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# CHAINTECH COMPUTER COMPANY, LTD.
4ULD.1
Processor 80486SX/SL80486SX/UMCU5S/CX486M7/AM486DXL/80486DX/SL80486DX/
AM486DXL2/80486DX2/SL80486DX/80486DX4/P24D/Pentium Overdrive
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed 100(internal)MHz
Chip Set UMC
Max. 64MB
Onboard
DRAM
Cache 128/256KB
BIOS Award
Dimensions 250mm x 220mm
I/O 32-bit VESA local bus slots (3), green PC connector
Options
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Power LED & | JP1 | Green PC | JP20 |
| keylock | | connector | |
|-------------------+----------+------------------+----------|
| Green PC | JP2 | Reset switch | JP21 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Green PC | JP3 | Speaker | JP23 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Green PC | JP4 | Turbo LED | JP26 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Green PC | JP5 | Green PC LED | JP33 |
| connector | | | |
|-------------------+----------+------------------+----------|
| External battery | JP8 | 32-bit VESA | SL1 - |
| | | local bus slots | SL3 |
|-------------------+----------+------------------+----------|
| Turbo switch | JP16 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------------+--------+----------------|
| » | Battery type select internal | JP8 | pins 2 & 3 |
| | | | closed |
|---+------------------------------+--------+----------------|
| | CMOS memory clear | JP8 | pins 3 & 4 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 256K x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 1MB | NONE | (1) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 2MB | (4) 256K x 9 | (1) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 2MB | NONE | (1) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 2MB | NONE | (1) 256K x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 3MB | (4) 256K x 9 | (1) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 3MB | NONE | (1) 512K x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 3MB | NONE | (1) 256K x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 4MB | (4) 1M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 4MB | NONE | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 4MB | NONE | (1) 512K x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 5MB | (4) 1M x 9 | (1) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 5MB | (4) 256K x 9 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 5MB | NONE | (1) 1M x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 5MB | NONE | (1) 256K x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 6MB | (4) 1M x 9 | (1) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 6MB | NONE | (1) 1M x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 6MB | NONE | (1) 512K x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 8MB | (4) 1M x 9 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 8MB | NONE | (1) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 8MB | NONE | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 9MB | (4) 256K x 9 | (1) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 9MB | NONE | (1) 2M x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 9MB | NONE | (1) 256K x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 10MB | NONE | (1) 2M x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 10MB | NONE | (1) 512K x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 12MB | (4) 1M x 9 | (1) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 12MB | NONE | (1) 2M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 12MB | NONE | (1) 1M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 16MB | (4) 4M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 16MB | NONE | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 16MB | NONE | (1) 2M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 17MB | (4) 4M x 9 | (1) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 17MB | (4) 256K x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 17MB | NONE | (1) 4M x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 17MB | NONE | (1) 256K x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 18MB | (4) 4M x 9 | (1) 512K x 36 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 18MB | NONE | (1) 4M x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 18MB | NONE | (1) 512K x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | (4) 4M x 9 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 20MB | (4) 1M x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 20MB | NONE | (1) 4M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | NONE | (1) 1M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 24MB | (4) 4M x 9 | (1) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 24MB | NONE | (1) 4M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 24MB | NONE | (1) 2M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (4) 8M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 32MB | (4) 4M x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 32MB | NONE | (1) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 32MB | NONE | (1) 4M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 33MB | (4) 8M x 9 | (1) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 33MB | (4) 256K x 9 | (1) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 33MB | NONE | (1) 8M x 36 | (1) 256K x 36 |
|------------+---------------+---------------+---------------|
| 33MB | NONE | (1) 256K x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 34MB | (4) 8M x 9 | (1) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 34MB | NONE | (1) 8M x 36 | (1) 512K x 36 |
|------------+---------------+---------------+---------------|
| 34MB | NONE | (1) 512K x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 36MB | (4) 8M x 9 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 36MB | (4) 1M x 9 | (1) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 36MB | NONE | (1) 8M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 36MB | NONE | (1) 1M x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 40MB | (4) 8M x 9 | (1) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 40MB | NONE | (1) 8M x 36 | (1) 2M x 36 |
|------------+---------------+---------------+---------------|
| 40MB | NONE | (1) 2M x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | (4) 8M x 9 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 48MB | (4) 4M x 9 | (1) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 48MB | NONE | (1) 8M x 36 | (1) 4M x 36 |
|------------+---------------+---------------+---------------|
| 48MB | NONE | (1) 4M x 36 | (1) 8M x 36 |
|------------+---------------+---------------+---------------|
| 64MB | (4) 16M x 9 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 64MB | (4) 8M x 9 | (1) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 64MB | NONE | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-----------+-------------+-------------+--------------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|-----------+-------------+-------------+--------------------|
| 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 16K or (1) 32K |
| | | | x 8 |
|-----------+-------------+-------------+--------------------|
| 256KB (B) | (4) 64K x 8 | NONE | (1) 16K or (1) 32K |
| | | | x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP13 | JP14 | JP15 |
