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# EPSON, INC.
ACTION TOWER 3000
Processor 80486SX/80487SX/80486SX2/80486DX/80486DX2/80486DX4/Pentium
Overdrive
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set Unidentified
Max. 64MB
Onboard
DRAM
Cache 64/128/256KB
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Floppy drive interface, game port, IDE interface, parallel port,
Options PS/2 mouse port, serial ports (2), VGA port
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| PS/2 mouse port | CN1 | VGA port | CN6 |
|-----------------+----------+--------------------+----------|
| Game interface | CN2 | Floppy drive | CN7 |
| | | interface | |
|-----------------+----------+--------------------+----------|
| Serial port 1 | CN3 | IDE interface | CN8 |
|-----------------+----------+--------------------+----------|
| Serial port 2 | CN4 | External battery | J30 |
|-----------------+----------+--------------------+----------|
| Parallel port | CN5 | Riser Card | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|-------------------------------------+--------+-------------|
| » | Game interface disabled | J4 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Game interface enabled | J4 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Parallel port LPT select LPT1 | J5 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Parallel port LPT select LPT2 | J5 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Serial port 1 COM select COM1 | J6 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Serial port 1 COM select COM3 | J6 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Serial port 2 COM select COM2 | J7 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Serial port 2 COM select COM4 | J7 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Floppy drive interface enabled | J8 | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Floppy drive interface disabled | J8 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | VGA interrupt enabled | J10 | Closed |
|---+---------------------------------+--------+-------------|
| | VGA interrupt disabled | J10 | Open |
|---+---------------------------------+--------+-------------|
| » | Battery type select internal | J30 | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Battery type select external | J30 | Closed |
|---+---------------------------------+--------+-------------|
| | CMOS memory clear | J30 | pins 3 & 4 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Parallel port enabled | JA | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Parallel port disabled | JA | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Serial port 1 enabled | JC | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Serial port 1 disabled | JC | pins 2 & 3 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| » | Serial port 2 enabled | JD | pins 1 & 2 |
| | | | closed |
|---+---------------------------------+--------+-------------|
| | Serial port 2 disabled | JD | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (1) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 2MB | (1) 256K x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 2MB | (1) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 3MB | (1) 512K x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 3MB | (1) 256K x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (1) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 5MB | (1) 1M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (1) 1M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 8MB | (1) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 9MB | (1) 2M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (1) 2M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (1) 2M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 4M x 36 | NONE |
|------------------+--------------------+--------------------|
| 17MB | (1) 4M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 18MB | (1) 4M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (1) 4M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 32MB | (1) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 33MB | (1) 8M x 36 | (1) 256K x 36 |
|------------------+--------------------+--------------------|
| 34MB | (1) 8M x 36 | (1) 512K x 36 |
|------------------+--------------------+--------------------|
| 36MB | (1) 8M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (1) 8M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (1) 8M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 36 | (1) 8M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J23 | J24 | J25 | J26 |
|-------+-------------+------------+------------+------------|
| 64KB | pins 1 & 2 | pins 1 & 2 | Open | pins 2 & 3 |
| | closed | closed | | closed |
|-------+-------------+------------+------------+------------|
| 128KB | pins 2 & 3 | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed | closed |
|-------+-------------+------------+------------+------------|
| 256KB | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | J11 | J13 |
|-------------------+--------------------+-------------------|
| 80486SX | Open | pins 2 & 3 closed |
|-------------------+--------------------+-------------------|
| 80487SX | pins 2 & 3 closed | pins 1 & 2, 3 & 4 |
| | | closed |
|-------------------+--------------------+-------------------|
| 80486SX2 | pins 1 & 2 closed | pins 2 & 3 closed |
| | or Open | |
|-------------------+--------------------+-------------------|
| 80486DX | pins 1 & 2 closed | pins 1 & 2, 3 & 4 |
| | | closed |
|-------------------+--------------------+-------------------|
| 80486DX2 | pins 1 & 2 closed | pins 1 & 2, 3 & 4 |
| | | closed |
|-------------------+--------------------+-------------------|
| 80486DX4 | pins 1 & 2 closed | pins 1 & 2, 3 & 4 |
| | | closed |
|-------------------+--------------------+-------------------|
| Pentium Overdrive | pins 2 & 3 closed | pins 1 & 2, 3 & 4 |
| | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | J17 |
|----------------------------+-------------------------------|
| 25MHz | pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 33MHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 40MHz | pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| 50iMHz | pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 50MHz | pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 66iMHz | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 75iMHz | pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 100iMHz | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | J31 | J33 |
|------------+--------------------------+--------------------|
| 3.3/3.45v | pins 5 & 6, 7 & 8 closed | pins 1 & 2 closed |
|------------+--------------------------+--------------------|
| 3.6v | pins 5 & 6, 7 & 8 closed | pins 2 & 3 closed |
|------------+--------------------------+--------------------|
| 5v | pins 1 & 2, 3 & 4 closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO CONFIGURATION |
|------------------------------------------------------------|
| Setting | J14 | J15 |
|-----------------------+------------------+-----------------|
| On board VGA enabled | Closed | Closed |
|-----------------------+------------------+-----------------|
| On board VGA disabled | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE INTERFACE CONFIGURATION |
|------------------------------------------------------------|
| Setting | JB | JE |
|------------------+--------------------+--------------------|
| Enabled | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Disabled | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+