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# J-MARK COMPUTER CORPORATION
J-597A
Device Type Mainboard
Processor CX 6X86/IBM 6X86/CX 686MX/IDT C6/AM K5/AM
K6/Pentium/Pentium MMX
Processor Speed 90/100/120/133/150/166/180/200/233/266/300MHz
Chip Set VIA VP3
Maximum Onboard 384MB (EDO & SDRAM supported)
Memory
Cache 512/1024KB
BIOS Unidentified
Dimensions 220mm x 170mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
IDE interfaces (2), parallel port, PS/2 mouse
interface, serial ports (2), IR connector,
USB connector, ATX power connector, AGP slot
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| AGP slot | AGP | PS/2 mouse | CN2 |
| | | interface | |
|-------------------+----------+------------------+----------|
| ATX power | ATX | Serial port 2 | CN4 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Turbo LED | C1 | Serial port 1 | CN5 |
|-------------------+----------+------------------+----------|
| Reset switch | C2 | IDE interface 2 | CN6 |
|-------------------+----------+------------------+----------|
| Speaker | C3 | IDE interface 1 | CN7 |
|-------------------+----------+------------------+----------|
| Turbo switch | C4 | Floppy drive | CN8 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Power LED & | C5 | Parallel port | CN9 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| IDE interface LED | C6 | IR connector | IR1 |
|-------------------+----------+------------------+----------|
| Soft off power | C7 | 32-bit PCI slots | PC1 – |
| supply | | | PC4 |
|-------------------+----------+------------------+----------|
| CPU fan power | C8 | USB connector | USB |
|-------------------+----------+------------------+----------|
| CPU fan power | C9 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | CMOS memory normal operation | J3 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | J3 | Pins 3 & 4 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 12v | JP1 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS voltage select 5v | JP1 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP2 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|-------------+---------------+---------------+--------------|
| 8MB | (1) 1M x 64 | None | None |
|-------------+---------------+---------------+--------------|
| 16MB | (1) 2M x 64 | None | None |
|-------------+---------------+---------------+--------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 | None |
|-------------+---------------+---------------+--------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 | None |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 |
|------------+---------------+---------------+---------------|
| 24MB | (1) 1M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 4M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 40MB | (1) 2M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 48MB | (1) 4M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 64MB | (1) 8M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 64MB | (1) 4M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 80MB | (1) 4M x 64 | (1) 4M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 88MB | (1) 8M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 96MB | (1) 8M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 96MB | (1) 4M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 104MB | (1) 8M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 16M x 64 | None | None |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 136MB | (1) 16M x 64 | (1) 1M x 64 | None |
|------------+---------------+---------------+---------------|
| 136MB | (1) 8M x 64 | (1) 8M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 1M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 144MB | (1) 16M x 64 | (1) 2M x 64 | None |
|------------+---------------+---------------+---------------|
| 144MB | (1) 8M x 64 | (1) 8M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 152MB | (1) 16M x 64 | (1) 2M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 160MB | (1) 16M x 64 | (1) 2M x 64 | (1) 2M x 64 |
|------------+---------------+---------------+---------------|
| 160MB | (1) 16M x 64 | (1) 4M x 64 | None |
|------------+---------------+---------------+---------------|
| 160MB | (1) 8M x 64 | (1) 8M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 168MB | (1) 16M x 64 | (1) 4M x 64 | (1) 1M x 64 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 16M x 64 | (1) 4M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 192MB | (1) 16M x 64 | (1) 8M x 64 | None |
|------------+---------------+---------------+---------------|
| 192MB | (1) 8M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------+---------------+---------------+---------------|
| 224MB | (1) 16M x 64 | (1) 8M x 64 | (1) 4M x 64 |
|------------+---------------+---------------+---------------|
| 256MB | (1) 16M x 64 | (1) 8M x 64 | (1) 8M x 64 |
