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# SILICON STAR INTERNATIONAL, INC.
AN4R2/AN4TR2 REV. 1.1 & REV. 1.2
Processor SL80486SX/80486SX/CX486DX/SL80486DX/80486DX/CX486DX2/AM486DX2/SL80486DX2/80486DX2/80486DX4
Processor 20/25/33/40/50(internal)/66(internal)/75(internal)/83(internal)/100(internal)MHz
Speed
Chip Set Unidentified
Max. 128MB
Onboard
DRAM
Cache 128/256/512KB
BIOS AMI/Award
Dimensions 330mm x 218mm
I/O 32-bit VESA local bus slots (3), green PC connector
Options
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+-----------+-----------------+----------|
| External battery | JP25 | Reset switch | JW3 |
|-------------------+-----------+-----------------+----------|
| Green PC | JP46 pins | Turbo switch | JW4 |
| connector | 1 - 3 | | |
| (monitor) | | | |
|-------------------+-----------+-----------------+----------|
| Green PC | JP46 pins | Turbo LED | JW5 |
| connector | 7 & 8 | | |
|-------------------+-----------+-----------------+----------|
| Power LED & | JW1 | 32-bit VESA | SL1 - |
| keylock | | local bus slots | SL3 |
|-------------------+-----------+-----------------+----------|
| Speaker | JW2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP3 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP4 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP6 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP13 | Closed |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP14 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP15 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP16 | Closed |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | JP21 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JP21 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP41 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP49 | pins 1 & 2 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP52 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP60 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP62 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | SIMM 1 - 4 | SIMM 5 - 8 | SIMM 9 | SIMM 10 |
|------+-------------+-------------+------------+------------|
| 1MB | NONE | NONE | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 1MB | (4) 256K x | NONE | NONE | NONE |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 1MB | (4) 256K x | NONE | NONE | NONE |
| | 9 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | NONE | NONE | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 2MB | (4) 256K x | NONE | NONE | (1) 256K x |
| | 9 | | | 36 |
|------+-------------+-------------+------------+------------|
| 2MB | NONE | NONE | (1) 512K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 2MB | (4) 256K x | (4) 256K x | NONE | NONE |
| | 9 | 9 | | |
|------+-------------+-------------+------------+------------|
| 4MB | NONE | NONE | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 1M x 9 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 4MB | NONE | NONE | (1) 512K x | (1) 512K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 256K x | NONE | (1) 512K x | (1) 256K x |
| | 9 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | (4) 256K x | (4) 256K x | (1) 512K x | NONE |
| | 9 | 9 | 36 | |
|------+-------------+-------------+------------+------------|
| 5MB | NONE | NONE | (1) 256K x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 5MB | (4) 256K x | NONE | NONE | (1) 1M x |
| | 9 | | | 36 |
|------+-------------+-------------+------------+------------|
| 6MB | (4) 1M x 9 | NONE | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 6MB | (4) 256K x | NONE | (1) 1M x | (1) 256K x |
| | 9 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 6MB | NONE | NONE | (1) 512K x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 6MB | (4) 256K x | (4) 256K x | (1) 1M x | NONE |
| | 9 | 9 | 36 | |
|------+-------------+-------------+------------+------------|
| 8MB | NONE | NONE | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (4) 1M x 9 | NONE | NONE | (1) 1M x |
| | | | | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | NONE | NONE | (1) 2M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 8MB | (4) 1M x 9 | NONE | (1) 512K x | (1) 512K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (4) 1M x 9 | (4) 1M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 10MB | (4) 1M x 9 | (4) 1M x 9 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 10MB | (4) 256K x | (4) 256K x | (1) 1M x | (1) 1M x |
