NEC VERSA 6000 Series Service Manual page 75

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Beep
Diagnostic
Description
Code
Code
2-1-1
10h-1Fh
First 64K RAM chip or
data line failure on bit x
2-1-2
2-1-3
2-1-4
2-2-1
2-2-2
2-2-3
2-2-4
2-3-1
2-3-2
2-3-3
2-3-4
2-4-1
2-4-2
2-4-3
2-4-4
3-3-1
20h
Slave DMA register test in
progress or failure.
Table 3-3 BIOS Beep Codes
Troubleshooting and Repair
Test Performed
The first 64K of RAM is tested with a
rolling ones test and a pattern test. If
any of the rolling ones tests fail, then
the BIOS reports the specific bit that
failed. To determine the bit number
from the diagnostic code, subtract 10h.
For example, if 12h is displayed at the
diagnostic port, bit 2 failed. Failure
results in a system halt.
Pattern test of channels 1 through 3 of
the slave controller (starting port
address = 02h). Failure results in a
system halt.
3-7

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