J-MARK COMPUTER CORPORATION
J-656VXC
|
Processor |
CX M1/AM K5/Pentium |
|
Processor Speed |
75/90/100/120/133/150/166/200MHz |
|
Chip Set |
Intel |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
128MB (EDO supported) |
|
Maximum Video Memory |
None |
|
Cache |
256/512KB |
|
BIOS |
Award |
|
Dimensions |
254mm x 218mm |
|
I/O Options |
32-bit PCI slots (3), floppy drive interface, green PC connector, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), USB connectors (2) |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Speaker |
CN1 |
IDE interface 1 |
J4 |
|
Reset switch |
CN2 |
Serial port 2 |
J5 |
|
Turbo LED |
CN3 |
IDE interface 2 |
J6 |
|
IDE interface LED |
CN4 |
Serial port 1 |
J7 |
|
Power LED & keylock |
CN5 |
Floppy drive interface |
J8 |
|
Turbo switch |
CN6 |
USB connector |
J9 |
|
Green PC connector |
CN7 |
USB connector |
J10 |
|
PS/2 mouse interface |
J1 |
External battery |
JP4 |
|
Parallel port |
J3 |
32-bit PCI slots |
PC1 PC4 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Factory configured - do not alter |
JP2 |
Unidentified |
|
|
Factory configured - do not alter |
JP9 |
Unidentified |
|
Monitor type select color |
JP13 |
Closed | |
|
Monitor type select monochrome |
JP13 |
Open | |
|
Flash BIOS voltage select 12v |
JP14 |
Pins 1 & 2 closed | |
|
Flash BIOS voltage select 5v |
JP14 |
Pins 2 & 3 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 |
|
CACHE CONFIGURATION | ||
|
Size |
Bank 0 |
TAG |
|
256KB |
(2) 32K x 32 |
(1) 32K x 8 |
|
512KB |
(2) 64K x 32 |
(1) 32K x 8 |
|
CPU SPEED SELECTION (CYRIX) | |||||||
|
CPU speed |
Clock speed |
Multiplier |
JP6 |
JP7 |
JP8 |
JP18 |
JP19 |
|
120MHz |
50MHz |
2x |
Closed |
Closed |
Open |
Closed |
Open |
|
133MHz |
55MHz |
2x |
Open |
Open |
Open |
Closed |
Open |
|
150MHz |
60MHz |
2x |
Open |
Closed |
Open |
Closed |
Open |
|
166MHz |
66MHz |
2x |
Closed |
Open |
Open |
Closed |
Open |
|
CPU SPEED SELECTION (AMD) | |||||||
|
CPU speed |
Clock speed |
Multiplier |
JP6 |
JP7 |
JP8 |
JP18 |
JP19 |
|
90MHz |
60MHz |
1.5x |
Open |
Closed |
Open |
Open |
Open |
|
100MHz |
66MHz |
1.5x |
Closed |
Open |
Open |
Open |
Open |
|
CPU SPEED SELECTION (INTEL) | |||||||
|
CPU speed |
Clock speed |
Multiplier |
JP6 |
JP7 |
JP8 |
JP18 |
JP19 |
|
75MHz |
50MHz |
1.5x |
Closed |
Closed |
Open |
Open |
Open |
|
90MHz |
60MHz |
1.5x |
Open |
Closed |
Open |
Open |
Open |
|
100MHz |
66MHz |
1.5x |
Closed |
Open |
Open |
Open |
Open |
|
120MHz |
60MHz |
2x |
Open |
Closed |
Open |
Closed |
Open |
|
133MHz |
66MHz |
2x |
Closed |
Open |
Open |
Closed |
Open |
|
150MHz |
60MHz |
2.5x |
Open |
Closed |
Open |
Closed |
Closed |
|
166MHz |
66MHz |
2.5x |
Closed |
Open |
Open |
Closed |
Closed |
|
200MHz |
66MHz |
3x |
Closed |
Open |
Open |
Open |
Closed |
|
CPU TYPE SELECTION | |
|
Type |
JP3 |
|
P54C |
Pins 1 & 2, 3 & 4, 5 & 6 closed |
|
P55C |
Open |
|
CPU VOLTAGE SELECTION (SINGLE) | |||
|
Voltage |
JP15 |
JP16 |
JP17 |
|
3.3v |
Closed |
Open |
Open |
|
3.45v |
Open |
Closed |
Open |
|
3.52v |
Open |
Open |
Closed |
|
CPU VOLTAGE SELECTION (DUAL) | |||||||
|
Voltage |
V core |
JP10 |
JP11 |
JP12 |
JP15 |
JP16 |
JP17 |
|
3.3v |
2.5v |
Closed |
Open |
Open |
Closed |
Open |
Open |
|
3.3v |
2.8v |
Open |
Closed |
Open |
Closed |
Open |
Open |
|
3.3v |
3.45v |
Open |
Open |
Closed |
Closed |
Open |
Open |
|
3.45v |
2.5v |
Closed |
Open |
Open |
Open |
Open |
Open |
|
3.45v |
2.8v |
Open |
Closed |
Open |
Open |
Closed |
Open |
|
3.45v |
3.45v |
Open |
Open |
Closed |
Open |
Closed |
Open |
|
3.52v |
2.5v |
Closed |
Open |
Open |
Open |
Open |
Closed |
|
3.52v |
2.8v |
Open |
Closed |
Open |
Open |
Closed |
Closed |
|
3.52v |
3.45v |
Open |
Open |
Closed |
Open |
Open |
Closed |
MOS
|
CMOS SELECTION | |||
|
Setting |
JP4 |
JP5 | |
|
CMOS memory normal operation |
Pins 2 & 3 closed |
Open | |
|
CMOS memory clear |
Pins 3 & 4 closed |
Closed | |