AT&T 3B2 Off-Line Diagnostic Manual page 235
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Also See for 3B2:
- Maintenance reference manual (422 pages) ,
- Operation manual (415 pages) ,
- Manual (54 pages)
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- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Phase Descriptions
Test Number:
2
Function:
This test ensures that the VCACHE card correctly responds to full word
hit/miss write accesses.
Procedure:
In virtual mode, write pattern to memory with the VCACHE card enabled, thus
loading the VCACHE card. Disable the VCACHE card and change the pattern
in memory. Enable the VCACHE card and perform a read. The pattern in the
VCACHE card (the first pattern) should be pattern read.
Hardware Tested:
The MPB VCACHE card is tested.
Data Returned:
The failing test number, the failing address, the expected pattern, and the
pattern are returned.
Notes:
None
Test Number:
3
Function:
This test ensures that the VCACHE card correctly responds to byte miss write
accesses.
Procedure:
In virtual mode, write pattern to memory with byte accesses and the VCACHE
card enabled. Disable the VCACHE card and change the memory test pattern.
Enable the VCACHE card and verify that the pattern read is the second
pattern.
Hardware Tested:
The MPB VCACHE card is tested.
Data Returned:
The failing test number, the failing address, the expected pattern, and the
pattern are returned.
Notes:
None
Test Number:
4
Function:
This test ensures that the VCACHE card correctly responds to half word miss
write accesses.
Procedure:
In virtual mode, write pattern to memory with half word accesses and the
VCACHE card enabled. Disable the VCACHE card and change the memory
test pattern. Enable the VCACHE card and verify that the pattern read is the
second pattern.
Hardware Tested:
The MPB VCACHE card is tested.
Data Returned:
The failing test number, the failing address, the expected pattern, and the
pattern are returned.
Notes:
None
MULTIPROCESSOR DIAGNOSTICS
4-53
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