Compaq 486 Maintenance And Service Manual page 22

unexpected
101 - 95 Coprocessor and processor
board conflict
101 - 96 Refer to Authorized Compaq
Dealer Service Bulletin No. 84.
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Error
Code Description
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102 - 01 Coprocessor initial status
word incorrect
102 - 02 Coprocessor initial control
word incorrect
102 - 03 Coprocessor
tag word not all ones
102 - 04 Coprocessor tag
word not all zeros
102 - 05 Coprocessor exchange
command failed
102 - 06 Coprocessor masked
exception incorrectly handled
102 - 07 Coprocessor unmasked
exception incorrectly handled
102 - 08 Coprocessor wrong mask
bit set in status register
102 - 09 Coprocessor unable to
store real number
102 - 10 Coprocessor real number
calculation test failed
102 - 11 Coprocessor speed test
failed
102 - 12 Coprocessor pattern test failed
102 - 14 Switch indicates no numeric
coprocessor present
102 - 15 Coprocessor is inoperative
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Error
Code Description
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103 - 01 DMA page registers test
failed
103 - 02 DMA byte controller test
failed
Recommended
Action
The following steps apply
to error codes 102 - xx:
1. Run COMPAQ EISA
Configuration utility.
2. Replace the processor
board and retest.
Recommended
Action
Replace the processor
board and retest for
error codes 103 - xx
through 114 - xx.