UNIDENTIFIED
407
|
Processor |
80486SX/80487SX/80486DX/80486DX2/Pentium Overdrive |
|
Processor Speed |
20/25/33/40/50(internal)/50/66(internal)MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
256MB |
|
Cache |
128/256/1024KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
32-bit VESA local bus slots (3) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J4 |
Speaker |
JP22 |
|
Power LED & keylock |
J6 |
Reset switch |
S9 |
|
Turbo LED |
JP15 |
32-bit VESA local bus slots |
SL1 - SL3 |
|
Turbo switch |
JP17 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
|
Monitor type select color |
JP2 |
Closed |
|
Monitor type select monochrome |
JP2 |
Open | |
|
|
VESA clock delay enabled |
JP12 |
pins 1 & 2 closed |
|
VESA clock delay disabled |
JP12 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(1) 1M x 36 |
NONE |
NONE |
NONE |
|
8MB |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
NONE |
|
12MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 1M x 36 |
NONE |
|
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 |
|
20MB |
(1) 1M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
32MB |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
NONE |
|
40MB |
(1) 1M x 36 |
(1) 1M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
48MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
NONE |
|
64MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 4M x 36 |
|
64MB |
(1) 16M x 36 |
NONE |
NONE |
NONE |
|
80MB |
(1) 4M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
128MB |
(1) 16M x 36 |
(1) 16M x 36 |
NONE |
NONE |
|
160MB |
(1) 4M x 36 |
(1) 4M x 36 |
(1) 16M x 36 |
(1) 16M x 36 |
|
192MB |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 16M x 36 |
NONE |
|
208MB |
(1) 4M x 36 |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 16M x 36 |
|
256MB |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 16M x 36 |
(1) 16M x 36 |
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
TAG |
|
128KB |
(4) 32K x 8 |
NONE |
(1) 32K x 8 |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
(1) 32K x 8 |
|
1MB |
(4) 128K x 8 |
(4) 128K x 8 |
(1) 128K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
JP6 |
JP7 |
JP9 |
JP10 |
JP13 |
|
128KB |
Open |
pins 1 & 2 closed |
pins 1 & 2 closed |
Open |
Closed |
|
256KB |
Open |
pins 2 & 3 closed |
pins 2 & 3 closed |
Closed |
Closed |
|
1MB |
Closed |
pins 2 & 3 closed |
pins 2 & 3 closed |
Closed |
Closed |
|
CPU TYPE CONFIGURATION | ||
|
Type |
JP4 |
JP5 |
|
80486SX |
pins 2 & 3 closed |
Open |
|
80487SX |
pins 1 & 2, 3 & 4 closed |
pins 1 & 2 closed |
|
80486DX |
pins 1 & 2, 3 & 4 closed |
pins 2 & 3 closed |
|
80486DX2 |
pins 1 & 2, 3 & 4 closed |
pins 2 & 3 closed |
|
Pentium Overdrive |
pins 1 & 2, 3 & 4 closed |
pins 1 & 2 closed |
|
CPU SPEED CONFIGURATION | |||||
|
Speed |
JPA |
JPB |
JPC |
JP20 |
JP21 |
|
20MHz |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
2 & 3 |
|
25MHz |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
|
33MHz |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
|
40MHz |
1 & 2 |
1 & 2 |
2 & 3 |
2 & 3 |
1 & 2 |
|
50iMHz |
2 & 3 |
1 & 2 |
2 & 3 |
2 & 3 |
2 & 3 |
|
50MHz |
1 & 2 |
2 & 3 |
1 & 2 |
1 & 2 |
1 & 2 |
|
66iMHz |
2 & 3 |
2 & 3 |
1 & 2 |
1 & 2 |
2 & 3 |
|
Note: Pins designated should be in the closed position. | |||||
|
ADS# SIGNAL DELAY CONFIGURATION | ||
|
Speed |
JP3 |
JP27 |
|
20MHz |
pins 2 & 3 closed (normal) |
pins 2 & 3 closed (normal) |
|
25MHz |
pins 2 & 3 closed (normal) |
pins 2 & 3 closed (normal) |
|
33MHz |
pins 2 & 3 closed (normal) |
pins 2 & 3 closed (normal) |
|
33MHz |
pins 1 & 2 closed (delay) |
pins 2 & 3 closed (normal) |
|
40MHz |
pins 1 & 2 closed (delay) |
pins 2 & 3 closed (normal) |
|
50MHz |
pins 1 & 2 closed (delay) |
pins 1 & 2 closed (delay) |
|
VESA WAIT STATE CONFIGURATION | |
|
Wait states |
JP16 |
|
0 wait states |
Open |
|
1 wait state |
Closed |
|
BUS SPEED CONFIGURATION | ||
|
CPU speed |
JP11 |
JP14 |
|
<= 33MHz |
pins 1 & 2, 3 & 4 closed |
Open |
|
> 33MHz |
pins 2 & 3 closed |
Closed |