Pioneer SCSI-2 2.29Read Diagnostic Results (1Ch), ROM Diagnostic, RAM Diagnostic, Parameter Length, Interface Diagnostic, Data Buffer Diagnostic, Operation code is (1Ch)

Read Diagnostic Results

2.29Read Diagnostic Results (1Ch)

Operation code is (1Ch).

This command requests the drive to return the results of the power-on self test.

The Diagnostic Results data consists of 8-byte parameters as shown in Table 2-28B on the opposite page.

Parameter Length

The number of bytes of the RECEIVE DIAGNOSTIC parameter excluding itself. This is fixed to 06h.

ROM Diagnostic

Bit 0 = 1, failure of the SCSI controller ROM.

Bit 1 = 1, failure of the drive controller ROM.

RAM Diagnostic

Bit 0 = 1, failure of the SCSI controller RAM.

Bit 1 = 1, failure of the drive controller RAM.

Data Buffer Diagnostic

Bit 0 = 1, failure of the SCSI controller data buffer.

Bit 1 = 1, failure of the drive controller data buffer.

Bit 2 = 1, failure of the ECC RAM in the drive controller.

Interface Diagnostic

Bit 0 = 1, interface failure between the SCSI controller and the drive controller. Bit 1 = 1, interface failure between the drive controller and the mechanism.

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