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# ATC/UNITRON COMPUTER & COMPUTER PARTS
U 6923
Processor (SL)AM486SX/80486SX/SL80486SX/UMC486/CXM7/AM486DX/(SL)AM486DX/80486DX/SL80486DX/AM486DX2/(SL)AM486DX2/80486DX2/SL80486DX2/
AM486DX4/(SL)AM486DX4/80486DX4/SL80486DX4/CXM9/P24D/ Pentium Overdrive
Processor 25/33/40/50(internal)/50/66(internal)/80(internal)/100(internal)/ 120(internal)MHz
Speed
Chip Set SIS
Max. 128MB
Onboard
DRAM
Cache 128/256/512KB
BIOS Award
Dimensions 220mm x 220mm
I/O 32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
Options
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Parallel port | CN1 | Green PC | JP35 |
| | | connector | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN2 | Green PC | JP36 |
| | | connector | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN3 | Turbo LED | JP37 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN4 | Reset switch | JP38 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN5 | Turbo switch | JP39 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN6 | Power LED & | JP40 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| External battery | JP1 | Green PC LED | LED1 |
|-------------------+----------+------------------+----------|
| Speaker | JP27 | 32-bit PCI slots | PC1 - |
| | | | PC3 |
|-------------------+----------+------------------+----------|
| IDE interface LED | JP33 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select color | JP6 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome | JP6 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP13 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | DREQ select DREQ1 | JP18 | pins 1 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | DREQ select DREQ3 | JP18 | pins 2 & 4 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | BIOS type select EPROM | JP19 | Open |
|---+----------------------------------+--------+------------|
| | BIOS type select 5v flash | JP19 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | BIOS type select 12v flash | JP19 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | DACK select DACK1 | JP22 | pins 1 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | DACK select DACK3 | JP22 | pins 2 & 4 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Turbo enabled | JP39 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Turbo disabled | JP39 | pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 512K x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 512K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 256K x | (1) 256K x | (1) 256K x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 256K x | (1) 512K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 512K x | (1) 256K x | (1) 256K x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 512K x | (1) 512K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 512K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 256K x | (1) 512K x | (1) 512K x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 256K x | (1) 1M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 512K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 512K x | (1) 512K x | (1) 512K x | NONE |
| | 36 | 36 | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 512K x | (1) 1M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 256K x | (1) 512K x | (1) 512K x | (1) 512K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 512K x | (1) 512K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 512K x | (1) 512K x | (1) 512K x | (1) 512K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 2M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 256K x | (1) 2M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 2M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 2M x 36 | (1) 512K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 1M x 36 | (1) 512K x | (1) 512K x | (1) 512K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 512K x | (1) 1M x 36 | (1) 1M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 512K x | (1) 2M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 11MB | (1) 2M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 2M x 36 | (1) 512K x | (1) 512K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 2M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 2M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 13MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 14MB | (1) 2M x 36 | (1) 512K x | (1) 512K x | (1) 512K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 14MB | (1) 512K x | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 4M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 256K x | (1) 2M x 36 | (1) 2M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 256K x | (1) 4M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 4M x 36 | (1) 512K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 512K x | (1) 2M x 36 | (1) 2M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 512K x | (1) 4M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 36 | (1) 512K x | (1) 512K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 2M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 1M x 36 | (1) 2M x 36 | (1) 2M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 4M x 36 | (1) 512K x | (1) 512K x | (1) 512K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 2M x 36 | NONE | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 2M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 25MB | (1) 256K x | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 26MB | (1) 512K x | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 1M x 36 | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 2M x 36 | (1) 2M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 8M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 256K x | (1) 4M x 36 | (1) 4M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 256K x | (1) 8M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 8M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 8M x 36 | (1) 512K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 512K x | (1) 4M x 36 | (1) 4M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 512K x | (1) 8M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 35MB | (1) 8M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 8M x 36 | (1) 512K x | (1) 512K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 8M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 8M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 38MB | (1) 8M x 36 | (1) 512K x | (1) 512K x | (1) 512K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 8M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 8M x 36 | (1) 2M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 2M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 2M x 36 | (1) 8M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 44MB | (1) 8M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 8M x 36 | (1) 2M x 36 | (1) 2M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 8M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 8M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 49MB | (1) 256K x | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 50MB | (1) 512K x | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 52MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 56MB | (1) 8M x 36 | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 56MB | (1) 2M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 65MB | (1) 256K x | (1) 8M x 36 | (1) 8M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 66MB | (1) 512K x | (1) 8M x 36 | (1) 8M x | NONE |
| | 36 | | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 1M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 2M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 8M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 4M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 97MB | (1) 256K x | (1) 8M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 98MB | (1) 512K x | (1) 8M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 100MB | (1) 1M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 104MB | (1) 2M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 112MB | (1) 4M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | (1) 8K x 8 |
|------------------+--------------------+--------------------|
| 256KB | (4) 64K x 8 | (1) 16K x 8 |
|------------------+--------------------+--------------------|
| 512KB | (4) 128K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP7 | JP8 |
|------------------+--------------------+--------------------|
| 128KB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 256KB | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 512KB | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP9 | JP10 | JP14 | JP15 | JP16 |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486SX (WB) | 2 & 3 | 1 & 2 | Open | 1 & 2 | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486SX (WT) | 2 & 3 | 1 & 2 | Open | 1 & 2 | 2 & 3 |
|--------------------+-------+-------+-------+-------+-------|
| 80486SX | Open | 2 & 3 | Open | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| SL80486SX | Open | 2 & 3 | Open | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| UMC486 | 2 & 3 | Open | Open | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| CXM7 | 2 & 3 | 2 & 3 | Open | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| AM486DX | 2 & 3 | 2 & 3 | Open | Open | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486DX (WB) | 2 & 3 | 1 & 2 | Open | 1 & 2 | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486DX (WT) | 2 & 3 | 1 & 2 | Open | 1 & 2 | 2 & 3 |
|--------------------+-------+-------+-------+-------+-------|
| 80486DX | 2 & 3 | 2 & 3 | Open | Open | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| SL80486DX | 2 & 3 | 2 & 3 | Open | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| AM486DX2 | 2 & 3 | 2 & 3 | Open | Open | 2 & 3 |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486DX2 (WB) | 2 & 3 | 1 & 2 | Open | 1 & 2 | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486DX2 (WT) | 2 & 3 | 1 & 2 | Open | 1 & 2 | 2 & 3 |
|--------------------+-------+-------+-------+-------+-------|
| 80486DX2 | 2 & 3 | 2 & 3 | Open | Open | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| SL80486DX2 | 2 & 3 | 2 & 3 | Open | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| AM486DX4 | 2 & 3 | 2 & 3 | Open | Open | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486DX4 (2x | 2 & 3 | 1 & 2 | Open | 1 & 2 | 1 & 2 |
| WB) | | | | | |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486DX4 (3x | 2 & 3 | 1 & 2 | Open | 1 & 2 | 1 & 2 |
| WB) | | | | | |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486DX4 (2x | 2 & 3 | 1 & 2 | Open | 1 & 2 | 2 & 3 |
