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# RELIALOGIC CORPORATION PRIVATE, LTD.
UM4980
Processor CX486S/SL80486SX/80486SX/SL80486SX2/80486SX2/CX486DX/AM486DX/
U5S/SL80486DX/80486DX/AM486DX2/CX486DX2/SL80486DX2/80486DX2/
AM486DX4/80486DX4
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set UMC
Max. 64MB
Onboard
DRAM
Cache 128/256/512/1024KB
BIOS Phoenix
Dimensions 254mm x 218mm
I/O 32-bit VESA local bus slots (3)
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+------------------+-----------|
| External battery | J2 | Power LED & | J90 pins |
| | | keylock | 11 - 15 |
|------------------+----------+------------------+-----------|
| Turbo LED | J90 pins | Speaker | J90 pins |
| | 2 - 3 | | 17 - 20 |
|------------------+----------+------------------+-----------|
| Green PC | J90 pins | Daughter board | JP90 |
| connector | 4 - 5 | connector | |
|------------------+----------+------------------+-----------|
| Turbo switch | J90 pins | 32-bit VESA | SL1 - SL3 |
| | 6 - 7 | local bus slots | |
|------------------+----------+------------------+-----------|
| Reset switch | J90 pins | | |
| | 9 - 10 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-----------------------------------+--------+---------------|
| » | Flash BIOS voltage select 5v | JP1 | pins 1 & 2 |
| | | | closed |
|---+-------------------------------+--------+---------------|
| | Flash BIOS voltage select 12v | JP1 | pins 2 & 3 |
| | | | closed |
|---+-------------------------------+--------+---------------|
| » | Keyboard type select external | JP3 | Open |
|---+-------------------------------+--------+---------------|
| | Keyboard type select internal | JP3 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 2MB | NONE | NONE | NONE | (1) 512K x |
| | | | | 36 |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 256K x | (1) 256K x | (1) 256K x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | NONE | NONE | (1) 512K x | (1) 512K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | NONE | NONE | NONE | (1) 2M x |
| | | | | 36 |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 13MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | NONE | NONE | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 4M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 25MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 37MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+-----------+----------+----------+-----------------|
| 48MB | (1) 4M x | (1) 4M x | (1) 4M x | NONE |
| | 36 | 36 | 36 | |
|--------+-----------+----------+----------+-----------------|
| 49MB | (1) 4M x | (1) 4M x | (1) 4M x | (1) 256K x 36 |
| | 36 | 36 | 36 | |
|--------+-----------+----------+----------+-----------------|
| 52MB | (1) 4M x | (1) 4M x | (1) 4M x | (1) 1M x 36 |
| | 36 | 36 | 36 | |
|--------+-----------+----------+----------+-----------------|
| 64MB | (1) 4M x | (1) 4M x | (1) 4M x | (1) 4M x 36 |
| | 36 | 36 | 36 | |
|------------------------------------------------------------|
| Note: If 8042 keyboard controller is not installed, |
| maximum memory is 32MB. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 64K x 8 | NONE | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 64K x 8 | (4) 64K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 64K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP4 | JP5 | JP6 | JP10 | JP11 | JP12 | JP13 |
|-------+-----+-----+------+------+--------+--------+--------|
| 128KB | 1 & | 1 & | Open | Open | Open | Open | Open |
| | 2 | 2 | | | | | |
|-------+-----+-----+------+------+--------+--------+--------|
| 256KB | 1 & | 1 & | 1 & | Open | Open | Open | Closed |
| | 2 | 2 | 2 | | | | |
|-------+-----+-----+------+------+--------+--------+--------|
| 256KB | 2 & | 2 & | Open | Open | Open | Open | Closed |
| | 3 | 3 | | | | | |
|-------+-----+-----+------+------+--------+--------+--------|
| 512KB | 2 & | 2 & | 2 & | Open | Closed | Open | Closed |
| | 3 | 3 | 3 | | | | |
|-------+-----+-----+------+------+--------+--------+--------|
| 512KB | 1 & | 2 & | 2 & | 1 & | Closed | Open | Closed |
| | 2 | 3 | 3 | 2 | | | |
|-------+-----+-----+------+------+--------+--------+--------|
| 1MB | 2 & | 2 & | 2 & | 2 & | Closed | Closed | Closed |
| | 3 | 3 | 3 | 3 | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP14 | JP15 | JP16 |
|----------------+---------------+---------------+-----------|
| CX486S | 2 & 3, 4 & 5 | 2 & 3 | Open |
|----------------+---------------+---------------+-----------|
| SL80486SX | 1 & 2, 3 & 4 | 2 & 3 | Open |
|----------------+---------------+---------------+-----------|
| 80486SX | Open | 2 & 3 | Open |
|----------------+---------------+---------------+-----------|
| SL80486SX2 | 1 & 2, 3 & 4 | 2 & 3 | Open |
