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# SHUTTLE COMPUTER INTERNATIONAL, INC.
HOT-433
Processor CX486S/80486SX/SL80486SX/CX486DX/AM486DX/SL AM486DX/UMC U5/
80486DX/AM486DX2/SL AM486DX2/CX486DX2/80486DX2/CX486DX4/ SL
AM486DX4/AM486DX4/80486DX4/P24D/Pentium Overdrive
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set UMC
Max. 256MB
Onboard
DRAM
Cache 128/256/512/1024KB
BIOS AMI
Dimensions 260 x 220mm
I/O 32-bit PCI slots (4), floppy drive interface, green PC connector,
Options IDE interfaces (2), parallel port, PS/2 mouse port, serial ports
(2)
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| External battery | CN1 | Green PC | JP6 |
| | | connector | |
|--------------------+----------+-----------------+----------|
| Serial port 2 | CN2 | Reset switch | JP33 |
|--------------------+----------+-----------------+----------|
| Serial port 1 | CN3 | Turbo switch | JP34 |
|--------------------+----------+-----------------+----------|
| Parallel port | CN4 | EPMI connector | JP35 |
|--------------------+----------+-----------------+----------|
| Floppy drive | CN5 | Turbo LED | LED1 |
| interface | | | |
|--------------------+----------+-----------------+----------|
| IDE linterface | CN6 | IDE interface | LED2 |
| (secondary) | | LED | |
|--------------------+----------+-----------------+----------|
| IDE interface | CN7 | PS/2 mouse port | MS1 |
| (primary) | | | |
|--------------------+----------+-----------------+----------|
| Speaker | CN8 | 32-bit PCI | PCI1 - |
| | | slots | PCI4 |
|--------------------+----------+-----------------+----------|
| Power LED & | CN9 | | |
| keylock | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Flash BIOS voltage select 5v | JP8 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Flash BIOS voltage select 12v | JP8 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CPU cache type select write back | JP24 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CPU cache type select write | JP24 | pins 1 & 2 |
| | though | | closed |
|---+----------------------------------+--------+------------|
| | CPU cache type select other CPU | JP24 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | (1) 512K x | NONE | NONE | NONE |
| | 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 | (1) 512K x | (1) 512K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 512K x | (1) 512K x | (1) 512K x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 256K x | (1) 256K x | (1) 512K x | (1) 512K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 512K x | (1) 512K x | (1) 512K x | (1) 512K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 512K x | (1) 512K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 256K x | (1) 256K x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 512K x | (1) 512K x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x 36 | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 256K x | (1) 256K x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 512K x | (1) 512K x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 2M x 36 | (1) 2M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 16M x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 66MB | (1) 256K x | (1) 256K x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 68MB | (1) 512K x | (1) 512K x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x 36 | (1) 8M x | (1) 8M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 2M x 36 | (1) 2M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M 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 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 16M x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 160MB | (1) 4M x 36 | (1) 4M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 192MB | (1) 16M x | (1) 16M x | (1) 16M x | NONE |
| | 36 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 192MB | (1) 8M x 36 | (1) 8M x | (1) 16M x | (1) 16M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 256MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | Open | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 64K x 8 | Open | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 128K x 8 | Open | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 64K x 8 | (4) 64K x 8 | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 64K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP11 | JP12 | JP13 | JP14 |
|---------+---------+---------+--------+---------------------|
| 128KB | Open | Open | 2 & 3 | Open |
|---------+---------+---------+--------+---------------------|
