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# ACHITEC CORPORATION, LTD.
ACHI-152
Device Type Mainboard
Processor CX 6X86/IBM 6X86/CX 686MX/IBM 6X86MX/IDT/AM K5/
AM K6/Pentium
Processor 90/100/120/133/150/166/180/200/233/266/300/333MHz
Speed
Chip Set Intel
Video Chip None
Set
Maximum 256MB (EDO & SDRAM supported)
Onboard
Memory
Maximum None
Video Memory
Cache 512KB
BIOS Award
Dimensions 220mm x 190mm
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
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------+------------+------------------+-----------|
| ATX power | ATX | Serial port | CN2 |
| connector | | | |
|----------------+------------+------------------+-----------|
| Reset switch | C1/pins 1 | Parallel port | CN3 |
| | & 2 | | |
|----------------+------------+------------------+-----------|
| Power LED & | C1/pins 4 | Floppy drive | CN4 |
| keylock | - 8 | interface | |
|----------------+------------+------------------+-----------|
| Speaker | C1/pins 10 | IDE interface | CN5 |
| | - 13 | | |
|----------------+------------+------------------+-----------|
| Soft off power | C1/pins 15 | IDE interface | CN6 |
| supply | & 16 | | |
|----------------+------------+------------------+-----------|
| IR connector | C1/pins 21 | PS/2 mouse | CN7 |
| | - 25 | interface | |
|----------------+------------+------------------+-----------|
| Green PC | C1/pins 32 | CPU fan power | J10 |
| connector | & 33 | | |
|----------------+------------+------------------+-----------|
| Green PC LED | C1/pins 35 | 32-bit PCI slots | PC1 – PC4 |
| | & 36 | | |
|----------------+------------+------------------+-----------|
| IDE interface | C1/pins 38 | USB connector | USB |
| LED | & 39 | | |
|----------------+------------+------------------+-----------|
| Serial port | CN1 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------+-------+----------------|
| » | CMOS memory normal operation | J9 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | CMOS memory clear | J9 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 12v | J11 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 5v | J11 | Pins 2 & 3 |
| | | | 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 |
|----------------------------+-------------------------------|
| 128MB | (2) 16M x 36 |
|----------------------------+-------------------------------|
| 256MB | (2) 32M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 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. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | J1 | J3 |
|------------------+--------------------+--------------------|
| 3.3v | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 5v | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 512KB | (1) 64K x 64 |
+------------------------------------------------------------+
+----------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|----------------------------------------------------------------|
| CPU |Clock|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6|
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+------+------+-----|
|150MHz|60MHz| 2x | Open |Closed|Closed|Closed| Open |Open |
|------+-----+----------+------+------+------+------+------+-----|
|166MHz|66MHz| 2x |Closed| Open |Closed|Closed| Open |Open |
|------+-----+----------+------+------+------+------+------+-----|
|166MHz|60MHz| 2.5x | Open |Closed|Closed|Closed|Closed|Open |
|------+-----+----------+------+------+------+------+------+-----|
|200MHz|75MHz| 2x | Open |Closed| Open |Closed| Open |Open |
+----------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| J5/1 | J5/2 | J5/3 | J6/1 | J6/2 |J6/3|
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+------+------+----|
|150MHz|60MHz| 2x | Open |Closed|Closed|Closed| Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|166MHz|66MHz| 2x |Closed| Open |Closed|Closed| Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|166MHz|60MHz| 2.5x | Open |Closed|Closed|Closed|Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|200MHz|75MHz| 2x | Open |Closed| Open |Closed| Open |Open|
+---------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| J5/1 | J5/2 | J5/3 | J6/1 | J6/2 |J6/3|
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+------+------+----|
|233MHz|75MHz| 2.5x | Open |Closed| Open |Closed|Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|233MHz|66MHz| 3x |Closed| Open |Closed| Open |Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|266MHz|75MHz| 3x | Open |Closed| Open | Open |Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|266MHz|66MHz| 3.5x |Closed| Open |Closed| Open | Open |Open|
+---------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86MX) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| J5/1 | J5/2 | J5/3 | J6/1 | J6/2 |J6/3|
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+------+------+----|
|233MHz|75MHz| 2.5x | Open |Closed| Open |Closed|Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|233MHz|66MHz| 3x |Closed| Open |Closed| Open |Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|266MHz|75MHz| 3x | Open |Closed| Open | Open |Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|266MHz|66MHz| 3.5x |Closed| Open |Closed| Open | Open |Open|
+---------------------------------------------------------------+
+-------------------------------------------------------------+
| CPU SPEED SELECTION (IDT) |
|-------------------------------------------------------------|
| CPU |Clock|Multiplier| J5/1 |J5/2| J5/3 | J6/1 | J6/2 |J6/3|
|speed |speed| | | | | | | |