|----------------+---------------+---------------+-----------|
| 80486SX2 | Open | 2 & 3 | Open |
|----------------+---------------+---------------+-----------|
| CX486DX | 2 & 3 | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| AM486DX | Open | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| U5S | Open | 2 & 3 | 3 & 4 |
|----------------+---------------+---------------+-----------|
| SL80486DX | 1 & 2, 3 & 4 | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| 80486DX | Open | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| AM486DX2 | Open | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| CX486DX2 | 2 & 3 | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| SL80486DX2 | 1 & 2, 3 & 4 | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| 80486DX2 | Open | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| 80486DX2 (WB) | 1 & 2, 3 & 4 | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| AM486DX4 | Open | 1 & 2, 3 & 4 | 1 & 2 |
|----------------+---------------+---------------+-----------|
| 80486DX4 | 1 & 2, 3 & 4 | 1 & 2, 3 & 4 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP17 | JP18 | JP19 |
|---------------+--------------+--------------+--------------|
| CX486S | 2 & 3, 4 & 5 | 1 & 2, 3 & | 1 & 2, 3 & |
| | | 4, 5 & 6 | 4, 5 & 6 |
|---------------+--------------+--------------+--------------|
| SL80486SX | 5 & 6 | 1 & 2 | 1 & 2 |
|---------------+--------------+--------------+--------------|
| 80486SX | Open | 2 & 3 | Open |
|---------------+--------------+--------------+--------------|
| SL80486SX2 | 5 & 6 | 1 & 2 | 1 & 2 |
|---------------+--------------+--------------+--------------|
| 80486SX2 | Open | 2 & 3 | Open |
|---------------+--------------+--------------+--------------|
| CX486DX | 2 & 3, 4 & 5 | 1 & 2, 3 & | 1 & 2, 3 & 4 |
| | | 4, 5 & 6 | |
|---------------+--------------+--------------+--------------|
| AM486DX | Open | 2 & 3 | Open |
|---------------+--------------+--------------+--------------|
| U5S | 1 & 2 | 2 & 3 | 2 & 3 |
|---------------+--------------+--------------+--------------|
| SL80486DX | 5 & 6 | 1 & 2 | 1 & 2 |
|---------------+--------------+--------------+--------------|
| 80486DX | Open | 2 & 3 | Open |
|---------------+--------------+--------------+--------------|
| AM486DX2 | Open | 2 & 3 | Open |
|---------------+--------------+--------------+--------------|
| CX486DX2 | 2 & 3, 4 & 5 | 1 & 2, 3 & | 1 & 2, 3 & 4 |
| | | 4, 5 & 6 | |
|---------------+--------------+--------------+--------------|
| SL80486DX2 | 5 & 6 | 1 & 2 | 1 & 2 |
|---------------+--------------+--------------+--------------|
| 80486DX2 | Open | 2 & 3 | Open |
|---------------+--------------+--------------+--------------|
| 80486DX2 (WB) | 3 & 4, 5 & 6 | 1 & 2, 4 & 5 | 1 & 2, 4 & 5 |
|---------------+--------------+--------------+--------------|
| AM486DX4 | Open | 2 & 3 | Open |
|---------------+--------------+--------------+--------------|
| 80486DX4 | 5 & 6 | 1 & 2 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP7 | JP8 | JP9 |
|---------------+--------------+--------------+--------------|
| 25MHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 33MHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 40MHz | Closed | Closed | Open |
|---------------+--------------+--------------+--------------|
| 50iMHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 50MHz | Open | Open | Closed |
|---------------+--------------+--------------+--------------|
| 66iMHz | Closed | Closed | Closed |
|---------------+--------------+--------------+--------------|
| 75iMHz | Closed | Open | Open |
|---------------+--------------+--------------+--------------|
| 100iMHz | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (80486DX4 ONLY) |
|------------------------------------------------------------|
| Speed | JP24 |
|----------------------------+-------------------------------|
| 2x | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 3x | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (AM486DX4 ONLY) |
|------------------------------------------------------------|
| Speed | JP400 |
|------------------------------+-----------------------------|
| 2x | Closed |
|------------------------------+-----------------------------|
| 3x | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP26 |
|-------------------------------+----------------------------|
| 0 wait states | Open |
|-------------------------------+----------------------------|
| 1 wait state | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP25 |
|-------------------------------+----------------------------|
| <= 33MHz | Open |
|-------------------------------+----------------------------|
| > 33MHz | Closed |
+------------------------------------------------------------+