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# FIRST INTERNATIONAL COMPUTER, INC.
486-PIO-2 (REV. A2)
Processor 80486SX/CX486DX/SL80486DX/UMCU5SD/UMCU5S/UMCU5SLV/
CX486DX2/AM486DX2/(SL)AM486DX2/SL80486DX2/AM486DX4/
(SL)AM486DX4/80486FX4/P24D/P24S/P24T/CXM1
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed 100(internal)MHz
Chip Set VIA
Video Chip None
Set
Maximum 128MB
Onboard
Memory
Maximum None
Video
Memory
Cache 128/256/512KB
BIOS Award
Dimensions 330mm x 218mm
I/O 32-bit PCI slots (4), floppy drive interface, green PC
Options connector, IDE interfaces (2), parallel port, serial ports (2)
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Floppy drive | CN1 | External battery | J6 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Parallel port | CN2 | Green PC | J7 |
| | | connector | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN3 | Chassis fan | J8 |
| | | power | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN4 | Power LED & | J9 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN5 | Speaker | J10 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | Reset switch | J11 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J3 | Turbo switch | J12 |
|-------------------+----------+------------------+----------|
| Green PC LED | J4 | Turbo LED | J13 |
|-------------------+----------+------------------+----------|
| Outlet connector | J5 | 32-bit PCI slots | PC1 - |
| | | | PC4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------------+-------+----------|
| » | Monitor type select | J1 | Open |
| | monochrome/EGA/VGA | | |
|---+-------------------------------------+-------+----------|
| | Monitor type select CGA | J1 | Closed |
|---+-------------------------------------+-------+----------|
| » | Password normal operation | J2 | Open |
|---+-------------------------------------+-------+----------|
| | Password clear | J2 | 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) 1M x 36 | (1) 256K x | (1) 256K x | None |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 256K x | (1) 1M x 36 | (1) 256K x | None |
| | 36 | | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 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 | None | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | None | (1) 1M x 36 | (1) 1M x | None |
| | | | 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 | (1) 4M x 36 | None | None |
| | 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) 4M x 36 | (1) 1M x | None |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 20MB | None | (1) 1M x 36 | (1) 4M 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 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 24MB | None | (1) 4M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 25MB | (1) 256K x | (1) 4M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 28MB | (1) 1M x 36 | (1) 4M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 33MB | (1) 256K x | (1) 4M x | (1) 4M x | None |
| | 36 | 36 | 36 | |
|-------+-------------+------------+------------+------------|
| 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) 16M x | None | 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 | 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) 1M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 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) 256K x | (1) 8M x | (1) 8M x | (1) 8M x |
| | 36 | 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) 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 SPEED SELECTION |
|------------------------------------------------------------|
| 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 |
|---------+------------+------------+------------+-----------|
| 80iMHz | Pins 1 & 2 | 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 TYPE SELECTION |
|------------------------------------------------------------|
| Type | JC2 | JC3 | JC4 | JC5 |
|--------------+------------+-----------+-----------+--------|
| 80486SX | Open | Pins 2 & | Pins 2 & | Open |
| | | 3 closed | 3 closed | |
|--------------+------------+-----------+-----------+--------|
| CX486DX | Open | Pins 1 & | Pins 1 & | Open |
| | | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| SL80486DX | Pins 2 & 3 | Pins 1 & | Pins 1 & | Open |
| | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| UMCU5SD | Open | Pins 1 & | Pins 1 & | Open |
| | | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| UMCU5S | Open | Pins 2 & | Pins 2 & | Open |
| | | 3 closed | 3 closed | |
|--------------+------------+-----------+-----------+--------|
| UMCU5SLV | Open | Pins 2 & | Pins 2 & | Open |
| | | 3 closed | 3 closed | |
|--------------+------------+-----------+-----------+--------|
| CX486DX2 | Open | Pins 1 & | Pins 1 & | Open |
| | | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| AM486DX2 | Open | Pins 1 & | Pins 1 & | Open |
| | | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| (SL)AM486DX2 | Pins 2 & 3 | Pins 1 & | Pins 1 & | Open |
| | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| SL80486DX2 | Pins 2 & 3 | Pins 1 & | Pins 1 & | Open |
| | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| AM486DX4 | Open | Pins 1 & | Pins 1 & | Open |
| | | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| (SL)AM486DX4 | Pins 1 & 2 | Pins 1 & | Pins 1 & | Open |
| | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| 80486DX4 | Pins 1 & 2 | Pins 1 & | Pins 1 & | Open |
| (ODP) | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| 80486DX4 | Pins 2 & 3 | Pins 1 & | Pins 1 & | Open |
| (2x) | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| 80486DX4 | Pins 1 & 2 | Pins 1 & | Pins 1 & | Open |
| (3x) | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| P24D | Pins 1 & 2 | Pins 1 & | Pins 1 & | Open |
| | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| P24S | Pins 2 & 3 | Pins 1 & | Pins 1 & | Open |
| | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| P24T | Pins 1 & 2 | Pins 1 & | Pins 1 & | Closed |
| | closed | 2 closed | 2 closed | |
|--------------+------------+-----------+-----------+--------|
| CXM1 | Pins 1 & 2 | Pins 1 & | Pins 1 & | Open |
| | closed | 2 closed | 2 closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | RNA | RNC | RNI |
|---------------+------------+------------+------------------|
| 80486SX | Not | Not | Pins 1 - 5 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| CX486DX | Not | Installed | Not installed |
| | installed | | |
|---------------+------------+------------+------------------|
| SL80486DX | Not | Not | Pins 1 - 5 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| UMCU5SD | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| UMCU5S | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| UMCU5SLV | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| CX486DX2 | Not | Installed | Not installed |
| | installed | | |
|---------------+------------+------------+------------------|
| AM486DX2 | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| (SL)AM486DX2 | Not | Not | Pins 6 - 10 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| SL80486DX2 | Not | Not | Pins 1 - 5 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| AM486DX4 | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| (SL)AM486DX4 | Not | Not | Pins 6 - 10 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| 80486DX4 | Not | Not | Pins 1 - 5 |
| (ODP) | installed | installed | closed |
|---------------+------------+------------+------------------|
| 80486DX4 (2x) | Not | Not | Pins 1 - 5 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| 80486DX4 (3x) | Not | Not | Pins 1 - 5 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| P24D | Not | Not | Pins 1 - 5 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| P24S | Not | Not | Pins 1 - 5 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| P24T | Not | Not | Pins 1 - 5 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| CXM1 | Not | Not | Pins 6 - 10 |
| | installed | installed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | CN3V | JPW1 | JPW2 |
|----------+---------------------------------+-------+-------|
| 3.3v | Open | 1 & 2 | Open |
|----------+---------------------------------+-------+-------|
| 3.45v | Open | 2 & 3 | Open |
|----------+---------------------------------+-------+-------|
| 3.6v | Open | Open | 1 & 2 |
|----------+---------------------------------+-------+-------|
| 4v | Open | Open | 2 & 3 |
|----------+---------------------------------+-------+-------|
| 5v | 1, & 2, 3 & 4, 13 & 14, 15 & 16 | N/A | N/A |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI-BUS CLOCK SELECTION |
|------------------------------------------------------------|
| CPU clock | JCK | JT1 |
|------------------+--------------------+--------------------|
| <= 33MHz | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| >33 MHz | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | JEPP1 | JEPP2 |
|------------------+--------------------+--------------------|
| » | 1 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|----+-------------+--------------------+--------------------|
| | 3 | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| KEYBOARD SELECTION |
|------------------------------------------------------------|
| Setting | JX3 | RN1 | RN16 | RN19 |
|------------------+--------+----------+----------+----------|
|»| Internal |Pins 1 &| Not |Installed | Not |
| | controller |2 closed|installed | |installed |
|-+----------------+--------+----------+----------+----------|
| | External |Pins 2 &|Installed | Not |Installed |
| | controller |3 closed| |installed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PRINTER PORT SELECTION |
|------------------------------------------------------------|
| Setting | JH | JG |
|--------------------+-------------------+-------------------|
| » | Output | Pins 2 & 3 closed | Pins 2 & 3 closed |
|---+----------------+-------------------+-------------------|
| | Input | Pins 1 & 2 closed | Pins 1 & 2 closed |
|---+----------------+-------------------+-------------------|
| | Bidirectional | Pins 2 & 3 closed | N/A |
+------------------------------------------------------------+