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# EURONE (HK) CO., LTD.
EM-5558
Device Type Mainboard
Processor CX 6X86/CX 6X86L/CX M2/IBM 6X86/IBM6X86L/IBM
M2/AM K5/ AM K6/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200/233MHz
Chip Set Intel
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), cache slot
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| IDE interface LED | C1 | IDE interface 2 | CN4 |
|-------------------+----------+------------------+----------|
| Reset switch | C2 | IDE interface 1 | CN5 |
|-------------------+----------+------------------+----------|
| Speaker | C3 | Floppy drive | CN6 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Power LED & | C4 | Chassis fan | FAN |
| keylock | | power | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN1 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | Cache slot | SL1 |
|-------------------+----------+------------------+----------|
| Parallel port | CN3 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | CMOS memory normal operation | J8 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | J8 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP5 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 12v | JP8 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 5v | JP8 | 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 | None | None | 256KB module |
| | | | installed |
|-------+--------------+--------------+----------------------|
| 256KB | (2) 32K x 32 | None | Not installed |
|-------+--------------+--------------+----------------------|
| 512KB | None | None | 512KB module |
| | | | 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 | JP4 |
|----------------------------+-------------------------------|
| 256KB | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 512KB | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 120MHz | 50MHz | 2x | 2 & | 2 & | 2 & | 1 & | 2 & |
| | | | 3 | 3 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | 1 & | 2 & | 2 & | 1 & | 2 & |
| | | | 2 | 3 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & | 2 & |
| | | | 3 | 2 | 3 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 120MHz | 50MHz | 2x | 2 & | 2 & | 2 & | 1 & | 2 & |
| | | | 3 | 3 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | 1 & | 2 & | 2 & | 1 & | 2 & |
| | | | 2 | 3 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & | 2 & |
| | | | 3 | 2 | 3 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | 1 & | 2 & | 2 & | 1 & | 2 & |
| | | | 2 | 3 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & | 2 & |
| | | | 3 | 2 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 75MHz | 2x | 1 & | 2 & | 1 & | 1 & | 2 & |
| | | | 2 | 3 | 2 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86L) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | 1 & | 2 & | 2 & | 1 & | 2 & |
| | | | 2 | 3 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & | 2 & |
| | | | 3 | 2 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 75MHz | 2x | 1 & | 2 & | 1 & | 1 & | 2 & |
| | | | 2 | 3 | 2 | 2 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX M2) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 2 & | 1 & | 2 & | 2 & | 2 & |
| | | | 3 | 2 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 2 & | 1 & | 2 & | 2 & | 1 & |
| | | | 3 | 2 | 3 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | 2 & | 1 & | 2 & | 1 & | 1 & |
| | | | 3 | 2 | 3 | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM M2) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 2 & | 1 & | 2 & | 2 & | 2 & |
| | | | 3 | 2 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 2 & | 1 & | 2 & | 2 & | 1 & |
| | | | 3 | 2 | 3 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | 2 & | 1 & | 2 & | 1 & | 1 & |
| | | | 3 | 2 | 3 | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 75MHz | 50MHz | 1.5x | 2 & | 2 & | 2 & | 1 & | 1 & |
| | | | 3 | 3 | 3 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x | 1 & | 2 & | 2 & | 1 & | 1 & |
| | | | 2 | 3 | 3 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x | 2 & | 1 & | 2 & | 1 & | 1 & |
| | | | 3 | 2 | 3 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 2x | 1 & | 2 & | 2 & | 1 & | 2 & |
| | | | 2 | 3 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & | 2 & |
| | | | 3 | 2 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2.5x | 1 & | 2 & | 2 & | 2 & | 2 & |
| | | | 2 | 3 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 2 & | 1 & | 2 & | 2 & | 2 & |
| | | | 3 | 2 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 180MHz | 60MHz | 3x | 1 & | 2 & | 2 & | 2 & | 1 & |
| | | | 2 | 3 | 3 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 2 & | 1 & | 2 & | 2 & | 1 & |
| | | | 3 | 2 | 3 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 2 & | 1 & | 2 & | 2 & | 2 & |
| | | | 3 | 2 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 2 & | 1 & | 2 & | 2 & | 1 & |
| | | | 3 | 2 | 3 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | 2 & | 1 & | 2 & | 1 & | 1 & |
| | | | 3 | 2 | 3 | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 75MHz | 50MHz | 1.5x | 2 & | 2 & | 2 & | 1 & | 1 & |
| | | | 3 | 3 | 3 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x | 1 & | 2 & | 2 & | 1 & | 1 & |
| | | | 2 | 3 | 3 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x | 2 & | 1 & | 2 & | 1 & | 1 & |
| | | | 3 | 2 | 3 | 2 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 2x | 1 & | 2 & | 2 & | 1 & | 2 & |
| | | | 2 | 3 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 2x | 2 & | 1 & | 2 & | 1 & | 2 & |
| | | | 3 | 2 | 3 | 2 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2.5x | 1 & | 2 & | 2 & | 2 & | 2 & |
| | | | 2 | 3 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 2 & | 1 & | 2 & | 2 & | 2 & |
| | | | 3 | 2 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 180MHz | 60MHz | 3x | 1 & | 2 & | 2 & | 2 & | 1 & |
| | | | 2 | 3 | 3 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 2 & | 1 & | 2 & | 2 & | 1 & |
| | | | 3 | 2 | 3 | 3 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP1 | JP2 | JP3 | JP6 | JP7 |
| speed | speed | | | | | | |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | 2 & | 1 & | 2 & | 2 & | 2 & |
| | | | 3 | 2 | 3 | 3 | 3 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | 2 & | 1 & | 2 & | 2 & | 1 & |
| | | | 3 | 2 | 3 | 3 | 2 |
|--------+--------+------------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | 2 & | 1 & | 2 & | 1 & | 1 & |
| | | | 3 | 2 | 3 | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP10A | JP10B |
|------------------+--------------------+--------------------|
| AM K5 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| AM K6 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| CX 6X86 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| CX 6X86L | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| CX M2 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| IBM 6X86 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| IBM 6X86L | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| IBM M2 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| P54C | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| P55C | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP9A | JP9B | JP9C | JP9D | JP9E |
|----------+---------+---------+---------+---------+---------|
| 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 |
+------------------------------------------------------------+