Emulex MD21/S2, Technical Manual

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Online Diagnostic Commands
As each individual test is performed during the MD21 Controller
burn-in mode, a test code is output to the burn-in connector to
indicate which component on the MD21 Controller is currently being
tested. If an individual test fails, the corresponding test code
is output. The individual tests in the self-test procedure and
their corresponding hexadecimal codes are listed in Table 6-2.
To establish the MD21 Controller burn-in mode, ground pin J5-5.
Once the burn-in mode has been established, to cause the MD21
Controller to perform its self-test procedure continuously, ground
pin J4-8 and reset the MD21 Controller.
Table 6-3. MD21 Controller Test Code Descriptions
Test Code *
(hexadecimal)
Test Description
00 Power-up Start Code
01 Buffer Controller Reset Status Test
02
Disk Formatter Reset Status Test
04
SCSI Reset Latch Test
40
8031 Microprocessor Self-Test
41
ROM Checksum Test
42
Buffer Controller LSI Register Test
43
External RAM Data Test
44 External RAM Parity Test
45
Buffer Controller LSI Parity Detection Test
46
Buffer Controller LSI Parity Interrupt Test
80
Disk Formatter LSI Register Test
81 Disk Formatter LSI Interrupt Test
83 SCSI Controller LSI Self-Diagnostic Test
84 SCSI Controller LSI Interrupt Test
85 SCSI Controller LSI Register Test
* Asserted bits are low true.
6-8 Controller Initialization and Self-Test Procedures