INFOMATIC POWER SYSTEMS CORPORATION
486 EISA FULL SIZE
|
Processor |
80486SX/80487SX/80486DX/80486DX2 |
|
Processor Speed |
20/25/33/50/66(internal)MHz |
|
Chip Set |
OPTI |
|
Max. Onboard DRAM |
256MB |
|
Cache |
64/128/256/512KB |
|
BIOS |
AMI |
|
Dimensions |
355mm x 304mm |
|
I/O Options |
None |
|
NPU Options |
4167 |
|
CONNECTIONS |
|||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
J4 |
Turbo LED |
J7 |
|
Power LED & keylock |
J5 |
Reset switch |
S9 |
|
Turbo switch |
J6 |
|
|
|
USER CONFIGURABLE SETTINGS |
|||
|
Function |
Jumper |
Position |
|
|
|
External BCLK buffering 80486DX (33/50MHz) |
JP1 |
pins 1 & 2 closed |
|
|
External BCLK buffering 80486SX/80487SX (20/25MHz) |
JP1 |
pins 2 & 3 closed |
|
|
Cache bank select single (128/512KB) |
JP2 |
pins 1 & 2 closed |
|
|
Cache bank select double (64/256KB) |
JP2 |
pins 2 & 3 closed |
|
|
Snooping/Flush 20MHz CPU |
JP8 |
Closed |
|
|
Snooping/Flush > 20MHz CPU |
JP8 |
Open |
|
|
Monitor type select color |
JP9 |
Closed |
|
|
Monitor type select monochrome |
JP9 |
Open |
|
|
CPU clock mode select single frequency |
JP12 |
pins 1 & 2 closed |
|
|
CPU clock mode select double frequency |
JP12 |
pins 2 & 3 closed |
|
DRAM CONFIGURATION |
||||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
Bank 3 |
|
4MB |
(4) 1M x 9 |
NONE |
NONE |
NONE |
|
8MB |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
NONE |
|
12MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
NONE |
|
16MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 1M x 9 |
|
16MB |
(4) 4M x 9 |
NONE |
NONE |
NONE |
|
20MB |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
24MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
NONE |
|
28MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 1M x 9 |
|
32MB |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
NONE |
|
36MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
40MB |
(4) 1M x 9 |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
48MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
NONE |
|
52MB |
(4) 1M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
(4) 4M x 9 |
|
64MB |
(4) 16M x 9 |
NONE |
NONE |
NONE |
|
128MB |
(4) 16M x 9 |
(4) 16M x 9 |
NONE |
NONE |
|
192MB |
(4) 16M x 9 |
(4) 16M x 9 |
(4) 16M x 9 |
NONE |
|
256MB |
(4) 16M x 9 |
(4) 16M x 9 |
(4) 16M x 9 |
(4) 16M x 9 |
|
CPU TYPE CONFIGURATION |
||
|
Type |
JP10 |
JP11 |
|
80486SX |
pins 1 & 2 & 3 & 4 closed |
pins 2 & 3 closed |
|
80487SX |
pins 1 & 2 & 3 & 4 closed |
pins 1 & 2 closed |
|
80486DX |
pins 2 & 3 closed |
Open |
|
EBC SPEED CONFIGURATION |
||
|
Speed |
JP6 |
JP7 |
|
20MHz |
Open |
Open |
|
25MHz |
Open |
Open |
|
33MHz |
Open |
Closed |
|
40MHz |
Closed |
Open |
|
50MHz |
Closed |
Closed |
|
CACHE CONFIGURATION |
||
|
Size |
Bank 0 |
Bank 1 |
|
64KB |
(4) 8K x 8 |
(4) 8K x 8 |
|
128KB |
(4) 32K x 8 |
NONE |
|
256KB |
(4) 32K x 8 |
(4) 32K x 8 |
|
512KB |
(4) 128K x 8 |
NONE |
|
Note:In order to configure your cache for 512K, your board needs to have been specifically ordered. The difference will be that bank 1 will be made up of (4) 32 pin DIP sockets, instead of (4) 28 pin DIP sockets. |
||
|
CACHE TAG CHIP CONFIGURATION |
|||||
|
Size |
JP3 |
JP4 |
JP5 |
U55 |
U56 |
|
64KB |
Open |
Open |
Open |
(1) 8K x 8 |
N/A |
|
128KB |
Closed |
Open |
Open |
(1) 8K x 8 |
N/A |
|
256KB |
Closed |
Closed |
Open |
(1) 8K x 8 |
(1) 8K x 8 |
|
512KB |
Closed |
Closed |
Closed |
(1) 32K x 8 |
N/A |
|
CACHE DIRTY BIT CHIP CONFIGURATION |
||||
|
Size |
JP16 |
JP17 |
JP18 |
U72 & U54 |
|
64KB |
open |
open |
open |
(2) 16K x 1 or (2) 64K x 1 |
|
128KB |
closed |
open |
open |
(2) 16K x 1 or (2) 64K x 1 |
|
256KB |
closed |
closed |
open |
(2) 16K x 1 or (2) 64K x 1 |
|
512KB |
closed |
closed |
closed |
(2) 64K x 1 |
|
CLOCK CONFIGURATION |
|||
|
Type |
JP13 |
JP14 |
JP15 |
|
DS1287/1287A |
pins 1 & 2 closed |
pins 1 & 2 closed |
pins 1 & 2 closed |
|
DS1387/1488 |
pins 2 & 3 closed |
pins 2 & 3 closed |
pins 2 & 3 closed |