GCH SYSTEMS, INC.
33MHz 80486 Baby AT (Rev. B)
|
Processor |
80486DX |
|
Processor Speed |
33MHz |
|
Chip Set |
ETEQ |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/256KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JP1 |
Reset switch |
JP24 |
|
Power LED & keylock |
JP22 |
Turbo LED |
JP25 |
|
Speaker |
JP23 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
| » |
Monitor type select color |
JP2 |
Closed |
|
Monitor type select monochrome |
JP2 |
Open | |
| » |
Factory configured - do not alter |
JP3 |
pins 1 & 2, 3 & 4 closed |
| » |
Factory configured - do not alter |
JP4 |
pins 1 & 2, 3 & 4 closed |
| » |
Factory configured - do not alter |
JP5 |
pins 2 & 3 closed |
| » |
Factory configured - do not alter |
JP6 |
Closed |
| » |
Factory configured - do not alter |
JP7 |
pins 1 & 2 closed |
| » |
Factory configured - do not alter |
JP10 |
pins 1 & 2 closed |
| » |
Factory configured - do not alter |
JP11 |
Closed |
| » |
Factory configured - do not alter |
JP12 |
Closed |
| » |
Factory configured - do not alter |
JP13 |
Closed |
| » |
Factory configured - do not alter |
JP16 |
Closed |
| » |
Factory configured - do not alter |
JP18 |
Closed |
| » |
Factory configured - do not alter |
JP19 |
pins 1 & 2 closed |
| » |
CPU speed select iOSC/2 |
JP21 |
Closed |
|
CPU speed select iOSC/1 |
JP21 |
Open | |
| » |
NPU disabled |
JP20 |
Open |
|
NPU enabled |
JP20 |
Closed | |
|
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) 1M x 9 |
(4) 256K x 9 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
17MB |
(4) 4M x 9 |
(4) 256K x 9 |
|
20MB |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
64KB |
(8) 8K x 8 |
(2) 16K x 4 |
|
256KB |
(8) 32K x 8 |
(2) 16K x 4 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP8 |
JP9 |
JP14 |
JP15 |
JP17 |
|
64KB |
2 & 3 |
2 & 3 |
Open |
Open |
Open |
|
256KB |
1 & 2 |
1 & 2 |
Closed |
Closed |
Closed |
|
Note: Pins designated should be in the closed position. | |||||