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# A-TREND TECHNOLOGY CORPORATION
ATC-1020+
Processor CX M1/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 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 port, serial ports
(2), USB connector, IR connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+------------------+-----------|
| Floppy drive | CN1 | Reset switch | J1/pins 1 |
| interface | | | & 2 |
|------------------+----------+------------------+-----------|
| Parallel port | CN2 | Green PC | J1/pins 4 |
| | | connector | & 5 |
|------------------+----------+------------------+-----------|
| Serial port 1 | CN3 | Turbo LED | J1/pins 7 |
| | | | & 8 |
|------------------+----------+------------------+-----------|
| Serial port 2 | CN4 | IDE interface | J1/pins |
| | | LED | 10 & 11 |
|------------------+----------+------------------+-----------|
| USB connector | CN5 | Speaker | J1/pins |
| | | | 12 - 15 |
|------------------+----------+------------------+-----------|
| IDE interface 1 | CN6 | Power LED | J1/pins |
| | | | 17 - 19 |
|------------------+----------+------------------+-----------|
| IDE interface 2 | CN7 | Chassis fan | J2 |
| | | power | |
|------------------+----------+------------------+-----------|
| PS/2 mouse port | CN8 | 32-bit PCI slots | PC1 – PC4 |
|------------------+----------+------------------+-----------|
| IR connector | CN9 | Cache slot | SL1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------+-------+-----------------|
| » | CMOS memory normal operation | JP8 | Open |
|---+------------------------------+-------+-----------------|
| | CMOS memory clear | JP8 | Closed |
|---+------------------------------+-------+-----------------|
| » | Flash BIOS update disabled | JP19 | Pins 2 & 3 |
| | | | closed |
|---+------------------------------+-------+-----------------|
| | Flash BIOS update enabled | JP19 | Pins 1 & 2 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM 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. Banks are interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 2 |
|----------------------------+-------------------------------|
| 8MB | (1) 1M x 64 |
|----------------------------+-------------------------------|
| 16MB | (1) 2M x 64 |
|----------------------------+-------------------------------|
| 32MB | (1) 4M x 64 |
|----------------------------+-------------------------------|
| 64MB | (1) 8M x 64 |
|------------------------------------------------------------|
| Note: Do not install SIMMs & DIMMS at the same time. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 | TAG |
|-------+--------------+-------------------+-----------------|
| 256KB | (2) 32K x 8 | Not installed | (1) 16K/32K x 8 |
|-------+--------------+-------------------+-----------------|
| 256KB | None | 256KB module | (1) 16K/32K x 8 |
| | | installed | |
|-------+--------------+-------------------+-----------------|
| 512KB | (2) 64K x 32 | Not installed | (1) 16K/32K x 8 |
|-------+--------------+-------------------+-----------------|
| 512KB | None | 512KB module | (1) 16K/32K x 8 |
| | | installed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE TAG CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP17 |
|-------------------------------+----------------------------|
| Enabled | Closed |
|-------------------------------+----------------------------|
| Disabled | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier| JP4 | JP5 | JP6 | JP7 |JP9|JP10|
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+------+---+----|
|120MHz|50MHz| 2x |Closed| Open | Open | Open |1 &|2 & |
| | | | | | | | 2 | 3 |
|------+-----+----------+------+------+------+------+---+----|
|133MHz|55MHz| 2x |Closed|Closed|Closed| N/A |1 &|2 & |
| | | | | | | | 2 | 3 |
|------+-----+----------+------+------+------+------+---+----|
|150MHz|60MHz| 2x |Closed|Closed| Open |Closed|1 &|2 & |
| | | | | | | | 2 | 3 |
|------+-----+----------+------+------+------+------+---+----|
