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# M TECHNOLOGY, INC.
R542 MUSTANG-ULTRA (VER. 2)
Device Type Mainboard
Processor CX 6X86/IBM 6X86/CX 6X86L/IBM 6X86L/CX
686MX/AM K5/
AM K6/Pentium/Pentium MMX
Processor Speed 90/100/120/133/150/166/180/200/233/266MHz
Chip Set SIS
Video Chip Set None
Maximum Onboard 192MB (EDO & SDRAM supported)
Memory
Maximum Video None
Memory
Cache 512KB
BIOS Award
Dimensions 280mm x 220mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
IDE interfaces (2), parallel port, PS/2 mouse
interface, serial ports (2), IR connector,
USB connectors (2), ATX power connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| ATX power | ATX | Serial port 1 | CN2 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Power LED & | C1 | IDE interface 1 | CN3 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Speaker | C2 | Floppy drive | CN4 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Turbo switch | C3 | Parallel port | CN5 |
|-------------------+----------+------------------+----------|
| Turbo LED | C4 | IDE interface 2 | CN6 |
|-------------------+----------+------------------+----------|
| Reset switch | C5 | IR connector | IR1 |
|-------------------+----------+------------------+----------|
| PWRBT connector | C6 | PS/ mouse | J1 |
| | | interface | |
|-------------------+----------+------------------+----------|
| IDE interface LED | C7 | 32-bit PCI slots | PC1 – |
| | | | PC3 |
|-------------------+----------+------------------+----------|
| Soft off power | C8 | USB connector 1 | USB1 |
| supply | | | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN1 | USB connector 2 | USB2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | JP10 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | CPU mode select togger | JP14 | Open |
|---+---------------------------------+-------+--------------|
| | CPU mode select linear | JP14 | Closed |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP18 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP18 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | On board video enabled | JP24 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | On board video disabled | JP24 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 8MB | (2) 1M x 36 |
|----------------------------+-------------------------------|
| 16MB | (2) 2M x 36 |
|----------------------------+-------------------------------|
| 32MB | (2) 4M x 36 |
|----------------------------+-------------------------------|
| 64MB | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 1 | Bank 2 | Bank 3 |
|------------+---------------+---------------+---------------|
| 8MB | (1) 1M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 2M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 4M x 64 | None | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|----------+----------------+----------------+---------------|
| 32MB | (1) 2M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 | None |
|----------+----------------+----------------+---------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 | None |
|----------+----------------+----------------+---------------|
| 40MB | (1) 2M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 48MB | (1) 4M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 | None |
|----------+----------------+----------------+---------------|
| 48MB | (1) 2M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|----------+----------------+----------------+---------------|
| 56MB | (1) 4M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 64MB | (1) 8M x 64 | None | None |
|----------+----------------+----------------+---------------|
| 64MB | (1) 4M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|----------+----------------+----------------+---------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 | None |
|----------+----------------+----------------+---------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 | None |
|----------+----------------+----------------+---------------|
| 72MB | (1) 4M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 80MB | (1) 8M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 | None |
|----------+----------------+----------------+---------------|
| 80MB | (1) 4M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|----------+----------------+----------------+---------------|
| 88MB | (1) 8M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 96MB | (1) 8M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|----------+----------------+----------------+---------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 | None |
|----------+----------------+----------------+---------------|
| 96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|----------+----------------+----------------+---------------|
| 104MB | (1) 8M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 112MB | (1) 8M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|----------+----------------+----------------+---------------|
| 128MB | (1) 8M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|----------+----------------+----------------+---------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 | None |
|----------+----------------+----------------+---------------|
| 136MB | (1) 8M x 64 | (1) 8M x 64 | (1) 1M x 64 |
|----------+----------------+----------------+---------------|
| 144MB | (1) 8M x 64 | (1) 8M x 64 | (1) 2M x 64 |
|----------+----------------+----------------+---------------|
| 160MB | (1) 8M x 64 | (1) 8M x 64 | (1) 4M x 64 |
|----------+----------------+----------------+---------------|
| 192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------------------------------------------------------|
| Note: Board accepts SDRAM memory. To use the on board |
| VGA, bank 1 must be filled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | JP1 |
|----------------------------+-------------------------------|
| 3.3v | Pins 5 & 6, 7 & 8 closed |
|----------------------------+-------------------------------|
| 5v | Pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP2 | JP3 | JP4 |JP8 | JP9 |
| speed | speed | | | | | | |
|-------+--------+----------+------+------+------+----+------|
