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# FIRST INTERNATIONAL COMPUTER, INC.
486-PIO-3
Processor 80486SX/UMCU5SD/CX486DX/80486DX/UMCU5S/UMCU5SLV/
CX486DX2/AM486DX2/(SL)AM486DX2/80486DX2/80486DX4ODP/
CX486DX4/AM486DX4/(SL)AM486DX4/80486DX4/AM X5/P24D/
P24S/P24T/CX5X86
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/
Speed 100(internal)/120(internal)/133(internal)MHz
Chip Set VIA
Video Chip None
Set
Maximum 64MB
Onboard
Memory
Maximum None
Video
Memory
Cache 128/256/512/1024KB
BIOS Award
Dimensions 254mm x 218mm
I/O 32-bit PCI slots (3), floppy drive interface, green PC
Options connector, IDE interfaces (2), parallel port, serial ports (2),
IR connector
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|--------------------+----------+-----------------+----------|
| External battery | BAT | Serial port 1 | CN1 |
|--------------------+----------+-----------------+----------|
| Green PC connector | C3 | Serial port 2 | CN2 |
|--------------------+----------+-----------------+----------|
| Outlet connector | C4 | Parallel port | CN3 |
|--------------------+----------+-----------------+----------|
| Turbo/green PC LED | C5 | Floppy drive | CN4 |
| | | interface | |
|--------------------+----------+-----------------+----------|
| IDE interface LED | C6 | IDE interface 2 | CN5 |
|--------------------+----------+-----------------+----------|
| Reset switch | C7 | IDE interface 1 | CN6 |
|--------------------+----------+-----------------+----------|
| Power LED & | C8 | IR connector | IR |
| keylock | | | |
|--------------------+----------+-----------------+----------|
| Speaker | C9 | 32-bit PCI | PC1 - |
| | | slots | PC3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| » | Flash BIOS type select Intel | J1 | Pins 1 & 2 |
| | 28F00BX-T1 | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS type select SST | J1 | Pins 2 & 3 |
| | 29EE010 | | closed |
|---+-----------------------------------+-------+------------|
| » | KB_LOCK mode select KB_LOCK | J2 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | KB_LOCK mode select IOCHCK | J2 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | Turbo LED used as turbo LED | J3 | Open |
|---+-----------------------------------+-------+------------|
| | Turbo LED used as green PC LED | J3 | Closed |
|---+-----------------------------------+-------+------------|
| » | Password normal operation | JCP | Open |
|---+-----------------------------------+-------+------------|
| | Password clear | JCP | Closed |
|---+-----------------------------------+-------+------------|
| » | Parallel port unidirectional | JI1 | Open |
|---+-----------------------------------+-------+------------|
| | Parallel port bidirectional | JI1 | Closed |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP1 | Open |
|---+-----------------------------------+-------+------------|
| » | Factory configured - do not alter | JP2 | Open |
|---+-----------------------------------+-------+------------|
| » | Monitor type select | VIDEO | Open |
| | monochrome/EGA/VGA | | |
|---+-----------------------------------+-------+------------|
| | Monitor type select CGA | VIDEO | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (1) 256K x 36 | None |
|------------------+--------------------+--------------------|
| 2MB | (1) 256K x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (1) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 5MB | (1) 1M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 17MB | (1) 4M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (1) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 33MB | (1) 8M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 36MB | (1) 8M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (1) 8M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|-----------+--------------+--------------+------------------|
| 128KB | (4) 32K x 8 | None | (1) 8K/32K x 8 |
|-----------+--------------+--------------+------------------|
| 256KB (A) | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
|-----------+--------------+--------------+------------------|
| 256KB (B) | (4) 64K x 8 | None | (1) 32K x 8 |
|-----------+--------------+--------------+------------------|
| 512KB (A) | (4) 128K x 8 | None | (1) 32K x 8 |
|-----------+--------------+--------------+------------------|
| 512KB (B) | (4) 64K x 8 | (4) 64K x 8 | (1) 32K/64K x 8 |
|-----------+--------------+--------------+------------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (1) 64K/128K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JS1 | JS2 | JS3 | JS4 | JS5 | JS6 |
|-----------+--------+-------+-------+-------+-------+-------|
| 128KB | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-----------+--------+-------+-------+-------+-------+-------|
| 256KB (A) | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-----------+--------+-------+-------+-------+-------+-------|
| 256KB (B) | 2 & 3 | 2 & 3 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 |
|-----------+--------+-------+-------+-------+-------+-------|
| 512KB (A) | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
|-----------+--------+-------+-------+-------+-------+-------|
| 512KB (B) | 2 & 3 | 2 & 3 | 2 & 3 | 1 & 2 | 2 & 3 | 1 & 2 |
|-----------+--------+-------+-------+-------+-------+-------|
| 1MB | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 1 & 2 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & |
| | closed | closed | closed | 2 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 |
|---------+------------+------------+------------+-----------|
| 120iMHz | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 133iMHz | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & |
| | closed | closed | closed | 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JC1 | JC2 | JC3 | JC4 | JC5 |
|---------------+--------+--------+---------+-------+--------|
