NORTHGATE COMPUTER SYSTEMS, INC.
ELEGANCE 486 25/33
|
Processor |
80486DX |
|
Processor Speed |
25/33MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
8MB |
|
Cache |
128KB |
|
BIOS |
AMI |
|
Dimensions |
350mm x 304mm |
|
I/O Options |
Parallel port, serial ports (2), 32-bit external memory card slot |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Turbo LED |
J3 |
Serial port 1 |
J9 |
|
Power LED & keylock |
J4 |
Serial port 2 |
J10 |
|
Speaker |
J5 |
32-bit external memory card |
S1 |
|
Reset switch |
J6 |
Turbo switch |
W6 |
|
Parallel port |
J8 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
Parallel port enabled |
SW2/3 |
Off | |
|
Parallel port disabled |
SW2/3 |
On | |
|
Parallel port select LPT1 |
SW2/4 |
Off | |
|
Parallel port select LPT2 |
SW2/4 |
On | |
|
Factory configured - do not alter |
W1 |
Open | |
|
Factory configured - do not alter |
W4 |
pins 2 & 3 closed | |
|
Altered cache miss wait state select 25MHz CPU |
W5 |
pins 2 & 3 closed | |
|
Altered cache miss wait state select 33MHz CPU |
W5 |
pins 1 & 2 closed | |
|
Monitor type select color |
W7 |
pins 2 & 3 closed | |
|
Monitor type select monochrome |
W7 |
pins 1 & 2 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(4) 256K x 9 |
NONE |
NONE |
NONE |
|
2MB |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
NONE |
|
3MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
NONE |
|
4MB |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
5MB |
(4) 1M x 9 |
NONE |
(4) 256K x 9 |
NONE |
|
6MB |
(4) 1M x 9 |
NONE |
(4) 256K x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
9MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 256K x 9 |
NONE |
|
10MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 256K x 9 |
(4) 256K x 9 |
|
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
Note:Banks 2 & 3 are used when a 32-bit external memory card is installed at S1. | ||||
|
DRAM JUMPER/SWITCH CONFIGURATION | ||||||
|
Size |
SW1/1 |
SW1/2 |
SW1/3 |
SW1/4 |
W8 |
W9 |
|
1MB |
Closed |
Open |
Closed |
Closed |
2 & 3 |
2 & 3 |
|
2MB |
Open |
Open |
Closed |
Open |
2 & 3 |
2 & 3 |
|
3MB |
Open |
Open |
Open |
Closed |
2 & 3 |
2 & 3 |
|
4MB |
Open |
Open |
Open |
Closed |
2 & 3 |
2 & 3 |
|
4MB |
Closed |
Closed |
Closed |
Closed |
1 & 2 |
1 & 2 |
|
5MB |
Closed |
Closed |
Closed |
Open |
1 & 2 |
1 & 2 |
|
6MB |
Closed |
Closed |
Closed |
Open |
1 & 2 |
1 & 2 |
|
8MB |
Open |
Closed |
Closed |
Open |
1 & 2 |
1 & 2 |
|
9MB |
Open |
Closed |
Open |
Closed |
1 & 2 |
1 & 2 |
|
10MB |
Open |
Closed |
Open |
Closed |
1 & 2 |
1 & 2 |
|
12MB |
Open |
Closed |
Open |
Closed |
1 & 2 |
1 & 2 |
|
16MB |
Open |
Closed |
Open |
Open |
1 & 2 |
1 & 2 |
|
Note:Pins designated should be in the closed position. | ||||||
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
64KB |
(8) 64K x 1 |
(2) 64K x 1 |
|
128KB |
(8) 64K x 4 |
(2) 64K x 4 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
W2 |
W3 |
|
64KB |
pin 1 & 2 closed |
pin 1 & 2 closed |
|
128KB |
pin 2 & 3 closed |
pin 2 & 3 closed |
|
PARALLEL PORT IRQ CONFIGURATION | ||
|
IRQ |
SW3/3 |
SW3/4 |
|
IRQ7 |
Off |
On |
|
IRQ5 |
On |
Off |
|
SERIAL PORT 1 CONFIGURATION | ||
|
Setting |
SW2/1 |
SW3/1 |
|
Enabled |
Off |
On |
|
Disabled |
On |
Off |
|
SERIAL PORT 2 CONFIGURATION | ||
|
Setting |
SW2/2 |
SW3/2 |
|
Enabled |
Off |
On |
|
Disabled |
On |
Off |