GE CT-9800

GE MEDICAL SYSTEMS CT9800 QUICK SYSTEM
Rev. 14 Direction 18000
4-3-66
INTERFACE ERROR WORD C contains error status set by the ODC driver routine to indicate error conditions
detected while executing the SCSI command. All bits = 0 indicates no errors
detected. Bit 15 = Target not found. Bit 14 = Loss of busy. Bit 13 = Illegal
restore pointers message attempted by drive. Bit 12 = Illegal phase
(combination of SCSI phase signals). Bit 11 = Programmed I/O parity error.
Bit 10 = Buffer overflow. Bit 9 = DMA parity error. Bit 8 = Unknown 5380
interrupt. Bit 7 = Status Byte Buffer invalid. Bit 6 = Driver aborted. Bit 5 =
initiate Message out Error. Bit 4 = Target rejected Message. Bits 3 thru 0 =
unused.
INTERFACE STATUS WORD F contains general status of the SCSI command. The bits are defined as: Bit
15 = SCSI Command Active. Bit 14 = DMA Transfer Active. Bit 13 = SCSI
Command Complete. Bit 12 = Drive currently disconnected from ODC. Bit
11 = Command pending execution. Bit 10 = Arbitration lost. ODC could not
access the SCSI bus. Bit 9 = Abort command ODC issued an about
command to the drive (normal condition). Bit 8 = Message out command;
ODC is sending message to drive. Bit 7 = ODC is trowing away data being
read (normal condition). Bit 6 = Command has been terminated with an error
condition (See interface Error Word).
SENSE DATA BYTES WORDS 10 thru 17 contain data returned by the drive after receiving a Request sense
command from the ODC. A Request Sense command is issued if the drive returns a
status of 02 Hex “Check Condition”. Data sense is valid if the first byte is 70 or F0 Hex.