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# ICL
INDIANA C-SERIES/S-SERIES
Processor 80486SX/80486SX2/80486DX/80486DX2/AM486DX4/80486DX4
Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set Acer
Max. 36MB
Onboard
DRAM
Cache 128/256KB
BIOS Acer
Dimensions 295mm x 254mm
I/O PS/2 mouse port, parallel port, serial ports (2), VGA port,
Options VGA feature connector, floppy drive interface, IDE interface
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| VGA port | J1 | VGA feature | J6 |
| | | connector | |
|-----------------+----------+--------------------+----------|
| Parallel port | J2 | IDE interface 1 | J7 |
|-----------------+----------+--------------------+----------|
| Serial port 1 | J3 | IDE interface 2 | J8 |
|-----------------+----------+--------------------+----------|
| Serial port 2 | J4 | Floppy drive | J9 |
| | | interface | |
|-----------------+----------+--------------------+----------|
| PS/2 mouse port | J5 | DX4 voltage kit | JPX4 & |
| | | connectors | JPX5 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Normal BIOS startup display | JP1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | BIOS displays Acer logo | JP1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Password enabled | JP2 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Password disabled | JP2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Boot mode select normal boot | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Boot mode select mono/COM1 boot | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | First 8MB of memory enabled | JP4 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | First 8MB of memory disabled | JP4 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On-board memory enabled | JP5 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | On-board memory disabled | JP5 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Super I/O chip enabled | JP6 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Super I/O chip disabled | JP6 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | VGA port enabled | JP9 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | VGA port disabled | JP9 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IDE address port select 0F4h, | JP10 | pins 1 & 2 |
| | 0F8h, and 0FCh | | closed |
|---+----------------------------------+--------+------------|
| | IDE address port select 074h, | JP10 | pins 2 & 3 |
| | 078h, and 07Ch | | closed |
|---+----------------------------------+--------+------------|
| » | Reset button mode normal | JP28 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Reset button mode suspend/resume | JP28 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IDE interface enabled | JP29 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IDE interface disabled | JP29 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | BIOS type select EPROM | JPX1 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | BIOS type select flash | JPX1 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JPX3 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 4MB | (8) 441000 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 8MB | (8) 441000 | (1) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 12MB | (8) 441000 | (1) 1M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 20MB | (8) 441000 | (1) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 24MB | (8) 441000 | (1) 4M x 36 | (1) 1M x 36 |
|------------+---------------+---------------+---------------|
| 36MB | (8) 441000 | (1) 4M x 36 | (1) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 32K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP30 | JP31 |
|------------------+--------------------+--------------------|
| 128KB | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 256KB | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JPX2 | JP13 | JP14 | JP15 | JP17 |
|------------+---------+---------+---------+--------+--------|
| 80486SX | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------+---------+---------+---------+--------+--------|
| 80486SX2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------+---------+---------+---------+--------+--------|
| 80486DX | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------+---------+---------+---------+--------+--------|
| 80486DX2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------+---------+---------+---------+--------+--------|
| AM486DX4 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------+---------+---------+---------+--------+--------|
| 80486DX4 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Type | JP18 | JP19 | JP20 | JP21 | JP22 |
|------------+---------+---------+---------+--------+--------|
| 80486SX | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------+---------+---------+---------+--------+--------|
| 80486SX2 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------+---------+---------+---------+--------+--------|
| 80486DX | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
|------------+---------+---------+---------+--------+--------|
| 80486DX2 | 2 & 3 | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 |
|------------+---------+---------+---------+--------+--------|
| AM486DX4 | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------+---------+---------+---------+--------+--------|
| 80486DX4 | 1 & 2 | 1 & 2 | 2 & 3 | 2 & 3 | 2 & 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP23 | JP25 | JP26 | JP27 | JP32 |
|--------------+---------+--------+--------+--------+--------|
| 80486SX | 2 & 3 | 2 & 3 | 2 & 3 | 3 & 4 | 1 & 2 |
|--------------+---------+--------+--------+--------+--------|
| 80486SX2 | 2 & 3 | 2 & 3 | 2 & 3 | 3 & 4 | 1 & 2 |
|--------------+---------+--------+--------+--------+--------|
| 80486DX | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | 1 & 2 |
|--------------+---------+--------+--------+--------+--------|
| 80486DX2 | 2 & 3 | 2 & 3 | 1 & 2 | 3 & 4 | 1 & 2 |
|--------------+---------+--------+--------+--------+--------|
| AM486DX4 | 2 & 3 | 2 & 3 | 2 & 3 | 3 & 4 | 1 & 2 |
|--------------+---------+--------+--------+--------+--------|
| 80486DX4 | 2 & 3 | 2 & 3 | 2 & 3 | 3 & 4 | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
| The locations of JP27 & JP32 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP11 | JP12 |
|------------------+--------------------+--------------------|
| 25MHz | pins 1 & 5 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 33MHz | pins 2 & 6 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 50iMHz | pins 1 & 5 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 66iMHz | pins 2 & 6 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 75iMHz | pins 1 & 5 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 100iMHz | pins 2 & 6 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (80486DX4 ONLY) |
|------------------------------------------------------------|
| Speed | JP27 |
|----------------------------+-------------------------------|
| 2x | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 2.5x | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 3x | pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION (80486DX4-100 ONLY) |
|------------------------------------------------------------|
| Voltage | JMP1 |
|----------------------------+-------------------------------|
| 3.45v | pins 1 & 5 closed |
|----------------------------+-------------------------------|
| 3.6v | pins 2 & 6 closed |
|----------------------------+-------------------------------|
| 3.8v | pins 3 & 7 closed |
|----------------------------+-------------------------------|
| 4v | pins 4 & 8 closed |
|------------------------------------------------------------|
| Note: JMP1 is located on the voltage regulator. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT DMA CHANNEL CONFIGURATION |
|------------------------------------------------------------|
| » DRQ | DACK | JP7 | JP8 |
|----------+---------+-------------------+-------------------|
| » | 3 | 3 | pins 1 & 2 closed | pins 1 & 2 closed |
|---+------+---------+-------------------+-------------------|
| » | 3 | 1 | pins 1 & 2 closed | pins 2 & 3 closed |
|---+------+---------+-------------------+-------------------|
| » | 1 | 3 | pins 2 & 3 closed | pins 1 & 2 closed |
|---+------+---------+-------------------+-------------------|
| » | 1 | 1 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+