ST0_NOT_READY;
     this.statusReg0 |= (this.args[1] & HEAD_DRIVE_MASK);
     stopExecution();
   }
 }
Esempio n. 2
0
 private int getSectorIndexByCurHeadPos(FloppyDiskDrive drive) {
   int idx = -1;
   if (drive != null) {
     AbstractFloppyDisk disk = drive.getDisk();
     if (disk != null) {
       int head = getArgHead();
       int cyl = drive.getCylinder();
       int spc = disk.getSectorsOfCylinder(cyl, head);
       int tpr = this.tStatesPerRotation;
       if ((spc > 0) && (tpr > 0) && (head < disk.getSides()) && (cyl < disk.getCylinders())) {
         idx = Math.round((float) this.tStateRotationCounter / (float) tpr * (float) spc);
         if (idx >= spc) {
           idx = spc - 1;
         }
       }
       if (idx < 0) {
         idx = 0;
       }
     }
   }
   return idx;
 }
Esempio n. 3
0
 private void startIOReqTimer() {
   this.tStatesTillIOReq = Math.min(this.tStatesPerMilli / 100, 1);
 }