| | 9 | 9 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (4) 1M x 9 | NONE | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | SIMM 1 - 4 | SIMM 5 - 8 | SIMM 9 | SIMM 10 |
|------+-------------+-------------+------------+------------|
| 12MB | (4) 1M x 9 | NONE | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (4) 1M x 9 | (4) 1M x 9 | (1) 512K x | (1) 512K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | NONE | NONE | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 4M x 9 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | NONE | NONE | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 1M x 9 | (4) 1M x 9 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (4) 4M x 9 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 17MB | NONE | NONE | (1) 256K x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 17MB | (4) 256K x | NONE | NONE | (1) 4M x |
| | 9 | | | 36 |
|------+-------------+-------------+------------+------------|
| 18MB | (4) 4M x 9 | NONE | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 18MB | (4) 256K x | NONE | (1) 4M x | (1) 256K x |
| | 9 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 18MB | NONE | NONE | (1) 512K x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 18MB | (4) 256K x | (4) 256K x | (1) 4M x | NONE |
| | 9 | 9 | 36 | |
|------+-------------+-------------+------------+------------|
| 20MB | NONE | NONE | (1) 1M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (4) 1M x 9 | NONE | NONE | (1) 4M x |
| | | | | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (4) 4M x 9 | NONE | (1) 512K x | (1) 512K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (4) 4M x 9 | NONE | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (4) 1M x 9 | NONE | (1) 4M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (4) 1M x 9 | (4) 4M x 9 | (1) 512K x | (1) 512K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (4) 1M x 9 | (4) 1M x 9 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 32MB | NONE | NONE | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (4) 4M x 9 | NONE | NONE | (1) 4M x |
| | | | | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | NONE | NONE | (1) 8M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 32MB | (4) 4M x 9 | (4) 4M x 9 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 36MB | (4) 4M x 9 | NONE | (1) 1M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (4) 1M x 9 | NONE | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (4) 4M x 9 | (4) 4M x 9 | (1) 512K x | (1) 512K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (4) 1M x 9 | NONE | (1) 8M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 36MB | (4) 1M x 9 | (4) 4M x 9 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 40MB | (4) 4M x 9 | (4) 4M x 9 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (4) 1M x 9 | NONE | (1) 8M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (4) 1M x 9 | (4) 1M x 9 | (1) 8M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 40MB | (4) 1M x 9 | (4) 1M x 9 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (4) 4M x 9 | NONE | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (4) 4M x 9 | NONE | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (4) 4M x 9 | NONE | (1) 8M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 48MB | (4) 4M x 9 | (4) 4M x 9 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 64MB | (4) 4M x 9 | (4) 4M x 9 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | NONE | NONE | (1) 16M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 64MB | (4) 16M x 9 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 64MB | NONE | NONE | (1) 8M x | (1) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (4) 4M x 9 | NONE | (1) 8M x | (1) 4M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | SIMM 1 - 4 | SIMM 5 - 8 | SIMM 9 | SIMM 10 |
|-------+-------------+------------+-------------+-----------|
| 64MB | (4) 4M x 9 | (4) 4M x 9 | (1) 8M x 36 | NONE |
|-------+-------------+------------+-------------+-----------|
| 64MB | (4) 4M x 9 | (4) 4M x 9 | (1) 4M x 36 | (1) 4M x |