|-----------+----------------+---------------+---------------|
| 128KB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 256KB (A) | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 256KB (B) | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JS1 | JS2 | JS3 | JS4 | JS5 |
|-------------------+--------+-------+-------+-------+-------|
| 80486SX | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| SL80486SX | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| UMCU5S | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| CX486M7 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 |
|-------------------+--------+-------+-------+-------+-------|
| AM486DXL | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| 80486DX | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| SL80486DX | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| AM486DXL2 | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| 80486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| SL80486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| P24D | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| 80486DX4 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| Pentium Overdrive | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JS6 | JS7 | JS8 | JS9 | JS10 |
|-------------------+--------+-------+-------+-------+-------|
| 80486SX | 1 & 2 | 1 & 2 | 3 & 4 | 1 & 2 | 2 & 3 |
|-------------------+--------+-------+-------+-------+-------|
| SL80486SX | 1 & 2 | 1 & 2 | 3 & 4 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| UMCU5S | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|-------------------+--------+-------+-------+-------+-------|
| CX486M7 | 3 & 4 | 3 & 4 | 1 & 2 | 3 & 4 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| AM486DXL | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|-------------------+--------+-------+-------+-------+-------|
| 80486DX | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|-------------------+--------+-------+-------+-------+-------|
| SL80486DX | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| AM486DXL2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|-------------------+--------+-------+-------+-------+-------|
| 80486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & 3 |
|-------------------+--------+-------+-------+-------+-------|
| SL80486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| P24D | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| 80486DX4 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-------------------+--------+-------+-------+-------+-------|
| Pentium Overdrive | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JS11 | JS12 | JS13 | JS14 |
|------------+-----------+-----------+-----------+-----------|
| 80486SX | pins 3 & | pins 3 & | pins 3 & | pins 3 & |
| | 4 closed | 4 closed | 4 closed | 4 closed |
|------------+-----------+-----------+-----------+-----------|
| SL80486SX | pins 1 & | pins 1 & | pins 1 & | pins 1 & |
| | 2 closed | 2 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| UMCU5S | pins 3 & | pins 2 & | pins 3 & | pins 2 & |
| | 4 closed | 3 closed | 4 closed | 3 closed |
|------------+-----------+-----------+-----------+-----------|
| CX486M7 | pins 2 & | pins 1 & | pins 2 & | pins 3 & |
| | 3 closed | 2 closed | 3 closed | 4 closed |
|------------+-----------+-----------+-----------+-----------|
| AM486DXL | pins 3 & | pins 2 & | pins 3 & | pins 2 & |
| | 4 closed | 3 closed | 4 closed | 3 closed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX | pins 3 & | pins 3 & | pins 3 & | pins 3 & |
| | 4 closed | 4 closed | 4 closed | 4 closed |
|------------+-----------+-----------+-----------+-----------|
| SL80486DX | pins 1 & | pins 1 & | pins 1 & | pins 1 & |
| | 2 closed | 2 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| AM486DXL2 | pins 3 & | pins 2 & | pins 3 & | pins 2 & |
| | 4 closed | 3 closed | 4 closed | 3 closed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX2 | pins 3 & | pins 3 & | pins 3 & | pins 3 & |
| | 4 closed | 4 closed | 4 closed | 4 closed |
|------------+-----------+-----------+-----------+-----------|
| SL80486DX2 | pins 1 & | pins 1 & | pins 1 & | pins 1 & |
| | 2 closed | 2 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| P24D | pins 1 & | pins 1 & | pins 1 & | pins 1 & |
| | 2 closed | 2 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX4 | pins 1 & | pins 1 & | pins 1 & | pins 1 & |
| | 2 closed | 2 closed | 2 closed | 2 closed |
|------------+-----------+-----------+-----------+-----------|
| Pentium | pins 1 & | pins 1 & | pins 1 & | pins 1 & |
| Overdrive | 2 closed | 2 closed | 2 closed | 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (MX8315/UM9515) |
|------------------------------------------------------------|
| Speed | JP17 | JP18 | JP19 |
|---------------+--------------+--------------+--------------|
| 25MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 50iMHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Closed | Open |
|---------------+--------------+--------------+--------------|
| 66iMHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 75iMHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 80iMHz | Closed | Open | Closed |
|---------------+--------------+--------------+--------------|
| 100iMHz | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (IMIS466) |
|------------------------------------------------------------|
| Speed | JP17 | JP18 | JP19 |
|---------------+---------------+---------------+------------|
| 25MHz | Open | Open | Open |
|---------------+---------------+---------------+------------|
| 33MHz | Closed | Closed | Open |
|---------------+---------------+---------------+------------|
| 40MHz | Closed | Open | Open |
|---------------+---------------+---------------+------------|
| 50iMHz | Open | Open | Open |
|---------------+---------------+---------------+------------|
| 50MHz | Open | Closed | Open |
|---------------+---------------+---------------+------------|
| 66iMHz | Closed | Closed | Open |
|---------------+---------------+---------------+------------|
| 75iMHz | Open | Open | Open |
|---------------+---------------+---------------+------------|
| 80iMHz | Closed | Open | Open |
|---------------+---------------+---------------+------------|
| 100iMHz | Closed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (80486DX4 ONLY) |
|------------------------------------------------------------|
| Speed | JP25 |
|----------------------------+-------------------------------|
| 2x | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 3x | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP10 | JP11 | JP12 |
|---------+----------------+----------------+----------------|
| 3.3v | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 5v | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP24 |
|-------------------------------+----------------------------|
| 0 wait states | Open |
|-------------------------------+----------------------------|
| 1 wait state | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VL BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP22 |
|-------------------------------+----------------------------|
| <= 33MHz | Open |
|-------------------------------+----------------------------|
| > 33MHz | Closed |
+------------------------------------------------------------+