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# TMC RESEARCH CORPORATION
PAT38PM
Processor 80386DX/CX486DLC
Processor Speed 33/40MHz
Chip Set OPTI
Max. Onboard DRAM 32MB
SRAM Cache 64/128/256KB
BIOS AMI
Dimensions 254mm x 220mm
I/O Options None
NPU Options 80387/CX83D87
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+------------+-----------------+-------------|
| External | J1 | Reset switch | J20/pins 9 |
| battery | | | & 19 |
|---------------+------------+-----------------+-------------|
| Speaker | J20/pins | IDE interface | J20/pins 10 |
| | 1-4 | LED | & 20 |
|---------------+------------+-----------------+-------------|
| Turbo switch | J20/pins 7 | IDE interface | J21 |
| | & 17 | LED | |
|---------------+------------+-----------------+-------------|
| Turbo LED | J20/pins 8 | | |
| | & 18 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| | AT bus clock select CPU/4 (CPU | JP2 | open |
| | 33MHz) | | |
|---+----------------------------------+--------+------------|
| | AT bus clock select CPU/5 (CPU | JP2 | closed |
| | 40MHz) | | |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP3 | pins 1 & 2 |
| | (internal battery) | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory normal operation | JP3 | open |
| | (external battery) | | |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | JP4 | closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP4 | open |
|---+----------------------------------+--------+------------|
| » | NPU synchronous with CPU | JP20 | open |
|---+----------------------------------+--------+------------|
| | NPU synchronous with oscillator | JP20 | closed |
| | installed at OSC1 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache | Location | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (8) 8K x 8 | Banks 0 & 1 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (8) 32K x 8 | Banks 0 & 1 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Resistor | 64KB | 128KB | 256KB |
|---------------+--------------+--------------+--------------|
| RND | closed | open | open |
|---------------+--------------+--------------+--------------|
| RNE | open | closed | open |
|---------------+--------------+--------------+--------------|
| RNF | open | open | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU RESISTTOR NETWORK CONFIGURATION |
|------------------------------------------------------------|
| CPU(PQFP) | CPU(PGA) | JP19 | RNA | RNB |
|------------+------------+-----------+-----------+----------|
| 80386DX | CX486DLC | closed | open | closed |
|------------+------------+-----------+-----------+----------|
| NONE | CX486DLC | N/A | open | closed |
|------------+------------+-----------+-----------+----------|
| 80386DX | 80386DX | closed | closed | open |
|------------+------------+-----------+-----------+----------|
| NONE | 80386DX | N/A | closed | open |
|------------+------------+-----------+-----------+----------|
| 80386DX | NONE | open | closed | open |
|------------------------------------------------------------|
| Note:The CPUs in bold-italic are the active CPUs. |
+------------------------------------------------------------+