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# INTERCOMP, INC.
486ISA
Processor 80486SX/80487SX/80486DX
Processor Speed 20/25/33/50MHz
Chip Set Intercomp
Max. Onboard DRAM 32MB
SRAM Cache 64/256KB
BIOS AMI/MR
Dimensions 330mm x 218mm
I/O Options None
NPU Options 4167
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| External battery | J10 | Reset switch | JP33 |
|---------------------+----------+----------------+----------|
| Turbo LED | JP12 | Diagnostic LED | JP101 |
|---------------------+----------+----------------+----------|
| Speaker | JP24 | Turbo switch | SW2 |
|---------------------+----------+----------------+----------|
| Power LED & keylock | JP25 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select color (AMI | JP1 | Closed |
| | BIOS) | | |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP1 | Open |
| | (AMI BIOS) | | |
|---+----------------------------------+--------+------------|
| » | Password disabled (MR BIOS) | JP1 | Open |
|---+----------------------------------+--------+------------|
| | Password enabled (MR BIOS) | JP1 | Closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Battery select internal | JP345 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery select external | JP345 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 64KB | (8) 8K x 8 |
|----------------------------+-------------------------------|
| 256KB | (8) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP8 | JP9 | JP10 | JP11 |
|-----------+------------+------------+----------+-----------|
| 64KB | Open | Open | Open | Open |
|-----------+------------+------------+----------+-----------|
| 256KB | Closed | Closed | Open | Closed |
+------------------------------------------------------------+