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# FIRST INTERNATIONAL COMPUTER, INC.
486-PVT (REV. B1)
Processor CX486SX/80486SX/SL80486SX/AM486DX/AM486DXSL/80486DX/CX486DX/
CX486DXV/CX486DX2/CX486DX2VAM486DX2/AM486DX2SL/80486DX2/
80486DX4/P24CT/P24D/Pentium Overdrive
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set VIA
Max. 128MB
Onboard
DRAM
Cache 128/256/512KB
BIOS Award
Dimensions 254mm x 218mm
I/O 32-bit VESA local bus slots (2), green PC connector
Options
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+----------+---------------------+----------|
| Daughter board | CN6 | Speaker | J8 |
| connector | | | |
|----------------+----------+---------------------+----------|
| Green PC LED | J3 | Power LED & keylock | J9 |
|----------------+----------+---------------------+----------|
| Green PC | J4 | Green PC connector | J10 |
| connector | | | |
|----------------+----------+---------------------+----------|
| Turbo LED | J5 | Chassis fan power | J11 |
|----------------+----------+---------------------+----------|
| Turbo switch | J6 | 32-bit VESA local | SL1 & |
| | | bus slots | SL2 |
|----------------+----------+---------------------+----------|
| Reset switch | J7 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| | AMD CPU speed select 2x | J2 | Closed |
|---+----------------------------------+--------+------------|
| | AMD CPU speed select 3x | J2 | Open |
|---+----------------------------------+--------+------------|
| | AMD CPU type select DX2 | J12 | Open |
|---+----------------------------------+--------+------------|
| | AMD CPU type select DX4 | J12 | Closed |
|---+----------------------------------+--------+------------|
| | CMOS memory normal operation | JCP | Open |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | JCP | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select | JP1 | Open |
| | monochrome/EGA/VGA | | |
|---+----------------------------------+--------+------------|
| | Monitor type select color | JP1 | Closed |
|---+----------------------------------+--------+------------|
| | Factory configured - do not | JP2 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| | CPU type select all CPU types | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | CPU type select Cyrix CPU only | JP3 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 1MB | NONE | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 1MB | NONE | NONE | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 256K x | NONE | (1) 256K x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 2MB | NONE | NONE | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 2MB | NONE | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 256K x | (1) 256K x | (1) 256K x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 3MB | NONE | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 256K x | NONE | (1) 256K x | (1) 256K x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 4MB | NONE | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 4MB | NONE | NONE | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 256K x | (1) 1M x 36 | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 256K x | NONE | (1) 1M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 36 | NONE | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 5MB | NONE | (1) 256K x | (1) 1M x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 5MB | NONE | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 256K x | (1) 256K x | (1) 1M x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 256K x | (1) 1M x 36 | (1) 256K x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | NONE | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | NONE | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 256K x | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | 36 | | 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 | (1) 1M x 36 | NONE | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 8MB | NONE | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 8MB | NONE | NONE | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 1M x 36 | (1) 256K x | (1) 1M x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 1M x 36 | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 9MB | NONE | (1) 256K x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 9MB | (1) 256K x | NONE | (1) 1M x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 10MB | (1) 256K x | (1) 256K x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 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 | |
|------+-------------+-------------+------------+------------|
| 12MB | NONE | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | NONE | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 13MB | (1) 256K x | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 13MB | (1) 1M x 36 | (1) 256K x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | NONE | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | NONE | NONE | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 256K x | NONE | (1) 4M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 17MB | NONE | (1) 256K x | (1) 4M x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 17MB | NONE | (1) 4M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 256K x | (1) 256K x | (1) 4M x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 256K x | (1) 4M x 36 | (1) 256K x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 18MB | NONE | (1) 4M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 256K x | (1) 4M x 36 | (1) 256K x | (1) 256K x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 1M x 36 | NONE | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 20MB | NONE | (1) 1M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 20MB | NONE | (1) 4M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 256K x | (1) 1M x 36 | (1) 4M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 256K x | (1) 4M x 36 | (1) 1M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 1M x 36 | (1) 256K x | (1) 4M x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 1M x 36 | (1) 4M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 1M x 36 | (1) 4M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 4M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | NONE | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 25MB | (1) 256K x | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | 36 | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 1M x 36 | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | NONE | NONE | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | NONE | (1) 8M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | NONE | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 256K x | (1) 4M x 36 | (1) 4M x | NONE |
| | 36 | | 36 | |
|------+-------------+-------------+------------+------------|
| 33MB | NONE | (1) 256K x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 33MB | (1) 256K x | NONE | (1) 4M x | (1) 4M x |
| | 36 | | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 34MB | (1) 256K x | (1) 256K x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 36MB | NONE | (1) 1M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 36MB | (1) 1M x 36 | NONE | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 37MB | (1) 256K x | (1) 1M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 37MB | (1) 1M x 36 | (1) 256K x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | NONE | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 49MB | (1) 256K x | (1) 4M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 52MB | (1) 1M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | NONE | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 65MB | (1) 256K x | (1) 8M x | (1) 8M x | NONE |
