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# KADATCO CO., LTD.
AM-438VX
Device Type Mainboard
Processor CX 6X86/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Unidentified
Video Chip Set None
Maximum Onboard 128MB (EDO & SDRAM supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Unidentified
Dimensions 254mm x 218mm
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), cache slot, IR connector, USB
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| IDE interface LED | C1 | Floppy drive | CN3 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Reset switch | C2 | Serial port 2 | CN4 |
|-------------------+----------+------------------+----------|
| Speaker | C3 | IDE interface 1 | CN5 |
|-------------------+----------+------------------+----------|
| Power LED & | C4 | IDE interface 2 | CN6 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| CPU fan power | C5 | PS/2 mouse | CN7 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Green PC | C6 | 32-bit PCI slots | PC1 – |
| connector | | | PC4 |
|-------------------+----------+------------------+----------|
| IR connector | C7 | Cache slot | SL1 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN1 | USB connector | USB |
|-------------------+----------+------------------+----------|
| Parallel port | CN2 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|---------------------------------------+-------+------------|
| | Flash BIOS type select | JP9 | Pins 1 & 2 |
| | SST/Winbond/ATMEL/MMX | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS type select Intel | JP9 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS voltage select 12v | JP10 | Pins 2 & 3 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| | Flash BIOS voltage select 5v | JP10 | Pins 1 & 2 |
| | | | closed |
|---+-----------------------------------+-------+------------|
| » | CMOS memory normal operation | JP16 | Open |
|---+-----------------------------------+-------+------------|
| | CMOS memory clear | JP16 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M 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 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 |
|------------------------------------------------------------|
| Note: Board accepts SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 |
|--------------+---------------+-----------------------------|
| 256KB | None | 256KB module installed |
|--------------+---------------+-----------------------------|
| 256KB | 256KB | Not installed |
|--------------+---------------+-----------------------------|
| 512KB | None | 512KB module installed |
|--------------+---------------+-----------------------------|
| 512KB | 512KB | Not installed |
|--------------+---------------+-----------------------------|
| 512KB | 256KB | 256KB module installed |
|------------------------------------------------------------|
| Note: The size and location of bank 0 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP3 | JP4 | JP6 | JP7 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 120MHz | 50MHz | 2x | 2 & 3 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 133MHz | 55MHz | 2x | 2 & 3 | 1 & 2 | 2 & | 1 & |
| | | | | | 3 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2x | 2 & 3 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2x | 2 & 3 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 66MHz | 1.5x | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP3 | JP4 | JP6 | JP7 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 75MHz | 50MHz | 1.5x | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 90MHz | 60MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 100MHz | 66MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 120MHz | 60MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 133MHz | 66MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2x | 2 & 3 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2x | 2 & 3 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU | Clock | Multiplier | JP3 | JP4 | JP6 | JP7 |
| speed | speed | | | | | |
|--------+--------+------------+-------+-------+------+------|
| 75MHz | 50MHz | 1.5x | 1 & 2 | 1 & 2 | 2 & | 2 & |
| | | | | | 3 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 90MHz | 60MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 100MHz | 66MHz | 1.5x | 1 & 2 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 120MHz | 60MHz | 2x | 2 & 3 | 1 & 2 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 133MHz | 66MHz | 2x | 2 & 3 | 1 & 2 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 150MHz | 60MHz | 2.5x | 2 & 3 | 2 & 3 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 166MHz | 66MHz | 2.5x | 2 & 3 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|--------+--------+------------+-------+-------+------+------|
| 180MHz | 60MHz | 3x | 1 & 2 | 2 & 3 | 1 & | 2 & |
| | | | | | 2 | 3 |
|--------+--------+------------+-------+-------+------+------|
| 200MHz | 66MHz | 3x | 1 & 2 | 2 & 3 | 1 & | 1 & |
| | | | | | 2 | 2 |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | J13 | J14 | J15 | J16 |
|---------+--------------+-----------+-----------+-----------|
| Cyrix | Pins 2 & 3 | Pins 2 & | Pins 2 & | Pins 2 & |
| | closed | 3 closed | 3 closed | 3 closed |
|---------+--------------+-----------+-----------+-----------|
| AMD (B, | Pins 2 & 3 | Pins 2 & | Pins 2 & | Pins 2 & |
| C, F) | closed | 3 closed | 3 closed | 3 closed |
|---------+--------------+-----------+-----------+-----------|
| AMD (H, | Pins 1 & 2 | Pins 1 & | Pins 1 & | Pins 1 & |
| J, K) | closed | 2 closed | 2 closed | 2 closed |
|---------+--------------+-----------+-----------+-----------|
| P54C | Pins 2 & 3 | Pins 2 & | Pins 2 & | Pins 2 & |
| | closed | 3 closed | 3 closed | 3 closed |
|---------+--------------+-----------+-----------+-----------|
| P55C | Pins 1 & 2 | Pins 1 & | Pins 1 & | Pins 1 & |
| | closed | 2 closed | 2 closed | 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP17 |
|----------------------------+-------------------------------|
| STD | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| VRE | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP5 |
|----------------------------+-------------------------------|
| 2.5v | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2.7v | Pins 3 & 4 closed |
|----------------------------+-------------------------------|
| 2.93v | Pins 5 & 6 closed |
|----------------------------+-------------------------------|
| 3.38v | Pins 7 & 8 closed |
|----------------------------+-------------------------------|
| 3.52v | Pins 9 & 10 closed |
+------------------------------------------------------------+