AT&T 3B2 Off-Line Diagnostic Manual page 571

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Test Numbers: 30 through 37
Function: These tests verify that the MMCS register is functional.
Procedure: Write a valid data pattern to the register, read the register, and compare the
value read with the value that was written.
Hardware Tested: The MMCS register is tested.
Data Returned: The test number that failed, the actual data, and the expected data are returned.
Notes: None
Test Numbers: 38 through 48
Function: These tests verify that the MPCS register is functional.
Procedure: Write a valid data pattern to the register, read the register, and compare the
value read with the value that was written.
Hardware Tested: The MPCS register is tested.
Data Returned: The test number that failed, the actual data, and the expected data are returned.
SMALL COMPUTER SYSTEM INTERFACE DIAGNOSTICS 14-7