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# INTERNATIONAL INSTRUMENTATION, INC.
OEM1/L-ISA
Processor 80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed 16/20/25/33/50(internal)/50/66(internal)MHz
Chip Set Advanced
Max. Onboard DRAM 128MB
Cache 64/128/256KB
BIOS AMI
Dimensions 254mm x 218mm
I/O Options 32-bit local bus slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------+----------+-----------------------+----------|
| Turbo switch | H1 | Power LED & keylock | H5 |
|--------------+----------+-----------------------+----------|
| Turbo LED | H2 | External battery | JP1 |
|--------------+----------+-----------------------+----------|
| Reset switch | H3 | 32-bit local bus slot | S1 |
|--------------+----------+-----------------------+----------|
| Speaker | H4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+---------+-----------|
| ยป | Monitor type select color | JP12 | Open |
|---+----------------------------------+---------+-----------|
| | Monitor type select monochrome | JP12 | 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 |
|------------------+--------------------+--------------------|
| 20MB | (4) 1M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 64MB | (4) 16M x 9 | NONE |
|------------------+--------------------+--------------------|
| 80MB | (4) 16M x 9 | (4) 4M x 9 |
|------------------+--------------------+--------------------|
| 128MB | (4) 16M x 9 | (4) 16M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG (U34) |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP2 | JP3 |
|-------------------+--------------------+-------------------|
| 64KB | Open | Open |
|-------------------+--------------------+-------------------|
| 128KB | pins 2 & 3 closed | Closed |
|-------------------+--------------------+-------------------|
| 256KB | pins 1 & 2 closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Type | J4 | J5 | J7 | J8 |
|----------+--------------------+------------+--------+------|
| 80486SX | pins 2 & 3 closed | Open | Closed | Open |
|----------+--------------------+------------+--------+------|
| ODP486SX | pins 1 & 2, 3 & 4 | pins 1 & 2 | Closed | Open |
| | closed | closed | | |
|----------+--------------------+------------+--------+------|
| 80487SX | pins 1 & 2, 3 & 4 | pins 1 & 2 | Closed | Open |
| | closed | closed | | |
|----------+--------------------+------------+--------+------|
| 80486DX | pins 1 & 2, 3 & 4 | pins 1 & 2 | Closed | Open |
| | closed | closed | | |
|----------+--------------------+------------+--------+------|
| 80486DX2 | pins 1 & 2, 3 & 4 | pins 1 & 2 | Closed | Open |
| | closed | closed | | |
+------------------------------------------------------------+