|------------+---------------+---------------+---------------|
| 384MB | (1) 16M x 64 | (1) 16M x 64 | (1) 16M x 64 |
|------------------------------------------------------------|
| Note: Board accepts SDRAM memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 512KB | (2) 32K x 64 | (1) 32K x 8 |
|------------------+--------------------+--------------------|
| 1MB | (2) 64K x 64 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
| | speed | | | | | | | |
|---------+---------+----------+----+----+----+----+----+----|
| 150MHz | 60MHz | 2x | On |Off |Off | On |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 166MHz | 66MHz | 2x | On |Off |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 200MHz | 75MHz | 2x | On |Off |Off |Off | On |Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
| | speed | | | | | | | |
|---------+---------+----------+----+----+----+----+----+----|
| 150MHz | 60MHz | 2x | On |Off |Off | On |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 166MHz | 66MHz | 2x | On |Off |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 200MHz | 75MHz | 2x | On |Off |Off |Off | On |Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
| | speed | | | | | | | |
|---------+---------+----------+----+----+----+----+----+----|
| 166MHz | 60MHz | 2.5x | On | On |Off | On |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 200MHz | 66MHz | 2.5x | On | On |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 200MHz | 75MHz | 2x | On |Off |Off |Off | On |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 233MHz | 66MHz | 3x |Off | On |Off |Off |Off |Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IDT C6) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
| | speed | | | | | | | |
|---------+---------+----------+----+----+----+----+----+----|
| 150MHz | 75MHz | 2x | On |Off |Off |Off | On |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 180MHz | 60MHz | 3x |Off | On |Off | On |Off |Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
| | speed | | | | | | | |
|---------+---------+----------+----+----+----+----+----+----|
| 90MHz | 60MHz | 1.5x |Off |Off |Off | On |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 100MHz | 66MHz | 1.5x |Off |Off |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 133MHz | 66MHz | 1.5x |Off |Off |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 166MHz | 66MHz | 2.5x | On | On |Off |Off |Off |Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
| | speed | | | | | | | |
|---------+---------+----------+----+----+----+----+----+----|
| 166MHz | 66MHz | 2.5x | On | On |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 200MHz | 66MHz | 3x |Off | On |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 233MHz | 66MHz | 3.5x |Off |Off |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 266MHz | 66MHz | 4x | On |Off | On |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 300MHz | 66MHz | 4.5x | On | On | On |Off |Off |Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
| | speed | | | | | | | |
|---------+---------+----------+----+----+----+----+----+----|
| 90MHz | 60MHz | 1.5x |Off |Off |Off | On |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 100MHz | 66MHz | 1.5x |Off |Off |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 120MHz | 60MHz | 2x | On |Off |Off | On |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 133MHz | 66MHz | 2x | On |Off |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 150MHz | 60MHz | 2.5x | On | On |Off | On |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 166MHz | 66MHz | 2.5x | On | On |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 200MHz | 66MHz | 3x |Off | On |Off |Off |Off |Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
|CPU speed| Clock |Multiplier|U2/1|U2/2|U2/3|U2/4|U2/5|U2/6|
| | speed | | | | | | | |
|---------+---------+----------+----+----+----+----+----+----|
| 166MHz | 66MHz | 2.5x | On | On |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 200MHz | 66MHz | 3x |Off | On |Off |Off |Off |Off |
|---------+---------+----------+----+----+----+----+----+----|
| 233MHz | 66MHz | 3.5x |Off |Off |Off |Off |Off |Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | J4/1 | J4/2 | J4/3 | J4/4 |
|------------+-----------+-----------+-----------+-----------|
| Auto | Off | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 2.1v | On | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 2.2v | Off | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 2.8v | Off | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 2.9v | On | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 3.2v | Off | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 3.3v | On | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 3.45v | Off | On | On | On |
|------------+-----------+-----------+-----------+-----------|
| 3.52v | On | On | On | On |
+------------------------------------------------------------+