| 80486SX | 2 & 3 | 2 & 3 | Open | Open | Open |
|---------------+--------+--------+---------+-------+--------|
| UMC U5SD | 1 & 2 | 1 & 2 | Open | Open | Open |
|---------------+--------+--------+---------+-------+--------|
| CX486DX | 1 & 2 | 1 & 2 | Open | Open | Open |
|---------------+--------+--------+---------+-------+--------|
| 80486DX | 1 & 2 | 1 & 2 | Open | 2 & 3 | Open |
|---------------+--------+--------+---------+-------+--------|
| U5S | 2 & 3 | 2 & 3 | Open | Open | Open |
|---------------+--------+--------+---------+-------+--------|
| U5SLV | 2 & 3 | 2 & 3 | Open | Open | Open |
|---------------+--------+--------+---------+-------+--------|
| CX486DX2 | 1 & 2 | 1 & 2 | Open | Open | Open |
|---------------+--------+--------+---------+-------+--------|
| AM486DX2 | 1 & 2 | 1 & 2 | Closed | Open | Open |
|---------------+--------+--------+---------+-------+--------|
| (SL)AM486DX2 | 1 & 2 | 1 & 2 | Open | 2 & 3 | Open |
|---------------+--------+--------+---------+-------+--------|
| 80486DX2 | 1 & 2 | 1 & 2 | Open | 2 & 3 | Open |
|---------------+--------+--------+---------+-------+--------|
| CX486DX4 | 1 & 2 | 1 & 2 | Open | 1 & 2 | Open |
|---------------+--------+--------+---------+-------+--------|
| AM486DX4 | 1 & 2 | 1 & 2 | Open | Open | Open |
|---------------+--------+--------+---------+-------+--------|
| (SL)AM486DX4 | 1 & 2 | 1 & 2 | Open | 1 & 2 | Open |
|---------------+--------+--------+---------+-------+--------|
| 80486DX4ODP | 1 & 2 | 1 & 2 | Open | 1 & 2 | Open |
|---------------+--------+--------+---------+-------+--------|
| 80486DX4 (2x) | 1 & 2 | 1 & 2 | Open | 2 & 3 | Open |
|---------------+--------+--------+---------+-------+--------|
| 80486DX4 (3x) | 1 & 2 | 1 & 2 | Open | 1 & 2 | Open |
|---------------+--------+--------+---------+-------+--------|
| AM X5 | 1 & 2 | 1 & 2 | Open | 2 & 3 | Open |
|---------------+--------+--------+---------+-------+--------|
| P24D | 1 & 2 | 1 & 2 | Open | 1 & 2 | Open |
|---------------+--------+--------+---------+-------+--------|
| P24S | 1 & 2 | 1 & 2 | Open | 2 & 3 | Open |
|---------------+--------+--------+---------+-------+--------|
| P24T | 1 & 2 | 1 & 2 | Open | 1 & 2 | Closed |
|---------------+--------+--------+---------+-------+--------|
| CX5X86 | 1 & 2 | 1 & 2 | Open | 1 & 2 | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | RNA | RNC | RNI |
|---------------+------------+------------+------------------|
| 80486SX | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| UMC U5SD | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| CX486DX | Not | Installed | Not installed |
| | installed | | |
|---------------+------------+------------+------------------|
| 80486DX | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| U5S | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| U5SLV | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| CX486DX2 | Not | Installed | Not installed |
| | installed | | |
|---------------+------------+------------+------------------|
| AM486DX2 | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| (SL)AM486DX2 | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| 80486DX2 | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| CX486DX4 | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| AM486DX4 | Installed | Not | Not installed |
| | | installed | |
|---------------+------------+------------+------------------|
| (SL)AM486DX4 | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| 80486DX4ODP | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| 80486DX4 (2x) | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| 80486DX4 (3x) | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| AM X5 | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| P24D | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| P24S | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| P24T | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
|---------------+------------+------------+------------------|
| CX5X86 | Not | Not | Pins 1 - 8 |
| | installed | installed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | CN3V | JPW1 | JPW2 |
|-----------+----------------------+------------+------------|
| | 3.3v | Open | Pins 1 & 2 | Open |
| | | | closed | |
|---+-------+----------------------+------------+------------|
| | 3.45v | Open | Pins 2 & 3 | Open |
| | | | closed | |
|---+-------+----------------------+------------+------------|
| | 3.6v | Open | Open | Pins 1 & 2 |
| | | | | closed |
|---+-------+----------------------+------------+------------|
| | 4v | Open | Open | Pins 1 & 2 |
| | | | | closed |
|---+-------+----------------------+------------+------------|
| » | 5v | Pins 1 & 2, 3 & 4 | N/A | N/A |
| | | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PCI BUS CLOCK SELECTION |
|------------------------------------------------------------|
| CPU Clock | JCK | JT1 |
|----------------------------------+------------+------------|
| » | <= 33MHz (PCI clock = CPU | Pins 1 & 2 | Pins 1 & 2 |
| | clock) | closed | closed |
|---+------------------------------+------------+------------|
| | >33 MHz (PCI clock = CPU | Pins 2 & 3 | Pins 2 & 3 |
| | clock/2) | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | JW3 | JW4 |
|------------------+--------------------+--------------------|
| » | 1 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|----+-------------+--------------------+--------------------|
| | 3 | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 SELECTION |
|------------------------------------------------------------|
| Setting | JW1 | JW2 |
|--------------------+-------------------+-------------------|
| Used as serial | Pins 1 & 2 closed | Pins 1 & 2 closed |
| port 2 | | |
|--------------------+-------------------+-------------------|
| Used as IR | Pins 2 & 3 closed | Pins 2 & 2 closed |
| connector | | |
+------------------------------------------------------------+