NORTHGATE COMPUTER SYSTEMS, INC.
OMNISTATION 286
|
Processor |
80286 |
|
Processor Speed |
12.5MHz |
|
Chip Set |
None |
|
Max. Onboard DRAM |
4MB |
|
Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Bus mouse port, floppy drive interface, IDE interface, parallel port, proprietary 16-bit AT expansion slot, serial ports (2), VGA port |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Proprietary expansion card |
EX1 |
Serial port 1 |
J9 |
|
Bus mouse port |
J4 |
Parallel port |
J10 |
|
Reset switch |
J6 |
VGA port |
J12 |
|
Floppy drive interface |
J7 |
IDE interface |
J14 |
|
Serial port 2 |
J8 |
IDE interface LED & keylock |
J15 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Factory configured - do not alter |
W2 |
pins 1 & 2 closed | |
|
Monitor type select monochrome |
W3 |
pins 1 & 2 closed | |
|
Monitor type select color |
W3 |
pins 2 & 3 closed | |
|
Floppy drive interface enabled |
W4 |
pins 2 & 3 closed | |
|
Floppy drive interface disabled |
W4 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
W5Z |
pins 1 & 2 closed | |
|
NPU type select 12.5MHz |
W9 |
pins 1 & 2 closed | |
|
NPU type select 6MHz |
W9 |
pins 2 & 3 closed | |
|
VGA port enabled |
W11 |
pins 2 & 3 closed | |
|
VGA port disabled |
W11 |
pins 1 & 2 closed | |
|
IDE interface LED enabled |
W12 |
pins 2 & 3 closed | |
|
IDE interface LED disabled |
W12 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
W15 |
pins 1 & 2 closed | |
|
Bus mouse port enabled (IRQ12) |
W16 |
Closed | |
|
Bus mouse port disabled |
W16 |
Open | |
|
Factory configured - do not alter |
W17 |
Open | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
512KB |
(2) 256K x 9 |
NONE |
|
1MB |
(2) 256K x 9 |
(2) 256K x 9 |
|
2MB |
(2) 1M x 9 |
NONE |
|
2.5MB |
(2) 1M x 9 |
(2) 256K x 9 |
|
4MB |
(2) 1M x 9 |
(2) 1M x 9 |
|
CONNECTIONS (AT EXPANSION CARD) | |||
|
Purpose |
Location |
Purpose |
Location |
|
Data access LED |
J1 |
Turbo LED |
J7 |
|
INTERRUPT JUMPER CONFIGURATION (AT EXPANSION CARD) | |||||
|
Interrupt |
J2 |
J3 |
J4 |
J5 |
J6 |
|
IRQ2 |
Closed |
Open |
Open |
Open |
Open |
|
IRQ3 |
Open |
Open |
Open |
Open |
Closed |
|
IRQ4 |
Open |
Open |
Open |
Closed |
Open |
|
IRQ5 |
Open |
Open |
Closed |
Open |
Open |
|
IRQ7 |
Open |
Closed |
Open |
Open |
Open |