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# EPSON, INC.
ACTION PC 2600, ACTION PC 5500
Processor 80846DX/CX486DX2/80486DX2/SL80486DX2/AM486DX4/
80486DX4/P24D/P24T/CX M1SC
Processor 25/33/50(internal)/66(internal)/75(internal)/100(internal)/MHz
Speed
Chip Set Unidentified
Video Chip Trident
Set
Maximum 132MB
Onboard
Memory
Maximum 1MB
Video
Memory
Cache 128/256KB
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Floppy drive interface, IDE interfaces (2), parallel port,
Options PS/2 mouse port, serial ports (2), VGA feature connector, VGA
port, riser slot
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|---------------------+----------+----------------+----------|
| IDE interface 1 | CN1 | Serial port 1 | CN11 |
|---------------------+----------+----------------+----------|
| IDE interface 2 | CN2 | Serial port 2 | CN12 |
|---------------------+----------+----------------+----------|
| IDE interface LED | CN3 | Parallel port | CN13 |
|---------------------+----------+----------------+----------|
| Power LED | CN4 | Riser slot | SL1 |
|---------------------+----------+----------------+----------|
| PS/2 mouse port | CN8 | VGA port | VNC1 |
|---------------------+----------+----------------+----------|
| Floppy drive | CN10 | VGA feature | VNC3 |
| interface | | connector | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP28 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP28 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP29 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP34 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP35 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | VJ1 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Monitor type select interlaced | VJ3 | Closed |
|---+---------------------------------+-------+--------------|
| | Monitor type select non | VJ3 | Open |
| | interlaced | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | VJ4 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | On board video enabled | VJP1 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | On board video disabled | VJP1 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|----------+-----------+------------------+------------------|
| 4MB | 4MB | None | None |
|----------+-----------+------------------+------------------|
| 5MB | 4MB | (1) 256K x 32 | None |
|----------+-----------+------------------+------------------|
| 6MB | 4MB | (1) 256K x 32 | (1) 256K x 32 |
|----------+-----------+------------------+------------------|
| 6MB | 4MB | (1) 512K x 32 | None |
|----------+-----------+------------------+------------------|
| 8MB | 4MB | (1) 512K x 32 | (1) 512K x 32 |
|----------+-----------+------------------+------------------|
| 8MB | 4MB | (1) 1M x 32 | None |
|----------+-----------+------------------+------------------|
| 12MB | 4MB | (1) 1M x 32 | (1) 1M x 32 |
|----------+-----------+------------------+------------------|
| 12MB | 4MB | (1) 2M x 32 | None |
|----------+-----------+------------------+------------------|
| 20MB | 4MB | (1) 2M x 32 | (1) 2M x 32 |
|----------+-----------+------------------+------------------|
| 20MB | 4MB | (1) 4M x 32 | None |
|----------+-----------+------------------+------------------|
| 36MB | 4MB | (1) 4M x 32 | (1) 4M x 32 |
|----------+-----------+------------------+------------------|
| 36MB | 4MB | (1) 8M x 32 | None |
|----------+-----------+------------------+------------------|
| 68MB | 4MB | (1) 8M x 32 | (1) 8M x 32 |
|----------+-----------+------------------+------------------|
| 68MB | 4MB | (1) 16M x 32 | None |
|----------+-----------+------------------+------------------|
| 132MB | 4MB | (1) 16M x 32 | (1) 16M x 32 |
|------------------------------------------------------------|
| Note: Bank 0 is factory installed and is not configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------------------------------------------------|
| Note: The location of banks 0 & 1 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP19 | JP20 | JP21 |
|-------+-----------------+-----------------+----------------|
| None | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 128KB | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 256KB | Pins 1 & 2 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|-----------------+------------------------+-----------------|
| 512KB | 512KB | None |
|-----------------+------------------------+-----------------|
| 1MB | 512KB | 512KB |
|------------------------------------------------------------|
| Note: Bank 0 is factory installed and is not |
| configurable. The size of the upgrade chips is |
| unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | JP24 | JP25 |
|------------------+--------------------+--------------------|