|133MHz | 55MHz | 2x |Closed|Closed| Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|150MHz | 60MHz | 2x |Closed| Open | Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|166MHz | 66MHz | 2x | Open | Open | Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|200MHz | 75MHz | 2x | Open |Closed|Closed|Open|Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP2 | JP3 | JP4 |JP8 | JP9 |
| speed | speed | | | | | | |
|-------+--------+----------+------+------+------+----+------|
|133MHz | 55MHz | 2x |Closed|Closed| Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|150MHz | 60MHz | 2x |Closed| Open | Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|166MHz | 66MHz | 2x | Open | Open | Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|200MHz | 75MHz | 2x | Open |Closed|Closed|Open|Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP2 | JP3 | JP4 |JP8 | JP9 |
| speed | speed | | | | | | |
|-------+--------+----------+------+------+------+----+------|
|133MHz | 55MHz | 2x |Closed|Closed| Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|150MHz | 60MHz | 2x |Closed| Open | Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|166MHz | 66MHz | 2x | Open | Open | Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|200MHz | 75MHz | 2x | Open |Closed|Closed|Open|Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86L) |
|------------------------------------------------------------|
| CPU | Clock |Multiplier| JP2 | JP3 | JP4 |JP8 | JP9 |
| speed | speed | | | | | | |
|-------+--------+----------+------+------+------+----+------|
|133MHz | 55MHz | 2x |Closed|Closed| Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|150MHz | 60MHz | 2x |Closed| Open | Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|166MHz | 66MHz | 2x | Open | Open | Open |Open|Closed|
|-------+--------+----------+------+------+------+----+------|
|200MHz | 75MHz | 2x | Open |Closed|Closed|Open|Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
| CPU |Clock |Multiplier| JP2 | JP3 | JP4 | JP8 | JP9 |
| speed |speed | | | | | | |
|-------+------+----------+------+------+------+------+------|
|166MHz |60MHz | 2.5x |Closed| Open | Open |Closed|Closed|
|-------+------+----------+------+------+------+------+------|
|200MHz |66MHz | 2.5x | Open | Open | Open |Closed|Closed|
|-------+------+----------+------+------+------+------+------|
|233MHz |66MHz | 3x | Open | Open | Open |Closed| Open |
|-------+------+----------+------+------+------+------+------|
|233MHz |75MHz | 2.5x | Open |Closed|Closed|Closed|Closed|
|-------+------+----------+------+------+------+------+------|
|266MHz |66MHz | 3.5x | Open | Open | Open | Open | Open |
|-------+------+----------+------+------+------+------+------|
|266MHz |75MHz | 3x | Open |Closed|Closed|Closed| Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP2 |JP3 |JP4 | JP8 | JP9 |
| | speed | | | | | | |
|---------+--------+----------+------+----+----+------+------|
| 90MHz | 60MHz | 1.5x |Closed|Open|Open| Open | Open |
|---------+--------+----------+------+----+----+------+------|
| 100MHz | 66MHz | 1.5x | Open |Open|Open| Open | Open |
|---------+--------+----------+------+----+----+------+------|
| 166MHz | 66MHz | 2.5x | Open |Open|Open|Closed|Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|JP2 |JP3 |JP4 | JP8 | JP9 |
| | speed | | | | | | |
|---------+----------+----------+----+----+----+------+------|
| 166MHz | 66MHz | 2.5x |Open|Open|Open|Closed|Closed|
|---------+----------+----------+----+----+----+------+------|
| 200MHz | 66MHz | 3x |Open|Open|Open|Closed| Open |
|---------+----------+----------+----+----+----+------+------|
| 233MHz | 66MHz | 3.5x |Open|Open|Open| Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier| JP2 |JP3 |JP4 | JP8 | JP9 |
| | speed | | | | | | |
|---------+--------+----------+------+----+----+------+------|
| 90MHz | 60MHz | 1.5x |Closed|Open|Open| Open | Open |
|---------+--------+----------+------+----+----+------+------|
| 100MHz | 66MHz | 1.5x | Open |Open|Open| Open | Open |
|---------+--------+----------+------+----+----+------+------|
| 120MHz | 60MHz | 2x |Closed|Open|Open| Open |Closed|
|---------+--------+----------+------+----+----+------+------|
| 133MHz | 66MHz | 2x | Open |Open|Open| Open |Closed|
|---------+--------+----------+------+----+----+------+------|
| 150MHz | 60MHz | 2.5x |Closed|Open|Open|Closed|Closed|
|---------+--------+----------+------+----+----+------+------|
| 166MHz | 66MHz | 2.5x | Open |Open|Open|Closed|Closed|
|---------+--------+----------+------+----+----+------+------|
| 180MHz | 60MHz | 3x |Closed|Open|Open|Closed| Open |
|---------+--------+----------+------+----+----+------+------|
| 200MHz | 66MHz | 3x | Open |Open|Open|Closed| Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|JP2 |JP3 |JP4 | JP8 | JP9 |
| | speed | | | | | | |
|---------+----------+----------+----+----+----+------+------|
| 166MHz | 66MHz | 2.5x |Open|Open|Open|Closed|Closed|
|---------+----------+----------+----+----+----+------+------|
| 200MHz | 66MHz | 3x |Open|Open|Open|Closed| Open |
|---------+----------+----------+----+----+----+------+------|
| 233MHz | 66MHz | 3.5x |Open|Open|Open| Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | JP6 | JP12 |
|---------+------------------------------+-------------------|
| 3.4v | Pins 1 & 2, 3 & 4, 5 & 6 | Pins 3 & 4 closed |
| | closed | |
|---------+------------------------------+-------------------|
| 3.5v | Pins 1 & 2, 3 & 4, 5 & 6 | Pins 1 & 2 closed |
| | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | JP6 | JP12 |
|--------------+------------+----------+---------------------|
| 3.4v | 2.5v | Open | Pins 11 & 12 closed |
|--------------+------------+----------+---------------------|
| 3.4v | 2.8v | Open | Pins 9 & 10 closed |
|--------------+------------+----------+---------------------|
| 3.4v | 2.9v | Open | Pins 7 & 8 closed |
|--------------+------------+----------+---------------------|
| 3.4v | 3.2v | Open | Pins 5 & 6 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS SELECTION |
|------------------------------------------------------------|
| Type | JP16 | JP17 |
|------------------+--------------------+--------------------|
| 1M/5v | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 1M/12v | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+