UNIDENTIFIED
PMS486DS
|
Processor |
80486DX |
|
Processor Speed |
20/25/33/50MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
330.2mm x 218.4mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
External battery |
J3 |
Speaker |
J18 |
|
Turbo switch |
J16 |
Power LED & keylock |
J19 |
|
Reset switch |
J17 |
Turbo LED |
J20 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
CMOS memory normal operation |
J4 |
pins 2 & 3 closed | |
|
CMOS memory clear |
J4 |
pins 1 & 2 closed | |
|
Monitor type select color |
J5 |
closed | |
|
Monitor type select monochrome |
J5 |
open | |
|
CPU speed select iOSC/2 |
J9 |
pins 2 & 3 closed | |
|
CPU speed select iOSC |
J9 |
pins 1 & 2 closed | |
|
Bus speed select ATCLK/6 |
J10 |
closed | |
|
Bus speed select ATCLK/4 |
J10 |
open | |
|
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 |
Cache CACHE |
Location |
TAG (U42) |
TAG (U55) |
|
64KB |
(8) 8K x 8 |
Bank 0 |
(1) 64K x 1 |
(1) 8K x 8 |
|
128KB |
(16) 8K x 8 |
Banks 0 & 1 |
(1) 64K x 1 |
(1) 8K x 8 |
|
256KB |
(8) 32K x 8 |
Bank 0 |
(1) 64K x 1 |
(1) 32K x 8 |
|
512KB |
(16) 32K x 8 |
Banks 0 & 1 |
(1) 64K x 1 |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||||
|
Size |
J11 |
J12 |
J13 |
J14 |
J15 |
|
64KB |
open |
open |
open |
open |
pins 2 & 3 closed |
|
128KB |
open |
open |
closed |
closed |
pins 2 & 3 closed |
|
256KB |
open |
closed |
closed |
closed |
pins 2 & 3 closed |
|
512KB |
closed |
closed |
closed |
closed |
pins 1 & 2 closed |
|
CPU JUMPER CONFIGURATION | |||
|
CPU |
J6 |
J7 |
J8 |
|
80486DX |
pins 1 & 2 closed |
closed |
pins 2 & 3 closed |
|
80487SX |
pins 2 & 3 closed |
closed |
pins 2 & 3 closed |
|
80486SX |
open |
open |
pins 1 & 2 closed |