Info DriveController (zeer beknopt) Onbekend, 00-00-00 Info DriveController (zeer beknopt) 7FF8 - READ: STATUSREGISTER WRIT: COMMAND-REGISTER 7FF9 - TRACK REGISTER (AANGEVEN WELKE TRACK/ READ/WRITE) 7FFA - TRACK SECTOR REGISTER (AANGEVEN WELKE SECTOR/ READ/WRITE) 7FFB - DATA I/O "POORT" 7FFC - BIT 0 : SIDE (HEAD-CHOICE) 7FFD - DRIVE SELECT, MOTOR ON/OFF 128=DRIVE A AAN 129=DRIVE B AAN &H7F=ALLE DRIV.UIT (ALLEEN DIE VAN DEZE CONTROLLER!) 7FF8 / READ : BIT 7 NOT READY 6 WRITE PROTECT 5 HEADER LOADED 4 SEEK ERROR 3 CRC ERROR 2 TRACK 0 SIGNAL 1 INDEX PULSE 0 BUSY 7FF8 / WRITE : HIGH NIBBLE 1 = SEEK (IO=TRACK) 2 = STEP (LAST DIRECTION) 3 = 4 = STEP IN 5 = 6 = STEP OUT 7 = 8 = READ SECTOR (MUST BE FORMATTED) 9 = A = WRITE SECTOR (MUST BE FORMATTED) B = C = READ ADDRESS D = FORCE INTERRUPT E = READ TRACK F = WRITE TRACK LOW NIBBLE : SPEED OF READING/WRITING |