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# ADVANCED INTEGRATION RESEARCH, INC.
55TX-I
Processor CX M1/CX M2/AM K5/AM K6/Pentium
Processor 90/100/120/133/150/166/180/200/233/266/300/333/
Speed 366MHz
Chip Set Intel
Video Chip Set None
Maximum 256MB (EDO supported)
Onboard Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 304mm x 215mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse port, serial ports
(2), IR connector, USB connector, ATX power
connector
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| ATX power | ATX | IR connector | J1B |
| connector | | | |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN1 | Soft off power | J1C |
| | | supply | |
|-------------------+----------+------------------+----------|
| Parallel port | CN2 | Green PC | J1D |
| | | connector | |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN3 | Speaker | J2A |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN4 | Reset switch | J2B |
|-------------------+----------+------------------+----------|
| Floppy drive | CN5 | Power LED & | J2C |
| interface | | keylock | |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN6 | Turbo LED | J2D |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN7 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J1A | USB connector | USB |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP11 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP11 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS programming disabled | JP19 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS programming enabled | JP19 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | SW1/6 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 4MB | (2) 512K x | None | None | None |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 8MB | (2) 1M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 8MB | None | None | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 2M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | None | None | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 1M x 36 | None | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | None | None | (1) 1M x | (1) 1M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 24MB | None | (2) 2M x 36 | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 4M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | None | None | (1) 4M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 2M x 36 | None | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 4M x 36 | None | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 48MB | (2) 2M x 36 | None | (1) 4M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 48MB | (2) 4M x 36 | None | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 64MB | (2) 8M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 64MB | None | None | None | (1) 8M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 | None | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 64MB | (2) 4M x 36 | None | (1) 4M x | None |
| | | | 64 | |
|-------+-------------+------------+------------+------------|
| 64MB | None | None | (1) 4M x | (1) 4M x |
| | | | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 72MB | (2) 8M x 36 | (2) 1M x | None | None |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 72MB | (2) 8M x 36 | None | (1) 1M x | None |
| | | | 64 | |
|-------+-------------+------------+------------+------------|
| 80MB | None | (2) 2M x | (1) 8M x | None |
| | | 36 | 64 | |
|-------+-------------+------------+------------+------------|
| 80MB | (2) 8M x 36 | (2) 2M x | None | None |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 96MB | (2) 4M x 36 | None | (1) 8M x | None |
| | | | 64 | |
|-------+-------------+------------+------------+------------|
| 96MB | (2) 8M x 36 | (2) 4M x | None | None |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 96MB | None | (2) 8M x | (1) 4M x | None |
| | | 36 | 64 | |
|-------+-------------+------------+------------+------------|
| 128MB | (2) 8M x 36 | None | (1) 8M x | None |
| | | | 64 | |
|-------+-------------+------------+------------+------------|
| 128MB | None | None | (1) 8M x | (1) 8M x |
| | | | 64 | 64 |
|-------+-------------+------------+------------+------------|
| 128MB | (2) 8M x 36 | (2) 8M x | None | None |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 128MB | (2) 16M x | None | None | None |
| | 36 | | | |
|-------+-------------+------------+------------+------------|
| 136MB | (2) 16M x | (2) 1M x | None | None |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 136MB | (2) 16M x | None | (1) 1M x | None |
| | 36 | | 64 | |
|-------+-------------+------------+------------+------------|
| 144MB | (2) 16M x | None | (1) 2M x | None |
| | 36 | | 64 | |
|-------+-------------+------------+------------+------------|
| 144MB | (2) 16M x | (2) 2M x | None | None |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 160MB | (2) 16M x | (2) 4M x | None | None |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 160MB | (2) 16M x | None | (1) 4M x | None |
| | 36 | | 64 | |
|-------+-------------+------------+------------+------------|
| 192MB | (2) 16M x | None | (1) 8M x | None |
| | 36 | | 64 | |
|-------+-------------+------------+------------+------------|
| 192MB | (2) 16M x | (2) 8M x | None | None |
| | 36 | 36 | | |
|-------+-------------+------------+------------+------------|
| 256MB | (2) 16M x | (2) 16M x | None | None |
| | 36 | 36 | | |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 256KB | (2) 32K x 32 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX M1) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 133MHz | 55MHz | 2x | Off | On | Off | Off | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | Off | On | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | Off | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 75MHz | 2x | Off | On | On | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX M1) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 133MHz | 55MHz | 2x | Off | On | Off | Off | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | Off | On | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | Off | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 75MHz | 2x | Off | On | On | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX M2) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | Off | Off | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | On | Off | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | On | On | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD K5) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x | On | On | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x | On | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 2x | Off | On | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 2x | Off | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2.5x | Off | Off | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | Off | Off | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD K6) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | Off | Off | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | On | Off | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | On | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 266MHz | 66MHz | 4x | Off | On | On | On | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 300MHz | 66MHz | 4.5x | Off | Off | On | On | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 333MHz | 66MHz | 5x | On | Off | On | On | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 366MHz | 66MHz | 5.5x | On | On | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW1/1|SW1/2|SW1/3|SW1/4|SW1/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x | On | On | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x | On | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 2x | Off | On | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 2x | Off | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2.5x | Off | Off | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | Off | Off | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 180MHz | 60MHz | 3x | On | Off | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | On | Off | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | On | On | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP3 |
|--------------------------+---------------------------------|
| 2.8v | Open |
|--------------------------+---------------------------------|
| 2.9v | Pins 1 & 2 closed |
|--------------------------+---------------------------------|
| 3.0v | Pins 3 & 4 closed |
|--------------------------+---------------------------------|
| 3.1v | Pins 1 & 2, 3 & 4, closed |
|--------------------------+---------------------------------|
| 3.2v | Pins 5 & 6 closed |
|--------------------------+---------------------------------|
| 3.3v | Pins 1 & 2, 5 & 6 closed |
|--------------------------+---------------------------------|
| 3.4v | Pins 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 3.5v | Pins 1 & 2, 3 & 4, 5 & 6 closed |
+------------------------------------------------------------+