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# A-TREND TECHNOLOGY CORPORATION
ATC-5050
Device Type Mainboard
Processor CX 6X86L/CX 6X86MX/AM K5/AM
K6/Pentium/Pentium MMX
Processor Speed 120/133/150/166/180/200/233MHz
Chip Set Intel 430TX
Maximum Onboard 256MB (EDO & SDRAM supported)
Memory
Cache 512KB
BIOS Award
Dimensions 280mm x 220mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), IR connector, USB connector, ATX
power connector
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+-------------+-----------------+-----------|
| ATX power | ATX | Serial port 2 | CN2 |
| connector | | | |
|----------------+-------------+-----------------+-----------|
| Reset switch | C1/pins 1 & | Parallel port | CN3 |
| | 2 | | |
|----------------+-------------+-----------------+-----------|
| Green PC | C1/pins 4 & | Floppy drive | CN4 |
| connector | 5 | interface | |
|----------------+-------------+-----------------+-----------|
| Turbo LED | C1/pins 7 & | IDE interface 2 | CN5 |
| | 8 | | |
|----------------+-------------+-----------------+-----------|
| IDE interface | C1/pins 10 | IDE interface 1 | CN6 |
| LED | & 11 | | |
|----------------+-------------+-----------------+-----------|
| Soft off power | C1/pins 12 | PS/2 mouse | CN7 |
| supply | & 24 | interface | |
|----------------+-------------+-----------------+-----------|
| Speaker | C1/pins 13 | IR connector | IR1 |
| | – 16 | | |
|----------------+-------------+-----------------+-----------|
| Power LED & | C1/pins 18 | 32-bit PCI | PC1 – PC4 |
| keylock | & 20 | slots | |
|----------------+-------------+-----------------+-----------|
| Chassis fan | C2 | USB connector | USB |
| power | | | |
|----------------+-------------+-----------------+-----------|
| Serial port 1 | CN1 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP3 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP3 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Power supply select AT | JP5 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Power supply select ATX | JP5 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured – do not | SW1/6 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 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 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 2 | Bank 3 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 64 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 64 | None |
|------------------+--------------------+--------------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 128MB | (1) 16M x 64 | None |
|------------------+--------------------+--------------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 |
|------------------+--------------------+--------------------|
| 136MB | (1) 16M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 144MB | (1) 16M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 160MB | (1) 16M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 192MB | (1) 16M x 64 | (1) 8M x 64 |
|------------------+--------------------+--------------------|
| 256MB | (1) 16M x 64 | (1) 16M x 64 |
|------------------------------------------------------------|
| Note: Board accepts SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86L) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW2/1|SW2/2|SW2/3|SW2/4|SW2/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | On | On | Off | On | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | On | On | On | On | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 75MHz | 2x | On | Off | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW2/1|SW2/2|SW2/3|SW2/4|SW2/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2x | On | On | Off | On | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2x | On | On | On | On | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 60MHz | 2.5x | On | On | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 2.5x | On | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 75MHz | 2x | On | Off | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW2/1|SW2/2|SW2/3|SW2/4|SW2/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 90MHz | 60MHz | 1.5x | On | On | Off | Off | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 100MHz | 66MHz | 1.5x | On | On | On | Off | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 1.5x | On | On | Off | Off | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 1.5x | On | On | On | Off | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | On | On | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW2/1|SW2/2|SW2/3|SW2/4|SW2/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | On | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | On | On | On | Off | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | On | On | On | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW2/1|SW2/2|SW2/3|SW2/4|SW2/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 120MHz | 60MHz | 2x | On | On | Off | On | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 133MHz | 66MHz | 2x | On | On | On | On | Off |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 150MHz | 60MHz | 2.5x | On | On | Off | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | On | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 180MHz | 60MHz | 3x | On | On | Off | Off | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | On | On | On | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|SW2/1|SW2/2|SW2/3|SW2/4|SW2/5|
| | speed | | | | | | |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 166MHz | 66MHz | 2.5x | On | On | On | On | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 200MHz | 66MHz | 3x | On | On | On | Off | On |
|---------+---------+----------+-----+-----+-----+-----+-----|
| 233MHz | 66MHz | 3.5x | On | On | On | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | SW1/1 | SW1/2 | SW1/3 | SW1/4 |
|------------+-----------+-----------+-----------+-----------|
| 2.8v | On | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 2.9v | On | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 3.3v | On | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 3.5v | On | On | On | On |
+------------------------------------------------------------+