| | | | | 36 |
|-------+-------------+------------+-------------+-----------|
| 64MB | (4) 16M x 9 | NONE | NONE | NONE |
|-------+-------------+------------+-------------+-----------|
| 65MB | NONE | NONE | (1) 256K x | (1) 16M x |
| | | | 36 | 36 |
|-------+-------------+------------+-------------+-----------|
| 65MB | (4) 256K x | NONE | NONE | (1) 16M x |
| | 9 | | | 36 |
|-------+-------------+------------+-------------+-----------|
| 68MB | NONE | NONE | (1) 1M x 36 | (1) 16M x |
| | | | | 36 |
|-------+-------------+------------+-------------+-----------|
| 68MB | (4) 1M x 9 | NONE | NONE | (1) 16M x |
| | | | | 36 |
|-------+-------------+------------+-------------+-----------|
| 68MB | (4) 1M x 9 | (4) 16M x | NONE | NONE |
| | | 9 | | |
|-------+-------------+------------+-------------+-----------|
| 72MB | (4) 16M x 9 | NONE | (1) 1M x 36 | (1) 1M x |
| | | | | 36 |
|-------+-------------+------------+-------------+-----------|
| 72MB | (4) 1M x 9 | NONE | (1) 16M x | (1) 1M x |
| | | | 36 | 36 |
|-------+-------------+------------+-------------+-----------|
| 72MB | (4) 1M x 9 | (4) 1M x 9 | (1) 16M x | NONE |
| | | | 36 | |
|-------+-------------+------------+-------------+-----------|
| 80MB | NONE | NONE | (1) 4M x 36 | (1) 16M x |
| | | | | 36 |
|-------+-------------+------------+-------------+-----------|
| 80MB | (4) 4M x 9 | NONE | NONE | (1) 16M x |
| | | | | 36 |
|-------+-------------+------------+-------------+-----------|
| 80MB | (4) 4M x 9 | (4) 16M x | NONE | NONE |
| | | 9 | | |
|-------+-------------+------------+-------------+-----------|
| 96MB | (4) 16M x 9 | NONE | (1) 4M x 36 | (1) 4M x |
| | | | | 36 |
|-------+-------------+------------+-------------+-----------|
| 96MB | (4) 4M x 9 | NONE | (1) 16M x | (1) 4M x |
| | | | 36 | 36 |
|-------+-------------+------------+-------------+-----------|
| 96MB | (4) 4M x 9 | (4) 4M x 9 | (1) 16M x | NONE |
| | | | 36 | |
|-------+-------------+------------+-------------+-----------|
| 128MB | NONE | NONE | (1) 16M x | (1) 16M x |
| | | | 36 | 36 |
|-------+-------------+------------+-------------+-----------|
| 128MB | (4) 16M x 9 | NONE | NONE | (1) 16M x |
| | | | | 36 |
|-------+-------------+------------+-------------+-----------|
| 128MB | (4) 16M x 9 | (4) 16M x | NONE | NONE |
| | | 9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Bank | Bank | Bank | Bank | JP18 | JP19 | JP20 | JP22 |
| 0 | 1 | 2 | 3 | | | | |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | SIMM | 1 & | 1 & | Open | 1 & |
| 1 - 4 | 5 - 8 | 9 | 10 | 2 | 2 | | 2 |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | NONE | 1 & | 1 & | Open | 1 & |
| 1 - 4 | 5 - 8 | 9 | | 2 | 2 | | 2 |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | NONE | NONE | 1 & | Open | Open | 1 & |
| 1 - 4 | 9 | | | 2 | | | 2 |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | NONE | 1 & | Open | Open | 1 & |
| 1 - 4 | 10 | 9 | | 2 | | | 2 |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | SIMM | 2 & | 2 & | Open | 2 & |
| 9 | 10 | 1 - 4 | 5 - | 3 | 3 | | 3 |
| | | | 8 | | | | |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | NONE | NONE | Open | Open | Closed | 2 & |
| 9 | 10 | | | | | | 3 |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | NONE | 1 & | Open | Open | 1 & |
| 1 - 4 | 10 | 9 | | 2 | | | 2 |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | SIMM | 2 & | 2 & | Open | 2 & |
| 9 | 10 | 1 - 4 | 5 - | 3 | 3 | | 3 |
| | | | 8 | | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Bank | Bank | Bank | Bank | JP23 | JP24 | JP50 | JP51 |
| 0 | 1 | 2 | 3 | | | | |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | SIMM | Open | 1 & | Open | Open |
| 1 - 4 | 5 - 8 | 9 | 10 | | 2 | | |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | NONE | 1 & | Open | Open | Open |
| 1 - 4 | 5 - 8 | 9 | | 2 | | | |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | NONE | NONE | 2 & | Open | Open | Open |
| 1 - 4 | 9 | | | 3 | | | |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | NONE | 1 & | 2 & | Open | Open |
| 1 - 4 | 10 | 9 | | 2 | 3 | | |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | SIMM | Open | 2 & | Closed | 2 & |
| 9 | 10 | 1 - 4 | 5 - | | 3 | | 3 |
