NOVACOR, INC.
OPTimum EISA486SD - 6A5B1
|
Processor |
80486SX/80487SX/80486DX |
|
Processor Speed |
20/25/33/40/50MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
32MB |
|
SRAM Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
330mm x 218mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J4 |
Reset switch |
S9 |
|
Power LED & keylock |
J5 | ||
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Jumper |
Position | |
|
Monitor type select color |
JP4 |
closed | |
|
Monitor type select monochrome |
JP4 |
open | |
|
CPU speed select iOCS/1 |
JP8 |
pins 1 & 2 closed | |
|
CPU speed select iOCS/2 |
JP8 |
pins 2 & 3 closed | |
|
DRAM CONFIGURATION | ||
|
Size |
Bank 0 |
Bank 1 |
|
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 | ||
|
CPU |
JP7 |
JP9 |
|
80486DX |
pins 1 & 2 and 3 & 4 closed |
pins 2 & 3 closed |
|
80487SX |
pins 1 & 2 and 3 & 4 closed |
pins 1 & 2 closed |
|
80486SX |
pins 2 & 3 closed |
open |
|
CPU SPEED CONFIGURATION | ||||
|
Speed |
JP1 |
JP2 |
JP3 |
JP6 |
|
50MHz |
closed |
closed |
pins 1 & 2 closed |
open |
|
40MHz |
open |
closed |
pins 1 & 2 closed |
open |
|
33MHz |
closed |
open |
pins 1 & 2 closed |
open |
|
25MHz |
open |
open |
pins 1 & 2 closed |
open |
|
20MHz |
open |
open |
pins 2 & 3 closed |
closed |
|
SRAM JUMPER CONFIGURATION | |||||||
|
Size |
JP5 |
JP10 |
JP11 |
JP12 |
JP13 |
JP14 |
JP15 |
|
64KB |
pins 2 & 3 closed |
open |
open |
open |
open |
open |
open |
|
128KB |
pins 1 & 2 closed |
open |
open |
closed |
open |
closed |
open |
|
256KB |
pins 2 & 3 closed |
open |
closed |
closed |
closed |
closed |
open |
|
512KB |
pins 1 & 2 closed |
closed |
closed |
closed |
closed |
closed |
closed |
|
SRAM CONFIGURATION | |||||
|
Size |
Cache SRAM |
Location |
TAG (U50) |
TAG (U51) |
Dirty bit (U64) |
|
64KB |
(8) 8K x 8 |
Banks 0 & 1 |
(1) 8K x 8 |
N/A |
(1) 16K x 1 |
|
128KB |
(4) 32K x 8 |
Bank 0 |
(1) 8K x 8 |
N/A |
(1) 16K x 1 |
|
256KB |
(8) 32K x 8 |
Banks 0 & 1 |
(1) 8K x 8 |
(1) 8K x 8 |
(1) 16K x 1 |
|
512KB |
(4) 128K x 8 |
Bank 0 |
(1) 32K x 8 |
N/A |
(1) 64K x 1 |
|
Note:Dirty bit (U64) can always accommodate (1) 64K x 1 for any of the four configurations. | |||||