Appendix F Failure Codes
The following is a list of failure codes that may be displayed during the
power-up sequence.
Test Number Description
1 EPROM checksum
2 DRAM data/addressing
3 DRAM refresh
4 Random data pattern
5 DRAM execution
6 Bus cycle and software watchdog
7 VIA device
8 DRAM parity
9 Vector table read/write
10 No test
11 Novram checksum, RAM read/write
12 DMAC reg.R/W, INT, memory transfer
13 Write protection mechanism
14 LED segment check
15 ULA non-DMA R/W transfers
16 ULA fly-by DMA R/W transfers
17 ULA flow thru DMA R/W transfers
18 ULA packet Tx and Rx
19 ULA Tx error interrupt
20 ULA Tx nogo interrupt and counter
21 ULA clock fail interrupt
22 ULA supervisor/data flag check
23 ULA Rx/Tx length counters
30 ULA system test reflector
31-47 ULA packet Tx/Rx for Test 30
X870-300351 Issue 1 F-1 Rev.0
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