Service manual

Self-Tests 95
Code Status Definition
1 Status: Success
2 Error: Failure in test_address routine
4 Error: Byte mask failure
8 Error: Data/address test failure
10 Error: No memory was found during sizing
20 Error: Unexpected parity error
40 Error: Memory sizing error
80 Error: Actual memory size does not match CFGTST register
B.10 DZ (test C)
The serial line (DZ) power-up self-test has one longword for general
controller status information, four longwords for line status information,
and two longwords for status information of any keyboard or pointing
device on the system. The format is as follows:
Controller
Status
DZ
0000XXXX 0000XXXX 0000XXXX 0000XXXX KKKKKKKK MMMMMMMM
Line 0
Status
Line 1
Status
Line 2
Status
Line 3
Status
Keyboard Mouse
StatusStatus
0000.XXXX
where XXXX is one of the status or error codes listed in the following table,
KKKKKKKK is the keyboard’s internal self-test status code, and MMMMMMMM
is the mouse or tablet’s internal self-test status code. The keyboard and
mouse are tested only at power-up, so these values will not change when
test C is executed from the console.