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DX-9200 MEMORY SETTINGS
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THE CACHE MEMORY
SOME CACHE
MEMORY CONSIDERATIONS
CACHE MEMORY CONFIGURATIONS
CACHE MEMORY JUMPER CONFIGURATIONS
THE MEMORY
SOME MEMORY
CONSIDERATIONS
POSSIBLE MEMORY
CONFIGURATIONS
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The Cache Memory
This system board can support an optional 64KB,
128KB, 256KB, 512KB or 1MB external write back, direct-mapped cache.
Some Cache Memory
Considerations:
 Since
single bank cache installations (B, D, F) prevent the cache sub-system
from using interleaving access, the "Auto Configuration" in the
Advanced Chipset Setup must be disabled and the "Cache Read Wait State"
must also be set to "3-2-2-2" to ensure proper operation.
Cache Memory Configurations
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=================================================
TYPE TOTAL CACHE BANK 0 BANK 1 TAG RAM PIECES
(U33-36) (U25-28) (U32)
-------------------------------------------------
A 64K 8K x 8 8K x 8 8K X 8 9
B 128K 32K x 8 8K X 8 5
C 256K 32K x 8 32K x 8 32K X 8 9
D 256K 64K x 8 32K X 8 5
E 512K 64K x 8 64K x 8 32K X 8 9
F 512K 128K x 8 32K X 8 5
G 1024K 128K x 8 128K X 8 64K X 8 9
=================================================
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| Cache
Memory Jumper Configurations |
====================================================
TYPE CACHE JUMPER JP9 JP10 JP11 JP12 JP13
----------------------------------------------------
A 64K OPEN OPEN OPEN OPEN OPEN
----------------------------------------------------
B 128K 1 - 2, 3 - 4 OPEN OPEN OPEN SHORT
----------------------------------------------------
C 256K 2 - 3, 4 - 5 OPEN OPEN SHORT SHORT
----------------------------------------------------
D 256K 1 - 2, 3 - 4, 5 - 6 OPEN OPEN SHORT SHORT
----------------------------------------------------
E 512K 2 - 3, 4 - 5, 6 - 7 OPEN SHORT SHORT SHORT
----------------------------------------------------
F 512K 1 - 2, 3 - 4, 5 - 6, 7 - 8 OPEN SHORT SHORT SHORT
----------------------------------------------------
G 1024K 2 - 3, 4 - 5, 6 - 7, 8 - 9 SHORT SHORT SHORT SHORT
====================================================
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The Memory
There are 4 banks of 72 pin SIMM sockets on this
board with each bank of 72 pin SIMM consisting of only one SIMM socket
as denoted as Bank 0, Bank 1, Bank 2 & Bank 3. The system board has
auto-detection circuitry to sense which bank or banks are filled. Any SIMM
module in the configurations listed below with Fast Page Mode, single or
double sided memory can be used.
Some Memory Considerations:
Maximum
memory on-board can not exceed 256 MB in any combination.
The
memory installed in banks 0 & 1 must be more than or equal to the memory
installed in banks 2 & 3.
If
both of the SIMM sockets in any single group (i.e. banks 0 & 1) are
filled then both of the SIMM modules must be of the same type. However,
you do not have to fill up a single group with SIMM modules before starting
on the next. See below for more clarification on these considerations.
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Possible Memory Configurations |
=====================================================
|-------GROUP 1--------| |-------GROUP 2---------|
# BANK 0 BANK 1 BANK 2 BANK 3
-----------------------------------------------------
1 256KB-16MB NONE NONE NONE
2 NONE 256KB-16MB NONE NONE
3 NONE NONE 256KB-16MB NONE
4 NONE NONE NONE 256KB-16MB
5 256KB-16MB 256KB-16MB NONE NONE
6 256KB-16MB NONE 256KB-16MB NONE
7 256KB-16MB NONE NONE 256KB-16MB
8 NONE 256KB-16MB 256KB-16MB NONE
9 NONE 256KB-16MB NONE 256KB-16MB
10 NONE NONE 256KB-16MB 256KB-16MB
11 256KB-16MB 256KB-16MB 256KB-16MB NONE
12 NONE 256KB-16MB 256KB-16MB 256KB-16MB
13 256KB-16MB 256KB-16MB NONE 256KB-16MB
14 256KB-16MB NONE 256KB-16MB 256KB-16MB
15 256KB-16MB 256KB-16MB 256KB-16MB 256KB-16MB
=====================================================
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