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# FIRST INTERNATIONAL COMPUTER, INC.
486-JAL REV. C
Processor 80486SX/80486DX/80486DX2
Processor 25/33/50(internal)/66(internal)MHz
Speed
Chip Set VIA
Max. Onboard 32MB
DRAM
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options PS/2 mouse port, parallel port, serial ports (2),
VGA port, VGA feature connector, floppy drive
interface, IDE interface, riser card
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------------+----------+---------------+----------|
| PS/2 mouse port | CN2 | VGA feature | J13 |
| | | connector | |
|----------------------+----------+---------------+----------|
| Serial port 1 | CN3 | Turbo switch | J19 |
|----------------------+----------+---------------+----------|
| Serial port 2 | CN4 | Turbo LED | J20 |
|----------------------+----------+---------------+----------|
| Parallel port | CN5 | Reset switch | J21 |
|----------------------+----------+---------------+----------|
| VGA port | CN6 | Speaker | J22 |
|----------------------+----------+---------------+----------|
| Floppy drive | CN8 | Power LED & | J23 |
| interface | | keylock | |
|----------------------+----------+---------------+----------|
| IDE interface | CN9 | IDE interface | J45 |
| | | LED | |
|----------------------+----------+---------------+----------|
| External battery | J9 | Riser Card | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select | J4 | Open |
| | monochrome/EGA/VGA | | |
|---+----------------------------------+--------+------------|
| | Monitor type select color | J4 | Closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | J5 | Open |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | J5 | Closed |
|---+----------------------------------+--------+------------|
| » | Password normal operation | J7 | Open |
|---+----------------------------------+--------+------------|
| | Password reset | J7 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Battery type select internal | J8 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery type select external | J8 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On board VGA enabled | J10 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | On board VGA disabled | J10 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | J11 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | IDE interface enabled | J24 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IDE interface disabled | J24 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JC5 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 1 |
|------------------------------------------------------------|
| 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) 4M x 36 | (1) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION 2 |
|------------------------------------------------------------|
| Size | Bank 0A | Bank 1 |
|---------------+------------------+-------------------------|
| 4MB | 4MB | NONE |
|---------------+------------------+-------------------------|
| 5MB | 4MB | (1) 256K x 36 |
|---------------+------------------+-------------------------|
| 8MB | 4MB | (1) 1M x 36 |
|---------------+------------------+-------------------------|
| 20MB | 4MB | (1) 4M x 36 |
|------------------------------------------------------------|
| Note: Bank 0A is factory installed and is not |
| configurable. Use either this table or the above table. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | NONE |
|------------------+--------------------+--------------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JC1 | JC2 | JC3 | JC4 |
|----------+------------------+------------+--------+--------|
| 80486SX | pins 2 & 3 | pins 2 & 3 | Open | Open |
| | closed | closed | | |
|----------+------------------+------------+--------+--------|
| 80486DX | pins 1 & 2 | pins 1 & 2 | Closed | Closed |
| | closed | closed | | |
|----------+------------------+------------+--------+--------|
| 80486DX2 | pins 1 & 2 | pins 1 & 2 | Closed | Closed |
| | closed | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JK1 |
|----------------------------+-------------------------------|
| 25MHz | pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 33MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 50iMHz | pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 66iMHz | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| HARD DRIVE SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | J16 | J17 |
|------------------+--------------------+--------------------|
| 0 | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 1 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 2 | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | J18 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE CONFIGURATION |
|------------------------------------------------------------|
| Type | JF1 | JF2 |
|------------------+--------------------+--------------------|
| 1.44MB | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 2.88MB | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|-------------------+--------------------+-------------------|
| 512KB | 512KB | NONE |
|-------------------+--------------------+-------------------|
| 1MB | 512KB | 512KB |
|-------------------+--------------------+-------------------|
| 2MB | 1MB | 1MB |
|------------------------------------------------------------|
| Note: The size of the VRAM chips are unidentified. |
+------------------------------------------------------------+