|166MHz|66MHz| 2x |Closed| Open |Closed|Closed|1 &|2 & |
| | | | | | | | 2 | 3 |
|------+-----+----------+------+------+------+------+---+----|
|200MHz|75MHz| 2x | Open |Closed|Closed| N/A |1 &|2 & |
| | | | | | | | 2 | 3 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD K5) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier| JP4 | JP5 | JP6 | JP7 |JP9|JP10|
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+------+---+----|
|75MHz |50MHz| 1.5x |Closed| Open | Open | Open |1 &|1 & |
| | | | | | | | 2 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|90MHz |60MHz| 1.5x |Closed|Closed| Open |Closed|1 &|1 & |
| | | | | | | | 2 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|100MHz|66MHz| 1.5x |Closed| Open |Closed|Closed|1 &|1 & |
| | | | | | | | 2 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|120MHz|60MHz| 1.5x |Closed|Closed| Open |Closed|1 &|1 & |
| | | | | | | | 2 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|133MHz|66MHz| 1.5x |Closed| Open |Closed|Closed|1 &|1 & |
| | | | | | | | 2 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|150MHz|60MHz| 1.5x |Closed|Closed| Open |Closed|1 &|1 & |
| | | | | | | | 2 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|166MHz|66MHz| 2.5x |Closed| Open |Closed|Closed|2 &|2 & |
| | | | | | | | 3 | 3 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD K6) |
|------------------------------------------------------------|
| CPU |Clock |Multiplier| JP4 |JP5 | JP6 | JP7 |JP9|JP10|
| speed |speed | | | | | | | |
|-------+------+----------+------+----+------+------+---+----|
|166MHz |66MHz | 2.5x |Closed|Open|Closed|Closed|2 &|2 & |
| | | | | | | | 3 | 3 |
|-------+------+----------+------+----+------+------+---+----|
|200MHz |66MHz | 3x |Closed|Open|Closed|Closed|2 &|1 & |
| | | | | | | | 3 | 2 |
|-------+------+----------+------+----+------+------+---+----|
|233MHz |66MHz | 3.5x |Closed|Open|Closed|Closed|1 &|1 & |
| | | | | | | | 2 | 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU |Clock|Multiplier| JP4 | JP5 | JP6 | JP7 |JP9|JP10|
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+------+---+----|
|75MHz |50MHz| 1.5x |Closed| Open | Open | Open |1 &|1 & |
| | | | | | | | 2 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|90MHz |60MHz| 1.5x |Closed|Closed| Open |Closed|1 &|1 & |
| | | | | | | | 2 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|100MHz|66MHz| 1.5x |Closed| Open |Closed|Closed|1 &|1 & |
| | | | | | | | 2 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|120MHz|60MHz| 2x |Closed|Closed| Open |Closed|1 &|2 & |
| | | | | | | | 2 | 3 |
|------+-----+----------+------+------+------+------+---+----|
|133MHz|66MHz| 2x |Closed| Open |Closed|Closed|1 &|2 & |
| | | | | | | | 2 | 3 |
|------+-----+----------+------+------+------+------+---+----|
|150MHz|60MHz| 2.5x |Closed|Closed| Open |Closed|2 &|2 & |
| | | | | | | | 3 | 3 |
|------+-----+----------+------+------+------+------+---+----|
|166MHz|66MHz| 2.5x |Closed| Open |Closed|Closed|2 &|2 & |
| | | | | | | | 3 | 3 |
|------+-----+----------+------+------+------+------+---+----|
|180MHz|60MHz| 3x |Closed|Closed| Open |Closed|2 &|1 & |
| | | | | | | | 3 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|200MHz|66MHz| 3x |Closed| Open |Closed|Closed|2 &|1 & |
| | | | | | | | 3 | 2 |
|------+-----+----------+------+------+------+------+---+----|
|233MHz|66MHz| 3.5x |Closed| Open |Closed|Closed|1 &|1 & |
| | | | | | | | 2 | 2 |
|------------------------------------------------------------|
|Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP11 |
|----------------------------+-------------------------------|
| 2.8v | Pins 9 & 10 closed |
|----------------------------+-------------------------------|
| 2.9v | Pins 7 & 8 closed |
|----------------------------+-------------------------------|
| 3.2v | Pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 3.3v | Pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 3.5v | Pins 1 & 2 closed |
+------------------------------------------------------------+