| | | | 8 | | | | |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | NONE | NONE | 2 & | Open | Open | 1 & |
| 9 | 10 | | | 3 | | | 2 |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | NONE | 1 & | 2 & | Open | Open |
| 1 - 4 | 10 | 9 | | 2 | 3 | | |
|-------+-------+-------+------+------+------+--------+------|
| SIMM | SIMM | SIMM | SIMM | Open | 2 & | Open | Open |
| 9 | 10 | 1 - 4 | 5 - | | 3 | | |
| | | | 8 | | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 64K x 8 | NONE | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | NONE | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP1 | JP2 | JP42 | JP44 |
|-------+-------------+------------+------------+------------|
| 128KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 256KB | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 256KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 512KB | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP9 | JP12 | JP30 | JP31 | JP33 |
|--------------+--------+--------+--------+--------+---------|
| SL80486SX | 2 & 3 | 2 & 3 | 2 & 3 | Open | Open |
|--------------+--------+--------+--------+--------+---------|
| 80486SX | 2 & 3 | 2 & 3 | 2 & 3 | Open | Open |
|--------------+--------+--------+--------+--------+---------|
| CX486DX | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed |
|--------------+--------+--------+--------+--------+---------|
| SL80486DX | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed |
|--------------+--------+--------+--------+--------+---------|
| 80486DX | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed |
|--------------+--------+--------+--------+--------+---------|
| CX486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | 3 & 4 | Closed |
|--------------+--------+--------+--------+--------+---------|
| AM486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | 3 & 4 | Closed |
|--------------+--------+--------+--------+--------+---------|
| SL80486DX2 | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed |
|--------------+--------+--------+--------+--------+---------|
| 80486DX2 | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | Closed |
|--------------+--------+--------+--------+--------+---------|
| 80486DX4 | 1 & 2 | 1 & 2 | 1 & 2 | 3 & 4 | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed |
| position. The 80486DX4 CPU is only available on the |
| AN4TR2 mainboard. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP34 | JP35 | JP36 | JP38 |
|--------------+----------+----------+-------------+---------|
| SL80486SX | 4 & 5 | 3 & 4 | 2 & 3 | Open |
|--------------+----------+----------+-------------+---------|
| 80486SX | 4 & 5 | 3 & 4 | 2 & 3 | Open |
|--------------+----------+----------+-------------+---------|
| CX486DX | 2 & 3 | 2 & 3 | 1 & 2, 3 & | 2 & 3 |
| | | | 4 | |
|--------------+----------+----------+-------------+---------|
| SL80486DX | 4 & 5 | 3 & 4 | 2 & 3 | Open |
|--------------+----------+----------+-------------+---------|
| 80486DX | 4 & 5 | 3 & 4 | 2 & 3 | Open |
|--------------+----------+----------+-------------+---------|
| CX486DX2 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 |
|--------------+----------+----------+-------------+---------|
| AM486DX2 | 4 & 5 | 3 & 4 | 2 & 3 | Open |
|--------------+----------+----------+-------------+---------|
| SL80486DX2 | 4 & 5 | 3 & 4 | 2 & 3 | Open |
|--------------+----------+----------+-------------+---------|
| 80486DX2 | 4 & 5 | 3 & 4 | 2 & 3 | Open |
|--------------+----------+----------+-------------+---------|
| 80486DX4 | 4 & 5 | 3 & 4 | 2 & 3 | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed |
| position. The 80486DX4 CPU is only available on the |
| AN4TR2 mainboard. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP39 | JP43 | JP47 | JP48 | JP63 |
|---------------+--------+--------+--------+--------+--------|
| SL80486SX | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open |
|---------------+--------+--------+--------+--------+--------|
| 80486SX | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open |
|---------------+--------+--------+--------+--------+--------|
| CX486DX | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | Open |
|---------------+--------+--------+--------+--------+--------|
