COMPUTREND SYSTEMS, INC.
ALI 486 NONCACHE
|
Processor |
80486SX/80487SX/80486DX/ODP486SX/80486DX2 |
|
Processor Speed |
16/20/25/33/50(internal)/66(internal) |
|
Chip Set |
ALI |
|
Max. Onboard DRAM |
32MB |
|
SRAM Cache |
None |
|
BIOS |
AMI |
|
Dimensions |
220mm x 220mm |
|
I/O Options |
Auxiliary keyboard connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Auxiliary keyboard |
J1 |
Turbo switch |
J4/pins 15 - 17 |
|
Power LED & keylock |
J4/pins 1 - 5 |
Turbo LED |
J4/pins 12 & 13 |
|
Speaker |
J4/pins 7 - 10 |
External battery |
J3 |
|
Reset switch |
J4/pins 19 & 20 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
CMOS memory normal operation |
J3 |
connected | |
|
CMOS memory clear |
J3 |
pins 3 & 4 closed | |
|
Factory configured - do not alter |
JP1 |
open | |
|
Monitor type select monochrome |
JP2 |
pins 1 & 2 closed | |
|
Monitor type select color |
JP2 |
pins 2 & 3 closed | |
|
CPU JUMPER CONFIGURATION | ||||||
|
CPU |
Location |
JP3 |
JP4 |
JP5 |
JP6 |
JP7 |
|
80486DX2 |
PGA |
open |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
|
ODP486SX |
PGA |
open |
pins 2 & 3 |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
|
80486DX |
PGA |
open |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
pins 2 & 3 |
|
80487SX |
PGA |
open |
pins 2 & 3 |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
|
80486SX |
PQFP |
closed |
pins 1 & 2 |
pins 1 & 2 |
open |
pins 1 & 2 |
|
Note:Pins designated should be in the closed position. | ||||||
|
CPU SPEED/BUS SPEED CONFIGURATION | |||||
|
CPU Speed |
Bus Clock |
JP8 |
JP9 |
JP10 |
JP11 |
|
16MHz |
SYS/4 |
pins 2 & 3 |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
|
20MHz |
SYS/5 |
pins 2 & 3 |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
|
25MHz |
SYS/6 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
|
33MHz |
SYS/8 |
pins 1 & 2 |
pins 1 & 2 |
pins 1 & 2 |
pins 2 & 3 |
|
40MHz |
SYS/5 |
pins 2 & 3 |
pins 1 & 2 |
pins 2 & 3 |
pins 1 & 2 |
|
Note:Pins designated should be in the closed position. | |||||
|
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 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |