OGIVAR INC.
INTERSYSTEM 386SX
|
Processor |
80386SX (exact location unidentified) |
|
Processor Speed |
16/20MHz |
|
Chip Set |
Unidentified |
|
Max. Onboard DRAM |
8MB |
|
Cache |
None |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
80387SX (exact location unidentified) |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J2 |
Speaker |
J13 |
|
Reset switch |
J11 |
Power LED & keylock |
J14 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Factory configured - do not alter |
J12 |
N/A |
|
|
Factory configured - do not alter |
J15 |
N/A |
|
|
Battery type select external |
JP1 |
Open |
|
Battery type select internal |
JP1 |
pins 1 & 2 closed | |
|
|
BIOS type select 27256 |
JP2 |
pins 2 & 3 closed |
|
BIOS type select 27128 |
JP2 |
pins 1 & 2 closed | |
|
|
Monitor type select color |
JP4 |
Closed |
|
Monitor type select monochrome |
JP4 |
Open | |
|
|
NPU disabled |
JP7 |
Closed |
|
NPU enabled |
JP7 |
Open | |
|
|
Pipeline mode enabled |
JP8 |
Closed |
|
Pipeline mode disabled |
JP8 |
Open | |
|
Note: NPU must be synchronous with CPU. | |||
|
DRAM CONFIGURATION | ||||
|
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 |
|
Note: Banks locations are unidentified and are labeled on the board in the following manner: | ||||
|
Bank 0: SIMM 4 & 8 | ||||
|
Bank 1: SIMM 3 & 7 | ||||
|
Bank 2: SIMM 2 & 6 | ||||
|
Bank 3: SIMM 1 & 5 | ||||