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# INTERCOMP, INC.
ILC VL3/486
Processor 80386DX/CX486DLC/80486SX/80486DX/80486DX2
Processor Speed 16/20/25/33/40/50/66(Internal)MHz
Chip Set Intercomp
Max. onboard DRAM 128MB
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options 32-bit VESA local bus slots (2)
NPU Options 80387DX
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+-------------------+----------|
| External battery | P1 | Turbo LED | P16 |
|------------------+----------+-------------------+----------|
| Speaker | P13 | Turbo switch | P17 |
|------------------+----------+-------------------+----------|
| Power LED & | P14 | 32-bit VESA local | S1 |
| keylock | | bus slot | |
|------------------+----------+-------------------+----------|
| Reset switch | P15 | 32-bit VESA local | S2 |
| | | bus slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-----------------------------------+--------+---------------|
| » | CMOS memory normal operation | P2 | pins 2 & 3 |
| | (Internal Battery) | | closed |
|---+-------------------------------+--------+---------------|
| | CMOS memory normal operation | P2 | pins 1 & 2 |
| | (External Battery) | | closed |
|---+-------------------------------+--------+---------------|
| | CMOS memory clear | P2 | pins 3 & 4 |
| | | | closed |
|---+-------------------------------+--------+---------------|
| » | 80486/50MHz CPU enabled | P3 | Closed |
|---+-------------------------------+--------+---------------|
| | 80486/50Mhz CPU disabled | P3 | Open |
|---+-------------------------------+--------+---------------|
| » | Factory configured do not | P4 | Open |
| | alter | | |
|---+-------------------------------+--------+---------------|
| » | Bus type select VESA | P7 | pins 1 & 2, 3 |
| | | | & 4 open |
|---+-------------------------------+--------+---------------|
| | Bus type select ISA | P7 | pins 1 & 2, 3 |
| | | | & 4 closed |
|---+-------------------------------+--------+---------------|
| » | VESA local bus enabled | P10 | pins 1 & 2 |
| | | | closed |
|---+-------------------------------+--------+---------------|
| | VESA local bus disabled | P10 | pins 2 & 3 |
| | | | closed |
|---+-------------------------------+--------+---------------|
| » | Factory configured do not | P12 | pins 3 & 6 |
| | alter | | closed |
|---+-------------------------------+--------+---------------|
| » | NPU disabled | P20 | pins 2 & 3 |
| | | | closed |
|---+-------------------------------+--------+---------------|
| | NPU enabled | P20 | 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 |
|---------------+----------------------+---------------------|
| 5MB | (4) 256K x 9 | (4) 1M x 9 |
|---------------+----------------------+---------------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 |
|---------------+----------------------+---------------------|
| 16MB | (4) 4M x 9 | NONE |
|---------------+----------------------+---------------------|
| 17MB | (4) 256K x 9 | (4) 4M x 9 |
|---------------+----------------------+---------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|---------------+----------------------+---------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
|---------------+----------------------+---------------------|
| 64MB | (4) 16M x 9 | NONE |
|---------------+----------------------+---------------------|
| 65MB | (4) 256K x 9 | (4) 16M x 9 |
|---------------+----------------------+---------------------|
| 68MB | (4) 1M x 9 | (4) 16M x 9 |
|---------------+----------------------+---------------------|
| 80MB | (4) 4M x 9 | (4) 16M x 9 |
|---------------+----------------------+---------------------|
| 128MB | (4) 16M x 9 | (4) 16M x 9 |
|------------------------------------------------------------|
| Note: If SIMMs on bank 0 are not present SIMMs located on |
| bank 1 will be automatically re-mapped to Bank O. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | Location | TAG | Dirty bit |
| | | | | U38 |
|-------+-------------+-----------+------------+-------------|
| 64KB | (8) 8K x 8 | Banks 0 & | (1) 8K x 8 | (1) 16K x 4 |
| | | 1 | | |
|-------+-------------+-----------+------------+-------------|
| 128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 | (1) 16K x 4 |
|-------+-------------+-----------+------------+-------------|
| 256KB | (8) 32K x 8 | Banks 0 & | (1) 32K x | (1) 16K x 4 |
| | | 1 | 8 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| CACHE | Main Memory | P5 | P6 |
| Size | | | |
|-------+-------------+--------------------+-----------------|
| 64KB | £ 16MB | pins 1 & 2, 4 & 5, | pins 1 & 2, 4 & |
| | | 7 & 8 closed | 5 closed |
|-------+-------------+--------------------+-----------------|
| 64KB | > 16MB, £ | pins 1 & 2, 4 & 5, | pins 1 & 2, 4 & |
| | =32MB | 7 & 8 closed | 5 closed |
|-------+-------------+--------------------+-----------------|
| 128KB | £ 32MB | pins 2 & 3, 4 & 5, | pins 2 & 3, 4 & |
| | | 8 & 9 closed | 5 closed |
|-------+-------------+--------------------+-----------------|
| 128KB | > 32MB, £ | pins 2 & 3, 4 & 5, | pins 2 & 3, 4 & |
| | =64MB | 7 & 8 closed | 5 closed |
|-------+-------------+--------------------+-----------------|
| 256KB | £ 32MB | pins 2 & 3, 5 & 6, | pins 2 & 3, 5 & |
| | | 8 & 9 closed | 6 closed |
|-------+-------------+--------------------+-----------------|
| 256KB | > 32MB, £ | pins 2 & 3, 5 & 6, | pins 2 & 3, 5 & |
| | =64MB | 7 & 8 closed | 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | P3 | P19 |
|------------------+--------+--------------------------------|
| 80386DX/16/20/25 | Open | pins 1 & 5, 2 & 6, 4 & 8 |
| | | closed |
|------------------+--------+--------------------------------|
| 80386DX/33 | Open | pins 1 & 5, 3 & 7, 4 & 8 |
| | | closed |
|------------------+--------+--------------------------------|
| CX486DLC/40 | Open | pins 1 & 5, 2 & 6 closed |
|------------------+--------+--------------------------------|
| 80486SX/20 | Open | pins 2 & 6, 3 & 7 closed |
|------------------+--------+--------------------------------|
| 80486SX/25 | Open | pins 2 & 6, 4 & 8 closed |
|------------------+--------+--------------------------------|
| 80486DX25 | Open | pins 2 & 6, 4 & 8 closed |
|------------------+--------+--------------------------------|
| 80486DX33 | Open | pins 3 & 7, 4 & 8 closed |
|------------------+--------+--------------------------------|
| 80486DX50 | Closed | pins 3 & 7 closed |
|------------------+--------+--------------------------------|
| 80486DX2/66 | Open | pins 3 & 7, 4 & 8 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| CPU | P10 | P11 | P18 | P21 |
|----------+------------------+------------+--------+--------|
| 80386DX | pins 2 & 3 | Open | Open | Closed |
| | closed | | | |
|----------+------------------+------------+--------+--------|
| 80486SX | pins 1 & 2 | pins 1 & 2 | Closed | Open |
| | closed | closed | | |
|----------+------------------+------------+--------+--------|
| 80486DX | pins 1 & 2 | pins 2 & 3 | Closed | Open |
| | closed | closed | | |
|----------+------------------+------------+--------+--------|
| 80486DX2 | pins 1 & 2 | pins 2 & 3 | Closed | Open |
| | closed | closed | | |
+------------------------------------------------------------+