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# PC CHIPS MANUFACTURING, LTD.
M558
Device Type Mainboard
Processor CX 6X86/CX 6X86L/CX 6X86MX/IBM 6X86/IBM
6X86L/IBM 6X86MX/AM K5/AM K6/IDT
C6/Pentium/Pentium MMX
Processor Speed 75/90/100/120/133/150/166/180/200/233MHz
Chip Set Intel VX Pro II
Video Chip Set None
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Unidentified
Dimensions 254mm x 218mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
IDE interfaces (2), parallel port, serial
ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+------------+----------------+-----------|
| Serial port 1 | CN1 | IDE interface | CN7/pins |
| | | LED | 2 & 10 |
|------------------+------------+----------------+-----------|
| Serial port 2 | CN2 | Speaker | CN7/pins |
| | | | 5 - 8 |
|------------------+------------+----------------+-----------|
| Parallel port | CN3 | Power LED & | CN7/pins |
| | | keylock | 12 - 16 |
|------------------+------------+----------------+-----------|
| Floppy drive | CN4 | Chassis fan | FAN |
| interface | | power | |
|------------------+------------+----------------+-----------|
| IDE interface 1 | CN5 | IR connector | IR2 |
|------------------+------------+----------------+-----------|
| IDE interface 2 | CN6 | 32-bit PCI | PC1 – PC4 |
| | | slots | |
|------------------+------------+----------------+-----------|
| Reset switch | CN7/pins 1 | USB connector | USB1 |
| | & 9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | CMOS memory normal operation | J1 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | J1 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP4 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | Internal power good selector | JP7 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | External power good selector | JP7 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | SL1 |
|------------+---------------+---------------+---------------|
| 256KB | (2) 32K x 32 | None | Not installed |
|------------+---------------+---------------+---------------|
| 512KB | (2) 32K x 32 | (2) 32K x 32 | Not installed |
|------------------------------------------------------------|
| Note: The location of banks 0 & 1 are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP9 |
|----------------------------+-------------------------------|
| 256KB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 512KB | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 120MHz | 50MHz | 2x | 2 & | 2 & | 1 & | 1 & | 2 & |
| | | | 3 | 3 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 1 & | 2 & |
| | | | 3 | 2 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | 1 & | 2 & | 1 & | 1 & | 2 & |
| | | | 2 | 3 | 2 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 120MHz | 50MHz | 2x | 2 & | 2 & | 1 & | 1 & | 2 & |
| | | | 3 | 3 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 1 & | 2 & |
| | | | 3 | 2 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | 1 & | 2 & | 1 & | 1 & | 2 & |
| | | | 2 | 3 | 2 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 1 & | 2 & |
| | | | 3 | 2 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | 1 & | 2 & | 1 & | 1 & | 2 & |
| | | | 2 | 3 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 75MHz | 2x | 1 & | 2 & | 2 & | 1 & | 2 & |
| | | | 2 | 3 | 3 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86L) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 1 & | 2 & |
| | | | 3 | 2 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | 1 & | 2 & | 1 & | 1 & | 2 & |
| | | | 2 | 3 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 75MHz | 2x | 1 & | 2 & | 2 & | 1 & | 2 & |
| | | | 2 | 3 | 3 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 60MHz | 2.5x | 2 & | 1 & | 1 & | 2 & | 2 & |
| | | | 3 | 2 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 2.5x | 1 & | 2 & | 1 & | 2 & | 2 & |
| | | | 2 | 3 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 75MHz | 2.5x | 1 & | 2 & | 2 & | 2 & | 2 & |
| | | | 2 | 3 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3x | 1 & | 2 & | 1 & | 2 & | 1 & |
| | | | 2 | 3 | 2 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86MX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 60MHz | 2.5x | 2 & | 1 & | 1 & | 2 & | 2 & |
| | | | 3 | 2 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 2.5x | 1 & | 2 & | 1 & | 2 & | 2 & |
| | | | 2 | 3 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 75MHz | 2.5x | 1 & | 2 & | 2 & | 2 & | 2 & |
| | | | 2 | 3 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3x | 1 & | 2 & | 1 & | 2 & | 1 & |
| | | | 2 | 3 | 2 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 75MHz | 50MHz | 1.5x | 2 & | 2 & | 1 & | 1 & | 1 & |
