(TXT) View Source
# J-MARK COMPUTER CORPORATION
J-5TXA, J-5TXA/L
Device Type Mainboard
Processor CX 6X86/IBM 6X86/CX 686MX/AM K5/AM K6/Pentium
Processor Speed 90/100/120/133/150/166/200/233/266/300MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO & SDRAM supported)
Memory
Maximum Video None
Memory
Cache 512KB
BIOS Award
Dimensions 305mm x 244mm
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), IR connectors (2), USB connectors (2),
ATX power connector
NPU Options None
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| ATX power | ATX | PS/2 mouse port | J1 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Speaker | C1 | Parallel port | J3 |
|-------------------+----------+------------------+----------|
| Reset switch | C2 | Serial port 1 | J4 |
|-------------------+----------+------------------+----------|
| Turbo LED | C3 | USB connector 1 | J5 |
|-------------------+----------+------------------+----------|
| IDE interface LED | C4 | USB connector 2 | J5A |
|-------------------+----------+------------------+----------|
| Power LED & | C5 | Serial port 2 | J6 |
| keylock | | | |
|-------------------+----------+------------------+----------|
| Turbo switch | C6 | Floppy drive | J14 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Green PC | C7 | IDE interface 2 | J15 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Consumer IR | CIR1 | IDE interface 1 | J17 |
| connector | | | |
|-------------------+----------+------------------+----------|
| CPU fan power | CPU | Soft off power | JP7 |
| | | supply | |
|-------------------+----------+------------------+----------|
| IR connector | IR1 | 32-bit PCI slots | PC1 – |
| | | | PC4 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------+-------+----------------|
| | Flash BIOS voltage select 12v | JERP | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 5v | JERP | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | CMOS memory | JP6 | Unidentified |
+------------------------------------------------------------+
+------------------------------------------------------------+
| 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SIMM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 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 | TAG |
|------------------+--------------------+--------------------|
| 512KB | (1) 64K x 64 | (1) 32K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86) |
|------------------------------------------------------------|
| CPU speed | Clock speed | Multiplier | J16 |
|-----------+-------------+------------+---------------------|
| 150MHz | 60MHz | 2x | Pins 21 & 22 closed |
|-----------+-------------+------------+---------------------|
| 166MHz | 66MHz | 2x | Pins 23 & 24 closed |
|-----------+-------------+------------+---------------------|
| 200MHz | 75MHz | 2x | Pins 25 & 26 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (IBM 6X86) |
|------------------------------------------------------------|
| CPU speed | Clock speed | Multiplier | J16 |
|-----------+-------------+------------+---------------------|
| 150MHz | 60MHz | 2x | Pins 21 & 22 closed |
|-----------+-------------+------------+---------------------|
| 166MHz | 66MHz | 2x | Pins 23 & 24 closed |
|-----------+-------------+------------+---------------------|
| 200MHz | 75MHz | 2x | Pins 25 & 26 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CX 6X86MX) |
|------------------------------------------------------------|
| CPU speed | Clock speed | Multiplier | J16 |
|-----------+-------------+------------+---------------------|
| 166MHz | 60MHz | 2.5x | Pins 9 & 10 closed |
|-----------+-------------+------------+---------------------|
| 200MHz | 75MHz | 2x | Pins 25 & 26 closed |
|-----------+-------------+------------+---------------------|
| 233MHz | 66MHz | 3x | Pins 13 & 14 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
| CPU speed | Clock speed | Multiplier | J16 |
|-----------+-------------+------------+---------------------|
| 90MHz | 60MHz | 1.5x | Pins 1 & 2 closed |
|-----------+-------------+------------+---------------------|
| 100MHz | 66MHz | 1.5x | Pins 3 & 4 closed |
|-----------+-------------+------------+---------------------|
| 133MHz | 66MHz | 1.5x | Pins 3 & 4 closed |
|-----------+-------------+------------+---------------------|
| 166MHz | 66MHz | 2.5x | Pins 11 & 12 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
| CPU speed | Clock speed | Multiplier | J16 |
|-----------+-------------+------------+---------------------|
| 166MHz | 66MHz | 2.5x | Pins 11 & 12 closed |
|-----------+-------------+------------+---------------------|
| 200MHz | 66MHz | 3x | Pins 13 & 14 closed |
|-----------+-------------+------------+---------------------|
| 233MHz | 66MHz | 3.5x | Pins 15 & 16 closed |
|-----------+-------------+------------+---------------------|
| 266MHz | 66MHz | 4x | Pins 17 & 18 closed |
|-----------+-------------+------------+---------------------|
| 300MHz | 66MHz | 4.5x | Pins 19 & 20 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| CPU speed | Clock speed | Multiplier | J16 |
|-----------+-------------+------------+---------------------|
| 90MHz | 60MHz | 1.5x | Pins 1 & 2 closed |
|-----------+-------------+------------+---------------------|
| 100MHz | 66MHz | 1.5x | Pins 3 & 4 closed |
|-----------+-------------+------------+---------------------|
| 120MHz | 60MHz | 2x | Pins 5 & 6 closed |
|-----------+-------------+------------+---------------------|
| 133MHz | 66MHz | 2x | Pins 7 & 8 closed |
|-----------+-------------+------------+---------------------|
| 150MHz | 60MHz | 2.5x | Pins 9 & 10 closed |
|-----------+-------------+------------+---------------------|
| 166MHz | 66MHz | 2.5x | Pins 11 & 12 closed |
|-----------+-------------+------------+---------------------|
| 200MHz | 66MHz | 3x | Pins 13 & 14 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL MMX) |
|------------------------------------------------------------|
| CPU speed | Clock speed | Multiplier | J16 |
|-----------+-------------+------------+---------------------|
| 166MHz | 66MHz | 2.5x | Pins 11 & 12 closed |
|-----------+-------------+------------+---------------------|
| 200MHz | 66MHz | 3x | Pins 13 & 14 closed |
|-----------+-------------+------------+---------------------|
| 233MHz | 66MHz | 3.5x | Pins 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | JP1/pins 1 | JP1/pins 3 | JP1/pins 5 | JP1/pins |
| | & 2 | & 4 | & 6 | 7 & 8 |
|---------+-------------+------------+------------+----------|
| 2.04v | Closed | Closed | Closed | Open |
|---------+-------------+------------+------------+----------|
| 2.10v | Closed | Closed | Closed | Closed |
|---------+-------------+------------+------------+----------|
| 2.14v | Open | Open | Open | Closed |
|---------+-------------+------------+------------+----------|
| 2.84v | Closed | Open | Open | Open |
|---------+-------------+------------+------------+----------|
| 2.94v | Closed | Open | Open | Closed |
|---------+-------------+------------+------------+----------|
| 3.24v | Closed | Closed | Open | Open |
|---------+-------------+------------+------------+----------|
| 3.34v | Closed | Closed | Closed | Open |
|---------+-------------+------------+------------+----------|
| 3.44v | Closed | Closed | Closed | Open |
|---------+-------------+------------+------------+----------|
| 3.54v | Closed | Closed | Closed | Closed |
+------------------------------------------------------------+