| WT) | | | | | |
|--------------------+-------+-------+-------+-------+-------|
| (SL)AM486DX4 (3x | 2 & 3 | 1 & 2 | Open | 1 & 2 | 2 & 3 |
| WT) | | | | | |
|--------------------+-------+-------+-------+-------+-------|
| 80486DX4 (2x) | 2 & 3 | 2 & 3 | Open | Open | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| 80486DX4 (2.5x) | 2 & 3 | 2 & 3 | Open | Open | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| 80486DX4 (3x) | 2 & 3 | 2 & 3 | Open | Open | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| SL80486DX4 (2x) | 2 & 3 | 2 & 3 | Open | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| SL80486DX4 (2.5x) | 2 & 3 | 2 & 3 | Open | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| SL80486DX4 (3x) | 2 & 3 | 2 & 3 | Open | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| CXM9 (2x) | 2 & 3 | 1 & 2 | Open | 1 & 2 | Open |
|--------------------+-------+-------+-------+-------+-------|
| CXM9 (3x) | 2 & 3 | 1 & 2 | Open | 1 & 2 | Open |
|--------------------+-------+-------+-------+-------+-------|
| P24D (WB) | 2 & 3 | 1 & 2 | Open | 1 & 2 | 1 & 2 |
|--------------------+-------+-------+-------+-------+-------|
| P24D (WT) | 2 & 3 | 1 & 2 | Open | 1 & 2 | 2 & 3 |
|--------------------+-------+-------+-------+-------+-------|
| P24T (WB) | 1 & 2 | 1 & 2 | 1 & 2 | Open | Open |
|--------------------+-------+-------+-------+-------+-------|
| P24T (WT) | 1 & 2 | 1 & 2 | 2 & 3 | Open | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP17 | JP20 | JP21 | JP23 | JP24 |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486SX (WB) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486SX (WT) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| 80486SX | Open | Open | Open | Open | Open |
|--------------------+-------+--------+------+-------+-------|
| SL80486SX | 2 & 3 | Closed | Open | 1 & 2 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| UMC486 | Open | Open | Open | Open | Open |
|--------------------+-------+--------+------+-------+-------|
| CXM7 | 1 & 2 | Closed | Open | Open | 2 & 3 |
|--------------------+-------+--------+------+-------+-------|
| AM486DX | Open | Open | Open | Open | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486DX (WB) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486DX (WT) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| 80486DX | Open | Open | Open | Open | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| SL80486DX | 2 & 3 | Closed | Open | 1 & 2 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| AM486DX2 | Open | Open | Open | Open | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486DX2 (WB) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486DX2 (WT) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| 80486DX2 | Open | Open | Open | Open | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| SL80486DX2 | 2 & 3 | Closed | Open | 1 & 2 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| AM486DX4 | Open | Open | Open | Open | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486DX4 (2x | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
| WB) | | | | | |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486DX4 (3x | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
| WB) | | | | | |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486DX4 (2x | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
| WT) | | | | | |
|--------------------+-------+--------+------+-------+-------|
| (SL)AM486DX4 (3x | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
| WT) | | | | | |
|--------------------+-------+--------+------+-------+-------|
| 80486DX4 (2x) | Open | Open | Open | Open | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| 80486DX4 (2.5x) | Open | Open | Open | Open | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| 80486DX4 (3x) | Open | Open | Open | Open | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| SL80486DX4 (2x) | 2 & 3 | Closed | Open | 1 & 2 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| SL80486DX4 (2.5x) | 2 & 3 | Closed | Open | 1 & 2 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| SL80486DX4 (3x) | 2 & 3 | Closed | Open | 1 & 2 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| CXM9 (2x) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| CXM9 (3x) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| P24D (WB) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| P24D (WT) | 2 & 3 | Closed | Open | 2 & 3 | 4 & 5 |
|--------------------+-------+--------+------+-------+-------|
| P24T (WB) | 2 & 3 | Closed | Open | Open | 1 & 2 |
|--------------------+-------+--------+------+-------+-------|
| P24T (WT) | 2 & 3 | Closed | Open | Open | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP25 | JP26 | JP28 | JP29 | JP30 |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486SX (WB) | 2 & 3 | 1 & 2, | Open | 1 & 2 | Open |
| | | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486SX (WT) | 2 & 3 | 1 & 2, | Open | 1 & 2 | Open |
| | | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| 80486SX | 2 & 3 | Open | Open | Open | Open |
|------------------+--------+--------+-------+-------+-------|
| SL80486SX | 2 & 3 | 3 & 4 | Open | Open | Open |
|------------------+--------+--------+-------+-------+-------|
| UMC486 | 2 & 3 | Open | Open | Open | Open |
