ROBOTECH, INC.
GMB-386UN
|
Processor |
80386DX |
|
Processor Speed |
33/40MHz |
|
Chip Set |
UMC |
|
Max. Onboard DRAM |
32MB |
|
Cache |
32/64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
254mm x 220mm |
|
I/O Options |
None |
|
NPU Options |
80387DX/3167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
JP1 |
Speaker |
JP18 |
|
Turbo LED |
JP16 |
Reset switch |
JP19 |
|
Turbo switch |
JP17 |
Power LED & keylock |
JP20 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
» |
CMOS memory normal operation |
JP2 |
pins 1 & 2 closed |
|
CMOS memory clear |
JP2 |
pins 2 & 3 closed | |
|
» |
Monitor type select color |
JP3 |
Closed |
|
Monitor type select monochrome |
JP3 |
Open | |
|
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) 256K x 9 |
(4) 1M x 9 |
|
20MB |
(4) 1M x 9 |
(4) 256K x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
32KB |
(4) 8K x 8 |
NONE |
(1) 8K x 8 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
(1) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 8K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION (WRITE BACK) | ||||||||
|
Size |
JP8 |
JP9 |
JP10 |
JP11 |
JP12 |
JP13 |
JP14 |
JP15 |
|
32KB |
2 & 3 |
Open |
2 & 3 |
1 & 2 |
2 & 3 |
Open |
2 & 3 |
Open |
|
64KB |
1 & 2 |
Closed |
2 & 3 |
2 & 3 |
1 & 2 |
Open |
2 & 3 |
Open |
|
128KB |
1 & 2, 3 & 4 |
Closed |
1 & 2 |
2 & 3 |
2 & 3 |
Closed |
2 & 3 |
Open |
|
256KB |
1 & 2, 4 & 5 |
Closed |
2 & 3 |
2 & 3 |
2 & 3 |
Closed |
1 & 2 |
Closed |
|
Note: Pins designated should be in the closed position. | ||||||||
|
CACHE JUMPER CONFIGURATION (WRITE THROUGH) | ||||||||
|
Size |
JP8 |
JP9 |
JP10 |
JP11 |
JP12 |
JP13 |
JP14 |
JP15 |
|
32KB |
2 & 3 |
Open |
2 & 3 |
2 & 3 |
2 & 3 |
Open |
2 & 3 |
Open |
|
64KB |
1 & 2 |
Closed |
2 & 3 |
2 & 3 |
2 & 3 |
Open |
2 & 3 |
Open |
|
128KB |
1 & 2, 3 & 4 |
Closed |
2 & 3 |
2 & 3 |
2 & 3 |
Closed |
2 & 3 |
Open |
|
256KB |
1 & 2, 4 & 5 |
Closed |
2 & 3 |
2 & 3 |
2 & 3 |
Closed |
2 & 3 |
Closed |
|
Note: Pins designated should be in the closed position. | ||||||||
|
CPU SPEED CONFIGURATION | ||
|
Speed |
JP7 |
JP21 |
|
33MHz |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
40MHz |
pins 2 & 3 closed |
pins 1 & 2 closed |
|
MATH COPROCESSOR WAIT STATE CONFIGURATION | |
|
Wait states |
JP5 |
|
0 wait states |
Closed |
|
1 wait state |
Open |
|
A20 GATE CONFIGURATION | |
|
Setting |
JP4 |
|
Hardware emulate |
Open |
|
8042 keyboard controller |
pins 1 & 2 closed |
|
Cyrix CPU emulate |
pins 2 & 4 closed |
|
Keyboard controller controls Cyrix CPU |
pins 3 & 4 closed |