Service manual

2-14 AlphaServer 4000/4100 Service Manual
Table 2-4 Memory Tests
Test Test Name Logic Tested Description
20 Memory
Data test
Data path to and from
memory
Data path on memory and
RAMs
01 – FF Errors are reported
as an 8-bit binary field. A set
bit indicates a module failure.
Bit <0> indicates pass/fail of
MEM0_L; <1> indicates
pass/fail of MEM0_H; <2>
indicates pass/fail of
MEM1_L; <7> indicates
pass/fail of MEM3_H.
21 Memory
Address test
Address path to and from
memory
Address path on memory
and RAMs
Same as test 20.
23* Memory
Bitmap
Building
No new logic Maps out bad memory by
way of the bitmap. It does not
completely fail memory.
24 Memory
March test
No new logic Maps out bad memory.
* There is no test 22.