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# M TECHNOLOGY, INC.
R528 PENTIUM PCI/ISA
Processor CX M1/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 512MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 330mm x 218mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
green PC connector, IDE interfaces (2), SCSI
connector, parallel port, PS/2 mouse
interface, serial ports (2), cache slot, USB
connectors (2), sound adapter connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN1 | Reset switch | J3 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN2 | PS/2 mouse | J4 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN3 | Green PC | J5 |
| interface | | connector | |
|-------------------+----------+------------------+----------|
| Parallel port | CN4 | IDE interface | J6 |
| | | LED | |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN5 | SCSI interface | JP1 |
| | | LED | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN6 | 32-bit PCI slots | PC1 - |
| | | | PC3 |
|-------------------+----------+------------------+----------|
| SCSI interface | CN7 | Cache slot | SL1 |
|-------------------+----------+------------------+----------|
| Sound adapter | CN8 | USB connector 1 | USB1 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Power LED & | J1 | USB connector 2 | USB2 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | J2 | | |
|------------------------------------------------------------|
| Note: CN7 & CN8 are optional and may not be present on all |
| boards. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-------+-----------------|
| » | PS/2 mouse enabled | JP29 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | PS/2 mouse disabled | JP29 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| » | CMOS memory normal operation | JP38 | Pins 1 & 2 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP38 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 4MB | (2) 512K x 36 | None |
|------------------+--------------------+--------------------|
| 4MB | (2) 256K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (2) 512K x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 6MB | (2) 256K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (2) 512K x 36 | (2) 512K x 36 |
|------------------+--------------------+--------------------|
| 10MB | (2) 1M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 12MB | (2) 512K x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 18MB | (2) 2M x 36 | (2) 256K x 36 |
|------------------+--------------------+--------------------|
| 20MB | (2) 512K x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|----------------+---------------------+---------------------|
| 34MB | (2) 256K x 36 | (2) 4M x 36 |
|----------------+---------------------+---------------------|
| 36MB | (2) 4M x 36 | (2) 512K x 36 |
|----------------+---------------------+---------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|----------------+---------------------+---------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|----------------+---------------------+---------------------|
| 64MB | (2) 8M x 36 | None |
|----------------+---------------------+---------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|----------------+---------------------+---------------------|
| 66MB | (2) 256K x 36 | (2) 8M x 36 |
|----------------+---------------------+---------------------|
| 68MB | (2) 8M x 36 | (2) 512K x 36 |
|----------------+---------------------+---------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|----------------+---------------------+---------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|----------------+---------------------+---------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|----------------+---------------------+---------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|----------------+---------------------+---------------------|
| 136MB | (2) 16M x 36 | (2) 1M x 36 |
|----------------+---------------------+---------------------|
| 144MB | (2) 16M x 36 | (2) 2M x 36 |
|----------------+---------------------+---------------------|
| 160MB | (2) 16M x 36 | (2) 4M x 36 |
|----------------+---------------------+---------------------|
| 192MB | (2) 16M x 36 | (2) 8M x 36 |
|----------------+---------------------+---------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|----------------+---------------------+---------------------|
| 264MB | (2) 32M x 36 | (2) 1M x 36 |
|----------------+---------------------+---------------------|
| 272MB | (2) 32M x 36 | (2) 2M x 36 |
|----------------+---------------------+---------------------|
| 288MB | (2) 32M x 36 | (2) 4M x 36 |
|----------------+---------------------+---------------------|