|------------------+--------+--------+-------+-------+-------|
| CXM7 | 1 & 2, | 2 & 3 | 2 & 3 | 2 & 3 | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| AM486DX | 1 & 2, | 3 & 4 | Open | Open | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486DX (WB) | 1 & 2, | 1 & 2, | Open | 1 & 2 | Open |
| | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486DX (WT) | 1 & 2, | 1 & 2, | Open | 1 & 2 | Open |
| | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| 80486DX | 1 & 2, | 3 & 4 | Open | Open | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| SL80486DX | 1 & 2, | 3 & 4 | Open | Open | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| AM486DX2 | 1 & 2, | 3 & 4 | Open | Open | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486DX2 | 1 & 2, | 1 & 2, | Open | 1 & 2 | Open |
| (WB) | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486DX2 | 1 & 2, | 1 & 2, | Open | 1 & 2 | Open |
| (WT) | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| 80486DX2 | 1 & 2, | 3 & 4 | Open | Open | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| SL80486DX2 | 1 & 2, | 3 & 4 | Open | Open | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| AM486DX4 | 1 & 2, | 3 & 4 | Open | Open | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486DX4 (2x | 1 & 2, | 1 & 2, | Open | 1 & 2 | 2 & 3 |
| WB) | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486DX4 (3x | 1 & 2, | 1 & 2, | Open | 1 & 2 | Open |
| WB) | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486DX4 (2x | 1 & 2, | 1 & 2, | Open | 1 & 2 | 2 & 3 |
| WT) | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| (SL)AM486DX4 (3x | 1 & 2, | 1 & 2, | Open | 1 & 2 | Open |
| WT) | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| 80486DX4 (2x) | 1 & 2, | 3 & 4 | Open | Open | 2 & 3 |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| 80486DX4 (2.5x) | 1 & 2, | 3 & 4 | Open | Open | 1 & 2 |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| 80486DX4 (3x) | 1 & 2, | 3 & 4 | Open | Open | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| SL80486DX4 (2x) | 1 & 2, | 3 & 4 | Open | Open | 2 & 3 |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| SL80486DX4 | 1 & 2, | 3 & 4 | Open | Open | 1 & 2 |
| (2.5x) | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| SL80486DX4 (3x) | 1 & 2, | 3 & 4 | Open | Open | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| CXM9 (2x) | 1 & 2, | 1 & 2, | Open | 1 & 2 | 2 & 3 |
| | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| CXM9 (3x) | 1 & 2, | 1 & 2, | Open | 1 & 2 | Open |
| | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| P24D (WB) | 1 & 2, | 1 & 2, | Open | 1 & 2 | Open |
| | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| P24D (WT) | 1 & 2, | 1 & 2, | Open | 1 & 2 | Open |
| | 3 & 4 | 3 & 4 | | | |
|------------------+--------+--------+-------+-------+-------|
| P24T (WB) | 1 & 2, | 3 & 4 | 1 & 2 | 1 & 2 | Open |
| | 3 & 4 | | | | |
|------------------+--------+--------+-------+-------+-------|
| P24T (WT) | 1 & 2, | 3 & 4 | 1 & 2 | 1 & 2 | Open |
| | 3 & 4 | | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP11 | JP12 |
|------------+--------------------------+--------------------|
| 25MHz | pins 1 & 2 closed | Open |
|------------+--------------------------+--------------------|
| 33MHz | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
|------------+--------------------------+--------------------|
| 40MHz | pins 1 & 2 closed | pins 2 & 3 closed |
|------------+--------------------------+--------------------|
| 50iMHz | pins 1 & 2 closed | Open |
|------------+--------------------------+--------------------|
| 50MHz | pins 3 & 4 closed | pins 2 & 3 closed |
|------------+--------------------------+--------------------|
| 66iMHz | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
|------------+--------------------------+--------------------|
| 80iMHz | pins 1 & 2 closed | pins 2 & 3 closed |
|------------+--------------------------+--------------------|
| 100iMHz | pins 1 & 2, 3 & 4 closed | pins 1 & 2 closed |
|------------+--------------------------+--------------------|
| 120iMHz | pins 1 & 2 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP31 | JP32 | JP34 |
|---------+----------------+----------------+----------------|
| 3.3v | pins 2 & 3 | pins 5 & 6 | pins 2 & 3 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 3.45v | pins 2 & 3 | pins 3 & 4 | pins 2 & 3 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 4v | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 5v | pins 1 & 2 | N/A | pins 1 & 2 |
| | closed | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| GREEN PC CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP36 |
|----------------------------+-------------------------------|
| Doze mode | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| Suspend mode | pins 3 & 4 closed |
|----------------------------+-------------------------------|
| Standby mode | pins 5 & 6, 7 & 8 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CMOS CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP2 | JP3 |
|--------------------+-------------------+-------------------|
| CMOS memory normal | pins 1 & 2 closed | pins 1 & 2 closed |
| operation | | |
|--------------------+-------------------+-------------------|
| CMOS memory clear | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+