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# AMPTRON INTERNATIONAL, INC.
PM-7500C
Processor Pentium
Processor Speed 75/90/100/120/133MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 254mm x 218mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
IDE interfaces (2), parallel port, serial
ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN1 | Chassis fan | J23 |
| | | power | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | Speaker | JP25 |
|-------------------+----------+------------------+----------|
| Floppy drive | CN3 | Power LED & | JP26 |
| interface | | keylock | |
|-------------------+----------+------------------+----------|
| Parallel port | CN4 | Reset switch | JP27 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN5 | IDE interface | JP28 |
| | | LED | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | 32-bit PCI slots | PC1 – |
| | | | PC3 |
|-------------------+----------+------------------+----------|
| External battery | J4 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | CMOS memory normal operation | J4 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | J4 | Pins 3 & 4 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Battery type select external | J4 | Closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 12v | JP4 | Closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 5v | JP4 | Open |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP9 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP10 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|---------------+----------------------+---------------------|
| 8MB | (2) 1M x 36 | None |
|---------------+----------------------+---------------------|
| 16MB | (2) 2M x 36 | None |
|---------------+----------------------+---------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|---------------+----------------------+---------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|---------------+----------------------+---------------------|
| 32MB | (2) 4M x 36 | None |
|---------------+----------------------+---------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|---------------+----------------------+---------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|---------------+----------------------+---------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|---------------+----------------------+---------------------|
| 64MB | (2) 8M x 36 | None |
|---------------+----------------------+---------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|---------------+----------------------+---------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|---------------+----------------------+---------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|---------------+----------------------+---------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|---------------+----------------------+---------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. The location of the banks |
| is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 256KB | (8) 32K x 8 | (1) 8K/16K/32K x 8 |
|------------------+--------------------+--------------------|
| 512KB | (8) 64K x 8 | (1) 16K/32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J9 |
|----------------------------+-------------------------------|
| 256KB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 512KB | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | J10 |
|----------------------------+-------------------------------|
| 3.3v | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 5v | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU | Clock |Multiplier|JP3 | JP5A | JP5B |JP11A |JP11B |
| speed | speed | | | | | | |
|--------+-------+----------+----+------+------+------+------|
| 75MHz | 50MHz | 1.5x |1 & |Closed|Closed| Open | Open |
| | | | 2 | | | | |
|--------+-------+----------+----+------+------+------+------|
| 90MHz | 60MHz | 1.5x |2 & | Open |Closed| Open | Open |
| | | | 3 | | | | |
|--------+-------+----------+----+------+------+------+------|
| 100MHz | 66MHz | 1.5x |2 & |Closed| Open | Open | Open |
| | | | 3 | | | | |
|--------+-------+----------+----+------+------+------+------|
| 120MHz | 60MHz | 2x |2 & | Open |Closed|Closed| Open |
| | | | 3 | | | | |
|--------+-------+----------+----+------+------+------+------|
| 133MHz | 66MHz | 2x |2 & |Closed| Open |Closed| Open |
| | | | 3 | | | | |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. The |
|orientation of A & B on JP11 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP6 |
|----------------------------+-------------------------------|
| 3.3v | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 3.5v | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | JP1 | JP2 |
|------------------+--------------------+--------------------|
| 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 2 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+