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# ELITEGROUP COMPUTER SYSTEMS, INC.
SI54P VIO
Processor Pentium
Processor 75/90/100MHz
Speed
Chip Set SIS
Max. Onboard 128MB
DRAM
Cache 256/512/1024KB
BIOS Phoenix
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, green PC connector, IDE
interfaces (2), parallel port, PS/2 mouse port,
serial ports (2), VGA feature connector, VGA
port, riser slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+-------------------+-----------|
| Parallel port | J1 | 3.3v connector | J14 |
|-----------------+----------+-------------------+-----------|
| Serial port 2 | J2 | IDE interface LED | JP15 |
|-----------------+----------+-------------------+-----------|
| Serial port 1 | J3 | Turbo LED | JP21 pins |
| | | | 2 - 3 |
|-----------------+----------+-------------------+-----------|
| VGA port | J5 | Green PC | JP21 pins |
| | | connector | 4 - 5 |
|-----------------+----------+-------------------+-----------|
| PS/2 mouse port | J6 | Turbo switch | JP21 pins |
| | | | 6 - 7 |
|-----------------+----------+-------------------+-----------|
| VGA feature | J8 | Reset switch | JP21 pins |
| connector | | | 9 - 10 |
|-----------------+----------+-------------------+-----------|
| Floppy drive | J11 | Power LED & | JP21 pins |
| interface | | keylock | 11 - 15 |
|-----------------+----------+-------------------+-----------|
| IDE interface | J12 | Speaker | JP21 pins |
| (secondary) | | | 17 - 20 |
|-----------------+----------+-------------------+-----------|
| IDE interface | J13 | Riser Card | SL1 |
| (primary) | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|------------------------------------+--------+--------------|
| » | Video memory type select fast | JP1 | pins 1 & 2 |
| | page mode | | closed |
|---+--------------------------------+--------+--------------|
| | Video memory type select | JP1 | pins 2 & 3 |
| | extended data out mode | | closed |
|---+--------------------------------+--------+--------------|
| » | SMC 37C665 signal enabled | JP4 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | SMC 37C665 signal disabled | JP4 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | BIOS type select EPROM | JP5 | Open |
|---+--------------------------------+--------+--------------|
| | BIOS type select 5v flash | JP5 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | BIOS type select 12v flash | JP5 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | CMOS memory normal operation | JP6 | Open |
|---+--------------------------------+--------+--------------|
| | CMOS memory clear | JP6 | Closed |
|---+--------------------------------+--------+--------------|
| » | Parity check enabled | JP12 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Parity check disabled | JP12 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | IDE interface enabled | JP13 | Open |
|---+--------------------------------+--------+--------------|
| | IDE interface disabled | JP13 | Closed |
|---+--------------------------------+--------+--------------|
| » | DRAM type select single side | JP14 | pins 2 & 3 |
| | in both banks | | closed |
|---+--------------------------------+--------+--------------|
| | DRAM type select double side | JP14 | pins 1 & 2, |
| | in bank 2 & single side in | | 3 & 4 closed |
| | bank 1 | | |
|---+--------------------------------+--------+--------------|
| » | Cache type select write back | JP17 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | Cache type select write | JP17 | pins 2 & 3 |
| | through | | closed |
|---+--------------------------------+--------+--------------|
| » | CPU write to always | JP18 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CPU write to invalidate | JP18 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | CPU next address disabled | JP19 | pins 1 & 2 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| | CPU next address enabled | JP19 | pins 2 & 3 |
| | | | closed |
|---+--------------------------------+--------+--------------|
| » | Factory configured - do not | JP20 | 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) 512K x 36 | (2) 4M 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 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | NONE |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (2) 32K x 8 |
|------------+---------------+---------------+---------------|
| 512KB | (4) 64K x 8 | (4) 64K x 8 | (2) 32K x 8 |
|------------+---------------+---------------+---------------|
| 1MB | (4) 128K x 8 | (4) 128K x 8 | (2) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 |
|-------------------+--------------------+-------------------|
| 256KB | Open | Open |
|-------------------+--------------------+-------------------|
| 512KB | Closed | Open |
|-------------------+--------------------+-------------------|
| 1MB | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP16 |
|--------------------------+---------------------------------|
| 75MHz | pins 1 & 2 closed |
|--------------------------+---------------------------------|
| 90MHz | pins 1 & 2, 5 & 6 closed |
|--------------------------+---------------------------------|
| 100MHz | pins 1 & 2, 3 & 4, 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DACK/DRQ CONFIGURATION |
|------------------------------------------------------------|
| DACK/DRQ | JP8 | JP9 |
|------------------+--------------------+--------------------|
| DACK1/DRQ1 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| DACK3/DRQ3 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+