(TXT) View Source
# FIRST INTERNATIONAL COMPUTER, INC.
486-VAL
Processor 80486SX/80487SX/80486DX/80486DX2
Processor 20/25/33/50(internal)/50/66(internal)MHz
Speed
Chip Set VIA
Max. Onboard 64MB
DRAM
Cache 64/128/256KB
BIOS AMI
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, IDE interface, parallel
port, PS/2 mouse port,
serial ports (2), VGA feature connector, VGA port
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN1 | IDE interface | CN10 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN3 | IDE interace LED | J4 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN4 | Turbo LED | J7 |
|-------------------+----------+------------------+----------|
| Parallel port | CN5 | Turbo switch | J8 |
|-------------------+----------+------------------+----------|
| VGA port | CN6 | Reset switch | J9 |
|-------------------+----------+------------------+----------|
| Video feature | CN7 | Speaker | J10 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN9 | Power LED & | J11 |
| interface | | keylock | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Real time clock normal operation | J1 | Open |
|---+----------------------------------+--------+------------|
| | Real time clock clear | J1 | Closed |
|---+----------------------------------+--------+------------|
| » | Flash BIOS write protect enabled | J2 | Open |
|---+----------------------------------+--------+------------|
| | Flash BIOS write protect | J2 | Closed |
| | disabled | | |
|---+----------------------------------+--------+------------|
| » | Monitor type select color | J13 | Closed |
|---+----------------------------------+--------+------------|
| | Monitor type select monochrome, | J13 | Open |
| | VGA or EGA | | |
|---+----------------------------------+--------+------------|
| » | I/O channel ready enabled | J30 | Closed |
|---+----------------------------------+--------+------------|
| | I/O channel ready disabled | J30 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JF1 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JF2 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JF3 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Keyboard IRQ set for AMI 8042 KF | JI1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Keyboard IRQ set for another | JI1 | pins 2 & 3 |
| | version | | closed |
|---+----------------------------------+--------+------------|
| » | PS/2 mouse IRQ set for AMI 8042 | JI2 | pins 1 & 2 |
| | KF | | closed |
|---+----------------------------------+--------+------------|
| | PS/2 mouse IRQ set for another | JI2 | pins 2 & 3 |
| | version | | closed |
|---+----------------------------------+--------+------------|
| » | Local type tri-state | JV2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Local type level | JV2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Local access for DAC enabled | JV3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | A10 busline for DAC enabled | JV3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Local bus select 86C805 enabled | JV4 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Local bus select 86C805 disabled | JV4 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JV8 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Video interrupt select IRQ5 | JV9 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Video interrupt select IRQ9 | JV9 | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 | | |
|------+-------------+-------------+------------+------------|
| 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) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 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 |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 4M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CONTINUED) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG/M9 | TAG/M14 |
|--------+-------------+-------------+-------------+---------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 | NONE |
|--------+-------------+-------------+-------------+---------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 | NONE |
|--------+-------------+-------------+-------------+---------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JS1 | JS2 |
|------------------+--------------------+--------------------|
| 64KB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 128KB | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 256KB | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE/SPEED CONFIGURATION |
|------------------------------------------------------------|
| Type/Speed | JC1 | JC2 | JC3 | JC4 | JK1 | JK2 |
|--------------+-------+-------+-------+-------+------+------|
| 80486SX/20 | pins | pins | pins | Open | pins | pins |
| | 2 & 3 | 2 & 3 | 2 & 3 | | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------------+-------+-------+-------+-------+------+------|
| 80486SX/25 | pins | pins | pins | Open | pins | pins |
| | 2 & 3 | 2 & 3 | 2 & 3 | | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------------+-------+-------+-------+-------+------+------|
| 80486SX/33 | pins | pins | pins | Open | pins | pins |
| | 2 & 3 | 2 & 3 | 2 & 3 | | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------------+-------+-------+-------+-------+------+------|
| 80487SX/20 | pins | pins | pins | pins | pins | pins |
| | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------------+-------+-------+-------+-------+------+------|
| 80487SX/25 | pins | pins | pins | pins | pins | pins |
| | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------------+-------+-------+-------+-------+------+------|
| 80486DX/20 | pins | pins | pins | pins | pins | pins |
| | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------------+-------+-------+-------+-------+------+------|
| 80486DX/25 | pins | pins | pins | pins | pins | pins |
| | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------------+-------+-------+-------+-------+------+------|
| 80486DX/33 | pins | pins | pins | pins | pins | pins |
| | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------------+-------+-------+-------+-------+------+------|
| 80486DX/50 | pins | pins | pins | pins | pins | pins |
| | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------------+-------+-------+-------+-------+------+------|
| 80486DX2/50i | pins | pins | pins | pins | pins | pins |
| | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------------+-------+-------+-------+-------+------+------|
| 80486DX2/66i | pins | pins | pins | pins | pins | pins |
| | 1 & 2 | 1 & 2 | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|------------------------------------------------------------|
| Note:Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR TYPE SELECT |
|------------------------------------------------------------|
| Type | JV5 | JV6 | JV7 |
|---------------+--------------+--------------+--------------|
| 640 x | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| 480/60Hz | closed | closed | closed |
|---------------+--------------+--------------+--------------|
| 640 x | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| 480/70Hz | closed | closed | closed |
|---------------+--------------+--------------+--------------|
| 800 x | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 |
| 600/60Hz | closed | closed | closed |
|---------------+--------------+--------------+--------------|
| 800 x | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 |
| 600/70Hz | closed | closed | closed |
|---------------+--------------+--------------+--------------|
| 800 x | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| 600/56Hz | closed | closed | closed |
|---------------+--------------+--------------+--------------|
| 1024 x | pins 1 & 2 | pins 2 & 3 | pins 1 & 2 |
| 768/43Hz | closed | closed | closed |
|---------------+--------------+--------------+--------------|
| 1024 x | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 |
| 768/60Hz | closed | closed | closed |
|---------------+--------------+--------------+--------------|
| 1024 x | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| 768/70Hz | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | JV1 |
|----------+--------------+--------------+-------------------|
| 512KB | (4) 44256 | None | pins 1 & 2 closed |
|----------+--------------+--------------+-------------------|
| 1MB | (4) 44256 | (4) 44256 | pins 2 & 3 closed |
+------------------------------------------------------------+