NORTHGATE COMPUTER SYSTEMS, INC.
SUPERMICRO 286
|
Processor |
80286 |
|
Processor Speed |
12/16/20MHz |
|
Chip Set |
VLSI |
|
Max. Onboard DRAM |
4MB |
|
SRAM Cache |
None |
|
BIOS |
Award |
|
Dimensions |
355mm x 304mm |
|
I/O Options |
16-bit onboard bus memory slot, parallel port, serial port (2) |
|
NPU Options |
80287 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Reset switch |
J1 |
Parallel port |
J201 |
|
Speaker |
J2 |
Serial port 2 (COM2) |
J202 |
|
External battery |
J3 |
Serial port 1 (COM1) |
J203 |
|
Turbo LED |
J5 |
16-bit onboard bus memory slot |
S1 |
|
Power LED & keylock |
J6 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
RAM select 0 wait states |
W3 |
On | |
|
RAM select 1 wait state |
W3 |
Off | |
|
ROM select 0 wait states |
W4 |
On | |
|
ROM select 1 wait state |
W4 |
Off | |
|
Monitor type select color |
W10 |
pins 2 & 3 closed | |
|
Monitor type select monochrome |
W10 |
pins 1 & 2 closed | |
|
CPU speed select high |
W11 |
Open | |
|
CPU speed select low |
W11 |
pins 2 & 3 closed | |
|
CPU speed select keyboard control |
W11 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
W6 |
W7 |
|
512KB |
(18) 41256 |
NONE |
Off |
On |
|
1MB |
(18) 41256 |
(18) 41256 |
Off |
Off |
|
2MB |
(18) 411000 |
NONE |
On |
On |
|
4MB |
(18) 411000 |
(18) 411000 |
On |
Off |
|
MEMORY SPEED CONFIGURATION | |
|
Speed |
W5 |
|
60ns |
pins 1 & 2 closed |
|
80ns |
pins 1 & 2, 3 & 4 closed |
|
100ns |
pins 2 & 3 closed |
|
Note:Speed is factory configured and should not be altered. | |
|
NPU SPEED CONFIGURATION | |||
|
Speed |
OSC |
W1 |
W2 |
|
7.15MHz |
7.15MHz |
pins 1 & 2 closed |
pins 3 & 4 closed |
|
7.15MHz |
21.45MHz |
pins 2 & 3 closed |
pins 3 & 4 closed |
|
10.00MHz |
10.00MHz |
pins 1 & 2 closed |
Pins 5 & 6 closed |
|
10.00MHz |
30.00MHz |
pins 2 & 3 closed |
Pins 5 & 6 closed |
|
14.32MHz |
14.32MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
14.32MHz |
42.96MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
SERIAL PORT CONFIGURATION | |||||
|
Port 1 (J203) |
Port 2 (J202) |
SW201/1 |
SW201/2 |
SW202/1 |
SW202/2 |
|
COM1/IRQ4 |
COM2/IRQ3 |
Off |
Off |
On |
On |
|
COM1/IRQ4 |
Disabled |
Off |
On |
On |
Off |
|
Disabled |
COM2/IRQ3 |
Off |
On |
Off |
On |
|
Disabled |
Disabled |
On |
On |
N/A |
N/A |
|
PARALLEL PORT CONFIGURATION | |||||
|
LPT |
IRQ |
SW201/3 |
SW201/4 |
SW202/3 |
SW202/4 |
|
LPT1 |
IRQ5 |
Off |
Off |
On |
Off |
|
LPT1 |
IRQ7 |
Off |
Off |
Off |
On |
|
LPT2 |
IRQ5 |
Off |
On |
On |
Off |
|
LPT2 |
IRQ7 |
Off |
On |
Off |
On |
|
Disabled |
N/A |
On |
N/A |
N/A |
N/A |