NORTHGATE COMPUTER SYSTEMS, INC.
386/486/486SX (486 BOARD)
|
Processor |
80486SX/80486DX |
|
Processor Speed |
20/33MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit external memory card slot |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J10 |
Reset switch |
J23 pins 9 & 19 |
|
Speaker |
J23 pins 1 - 4 |
Power LED & Keylock |
J23 pins 11 - 15 |
|
Turbo switch |
J23 pins 7 & 17 |
32-bit external memory card |
S1 |
|
Turbo LED |
J23 pins 8 & 18 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select monochrome |
JP1 |
Open | |
|
Monitor type select color |
JP1 |
Closed | |
|
Battery type select internal |
JP2 |
pins 2 & 3 closed | |
|
Battery type select external |
JP2 |
pins 1 & 2 closed | |
|
Factory configured - do not alter |
JP3 |
Open | |
|
Factory configured - do not alter |
JP4 |
N/A | |
|
Factory configured - do not alter |
JP9 |
N/A | |
|
Factory configured - do not alter |
JP12 |
N/A | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
1MB |
(4) 256K x 9 |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
|
5MB |
(4) 256K x 9 |
(4) 1M x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
TAG |
Dirty Bit |
|
64KB |
(8) 8K x 8 |
(1) 8K x 8 |
(1) 16K x 1 |
|
Note:The cache, TAG, and dirty bit chip locations and sizes are unidentified. | |||