| 256KB | Open | Open | 1 & 2 | 1 & 2 |
|---------+---------+---------+--------+---------------------|
| 256KB | Open | 1 & 2 | 2 & 3 | 1 & 2 |
|---------+---------+---------+--------+---------------------|
| 512KB | 1 & 2 | 1 & 2 | 2 & 3 | 1 & 2, 3 & 4 |
|---------+---------+---------+--------+---------------------|
| 512KB | Open | 2 & 3 | 1 & 2 | 1 & 2, 3 & 4 |
|---------+---------+---------+--------+---------------------|
| 1MB | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2, 3 & 4, 5 & 6 |
|------------------------------------------------------------|
| Note: Pins designated should be in closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP10 | JP17 | JP19 | JP20 | JP21 |
|-----------+----------+-------+----------+----------+-------|
| CX486S | 1 & 3, 4 | 2 & 3 | 3 & 4 | 1 & 2, 3 | 1 & 2 |
| | & 6 | | | & 4 | |
|-----------+----------+-------+----------+----------+-------|
| 80486SX | 1 & 3, 2 | Open | 1 & 2 | Open | Open |
| | & 4 | | | | |
|-----------+----------+-------+----------+----------+-------|
| SL80486SX | 1 & 3, 2 | 1 & 2 | 3 & 4 | 2 & 3, 4 | 1 & 2 |
| | & 4 | | | & 5 | |
|-----------+----------+-------+----------+----------+-------|
| CX486DX | 1 & 3, 4 | 2 & 3 | 3 & 4 | 1 & 2, 3 | 1 & 2 |
| | & 6 | | | & 4 | |
|-----------+----------+-------+----------+----------+-------|
| AM486DX | 1 & 3, 2 | Open | 1 & 2 | Open | Open |
| | & 4 | | | | |
|-----------+----------+-------+----------+----------+-------|
| SL | 1 & 3, 2 | 1 & 2 | 3 & 4 | 2 & 3, 4 | 1 & 2 |
| AM486DX | & 4 | | | & 5 | |
|-----------+----------+-------+----------+----------+-------|
| UMC U5 | 2 & 4, 3 | Open | 1 & 2 | Open | 2 & 3 |
| | & 5 | | | | |
|-----------+----------+-------+----------+----------+-------|
| 80486DX | 1 & 3, 2 | Open | 1 & 2 | Open | Open |
| | & 4 | | | | |
|-----------+----------+-------+----------+----------+-------|
| AM486DX2 | 1 & 3, 2 | Open | 1 & 2 | Open | Open |
| | & 4 | | | | |
|-----------+----------+-------+----------+----------+-------|
| SL | 1 & 3, 2 | 1 & 2 | 3 & 4 | 2 & 3, 4 | 1 & 2 |
| AM486DX2 | & 4 | | | & 5 | |
|-----------+----------+-------+----------+----------+-------|
| CX486DX2 | 1 & 3, 4 | 2 & 3 | 3 & 4 | 1 & 2, 3 | 1 & 2 |
| | & 6 | | | & 4 | |
|-----------+----------+-------+----------+----------+-------|
| 80486DX2 | 1 & 3, 2 | Open | 1 & 2 | Open | Open |
| | & 4 | | | | |
|-----------+----------+-------+----------+----------+-------|
| CX486DX4 | 1 & 3, 4 | 1 & 2 | 3 & 4 | 2 & 3, 4 | 1 & 2 |
| | & 6 | | | & 5 | |
|-----------+----------+-------+----------+----------+-------|
| SL | 1 & 3, 2 | 1 & 2 | 3 & 4 | 2 & 3, 4 | 1 & 2 |
| AM486DX4 | & 4 | | | & 5 | |
|-----------+----------+-------+----------+----------+-------|
| AM486DX4 | 1 & 3, 2 | Open | 1 & 2 | Open | Open |
| | & 4 | | | | |
|-----------+----------+-------+----------+----------+-------|
| 80486DX4 | 1 & 3, 2 | Open | 1 & 2 | Open | Open |
| | & 4 | | | | |
|-----------+----------+-------+----------+----------+-------|
| P24D | 1 & 3, 2 | 1 & 2 | 3 & 4 | 2 & 3, 4 | 1 & 2 |
| | & 4 | | | & 5 | |
|-----------+----------+-------+----------+----------+-------|
| P24T | 1 & 3, 2 | 1 & 2 | 3 & 4, 5 | 2 & 3, 4 | 1 & 2 |
| | & 4 | | & 6 | & 5 | |
|------------------------------------------------------------|
| Note: Pins designated should be in closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CONT) |
|------------------------------------------------------------|
| Type | JP22 | JP23 | JP25 | JP26 | JP27 |
|-------------+---------+---------+--------+--------+--------|
| CX486S | Open | Open | 2 & 3 | 2 & 3 | 1 & 2 |
|-------------+---------+---------+--------+--------+--------|
| 80486SX | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| SL80486SX | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| CX486DX | Open | Open | 2 & 3 | 2 & 3 | 1 & 2 |
|-------------+---------+---------+--------+--------+--------|
| AM486DX | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| SL AM486DX | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| UMC U5 | Open | Open | 2 & 3 | 1 & 2 | 2 & 3 |
|-------------+---------+---------+--------+--------+--------|
| 80486DX | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| AM486DX2 | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| SL AM486DX2 | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| CX486DX2 | Open | Open | 2 & 3 | 2 & 3 | 1 & 2 |
|-------------+---------+---------+--------+--------+--------|
| 80486DX2 | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| CX486DX4 | Open | Open | 2 & 3 | 2 & 3 | 1 & 2 |