| | | | 3 | 3 | 2 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x | 2 & | 1 & | 1 & | 1 & | 1 & |
| | | | 3 | 2 | 2 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x | 1 & | 2 & | 1 & | 1 & | 1 & |
| | | | 2 | 3 | 2 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 1 & | 2 & |
| | | | 3 | 2 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 2x | 1 & | 2 & | 1 & | 1 & | 2 & |
| | | | 2 | 3 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2.5x | 2 & | 1 & | 1 & | 2 & | 2 & |
| | | | 3 | 2 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 1 & | 2 & | 1 & | 2 & | 2 & |
| | | | 2 | 3 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 180MHz | 60MHz | 3x | 2 & | 1 & | 1 & | 2 & | 1 & |
| | | | 3 | 2 | 2 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 1 & | 2 & | 1 & | 2 & | 1 & |
| | | | 2 | 3 | 2 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 1 & | 2 & | 1 & | 2 & | 2 & |
| | | | 2 | 3 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 1 & | 2 & | 1 & | 2 & | 1 & |
| | | | 2 | 3 | 2 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | 1 & | 2 & | 1 & | 1 & | 1 & |
| | | | 2 | 3 | 2 | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IDT C6) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 50MHz | 3x | 2 & | 2 & | 1 & | 2 & | 1 & |
| | | | 3 | 3 | 2 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 180MHz | 60MHz | 3x | 2 & | 1 & | 1 & | 2 & | 1 & |
| | | | 3 | 2 | 2 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 75MHz | 50MHz | 1.5x | 2 & | 2 & | 1 & | 1 & | 1 & |
| | | | 3 | 3 | 2 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x | 2 & | 1 & | 1 & | 1 & | 1 & |
| | | | 3 | 2 | 2 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x | 1 & | 2 & | 1 & | 1 & | 1 & |
| | | | 2 | 3 | 2 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 2x | 2 & | 1 & | 1 & | 1 & | 2 & |
| | | | 3 | 2 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 2x | 1 & | 2 & | 1 & | 1 & | 2 & |
| | | | 2 | 3 | 2 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2.5x | 2 & | 1 & | 1 & | 2 & | 2 & |
| | | | 3 | 2 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 1 & | 2 & | 1 & | 2 & | 2 & |
| | | | 2 | 3 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 180MHz | 60MHz | 3x | 2 & | 1 & | 1 & | 2 & | 1 & |
| | | | 3 | 2 | 2 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 1 & | 2 & | 1 & | 2 & | 1 & |
| | | | 2 | 3 | 2 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP5 | JP6 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 1 & | 2 & | 1 & | 2 & | 2 & |
| | | | 2 | 3 | 2 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 1 & | 2 & | 1 & | 2 & | 1 & |
| | | | 2 | 3 | 2 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | 1 & | 2 & | 1 & | 1 & | 1 & |
| | | | 2 | 3 | 2 | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP10 |
|------------------+-----------------------------------------|
| AM K5 | Pins 2 & 3 closed, Pins 5 & 6 closed |
|------------------+-----------------------------------------|
| AM K6 | Pins 1 & 2 closed, Pins 4 & 5 closed |
|------------------+-----------------------------------------|
| CX 6X86 | Pins 2 & 3 closed, Pins 5 & 6 closed |
|------------------+-----------------------------------------|
| CX 6X86L | Pins 1 & 2 closed, Pins 4 & 5 closed |
|------------------+-----------------------------------------|
| CX 6X86MX | Pins 1 & 2 closed, Pins 4 & 5 closed |
|------------------+-----------------------------------------|
| IBM 6X86 | Pins 2 & 3 closed, Pins 5 & 6 closed |
|------------------+-----------------------------------------|
| IBM 6X86L | Pins 1 & 2 closed, Pins 4 & 5 closed |
|------------------+-----------------------------------------|
| IBM 6X86MX | Pins 1 & 2 closed, Pins 4 & 5 closed |
|------------------+-----------------------------------------|
| IDT C6 | Pins 2 & 3 closed, Pins 5 & 6 closed |
|------------------+-----------------------------------------|
| P54C | Pins 2 & 3 closed, Pins 5 & 6 closed |
|------------------+-----------------------------------------|
| P55C | Pins 1 & 2 closed, Pins 4 & 5 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP11A | JP11B | JP11C | JP11D | JP11E |
|----------+---------+---------+---------+---------+---------|
| 2.5v | Open | Open | Open | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 2.8v | Open | Open | Open | Open | Closed |
|----------+---------+---------+---------+---------+---------|
| 2.9v | Open | Open | Open | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 3.2v | Open | Open | Closed | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 3.3v | Open | Closed | Open | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 3.5v | Closed | Open | Open | Open | Open |
+------------------------------------------------------------+