UNIDENTIFIED
KMX-16A/-20A/-25A 386SX SYSTEM BOARD
|
Processor |
80386SX |
|
Processor Speed |
16/20/25MHz |
|
Chip Set |
C&T |
|
Max. Onboard DRAM |
16MB |
|
Cache |
32KB (with external cache card) |
|
BIOS |
AMI/C&T |
|
Dimensions |
220mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
80387SX |
|
CONNECTIONS |
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|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J1 |
External Battery |
J13 |
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Turbo switch |
J7 |
Reset switch |
J14 |
|
Turbo LED |
J8 |
CD-10 32KB External Cache Card |
SL1 |
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Power LED & keylock |
J10 |
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|
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USER CONFIGURABLE SETTINGS |
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Function |
Jumper/Switch |
Position |
|
|
|
Factory configured-do not alter |
J2 |
N/A |
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|
Turbo mode enabled |
J9 |
Closed |
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Turbo mode disabled |
J9 |
Open |
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|
Monitor type select color |
J12 |
pins 1 & 2 closed |
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Monitor type select monochrome |
J12 |
pins 2 & 3 closed |
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Cache card enabled |
W1 |
pins 1 & 2 closed |
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|
Cache card disabled |
W1 |
pins 2 & 3 closed |
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DRAM CONFIGURATION |
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|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
512KB |
(2) 256K x 9 |
NONE |
NONE |
NONE |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
NONE |
NONE |
|
2MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 256K x 9 |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
NONE |
NONE |
|
5MB |
(2) 256K x 9 |
(2) 256K x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
8MB |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
(2) 1M x 9 |
|
16MB |
(2) 4M x 9 |
(2) 4M x 9 |
NONE |
NONE |
|
CACHE CONFIGURATION |
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|
Size |
Bank 0 |
Bank 1 |
|
32KB(Two Way Set) |
(4) 8KB x 8 |
NONE |
|
32KB(Direct Map) |
(4) 8KB x 8 |
NONE |
|
32KB(Direct Map) |
NONE |
(4) 16KB x 4 |
|
CACHE JUMPER CONFIGURATION |
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|
Size |
J2 |
J3 |
J4 |
J5 |
J6 |
|
32KB(Two Way Set) |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
1 & 2 |
|
32KB(Direct Map) |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
32KB(Direct Map) |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
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Note: Pins designated should be in the closed position. |
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