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# TMC RESEARCH CORPORATION
PET48PN
Processor 80486SX/80487SX/80486DX/ODP487SX/80486DX2
Processor 20/25/33/40(internal)/50(internal)/50/66(internal)MHz
Speed
Chip Set OPTI
Max. 128MB
Onboard
DRAM
SRAM Cache 64/128/256/512KB
BIOS AMI
Dimensions 220mm x 240mm
I/O 32-bit VESA card slot (2)
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------+-----------+-------------------+------------|
| IDE interface | J4 | Reset switch | J5 pins 9 |
| LED | | | and 19 |
|---------------+-----------+-------------------+------------|
| Speaker | J5 pins | IDE interface LED | J5 pins 10 |
| | 1-4 | | and 20 |
|---------------+-----------+-------------------+------------|
| Turbo switch | J5 pins 7 | 32-bit VESA card | S1 & S2 |
| | and 17 | (2) | |
|---------------+-----------+-------------------+------------|
| Turbo LED | J5 pins 8 | | |
| | and 18 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------------+--------+----------|
| » | Monitor type select color | JP5 | closed |
|---+------------------------------------+--------+----------|
| | Monitor type select monochrome | JP5 | open |
|---+------------------------------------+--------+----------|
| » | Channel ready select normal | JP7 | open |
|---+------------------------------------+--------+----------|
| | Channel ready select EXRDY signal | JP7 | closed |
| | generated | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank | Bank | Bank | Bank | RNE1-RNE5 | RNF1-RNF5 |
| | 0 | 1 | 2 | 3 | | |
|-------+-------+------+------+------+-----------+-----------|
| 4MB | (4) | NONE | NONE | NONE | closed | open |
| | 1M x | | | | | |
| | 9 | | | | | |
|-------+-------+------+------+------+-----------+-----------|
| 4MB | NONE | NONE | (1) | NONE | open | closed |
| | | | 1M x | | | |
| | | | 36 | | | |
|-------+-------+------+------+------+-----------+-----------|
| 8MB | (4) | (4) | NONE | NONE | closed | open |
| | 1M x | 1M x | | | | |
| | 9 | 9 | | | | |
|-------+-------+------+------+------+-----------+-----------|
| 8MB | NONE | NONE | (1) | (1) | open | closed |
| | | | 1M x | 1M x | | |
| | | | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 12MB | (4) | (4) | (1) | NONE | closed | open |
| | 1M x | 1M x | 1M x | | | |
| | 9 | 9 | 36 | | | |
|-------+-------+------+------+------+-----------+-----------|
| 12MB | (4) | NONE | (1) | (1) | open | closed |
| | 1M x | | 1M x | 1M x | | |
| | 9 | | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 16MB | (4) | (4) | (1) | (1) | closed | open |
| | 1M x | 1M x | 1M x | 1M x | | |
| | 9 | 9 | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 16MB | (4) | NONE | NONE | NONE | closed | open |
| | 4M x | | | | | |
| | 9 | | | | | |
|-------+-------+------+------+------+-----------+-----------|
| 16MB | NONE | NONE | NONE | NONE | closed | open |
|-------+-------+------+------+------+-----------+-----------|
| 20MB | (4) | (4) | (1) | NONE | open | closed |
| | 4M x | 1M x | 4M x | | | |
| | 9 | 9 | 36 | | | |
|-------+-------+------+------+------+-----------+-----------|
| 20MB | NONE | NONE | (1) | (1) | open | closed |
| | | | 4M x | 1M x | | |
| | | | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 24MB | (4) | (4) | (1) | NONE | closed | open |
| | 4M x | 1M x | 1M x | | | |
| | 9 | 9 | 36 | | | |
|-------+-------+------+------+------+-----------+-----------|
| 28MB | (4) | (4) | (1) | (1) | closed | open |
| | 4M x | 1M x | 1M x | 1M x | | |
| | 9 | 9 | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 32MB | (4) | (4) | NONE | NONE | closed | open |
| | 4M x | 4M x | | | | |
| | 9 | 9 | | | | |
|-------+-------+------+------+------+-----------+-----------|
| 32MB | NONE | NONE | (1) | (1) | open | closed |
| | | | 4M x | 4M x | | |
| | | | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 36MB | (4) | (4) | (1) | NONE | closed | open |
| | 4M x | 4M x | 1M x | | | |
| | 9 | 9 | 36 | | | |
|-------+-------+------+------+------+-----------+-----------|
| 36MB | (4) | NONE | (1) | (1) | open | closed |
| | 4M x | | 4M x | 4M x | | |
| | 9 | | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 40MB | (4) | (4) | (1) | (1) | closed | open |
| | 4M x | 4M x | 1M x | 1M x | | |
| | 9 | 9 | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 40MB | (4) | NONE | (1) | (1) | open | closed |
| | 4M x | | 1M x | 4M x | | |
