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# EFA CORPORATION
P55SVPIO
Processor CX M1/Pentium
Processor Speed 75/90/100/120/133/150/166MHz
Chip Set SIS
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 330mm x 220mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
IDE interfaces (2), parallel port, serial
ports (2), VGA feature connector, VGA port,
cache slot, VRM connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| VGA port | J5 | Reset switch | J16 |
|-------------------+----------+------------------+----------|
| VGA feature | J7 | Turbo LED | J17 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Serial port 2 | J8 | Turbo switch | J18 |
|-------------------+----------+------------------+----------|
| Serial port 1 | J9 | Speaker | J19 |
|-------------------+----------+------------------+----------|
| Parallel port | J10 | Power LED & | J20 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| Floppy drive | J11 | External battery | J21 |
| interface | | | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | J12 | 32-bit PCI slots | PC1 - |
| | | | PC3 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | J13 | Cache slot | SL1 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J14 | VRM connector | VRM |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| | Chipset select SMC665 | JP2 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Chipset select SMC669 | JP2 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Monitor type select EGA/VGA | JP7 | Open |
|---+---------------------------------+-------+--------------|
| | Monitor type select monochrome | JP7 | Closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP8 | Pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP9 | Pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP15 | Pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+-------+--------------|
| | BIOS type select flash BIOS | JP17 | Pins 1 & 2, |
| | | | 5 & 6 closed |
|---+---------------------------------+-------+--------------|
| | BIOS type select EPROM | JP17 | Pins 2 & 3, |
| | | | 4 & 5 closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP20 | Pins 2 & 3 |
| | alter | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP21 | Pins 1 & 2 |
| | alter | | closed |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP23 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP23 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 1M x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 2M x 36 | (2) 512K 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 |
|------------------+--------------------+--------------------|
| 36MB | (2) 4M x 36 | (2) 512K 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|---------------+--------------------+-----------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|---------------+--------------------+-----------------------|
| 68MB | (2) 8M x 36 | (2) 512K 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. Board also accepts x |
| 32 SIMMs. If using x 32 SIMMs, one module may be |
| installed in the first socket on Bank 0 labeled SIMM |
| 1. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Type | JP6 |
|-------------------------------+----------------------------|
| EDO | Closed |
|-------------------------------+----------------------------|
| Fast page | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG | SL1 |
|-----------+-------------+-------------+--------------------|
| 256KB (A) | (8) 32K x 8 | (1) 32K x 8 | Not installed |
|-----------+-------------+-------------+--------------------|
| 256KB (B) | None | None | 256KB module |
| | | | installed |
|-----------+-------------+-------------+--------------------|
| 512KB (A) | (8) 64K x 8 | (1) 32K x 8 | Not installed |
|-----------+-------------+-------------+--------------------|
| 512KB (B) | None | None | 512KB module |
| | | | installed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP12 |
|-----------+----------------+---------------+---------------|
| 256KB (A) | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 256KB (B) | Pins 2 & 3 | Open | Open |
| | closed | | |
|-----------+----------------+---------------+---------------|
| 512KB (A) | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|-----------+----------------+---------------+---------------|
| 512KB (B) | Pins 2 & 3 | Open | Open |
| | closed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP24 |
|----------------------------+-------------------------------|
| Mixed | Pins 3 & 5, 4 & 6 closed |
|----------------------------+-------------------------------|
| 3.3v | Pins 1 & 3, 2 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP13 | JP14 | JP18 | JP19 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| N/A | 40MHz | N/A | 1 & 2 | 1 & 2 | N/A | N/A |
|--------+--------+------------+-------+-------+------+------|
| 75MHz | 50MHz | 1.5x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 90MHz | 60MHz | 1.5x | 1 & 2 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 100MHz | 66MHz | 1.5x | 2 & 3 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 120MHz | 60MHz | 2x | 1 & 2 | 2 & 3 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 133MHz | 66MHz | 2x | 2 & 3 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2.5x | 1 & 2 | 2 & 3 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2.5x | 2 & 3 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------+--------+------------+-------+-------+------+------|
| N/A | N/A | 3x | N/A | N/A | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| N/A | N/A | 3x | N/A | N/A | 2 & | 1 & |
| | | | | | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP16 | JP22 |
|----------------+---------+---------------------------------|
| 3.3v | Open | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|----------------+---------+---------------------------------|
| VRM installed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ON BOARD VGA SELECTION |
|------------------------------------------------------------|
| Setting | JP3 | JP4 | JP5 |
|--------------+------------+------------+-------------------|
| Enabled | Closed | Closed | Pins 1 & 2 closed |
|--------------+------------+------------+-------------------|
| Disabled | Open | Open | Pins 2 & 3 closed |
+------------------------------------------------------------+