User`s manual

Disk Status Codes

F-3

Controller-Independent Status Codes

The definitions for the controller-independent errors are defined in

Table F-1, shown below.

SCSI Firmware Status Codes

The SCSI firmware returns codes for the SCSI Bus status and the

SCSI I/O Processor (NCR53C810, NCR53C825, or NCR53C875)

status. Table F-2 lists the codes and a description of each.

The debugger returns a single word (16 bits) for an error code. The

upper byte is Controller-Independent, and is assigned by the

debugger. The lower byte is Controller-Dependent. It is formed by

selecting one of two bytes of error information returned by the

firmware, either the SIOP) Status or the SCSI Bus Status.

Table F-1. Controller-Independent Status Codes

Code Description

$00 No error detected

$01 Invalid controller type

$02 Controller descriptor not found

$03 Device descriptor not found

$04 Controller already attached

$05 Descriptor table not found

$06 Invalid command packet

$07 Invalid address for transfer

$08 Block conversion error

$09 Invalid parameter in conÞguration

$0A Transfer data count mismatch error

$0B Invalid status received in command packet

$0C Command aborted via break