MICROMEDIA TECHNOLOGIES, INC.
486-VLS
|
Processor |
80486SX/80486DX/80486DX2 |
|
Processor Speed |
25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
SIS |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256KB |
|
BIOS |
AMI |
|
Dimensions |
230mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (2) |
|
NPU Options |
None |
|
CONNECTIONS |
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|
Purpose |
Location |
Purpose |
Location |
|
Power LED & keylock |
CN1 |
Turbo switch |
CN5 |
|
Reset switch |
CN2 |
External battery |
CN6 |
|
Speaker |
CN3 |
32-bit VESA Local bus slot |
S1 |
|
Turbo LED |
CN4 |
32-bit VESA Local bus slot |
S2 |
|
USER CONFIGURABLE SETTINGS |
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|
Function |
Jumper |
Position |
|
|
|
80486 (PQFP) |
JP16 |
Open |
|
|
80486(PGA) |
JP16 |
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 |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
|
CPU TYPE CONFIGURATION |
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|
Type |
JP13 |
JP14 |
JP15 |
|
80486SX |
Open |
pins 2 & 3 closed |
Open |
|
80487SX |
pins 2 & 3 closed |
pins 1 & 2 closed |
Closed |
|
80486DX |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
80486DX2 |
pins 1 & 2 closed |
pins 1 & 2 closed |
Closed |
|
CPU SPEED CONFIGURATION |
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|
Type |
JP20 |
JP21 |
JP22 |
|
25MHz |
Closed |
Open |
Open |
|
33MHz |
Closed |
Closed |
Closed |
|
40MHz |
Closed |
Closed |
Open |
|
50MHz |
Open |
Open |
Closed |
|
CACHE JUMPER CONFIGURATION |
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|
Size |
JP1 |
JP2 |
JP3 |
JP4 |
JP5 |
JP6 |
JP7 |
|
64KB |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
N/A |
pins 1 & 2 |
|
128KB |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
|
256KB |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
|
Note: Pins designated should be in the closed position. |
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|
VESA WAIT STATE/BUS SPEED (S1 & S2) CONFIGURATION |
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|
CPU speed |
S1/JP8 |
S1/JP9 |
S2/JP10 |
S2/JP11 |
|
£ 33MHz |
pins 1 & 2 closed |
N/A |
pins 1 & 2 closed |
N/A |
|
> 33MHz |
pins 2 & 3 closed |
N/A |
pins 2 & 3 closed |
N/A |
|
0 wait states |
N/A |
pins 1 & 2 closed |
N/A |
pins 1 & 2 closed |
|
1 wait state |
N/A |
pins 2 & 3 closed |
N/A |
pins 2 & 3 closed |