|-------------+---------+---------+--------+--------+--------|
| SL AM486DX4 | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| AM486DX4 | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| 80486DX4 | Open | Open | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| P24D | Closed | Closed | 2 & 3 | Open | Open |
|-------------+---------+---------+--------+--------+--------|
| P24T | Open | Open | 2 & 3 | 1 & 2 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CONT) |
|------------------------------------------------------------|
| Type | JP28 | JP29 | JP30 | JP31 | JP32 |
|------------+----------+-------+----------+--------+--------|
| CX486S | 2 & 3 | 1 & 2 | Open | Open | Open |
|------------+----------+-------+----------+--------+--------|
| 80486SX | 2 & 3 | Open | Open | Open | Open |
|------------+----------+-------+----------+--------+--------|
| SL80486SX | 2 & 3 | Open | Open | Open | Open |
|------------+----------+-------+----------+--------+--------|
| CX486DX | 1 & 2, 3 | 2 & 3 | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| AM486DX | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| SL AM486DX | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| UMC U5 | 2 & 3 | 3 & 4 | 1 & 2, 3 | Open | Open |
| | | | & 4 | | |
|------------+----------+-------+----------+--------+--------|
| 80486DX | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| AM486DX2 | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| SL | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| AM486DX2 | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| CX486DX2 | 1 & 2, 3 | 2 & 3 | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| 80486DX2 | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| CX486DX4 | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| SL | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| AM486DX4 | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| AM486DX4 | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| 80486DX4 | 1 & 2, 3 | Open | 3 & 4 | Open | Open |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| P24D | 1 & 2, 3 | Open | 3 & 4 | Closed | Closed |
| | & 4 | | | | |
|------------+----------+-------+----------+--------+--------|
| P24T | 1 & 2, 3 | 3 & 4 | 2 & 3 | Open | Open |
| | & 4 | | | | |
|------------------------------------------------------------|
| Note: Pins designated should be in closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP1 | JP2 | JP3 |
|---------+----------------+----------------+----------------|
| 25MHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 33MHz | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 40MHz | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 50iMHz | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 50MHz | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 66iMHz | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 75iMHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 100iMHz | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CLOCK CONFIGURATION |
|------------------------------------------------------------|
| CPU Type | Clock Ratio | JP18 |
|------------------+--------------------+--------------------|
| DX4-75 | 3:1 | Open |
|------------------+--------------------+--------------------|
| DX4-100 | 3:1 | Open |
|------------------+--------------------+--------------------|
| DX4-100 | 2:1 | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Other CPU | Other CPU | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CLOCK CONFIGURATION - AMD |
|------------------------------------------------------------|
| CPU Type | Clock Ratio | JP18 |
|------------------+--------------------+--------------------|
| DX2-80 | 3:1 | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| DX2-80 | 2:1 | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| DX4-100 | 3:1 | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| DX4-100 | 2:1 | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Other CPU | Other CPU | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP9 | JP15 | JP16 |
|---------+----------------+----------------+----------------|
| 3.3v | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 3.45v | pins 3 & 4 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 3.6v | pins 5 & 6 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 4v | pins 7 & 8 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 5v | Open | pins 1 & 2 | pins 2 & 3 |
| | | closed | closed |
+------------------------------------------------------------+