| 25MHz | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 33MHz | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 50iMHz | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 66iMHz | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 75iMHz | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 100iMHz | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP1 | JP2 | JP3 | JP4 | JP5 | JP6 |
|------------+--------+-------+-------+------+-------+-------|
| 80486DX | 1 & 2, | 3 & 4 | Open | 2 & | 1 & 2 | 2 & 3 |
| | 3 & 4 | | | 3, 4 | | |
| | | | | & 5 | | |
|------------+--------+-------+-------+------+-------+-------|
| CX486DX2 | 1 & 2, | 3 & 4 | 2 & 3 | 1 & | 1 & 2 | 2 & 3 |
| | 3 & 4 | | | 2, 3 | | |
| | | | | & 4 | | |
|------------+--------+-------+-------+------+-------+-------|
| 80486DX2 | 1 & 2, | 3 & 4 | Open | 2 & | 1 & 2 | 2 & 3 |
| | 3 & 4 | | | 3, 4 | | |
| | | | | & 5 | | |
|------------+--------+-------+-------+------+-------+-------|
| SL80486DX2 | 1 & 2, | 3 & 4 | Open | 2 & | 1 & 2 | 2 & 3 |
| | 3 & 4 | | | 3, 4 | | |
| | | | | & 5 | | |
|------------+--------+-------+-------+------+-------+-------|
| AM486DX4 | 1 & 2, | 3 & 4 | Open | 2 & | 1 & 2 | 2 & 3 |
| | 3 & 4 | | | 3, 4 | | |
| | | | | & 5 | | |
|------------+--------+-------+-------+------+-------+-------|
| 80486DX4 | 1 & 2, | 3 & 4 | Open | 2 & | 1 & 2 | 2 & 3 |
| | 3 & 4 | | | 3, 4 | | |
| | | | | & 5 | | |
|------------+--------+-------+-------+------+-------+-------|
| P24D | 1 & 2, | 3 & 4 | Open | 2 & | 1 & 2 | 2 & 3 |
| | 3 & 4 | | | 3, 4 | | |
| | | | | & 5 | | |
|------------+--------+-------+-------+------+-------+-------|
| P24T | 1 & 2, | 3 & 4 | 1 & 2 | 2 & | 1 & 2 | 2 & 3 |
| | 3 & 4 | | | 3, 4 | | |
| | | | | & 5 | | |
|------------+--------+-------+-------+------+-------+-------|
| CX M1SC | 1 & 2, | 3 & | Open | 2 & | 1 & 2 | 2 & 3 |
| | 3 & 4 | 4, 5 | | 3, 4 | | |
| | | & 6 | | & 5 | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | JP7 | JP8 | JP9 | JP10 | JP11 | JP12 |
|------------+-------+-------+-------+-------+-------+-------|
| 80486DX | 1 & 2 | Open | Open | Open | Open | 3 & 4 |
|------------+-------+-------+-------+-------+-------+-------|
| CX486DX2 | 2 & 3 | Open | 2 & 3 | 1 & 2 | Open | 3 & 4 |
|------------+-------+-------+-------+-------+-------+-------|
| 80486DX2 | 2 & 3 | 1 & 2 | Open | Open | 1 & 2 | 3 & 4 |
|------------+-------+-------+-------+-------+-------+-------|
| SL80486DX2 | 1 & 2 | Open | Open | Open | Open | 3 & 4 |
|------------+-------+-------+-------+-------+-------+-------|
| AM486DX4 | 1 & 2 | Open | Open | Open | Open | 3 & 4 |
|------------+-------+-------+-------+-------+-------+-------|
| 80486DX4 | 1 & 2 | Open | Open | Open | Open | 3 & 4 |
|------------+-------+-------+-------+-------+-------+-------|
| P24D | 1 & 2 | 1 & 2 | Open | Open | 1 & 2 | 3 & 4 |
|------------+-------+-------+-------+-------+-------+-------|
| P24T | 1 & 2 | Open | 1 & 2 | 2 & 3 | Open | 2 & 3 |
|------------+-------+-------+-------+-------+-------+-------|
| CX M1SC | 1 & 2 | 1 & 2 | Open | Open | 1 & 2 | 3 & 4 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON’T) |
|------------------------------------------------------------|
| Type | JP13 | JP14 | JP22 | JP23 | JP32 | JP33 |
|------------+-------+--------+-------+-------+------+-------|
| 80486DX | Open | Open | 1 & 2 | 1 & 2 | Open | Open |
|------------+-------+--------+-------+-------+------+-------|
| CX486DX2 | Open | Open | 1 & 2 | 2 & 3 | Open | Open |
|------------+-------+--------+-------+-------+------+-------|
| 80486DX2 | Open | 1 & 2 | 1 & 2 | 1 & 2 | Open | Open |
|------------+-------+--------+-------+-------+------+-------|
| SL80486DX2 | Open | Open | 1 & 2 | 1 & 2 | Open | Open |
|------------+-------+--------+-------+-------+------+-------|
| AM486DX4 | Open | Open | 1 & 2 | 1 & 2 | Open | Open |
|------------+-------+--------+-------+-------+------+-------|
| 80486DX4 | Open | Open | 1 & 2 | 1 & 2 | Open | Open |
|------------+-------+--------+-------+-------+------+-------|
| P24D | Open | 1 & 2 | 1 & 2 | 1 & 2 | Open | Open |
|------------+-------+--------+-------+-------+------+-------|
| P24T | Open | Open | 1 & 2 | 1 & 2 | Open | Open |
|------------+-------+--------+-------+-------+------+-------|
| CX M1SC | Open | 1 & 2 | 1 & 2 | 2 & 3 | Open | 1 & 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP15 | JP16 | JP17 | JP18 | JP36 |
|----------+----------+----------+----------+--------+-------|
| 3.3v | Open | Open | Closed | Closed | 2 & 3 |
|----------+----------+----------+----------+--------+-------|
| 3.45v | Open | Open | Closed | Closed | 1 & 2 |
|----------+----------+----------+----------+--------+-------|
| 5v | Closed | Closed | Open | Open | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | JP30 | JP31 |
|------------------+--------------------+--------------------|
| | 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|----+-------------+--------------------+--------------------|
| » | 3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+