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# COMPUTREND SYSTEMS, INC.
PCI PENTIUM AL3
Processor Pentium
Processor 75/90/100MHz
Speed
Chip Set ALI
Max. Onboard 192MB
DRAM
Cache 256/512/1024KB
BIOS AMI
Dimensions 330mm x 220mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
green PC connector, IDE interfaces (2), parallel
port, serial ports (2)
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+-----------+-----------------+------------|
| Serial port 1 | CN1 | Turbo LED | JFP pins |
| | | | 12 & 13 |
|-----------------+-----------+-----------------+------------|
| Serial port 2 | CN2 | Turbo switch | JFP pins |
| | | | 15 - 17 |
|-----------------+-----------+-----------------+------------|
| Floppy drive | CN3 | Reset switch | JFP pins |
| interface | | | 19 & 20 |
|-----------------+-----------+-----------------+------------|
| Parallel port | CN4 | IDE interface | JFPA |
| | | LED | |
|-----------------+-----------+-----------------+------------|
| IDE interface 2 | CN5 | Green PC | JG1 |
| | | connector | |
| | | (monitor) | |
|-----------------+-----------+-----------------+------------|
| IDE interface 1 | CN6 | Green PC LED | JG2 |
|-----------------+-----------+-----------------+------------|
| External | JB1 | Green PC | JG3 |
| battery | | connector | |
|-----------------+-----------+-----------------+------------|
| Power LED & | JFP pins | Chassis fan | JP10 |
| keylock | 1 - 5 | power | |
|-----------------+-----------+-----------------+------------|
| Speaker | JFP pins | 32-bit PCI | PC1 - PC3 |
| | 7 - 10 | slots | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Battery type select internal | JB1 | Pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery type select external | JB1 | Closed |
|---+----------------------------------+--------+------------|
| » | Flash BIOS voltage select 12v | JP2 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Flash BIOS voltage select 5v | JP2 | Pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Power good signal detect from | JP5 | Pins 2 & 3 |
| | board | | closed |
|---+----------------------------------+--------+------------|
| | Power good signal detect from | JP5 | Pins 1 & 2 |
| | power supply | | closed |
|---+----------------------------------+--------+------------|
| | IDE interface enabled | JP7 | Open |
|---+----------------------------------+--------+------------|
| | IDE interface disabled | JP7 | Closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP8 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 2MB | (2) 256K x 36 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 4MB | (2) 512K x 36 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 6MB | (2) 256K x 36 | (2) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 10MB | (2) 1M x 36 | (2) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 12MB | (2) 512K x 36 | (2) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 14MB | (2) 256K x 36 | (2) 512K x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 16MB | (2) 2M x 36 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 18MB | (2) 2M x 36 | (2) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 18MB | (2) 1M x 36 | (2) 1M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 20MB | (2) 1M x 36 | (2) 1M x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 20MB | (2) 2M x 36 | (2) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 22MB | (2) 2M x 36 | (2) 512K x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 24MB | (2) 1M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 26MB | (2) 2M x 36 | (2) 1M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 28MB | (2) 2M x 36 | (2) 1M x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 32MB | (2) 4M x 36 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 34MB | (2) 4M x 36 | (2) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 38MB | (2) 4M x 36 | (2) 256K x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 40MB | (2) 4M x 36 | (2) 512K x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 42MB | (2) 4M x 36 | (2) 1M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 44MB | (2) 4M x 36 | (2) 1M x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 48MB | (2) 4M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 50MB | (2) 4M x 36 | (2) 2M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 52MB | (2) 4M x 36 | (2) 2M x 36 | (2) 512K x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 56MB | (2) 4M x 36 | (2) 2M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 64MB | (2) 8M x 36 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 66MB | (2) 8M x 36 | (2) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 66MB | (2) 4M x 36 | (2) 4M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 68MB | (2) 8M x 36 | (2) 512K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 68MB | (2) 4M x 36 | (2) 4M x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 70MB | (2) 8M x 36 | (2) 256K x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 72MB | (2) 8M x 36 | (2) 512K x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 74MB | (2) 8M x 36 | (2) 1M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 76MB | (2) 8M x 36 | (2) 512K x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 80MB | (2) 8M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 82MB | (2) 8M x 36 | (2) 2M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 84MB | (2) 8M x 36 | (2) 2M x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 88MB | (2) 8M x 36 | (2) 2M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 96MB | (2) 4M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 96MB | (2) 8M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 98MB | (2) 8M x 36 | (2) 4M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 100MB | (2) 8M x 36 | (2) 4M x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 104MB | (2) 8M x 36 | (2) 4M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 112MB | (2) 8M x 36 | (2) 4M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 128MB | (2) 8M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 128MB | (2) 16M x 36 | NONE | NONE |
|------------+---------------+---------------+---------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 130MB | (2) 8M x 36 | (2) 8M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 130MB | (2) 16M x 36 | (2) 256K x 36 | NONE |
|------------+---------------+---------------+---------------|
| 132MB | (2) 8M x 36 | (2) 8M x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 136MB | (2) 8M x 36 | (2) 8M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 138MB | (2) 16M x 36 | (2) 1M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 140MB | (2) 16M x 36 | (2) 1M x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 144MB | (2) 16M x 36 | (2) 1M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 146MB | (2) 16M x 36 | (2) 2M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 148MB | (2) 16M x 36 | (2) 2M x 36 | (2) 512K x 36 |
|------------+---------------+---------------+---------------|
| 152MB | (2) 16M x 36 | (2) 2M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 160MB | (2) 16M x 36 | (2) 2M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 162MB | (2) 16M x 36 | (2) 4M x 36 | (2) 256K x 36 |
|------------+---------------+---------------+---------------|
| 164MB | (2) 16M x 36 | (2) 4M x 36 | (2) 512K x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 168MB | (2) 16M x 36 | (2) 4M x 36 | (2) 1M x 36 |
|------------+---------------+---------------+---------------|
| 176MB | (2) 16M x 36 | (2) 4M x 36 | (2) 2M x 36 |
|------------+---------------+---------------+---------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 | NONE |
|------------+---------------+---------------+---------------|
| 192MB | (2) 16M x 36 | (2) 4M x 36 | (2) 4M x 36 |
|------------+---------------+---------------+---------------|
| 192MB | (2) 8M x 36 | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 256KB | (8) 32K x 8 | (1) 8K x 8 |
|------------------+--------------------+--------------------|
| 512KB | (8) 64K x 8 | (1) 16K x 8 |
|------------------+--------------------+--------------------|
| 1MB | (8) 128K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JS2 | JS3 |
|------------------+--------------------+--------------------|
| 256KB | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 512KB | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 1MB | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JK1 |
|----------------------------+-------------------------------|
| 75MHz | Open |
|----------------------------+-------------------------------|
| 90MHz | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 100MHz | Pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CONFIGURATION |
|------------------------------------------------------------|
| DMA | CP2 | CP3 | CP4 | CP5 |
|-----------+------------+-----------+-----------+-----------|
| DMA 1 | Open | Closed | Open | Closed |
|-----------+------------+-----------+-----------+-----------|
| DMA 3 | Closed | Open | Closed | Open |
+------------------------------------------------------------+