| | 9 | | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 48MB | (4) | (4) | (1) | NONE | closed | open |
| | 4M x | 4M x | 4M x | | | |
| | 9 | 9 | 36 | | | |
|-------+-------+------+------+------+-----------+-----------|
| 48MB | (4) | NONE | (1) | (1) | open | closed |
| | 4M x | | 4M x | 4M x | | |
| | 9 | | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 52MB | (4) | (4) | (1) | (1) | closed | open |
| | 4M x | 1M x | 4M x | 4M x | | |
| | 9 | 9 | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 64MB | (4) | (4) | (1) | (1) | closed | open |
| | 4M x | 4M x | 4M x | 4M x | | |
| | 9 | 9 | 36 | 36 | | |
|-------+-------+------+------+------+-----------+-----------|
| 128MB | (4) | (4) | NONE | NONE | closed | open |
| | 16M x | 16M | | | | |
| | 9 | x 9 | | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM RESISTOR CONFIGURATION |
|------------------------------------------------------------|
| Size | RNA1/RNA2 | RNB1/RNB2 | RNC1/RNC2 | RND1/RND2 |
|--------+------------+------------+------------+------------|
| 64KB | closed | open | open | open |
|--------+------------+------------+------------+------------|
| 128KB | open | closed | open | open |
|--------+------------+------------+------------+------------|
| 256KB | open | open | closed | open |
|--------+------------+------------+------------+------------|
| 512KB | open | open | open | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Cache SRAM | Location | TAG(U43) | TAG(U44 & |
| | | | | U55) |
|-------+-------------+-----------+------------+-------------|
| 64KB | (8) 8K x 8 | Banks 0 & | (1) 8K x 8 | (2) 16K x 1 |
| | | 1 | | |
|-------+-------------+-----------+------------+-------------|
| 128KB | (4) 32K x 8 | Bank 0 | (1) 8K x 8 | (2) 16K x 1 |
|-------+-------------+-----------+------------+-------------|
| 256KB | (8) 32K x 8 | Banks 0 & | (1) 32K x | (2) 16K x 1 |
| | | 1 | 8 | |
|-------+-------------+-----------+------------+-------------|
| 512KB | (4) 128K x | Bank 0 | (1) 32K x | (2) 64K x 1 |
| | 8 | | 8 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU JUMPER CONFIGURATION |
|------------------------------------------------------------|
| CPU | RNA3 | RNB3 | RNC3 |
|---------------+--------------+--------------+--------------|
| 80486DX2 | closed | open | open |
|---------------+--------------+--------------+--------------|
| ODP486SX | open | closed | open |
|---------------+--------------+--------------+--------------|
| 80486DX | closed | open | open |
|---------------+--------------+--------------+--------------|
| 80487SX | open | closed | open |
|---------------+--------------+--------------+--------------|
| 80486SX | open | open | closed |
+------------------------------------------------------------+
+---------------------------------------------------------------------+
| CPU SPEED JUMPER CONFIGURATION |
|---------------------------------------------------------------------|
| CPU |JP2|JP3|JP4| JP8 | JP9 | W7 | W8 | W9 | W10 |
|---------------+---+---+---+------+------+------+------+------+------|
| 20MHz |1 &|1 &|2 &| open | open | open |closed| open | open |
| | 2 | 2 | 3 | | | | | | |
|---------------+---+---+---+------+------+------+------+------+------|
| 25MHz |1 &|1 &|2 &| open | open | open | open |closed| open |
| | 2 | 2 | 3 | | | | | | |
|---------------+---+---+---+------+------+------+------+------+------|
| 33MHz |1 &|2 &|2 &| open | open |closed| open | open | open |
| | 2 | 3 | 3 | | | | | | |
|---------------+---+---+---+------+------+------+------+------+------|
|40(internal)MHz|1 &|1 &|2 &| open | open | open |closed| open | open |
| | 2 | 2 | 3 | | | | | | |
|---------------+---+---+---+------+------+------+------+------+------|
|50(internal)MHz|1 &|1 &|2 &| open | open | open | open |closed| open |
| | 2 | 2 | 3 | | | | | | |
|---------------+---+---+---+------+------+------+------+------+------|
| 50MHz |2 &|2 &|1 &|closed|closed| open | open |closed| open |
| | 3 | 3 | 2 | | | | | | |
|---------------+---+---+---+------+------+------+------+------+------|
|66(internal)MHz|1 &|2 &|2 &| open | open | open | open | open |closed|
| | 2 | 3 | 3 | | | | | | |
|---------------------------------------------------------------------|
|Note:JP8 and JP9 are VESA bus speed select. W7 - W10 are clock source|
|jumpers. |
+---------------------------------------------------------------------+