COMPUADD, INC.
386 SERIES MODELS 320/325
|
Processor |
80386DX |
|
Processor Speed |
20/25MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
16MB (on external memory card) |
|
Cache |
32KB (exact location unidentified) |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit external memory card, IDE interface, serial ports (2), parallel port |
|
NPU Options |
80387DX |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J1 |
IDE interface LED |
J15 |
|
Power LED & keylock |
J4 |
Reset switch |
J24 |
|
External battery |
J7 |
32-bit external memory card |
SL1 |
|
IDE interface |
J8 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
|
Monitor type select color |
J3 |
Closed |
|
Monitor type select monochrome |
J3 |
Open | |
|
|
Cache enabled |
J6 |
Closed |
|
Cache disabled |
J6 |
Open | |
|
|
IDE active high reset |
J9 |
pins 1 & 2 closed |
|
IDE active low reset |
J9 |
pins 2 & 3 closed | |
|
|
IDE interface enabled |
J10 |
Closed |
|
IDE interface disabled |
J10 |
Open | |
|
|
Cache enabled |
J14 |
pins 1 & 2 closed |
|
Cache disabled |
J14 |
pins 2 & 3 closed | |
|
|
Serial port 1 enabled (IRQ4) |
SW1/1 |
On |
|
Serial port 1 disabled (IRQ4) |
SW1/1 |
Off | |
|
|
Serial port 2 enabled (IRQ3) |
SW1/2 |
On |
|
Serial port 2 disabled (IRQ3) |
SW1/2 |
Off | |
|
|
Parallel port enabled |
SW1/3 |
On |
|
Parallel port disabled |
SW1/3 |
Off | |
|
|
Parallel port IRQ select IRQ7 |
SW1/4 |
On |
|
Parallel port IRQ select IRQ5 |
SW1/4 |
Off | |
|
|
Factory configured - do not alter |
SW1/5 |
Off |
|
|
Factory configured - do not alter |
SW1/6 |
Off |
|
Note : On some revisions, switch SW1 may be a 4-position switch. | |||
|
CACHE CONFIGURATION |
|
Note: The location and configuration of the cache is unidentified. |
|
NPU CONFIGURATION | ||
|
Setting |
J12 |
J13 |
|
NPU not installed |
Closed |
Open |
|
NPU installed |
Open |
Closed |
|
BIOS CONFIGURATION | |
|
Size |
J5 |
|
27128 |
pins 1 & 8, 2 & 7 closed |
|
27256 |
pins 3 & 6, 4 & 5 closed |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Switch |
Position | |
|
|
Memory between 512KB & 640KB enabled |
SW1/5 |
On |
|
Memory between 512KB & 640KB disabled |
SW1/5 |
Off | |
|
|
Memory between 256KB & 512KB enabled |
SW1/6 |
On |
|
Memory between 256KB & 512KB disabled |
SW1/6 |
Off | |
|
|
Factory configured - do not alter |
SW1/7 |
Off |
|
|
Factory configured - do not alter |
SW1/8 |
Off |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
NONE |
|
3MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
|
4MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
DRAM SWITCH CONFIGURATION | ||||
|
Size |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
|
1MB |
Off |
Off |
Off |
Off |
|
2MB |
On |
Off |
Off |
Off |
|
3MB |
On |
On |
Off |
Off |
|
4MB |
On |
On |
On |
Off |
|
4MB |
Off |
Off |
Off |
On |
|
8MB |
On |
Off |
Off |
On |
|
12MB |
On |
On |
Off |
On |
|
16MB |
On |
On |
On |
On |