| | 36 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 66MB | (1) 256K x | (1) 256K x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 66MB | (1) 256K x | (1) 8M x | (1) 256K x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 66MB | (1) 8M x 36 | (1) 8M x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 1M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 1M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 68MB | NONE | (1) 1M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 68MB | (1) 8M x 36 | (1) 8M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 69MB | (1) 256K x | (1) 8M x | (1) 1M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 69MB | (1) 1M x 36 | (1) 256K x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 69MB | (1) 1M x 36 | (1) 8M x | (1) 256K x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 8M x | (1) 1M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 8M x 36 | (1) 8M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 8M x 36 | (1) 4M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 8M x 36 | (1) 8M x | (1) 4M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 81MB | (1) 256K x | (1) 4M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 81MB | (1) 256K x | (1) 8M x | (1) 4M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 84MB | (1) 1M x 36 | (1) 4M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 84MB | (1) 1M x 36 | (1) 8M x | (1) 4M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | NONE |
| | | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 97MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 256K 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 or (1) 32K x 8 |
|------------+-------------------+---------------------------|
| 256KB | (4) 64K x 8 | (1) 32K x 8 |
|------------+-------------------+---------------------------|
| 512KB | (4) 128K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JS1 | JS2 |
|------------------+--------------------+--------------------|
| 128KB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 256KB | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 512KB | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JC1 | JC2 | JC3 | JC4 | JC5 |
|-------------+---------+---------+---------+--------+-------|
| CX486SX | 2 & 3 | 2 & 3 | 1 & 2 | Open | 2 & 3 |
|-------------+---------+---------+---------+--------+-------|
| 80486SX | 2 & 3 | 2 & 3 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| SL80486SX | 2 & 3 | 2 & 3 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| AM486DX | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| AM486DXSL | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| 80486DX | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| CX486DX | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| CX486DXV | 1 & 2 | 1 & 2 | 1 & 2 | Open | 2 & 3 |
|-------------+---------+---------+---------+--------+-------|
| CX486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| CX486DX2V | 1 & 2 | 1 & 2 | 1 & 2 | Open | 2 & 3 |
|-------------+---------+---------+---------+--------+-------|
| AM486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| AM486DX2SL | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| 80486DX2 | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| 80486DX4 | 1 & 2 | 1 & 2 | 1 & 2 | Open | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| P24CT | 1 & 2 | 1 & 2 | 1 & 2 | Closed | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| P24D | 1 & 2 | 1 & 2 | 1 & 2 | Closed | 1 & 2 |
|-------------+---------+---------+---------+--------+-------|
| P24T | 1 & 2 | 1 & 2 | 1 & 2 | Closed | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | RN16 | RN17 | RN18 | RN19 |
|------------+-----------+-----------+-----------+-----------|
| CX486SX | Installed | Not | Not | Not |
| | | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| 80486SX | Not | Not | Not | Installed |
| | installed | installed | installed | |
|------------+-----------+-----------+-----------+-----------|
| SL80486SX | Not | Not | Not | Installed |
| | installed | installed | installed | |
|------------+-----------+-----------+-----------+-----------|
| AM486DX | Not | Not | Installed | Not |
| | installed | installed | | installed |
|------------+-----------+-----------+-----------+-----------|
| CX486DX | Installed | Not | Not | Not |
| | | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| CX486DXV | Installed | Not | Not | Not |
| | | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX | Not | Not | Not | Installed |
| | installed | installed | installed | |
|------------+-----------+-----------+-----------+-----------|
| SL80486DX | Not | Not | Not | Installed |
| | installed | installed | installed | |
|------------+-----------+-----------+-----------+-----------|
| AM486DX2 | Not | Not | Installed | Not |
| | installed | installed | | installed |
|------------+-----------+-----------+-----------+-----------|
| CX486DX2 | Installed | Not | Not | Not |
| | | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| CX486DX2V | Installed | Not | Not | Not |
| | | installed | installed | installed |
|------------+-----------+-----------+-----------+-----------|
| 80486DX2 | Not | Not | Not | Installed |
| | installed | installed | installed | |
|------------+-----------+-----------+-----------+-----------|
| SL80486DX2 | Not | Not | Not | Installed |
| | installed | installed | installed | |
|------------+-----------+-----------+-----------+-----------|
| 80486DX4 | Not | Not | Not | Installed |
| | installed | installed | installed | |
|------------+-----------+-----------+-----------+-----------|
| AM486DX4 | Not | Not | Installed | Not |
| | installed | installed | | installed |
|------------+-----------+-----------+-----------+-----------|
| P24D | Not | Installed | Not | Installed |
| | installed | | installed | |
|------------+-----------+-----------+-----------+-----------|
| Pentium | Not | Installed | Not | Installed |
| Overdrive | installed | | installed | |
|------------------------------------------------------------|
| Note: The locations of RN16 - RN19 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JK1 | JK2 | JK3 | JK4 |
|---------+------------+------------+------------+-----------|
| 25MHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 33MHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 40MHz | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 50iMHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 50MHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 2 & |
| | closed | closed | closed | 3 closed |
|---------+------------+------------+------------+-----------|
| 66iMHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 75iMHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 100iMHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 1 & |
| | closed | closed | closed | 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JCV1 | JCV2 |
|------------------+--------------------+--------------------|
| 3v | pins 1 & 2 closed | Open |
|------------------+--------------------+--------------------|
| 3.3v | pins 2 & 3 closed | Open |
|------------------+--------------------+--------------------|
| 3.45v | Open | Open |
|------------------+--------------------+--------------------|
| 3.6v | Open | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 4v | Open | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JV1 |
|----------------------------+-------------------------------|
| 0 wait states | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 1 wait state | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JV2 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DAUGHTER BOARD CONFIGURATION |
|------------------------------------------------------------|
| Setting | CN6 |
|---------------+--------------------------------------------|
| Not installed | pins 1 & 2, 3 & 4, 13 & 14, 15 & 16 closed |
|---------------+--------------------------------------------|
| Installed | Closed |
+------------------------------------------------------------+