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 |