TANDY/RADIO SHACK
4100 MT
|
Processor |
80486SX/ODP486SX/80487SX/80486DX/80486DX2/ODP486DX2 |
|
Processor Speed |
25/33/50(internal)/66(internal)MHz |
|
Chip Set |
Unidentified |
|
Video Chip Set |
ATI |
|
Maximum Onboard Memory |
64MB |
|
Maximum Video Memory |
2MB |
|
Cache |
64/256KB |
|
BIOS |
Unidentified |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
Floppy drive interface, IDE interface, VGA feature connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
IDE interface |
J22 |
Floppy drive interface |
J24 |
|
VGA feature connector |
J23 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
On board video enabled |
SW1/1 |
Off | |
|
On board video disabled |
SW1/1 |
On | |
|
» |
Factory configured - do not alter |
SW1/2 |
Off |
|
» |
Factory configured - do not alter |
SW1/3 |
Off |
|
Password enabled |
SW1/4 |
Off | |
|
Password disabled |
SW1/4 |
On | |
|
Monitor type select color |
SW1/5 |
On | |
|
Monitor type select monochrome |
SW1/5 |
Off | |
|
» |
Factory configured - do not alter |
SW1/6 |
Off |
|
» |
Factory configured - do not alter |
SW1/7 |
Off |
|
Setup access enabled |
SW1/8 |
Off | |
|
Setup access disabled |
SW1/8 |
On | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
1MB |
(1) 256K x 36 |
None |
None |
None |
|
2MB |
(1) 256K x 36 |
(1) 256K x 36 |
None |
None |
|
3MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
4MB |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
4MB |
(1) 1M x 36 |
None |
None |
None |
|
5MB |
(1) 1M x 36 |
(1) 256K x 36 |
None |
None |
|
6MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
7MB |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
None |
None |
|
9MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
None |
|
10MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
None |
|
13MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
|
16MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
16MB |
(1) 4M x 36 |
None |
None |
None |
|
17MB |
(1) 4M x 36 |
(1) 256K x 36 |
None |
None |
|
18MB |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
None |
|
19MB |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
21MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
None |
|
22MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
24MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
None |
|
25MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
|
DRAM CONFIGURATION (CON’T) | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
28MB |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
None |
None |
|
33MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
None |
|
34MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
(1) 256K x 36 |
|
36MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
None |
|
37MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
(1) 256K x 36 |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
None |
|
49MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 256K x 36 |
|
52MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 1M x 36 |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
64KB |
(8) 8K x 8 |
(1) 8K x 8 |
|
256KB |
(8) 32K x 8 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | ||
|
Size |
E7 |
E8 |
|
64KB |
Open |
Open |
|
256KB |
Closed |
Closed |
|
VIDEO MEMORY CONFIGURATION |
|
Note: Board accepts 512KB/2MB of video memory. The size of the chips are unidentified. The number of banks is unidentified. |
|
CPU TYPE SELECTION | |||||
|
Type |
E9 |
E10 |
E11 |
E12 |
E13 |
|
80486SX |
Open |
2 & 3 |
1 & 2 |
Open |
2 & 3 |
|
ODP486SX |
1 & 2 |
1 & 2 |
2 & 3 |
Closed |
2 & 3 |
|
80487SX |
1 & 2 |
1 & 2 |
2 & 3 |
Closed |
2 & 3 |
|
80486DX |
2 & 3 |
1 & 2 |
1 & 2 |
Closed |
2 & 3 |
|
80486DX2 |
2 & 3 |
1 & 2 |
1 & 2 |
Closed |
2 & 3 |
|
ODP486DX2 |
1 & 2 |
1 & 2 |
2 & 3 |
Closed |
1 & 2 |
|
Note: Pins designated should be in the closed position. | |||||