| 320MB | (2) 32M x 36 | (2) 8M x 36 |
|----------------+---------------------+---------------------|
| 384MB | (2) 32M x 36 | (2) 16M x 36 |
|----------------+---------------------+---------------------|
| 512MB | (2) 32M x 36 | (2) 32M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Banks 0 & 1 are |
| interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG | SL1 |
|-------+--------------+-------------+-----------------------|
| 256KB | (2) 32K x 32 | (1) 32K x 8 | Not installed |
|-------+--------------+-------------+-----------------------|
| 512KB | (2) 32K x 32 | (1) 32K x 8 | 256KB module |
| | | | installed |
+------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| JP16 | JP17 | JP18 |JP42| JP43 | JP44 |
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+----+------+------|
|120MHz|50MHz| 2x | Open |Closed| Open |Open|Closed| Open |
|------+-----+----------+------+------+------+----+------+------|
|133MHz|55MHz| 2x |Closed|Closed|Closed|Open|Closed| Open |
|------+-----+----------+------+------+------+----+------+------|
|150MHz|60MHz| 2x |Closed| Open | Open |Open|Closed|Closed|
|------+-----+----------+------+------+------+----+------+------|
|166MHz|66MHz| 2x | Open | Open | Open |Open|Closed| Open |
+---------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| JP16 | JP17 |JP18| JP42 | JP43 | JP44 |
|speed |speed| | | | | | | |
|------+-----+----------+------+------+----+------+------+------|
|75MHz |50MHz| 1.5x | Open |Closed|Open| Open | Open | Open |
|------+-----+----------+------+------+----+------+------+------|
|90MHz |60MHz| 1.5x |Closed| Open |Open| Open | Open |Closed|
|------+-----+----------+------+------+----+------+------+------|
|100MHz|66MHz| 1.5x | Open | Open |Open| Open | Open | Open |
|------+-----+----------+------+------+----+------+------+------|
|120MHz|60MHz| 2x |Closed| Open |Open| Open |Closed|Closed|
|------+-----+----------+------+------+----+------+------+------|
|133MHz|66MHz| 2x | Open | Open |Open| Open |Closed| Open |
|------+-----+----------+------+------+----+------+------+------|
|150MHz|60MHz| 2.5x |Closed| Open |Open|Closed|Closed|Closed|
|------+-----+----------+------+------+----+------+------+------|
|166MHz|66MHz| 2.5x | Open | Open |Open|Closed|Closed| Open |
|------+-----+----------+------+------+----+------+------+------|
|180MHz|60MHz| 3x |Closed| Open |Open|Closed| Open |Closed|
|------+-----+----------+------+------+----+------+------+------|
|200MHz|66MHz| 3x | Open | Open |Open|Closed| Open | Open |
+---------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| CPU type | Voltage | Voltage | JP40 | JP45 | JP46 |
| | 1 | 2 | | | |
|----------+---------+---------+-----------+--------+--------|
| P54C/CX | 3.3v | N/A | 1 & 2, 3 | Closed | Open |
| M1 | | | & 4, 5 & | | |
| | | | 6 | | |
|----------+---------+---------+-----------+--------+--------|
| P54C/CX | 3.45v | N/A | 1 & 2, 3 | Open | Closed |
| M1 | | | & 4, 5 & | | |
| | | | 6 | | |
|----------+---------+---------+-----------+--------+--------|
| P54C/CX | 3.5v | N/A | 1 & 2, 3 | Open | Open |
| M1 | | | & 4, 5 & | | |
| | | | 6 | | |
|----------+---------+---------+-----------+--------+--------|
| P55C | 3.3v | 2.5v | Open | Closed | Open |
|----------+---------+---------+-----------+--------+--------|
| P55C | 3.45v | 2.7v | Open | Open | Closed |
|----------+---------+---------+-----------+--------+--------|
| P55C | 3.5v | 2.8v | Open | Open | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (CON’T) |
|------------------------------------------------------------|
| CPU type |Voltage 1|Voltage 2| JP47 | JP48 | JP49 | JP50 |
|----------+---------+---------+-------+-------+------+------|
|P54C/CX M1| 3.3v | N/A | Open | N/A | N/A | N/A |
|----------+---------+---------+-------+-------+------+------|
|P54C/CX M1| 3.45v | N/A | Open | N/A | N/A | N/A |
|----------+---------+---------+-------+-------+------+------|
|P54C/CX M1| 3.5v | N/A |Closed | N/A | N/A | N/A |
|----------+---------+---------+-------+-------+------+------|
| P55C | 3.3v | 2.5v | Open |Closed | Open | Open |
|----------+---------+---------+-------+-------+------+------|
| P55C | 3.45v | 2.7v | Open | Open |Closed| Open |
|----------+---------+---------+-------+-------+------+------|
| P55C | 3.5v | 2.8v |Closed | Open | Open |Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLASH BIOS SELECTION |
|------------------------------------------------------------|
| Setting | JP36 | JP37 |
|------------------+--------------------+--------------------|
| Flash mode | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| +5v flash BIOS | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| +12v flash BIOS | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+