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# INTERCOMP, INC.
EISA 486
Processor 80486SX/80487SX/80486DX
Processor Speed 20/25/33/50MHz
Chip Set OPTI
Max. Onboard DRAM 128MB
Cache 64/128/256/512KB
BIOS AMI/MR/Award
Dimensions 330mm x 218mm
I/O Options None
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| Power LED & keylock | J10 | Reset switch | S59 |
|---------------------+----------+----------------+----------|
| Speaker | J29 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+---------+-----------|
| ยป | Monitor type select color | JP6 | Closed |
|---+----------------------------------+---------+-----------|
| | Monitor type select monochrome | JP6 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 64MB | (4) 16M x 9 | NONE |
|------------------+--------------------+--------------------|
| 128MB | (4) 16M x 9 | (4) 16M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
|Size | JP1 | JP2 | JP3 | JP12 | JP13 | JP14 | JP15 |
|-----+------+------+------+------+------+------+------------|
|64KB | Open | Open | Open | Open | Open | Open | pins 2 & 3 |
| | | | | | | | closed |
|-----+------+------+------+------+------+------+------------|
|128KB|Closed| Open | Open |Closed| Open | Open | pins 1 & 2 |
| | | | | | | | closed |
|-----+------+------+------+------+------+------+------------|
|256KB|Closed|Closed| Open |Closed| Open |Closed| pins 2 & 3 |
| | | | | | | | closed |
|-----+------+------+------+------+------+------+------------|
|512KB|Closed|Closed|Closed|Closed|Closed|Closed| pins 1 & 2 |
| | | | | | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP7 | JP8 | JP32 |
|---------+------------------------+------------+------------|
| 80486SX | pins 2 & 3 closed | Open | pins 2 & 3 |
| | | | closed |
|---------+------------------------+------------+------------|
| 80487SX | pins 1 & 2, 3 & 4 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|---------+------------------------+------------+------------|
| 80486DX | pins 1 & 2, 3 & 4 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+