|------+-----+----------+------+----+------+------+------+----|
|166MHz|66MHz| 2.5x |Closed|Open|Closed|Closed|Closed|Open|
|------+-----+----------+------+----+------+------+------+----|
|200MHz|66MHz| 3x |Closed|Open|Closed| Open |Closed|Open|
+-------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| J5/1 | J5/2 | J5/3 | J6/1 | J6/2 |J6/3|
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+------+------+----|
|90MHz |60MHz| 1.5x | Open |Closed|Closed| Open | Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|100MHz|66MHz| 1.5x |Closed| Open |Closed| Open | Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|120MHz|60MHz| 2x | Open |Closed|Closed|Closed| Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|133MHz|66MHz| 2x |Closed| Open |Closed|Closed| Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|150MHz|60MHz| 2.5x | Open |Closed|Closed|Closed|Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|166MHz|66MHz| 2.5x |Closed| Open |Closed|Closed|Closed|Open|
+---------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| J5/1 |J5/2| J5/3 | J6/1 | J6/2 | J6/3 |
|speed |speed| | | | | | | |
|------+-----+----------+------+----+------+------+------+------|
|166MHz|66MHz| 2.5x |Closed|Open|Closed|Closed|Closed| Open |
|------+-----+----------+------+----+------+------+------+------|
|200MHz|66MHz| 3x |Closed|Open|Closed| Open |Closed| Open |
|------+-----+----------+------+----+------+------+------+------|
|233MHz|66MHz| 3.5x |Closed|Open|Closed| Open | Open | Open |
|------+-----+----------+------+----+------+------+------+------|
|266MHz|66MHz| 4x |Closed|Open|Closed|Closed| Open |Closed|
|------+-----+----------+------+----+------+------+------+------|
|300MHz|66MHz| 4.5x |Closed|Open|Closed|Closed|Closed|Closed|
|------+-----+----------+------+----+------+------+------+------|
|333MHz|66MHz| 5x |Closed|Open|Closed| Open |Closed|Closed|
+---------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| J5/1 | J5/2 | J5/3 | J6/1 | J6/2 |J6/3|
|speed |speed| | | | | | | |
|------+-----+----------+------+------+------+------+------+----|
|90MHz |60MHz| 1.5x | Open |Closed|Closed| Open | Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|100MHz|66MHz| 1.5x |Closed| Open |Closed| Open | Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|120MHz|60MHz| 2x | Open |Closed|Closed|Closed| Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|133MHz|66MHz| 2x |Closed| Open |Closed|Closed| Open |Open|
|------+-----+----------+------+------+------+------+------+----|
|150MHz|60MHz| 2.5x | Open |Closed|Closed|Closed|Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|166MHz|66MHz| 2.5x |Closed| Open |Closed|Closed|Closed|Open|
|------+-----+----------+------+------+------+------+------+----|
|200MHz|66MHz| 3x |Closed| Open |Closed| Open |Closed|Open|
+---------------------------------------------------------------+
+---------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|---------------------------------------------------------------|
| CPU |Clock|Multiplier| J5/1 |J5/2| J5/3 | J6/1 | J6/2 | J6/3 |
|speed |speed| | | | | | | |
|------+-----+----------+------+----+------+------+------+------|
|200MHz|66MHz| 3x |Closed|Open|Closed| Open |Closed| Open |
|------+-----+----------+------+----+------+------+------+------|
|233MHz|66MHz| 3.5x |Closed|Open|Closed| Open | Open | Open |
|------+-----+----------+------+----+------+------+------+------|
|266MHz|66MHz| 4x |Closed|Open|Closed|Closed| Open |Closed|
|------+-----+----------+------+----+------+------+------+------|
|300MHz|66MHz| 4.5x |Closed|Open|Closed|Closed|Closed|Closed|
|------+-----+----------+------+----+------+------+------+------|
|333MHz|66MHz| 5x |Closed|Open|Closed| Open |Closed|Closed|
+---------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP1/1 | JP1/2 | JP1/3 | JP1/4 |
|------------+-----------+-----------+-----------+-----------|
| 2.0 | Open | Open | Open | Open |
|------------+-----------+-----------+-----------+-----------|
| 2.1 | Closed | Open | Open | Open |
|------------+-----------+-----------+-----------+-----------|
| 2.2 | Open | Closed | Open | Open |
|------------+-----------+-----------+-----------+-----------|
| 2.3 | Closed | Closed | Open | Open |
|------------+-----------+-----------+-----------+-----------|
| 2.4 | Open | Open | Closed | Open |
|------------+-----------+-----------+-----------+-----------|
| 2.5 | Closed | Open | Closed | Open |
|------------+-----------+-----------+-----------+-----------|
| 2.6 | Open | Closed | Closed | Open |
|------------+-----------+-----------+-----------+-----------|
| 2.7 | Closed | Closed | Closed | Open |
|------------+-----------+-----------+-----------+-----------|
| 2.8 | Open | Open | Open | Closed |
|------------+-----------+-----------+-----------+-----------|
| 2.9 | Closed | Open | Open | Closed |
|------------+-----------+-----------+-----------+-----------|
| 3.0 | Open | Closed | Open | Closed |
|------------+-----------+-----------+-----------+-----------|
| 3.1 | Closed | Closed | Open | Closed |
|------------+-----------+-----------+-----------+-----------|
| 3.2 | Open | Open | Closed | Closed |
|------------+-----------+-----------+-----------+-----------|
| 3.3 | Closed | Open | Closed | Closed |
|------------+-----------+-----------+-----------+-----------|
| 3.4 | Open | Closed | Closed | Closed |
|------------+-----------+-----------+-----------+-----------|
| 3.5 | Closed | Closed | Closed | Closed |
+------------------------------------------------------------+