MODULAR CIRCUIT TECHNOLOGY
JDR-V486-SX33/DX33/DX2 66
Processor |
80486SX/80486DX/80486DX2 |
Processor Speed |
25/33/66(internal)MHz |
Chip Set |
UMC |
Max. Onboard DRAM |
32MB |
Cache |
128/256KB |
BIOS |
AMI |
Dimensions |
330mm x 218mm |
I/O Options |
32-bit VESA local bus slots (2) |
NPU Options |
None |
CONNECTIONS | |||
Purpose |
Location |
Purpose |
Location |
External battery |
J1 |
Speaker |
J13 |
Turbo LED |
J10 |
Power LED & keylock |
J14 |
Turbo switch |
J11 |
32-bit VESA local bus slots |
SL1 - SL2 |
Reset switch |
J12 |
USER CONFIGURABLE SETTINGS | |||
Function |
Jumper |
Position | |
» |
Monitor type select color |
JP13 |
pins 2 & 3 closed |
Monitor type select monochrome |
JP13 |
pins 1 & 2 closed | |
» |
Factory configured - do not alter |
JP24 |
N/A |
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 |
17MB |
(4) 256K x 9 |
(4) 4M x 9 |
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
CACHE CONFIGURATION | |||
Size |
Bank 0 |
Bank 1 |
TAG |
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 | ||||
Size |
JP22 |
JP23 |
JP27 |
JP28 |
128KB |
pins 2 & 3 closed |
Open |
Closed |
pins 2 & 3 closed |
256KB |
pins 1 & 2 closed |
Closed |
Closed |
pins 2 & 3 closed |
CPU TYPE CONFIGURATION | ||
Type |
JP25 |
JP26 |
80486SX |
pins 1 & 2, 3 & 4 closed |
Open |
80486DX |
pins 1 & 2, 3 & 4 closed |
pins 1 & 2 closed |
80486DX2 |
pins 1 & 2, 3 & 4 closed |
pins 1 & 2 closed |
CPU SPEED CONFIGURATION | ||||
Speed |
JP18 |
JP19 |
JP20 |
JP21 |
25MHz |
Closed |
Closed |
Open |
Open |
33MHz |
Open |
Closed |
Open |
Open |
66iMHz |
Open |
Closed |
Open |
Open |
VESA WAIT STATE CONFIGURATION | |
Wait states |
JP16 |
0 wait states |
pins 1 & 2 closed |
1 wait state |
pins 2 & 3 closed |
BUS SPEED CONFIGURATION | |
CPU speed |
JP15 |
<= 33MHz |
Open |
> 33MHz |
Closed |