MICRONICS COMPUTERS, INC.
80486 ASIC SYSTEM BOARD
|
Processor |
80486DX |
|
Processor Speed |
33MHz |
|
Chip Set |
Micronics |
|
Max. Onboard DRAM |
64MB |
|
Cache |
64/128/256KB |
|
BIOS |
Phoenix |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery connector |
J13 |
Turbo LED |
W9 |
|
Speaker |
J30 |
Reset switch |
W10 |
|
Keylock |
J31 |
Turbo switch |
W11 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper/Switch |
Position | |
|
|
Factory configured-do not alter |
SW1/1 |
Off |
|
|
Factory configured-do not alter |
SW1/2 |
Off |
|
|
Factory configured-do not alter |
SW1/3 |
Off |
|
|
Factory configured-do not alter |
SW1/4 |
Off |
|
|
Factory configured-do not alter |
SW1/5 |
Off |
|
|
Factory configured-do not alter |
SW1/6 |
Off |
|
|
Video BIOS cacheable |
SW1/7 |
Off |
|
Video BIOS not cacheable |
SW1/7 |
On | |
|
|
Factory configured-do not alter |
SW1/8 |
Off |
|
|
70ns DRAM select |
SW2/6 |
Off |
|
80ns DRAM select |
SW2/6 |
On | |
|
64KB or 256KB cache select |
SW2/7 |
Off | |
|
128KB cache select |
SW2/7 |
On | |
|
64KB cache select |
SW2/8 |
Off | |
|
128KB or 256KB cache select |
SW2/8 |
On | |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
|
128KB |
(4) 32K x 8 |
None |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
W5 |
W6 |
|
128KB or 256KB |
Closed |
N/A |
|
64KB |
Open |
N/A |
|
256KB |
N/A |
Closed |
|
64KB or 128KB |
N/A |
Open |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(4) 256KB x 9 |
NONE |
NONE |
NONE |
|
2MB |
(4) 256KB x 9 |
(4) 256KB x 9 |
NONE |
NONE |
|
3MB |
(4) 256KB x 9 |
(4) 256KB x 9 |
(4) 256KB x 9 |
NONE |
|
4MB |
(4) 256KB x 9 |
(4) 256KB x 9 |
(4) 256KB x 9 |
(4) 256KB x 9 |
|
4MB |
(4) 1MB X 9 |
NONE |
NONE |
NONE |
|
5MB |
(4) 256KB x 9 |
(4) 1MB x 9 |
NONE |
NONE |
|
6MB |
(4) 256KB x 9 |
(4) 256KB x 9 |
(4) 1MB x 9 |
NONE |
|
7MB |
(4) 256KB x 9 |
(4) 256KB x 9 |
(4) 256KB x 9 |
(4) 1MB x 9 |
|
8MB |
(4) 1MB x 9 |
(4) 1MB x 9 |
NONE |
NONE |
|
9MB |
(4) 256KB x 9 |
(4) 1MB x 9 |
(4) 1MB x 9 |
NONE |
|
10MB |
(4) 256KB x 9 |
(4) 256KB x 9 |
(4) 1MB x 9 |
(4) 1MB x 9 |
|
12MB |
(4) 1MB x 9 |
(4) 1MB x 9 |
(4) 1MB x 9 |
NONE |
|
13MB |
(4) 256KB x 9 |
(4) 1MB x 9 |
(4) 1MB x 9 |
(4) 1MB x 9 |
|
DRAM CONFIGURATION (CONTINUED) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
16MB |
(4) 1MB x 9 |
(4) 1MB x 9 |
(4) 1MB x 9 |
(4) 1MB x 9 |
|
16MB |
(4) 4MB x 9 |
NONE |
NONE |
NONE |
|
20MB |
(4) 1MB x 9 |
(4) 4MB x 9 |
NONE |
NONE |
|
24MB |
(4) 1MB x 9 |
(4) 1MB x 9 |
(4) 4MB x 9 |
NONE |
|
28MB |
(4) 1MB x 9 |
(4) 1MB x 9 |
(4) 1MB x 9 |
(4) 4MB x 9 |
|
32MB |
(4) 4MB x 9 |
(4) 4MB x 9 |
NONE |
NONE |
|
36MB |
(4) 1MB x 9 |
(4) 4MB x 9 |
(4) 4MB x 9 |
NONE |
|
40MB |
(4) 1MB x 9 |
(4) 1MB x 9 |
(4) 4MB x 9 |
(4) 4MB x 9 |
|
48MB |
(4) 4MB x 9 |
(4) 4MB x 9 |
(4) 4MB x 9 |
NONE |
|
52MB |
(4) 1MB x 9 |
(4) 4MB x 9 |
(4) 4MB x 9 |
(4) 4MB x 9 |
|
64MB |
(4) 4MB x 9 |
(4) 4MB x 9 |
(4) 4MB x 9 |
(4) 4MB x 9 |
|
DRAM SWITCH CONFIGURATION | |||||
|
Size |
SW2/1 |
SW2/2 |
SW2/3 |
SW2/4 |
SW2/5 |
|
1MB |
On |
On |
On |
On |
On |
|
2MB |
Off |
On |
On |
On |
On |
|
3MB |
On |
Off |
On |
On |
On |
|
4MB |
Off |
Off |
On |
On |
On |
|
4MB |
On |
On |
Off |
On |
On |
|
5MB |
On |
On |
Off |
On |
On |
|
6MB |
On |
Off |
On |
Off |
On |
|
7MB |
Off |
On |
On |
Off |
On |
|
8MB |
Off |
On |
Off |
On |
On |
|
9MB |
On |
Off |
Off |
Off |
On |
|
10MB |
Off |
Off |
On |
Off |
On |
|
12MB |
On |
Off |
Off |
On |
On |
|
13MB |
Off |
Off |
Off |
Off |
On |
|
16MB |
Off |
Off |
Off |
On |
On |
|
16MB |
On |
On |
Off |
On |
Off |
|
20MB |
On |
On |
Off |
Off |
Off |
|
24MB |
On |
Off |
On |
Off |
Off |
|
28MB |
Off |
On |
On |
Off |
Off |
|
32MB |
Off |
On |
Off |
On |
Off |
|
36MB |
On |
Off |
Off |
Off |
Off |
|
40MB |
Off |
Off |
On |
Off |
Off |
|
48MB |
On |
Off |
Off |
On |
Off |
|
52MB |
Off |
Off |
Off |
Off |
Off |
|
64MB |
Off |
Off |
Off |
On |
Off |