| SL80486DX | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open |
|---------------+--------+--------+--------+--------+--------|
| 80486DX | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open |
|---------------+--------+--------+--------+--------+--------|
| CX486DX2 | 2 & 3 | 1 & 2 | 1 & 2 | 2 & 3 | Open |
|---------------+--------+--------+--------+--------+--------|
| AM486DX2 | Open | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 |
|---------------+--------+--------+--------+--------+--------|
| SL80486DX2 | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open |
|---------------+--------+--------+--------+--------+--------|
| 80486DX2 | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open |
|---------------+--------+--------+--------+--------+--------|
| 80486DX4 | Open | 2 & 3 | 2 & 3 | 1 & 2 | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed |
| position. The 80486DX4 CPU is only available on the |
| AN4TR2 mainboard. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (AVASEM AV9107) |
|------------------------------------------------------------|
| Speed | JP8 | JP10 | JP11 | JP26 | JP27 |JP28 | JP29 |
|--------+-------+-------+------+-------+-------+-----+------|
| 20MHz | 2 & 3 | Open | Open |Closed | Open |1 & 2|Closed|
|--------+-------+-------+------+-------+-------+-----+------|
| 25MHz | 2 & 3 | Open | Open | Open |Closed |1 & 2|Closed|
|--------+-------+-------+------+-------+-------+-----+------|
| 33MHz | 2 & 3 | Open | Open |Closed |Closed |1 & 2| Open |
|--------+-------+-------+------+-------+-------+-----+------|
| 40MHz | 2 & 3 | Open | Open | Open | Open |1 & 2|Closed|
|--------+-------+-------+------+-------+-------+-----+------|
| 50iMHz | 2 & 3 | Open | Open | Open |Closed |1 & 2|Closed|
|--------+-------+-------+------+-------+-------+-----+------|
| 66iMHz | 2 & 3 | Open | Open |Closed |Closed |1 & 2| Open |
|--------+-------+-------+------+-------+-------+-----+------|
| 75iMHz | 2 & 3 | Open |1 & 2 | Open |Closed |Open |Closed|
|--------+-------+-------+------+-------+-------+-----+------|
| 83iMHz | 2 & 3 |Closed | Open |Closed |Closed |Open | Open |
|--------+-------+-------+------+-------+-------+-----+------|
|100iMHz | 2 & 3 | Open |1 & 2 |Closed |Closed |Open | Open |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (MX8315) |
|------------------------------------------------------------|
| Speed | JP8 | JP10 | JP11 | JP26 | JP27 |JP28 | JP29 |
|--------+-------+-------+------+-------+-------+-----+------|
| 20MHz | 1 & 2 | Open | Open | Open | Open |1 & 2| Open |
|--------+-------+-------+------+-------+-------+-----+------|
| 25MHz | 1 & 2 | Open | Open | Open |Closed |1 & 2| Open |
|--------+-------+-------+------+-------+-------+-----+------|
| 33MHz | 1 & 2 | Open | Open |Closed |Closed |1 & 2|Closed|
|--------+-------+-------+------+-------+-------+-----+------|
| 40MHz | 1 & 2 | Open | Open |Closed |Closed |1 & 2| Open |
|--------+-------+-------+------+-------+-------+-----+------|
| 50iMHz | 1 & 2 | Open | Open | Open |Closed |1 & 2| Open |
|--------+-------+-------+------+-------+-------+-----+------|
| 66iMHz | 1 & 2 | Open | Open |Closed |Closed |1 & 2|Closed|
|--------+-------+-------+------+-------+-------+-----+------|
| 75iMHz | 1 & 2 | Open |1 & 2 | Open |Closed |Open |Closed|
|--------+-------+-------+------+-------+-------+-----+------|
| 83iMHz | 1 & 2 |Closed | Open |Closed |Closed |Open |Closed|
|--------+-------+-------+------+-------+-------+-----+------|
|100iMHz | 1 & 2 | Open |1 & 2 |Closed |Closed |Open |Closed|
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP53 | JP54 | JP55 | JP56 |
|---------+------------+------------+------------+-----------|
| 3.3v | pins 1 & 2 | Open | Open | Open |
| | closed | | | |
|---------+------------+------------+------------+-----------|
| 3.45v | Open | pins 1 & 2 | Open | Open |
| | | closed | | |
|---------+------------+------------+------------+-----------|
| 3.6v | Open | Open | pins 1 & 2 | Open |
| | | | closed | |
|---------+------------+------------+------------+-----------|
| 4v | Open | Open | Open | pins 1 & |
| | | | | 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP7 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+