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# ELITEGROUP COMPUTER SYSTEMS, INC.
SI54P AIO
Processor Pentium
Processor 75/90/100MHz
Speed
Chip Set SIS
Max. Onboard 128MB
DRAM
Cache 256/512/1024KB
BIOS Award
Dimensions 330mm x 218mm
I/O Options 32-bit PCI slots (4), 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 |
|------------------+----------+------------------+-----------|
| 3.3v connector | J1 | Turbo LED | J13 pins |
| | | | 2 - 3 |
|------------------+----------+------------------+-----------|
| Floppy drive | J5 | Green PC | J13 pins |
| interface | | connector | 4 - 5 |
|------------------+----------+------------------+-----------|
| Serial port 1 | J6 | Turbo switch | J13 pins |
| | | | 6 - 7 |
|------------------+----------+------------------+-----------|
| Serial port 2 | J7 | Reset switch | J13 pins |
| | | | 9 - 10 |
|------------------+----------+------------------+-----------|
| Parallel port | J8 | Power LED & | J13 pins |
| | | keylock | 11 - 15 |
|------------------+----------+------------------+-----------|
| IDE interface 1 | J9 | Speaker | J13 pins |
| | | | 17 - 20 |
|------------------+----------+------------------+-----------|
| IDE interface 2 | J10 | 32-bit PCI slots | PC1 - PC4 |
|------------------+----------+------------------+-----------|
| IDE interface | J12 | | |
| LED | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | On board I/O enabled | JP3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | On board I/O disabled | JP3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | PCI IDE interface enabled | JP4 | Open |
|---+----------------------------------+--------+------------|
| | PCI IDE interface disabled | JP4 | Closed |
|---+----------------------------------+--------+------------|
| » | DRAM parity check enabled | JP9 | Closed |
|---+----------------------------------+--------+------------|
| | DRAM parity check disabled | JP9 | Open |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP15 | N/A |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 36 | NONE |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | NONE |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | NONE |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | NONE |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 512K x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 36MB | (2) 4M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | NONE |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP5 |
|-----------------------------+------------------------------|
| Single sided only | pins 2 & 3 closed |
|-----------------------------+------------------------------|
| Single and double sided | pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG | Dirty |
| | | | | (U28) |
|-------+-------------+------------+------------+------------|
| 256KB | (4) 32K x 8 | (4) 32K x | (1) 32K x | (1) 32K x |
| | | 8 | 8 | 8 |
|-------+-------------+------------+------------+------------|
| 512KB | (4) 64K x 8 | (4) 64K x | (1) 32K x | (1) 32K x |
| | | 8 | 8 | 8 |
|-------+-------------+------------+------------+------------|
| 1MB | (4) 128K x | (4) 128K x | (1) 32K x | (1) 32K x |
| | 8 | 8 | 8 | 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 |
|-------------------+--------------------+-------------------|
| 256KB | Open | Open |
|-------------------+--------------------+-------------------|
| 512KB | Open | Closed |
|-------------------+--------------------+-------------------|
| 1MB | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP7 |
|--------------------------+---------------------------------|
| 75MHz | pins 2 & 3, 5 & 6, 7 & 8 closed |
|--------------------------+---------------------------------|
| 90MHz | pins 2 & 3, 4 & 5, 8 & 9 closed |
|--------------------------+---------------------------------|
| 100MHz | pins 1 & 2, 5 & 6, 7 & 8 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SIGNAL CONFIGURATION |
|------------------------------------------------------------|
| Type | JP12 | JP14 |
|--------------------+-------------------+-------------------|
| Write back cache | pins 1 & 2 closed | n/a |
|--------------------+-------------------+-------------------|
| Write through | pins 2 & 3 closed | n/a |
| cache | | |
|--------------------+-------------------+-------------------|
| Always invalidated | n/a | pins 1 & 2 closed |
|--------------------+-------------------+-------------------|
| Write to | n/a | pins 2 & 3 closed |
| invalidated | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ECP MODE CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP1 | JP2 |
|------------------+--------------------+--------------------|
| DRQ1 - DACK1 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| DRQ3 - DACK3 | pins 2 & 3 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP8 |
|----------------------------+-------------------------------|
| Flash ROM +5v | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| Flash ROM +12v | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| EPROM | Open |
+------------------------------------------------------------+