Mylex MAE486, Руководство пользователя, Страница: 48 / 71

Appendix B, Bank and bit locations
Memory organization
The MAE486 and MBE486 system boards
board memory is divided into two SIMM memory
banks. Each bank consists of four SIMM sockets.
l
MAE486
possible memory configurations
include or 16 Megabytes (for single-bank
operation) or or 32 Megabytes (for
bank operation).
l
MBE486
possible memory configurations
include or 32 Megabytes.
The memory bank numbers for each bank are
shown above each row of SIMM modules. The
component number and the bit numbers for each
SIMM module are also shown.
Diagnostic information
If a diagnostic test shows a memory error, the
problem may be isolated to a particular SIMM
module if the test pinpoints the exact location of
the error, including bit number.
When you test the system DRAM memory
repetitively, you must disable the cache
memory to avoid confusion between the
actual memory locations and locations
mapped into the cache. If a memory loca-
tion with an intermittent error is read
with the cache enabled, for example, ad-
ditional testing of the suspect location will
be read from cache. The “successful” test
Installation and Operation Guide
B-l