J-MARK COMPUTER CORPORATION
J-656HXA
|
Processor |
Pentium |
|
Processor Speed |
75/90/100/120/133/150/166/200MHz |
|
Chip Set |
Intel |
|
Video Chip Set |
None |
|
Maximum Onboard Memory |
384MB |
|
Maximum Video Memory |
None |
|
Cache |
256/512KB |
|
BIOS |
Award |
|
Dimensions |
280mm x 220mm |
|
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), cache slot, IR connector |
|
NPU Options |
None |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
Serial port 1 |
CN1 |
Reset switch |
J5 |
|
Serial port 2 |
CN2 |
IDE interface LED |
J6 |
|
Floppy drive interface |
CN3 |
Power LED & keylock |
J7 |
|
Parallel port |
CN4 |
Turbo LED |
J8 |
|
IDE interface 2 |
CN5 |
Green PC connector |
JP16 |
|
IDE interface 1 |
CN6 |
Chassis fan power |
JP36 |
|
PS/2 mouse interface |
J2 |
IR connector |
JP37 |
|
Speaker |
J4 |
32-bit PCI slots |
PC1 – PC3 |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
» |
CMOS memory normal operation |
J12 |
Pins 2 & 3 closed |
|
CMOS memory clear |
J12 |
Pins 3 & 4 closed | |
|
Monitor type select color |
JP2 |
Closed | |
|
Monitor type select monochrome |
JP2 |
Open | |
|
PS/2 mouse IRQ12 enabled |
JPS1 |
Closed | |
|
PS/2 mouse IRQ12 disabled |
JPS1 |
Open | |
|
Flash BIOS voltage select 12v |
JP17 |
Pins 1 & 2 closed | |
|
Flash BIOS voltage select 5v |
JP17 |
Pins 2 & 3 closed | |
|
» |
Factory configured - do not alter |
JP26 |
Unidentified |
|
» |
Factory configured - do not alter |
JP30 |
Unidentified |
|
DRAM CONFIGURATION | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
8MB |
(2) 1M x 36 |
None |
None |
|
16MB |
(2) 2M x 36 |
None |
None |
|
16MB |
(2) 1M x 36 |
(2) 1M x 36 |
None |
|
24MB |
(2) 1M x 36 |
(2) 2M x 36 |
None |
|
24MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 1M x 36 |
|
24MB |
(2) 2M x 36 |
(2) 1M x 36 |
None |
|
32MB |
(2) 4M x 36 |
None |
None |
|
32MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 2M x 36 |
|
32MB |
(2) 2M x 36 |
(2) 2M x 36 |
None |
|
40MB |
(2) 1M x 36 |
(2) 4M x 36 |
None |
|
48MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 4M x 36 |
|
48MB |
(2) 2M x 36 |
(2) 4M x 36 |
None |
|
48MB |
(2) 2M x 36 |
(2) 2M x 36 |
(2) 2M x 36 |
|
64MB |
(2) 8M x 36 |
None |
None |
|
64MB |
(2) 2M x 36 |
(2) 2M x 36 |
(2) 4M x 36 |
|
64MB |
(2) 4M x 36 |
(2) 4M x 36 |
None |
|
72MB |
(2) 1M x 36 |
(2) 8M x 36 |
None |
|
DRAM CONFIGURATION (CON’T) | |||
|
Size |
Bank 0 |
Bank 1 |
Bank 2 |
|
72MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 1M x 36 |
|
80MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 8M x 36 |
|
80MB |
(2) 2M x 36 |
(2) 8M x 36 |
None |
|
80MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 2M x 36 |
|
96MB |
(2) 2M x 36 |
(2) 2M x 36 |
(2) 8M x 36 |
|
96MB |
(2) 4M x 36 |
(2) 8M x 36 |
None |
|
96MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 4M x 36 |
|
128MB |
(2) 16M x 36 |
None |
None |
|
128MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 8M x 36 |
|
128MB |
(2) 8M x 36 |
(2) 8M x 36 |
None |
|
136MB |
(2) 1M x 36 |
(2) 16M x 36 |
None |
|
136MB |
(2) 8M x 36 |
(2) 8M x 36 |
(2) 1M x 36 |
|
144MB |
(2) 1M x 36 |
(2) 1M x 36 |
(2) 16M x 36 |
|
144MB |
(2) 2M x 36 |
(2) 16M x 36 |
None |
|
144MB |
(2) 8M x 36 |
(2) 8M x 36 |
(2) 2M x 36 |
|
160MB |
(2) 2M x 36 |
(2) 2M x 36 |
(2) 16M x 36 |
|
160MB |
(2) 4M x 36 |
(2) 16M x 36 |
None |
|
160MB |
(2) 8M x 36 |
(2) 8M x 36 |
(2) 4M x 36 |
|
192MB |
(2) 4M x 36 |
(2) 4M x 36 |
(2) 16M x 36 |
|
192MB |
(2) 8M x 36 |
(2) 16M x 36 |
None |
|
192MB |
(2) 8M x 36 |
(2) 8M x 36 |
(2) 8M x 36 |
|
256MB |
(2) 8M x 36 |
(2) 8M x 36 |
(2) 16M x 36 |
|
264MB |
(2) 16M x 36 |
(2) 16M x 36 |
(2) 1M x 36 |
|
272MB |
(2) 16M x 36 |
(2) 16M x 36 |
(2) 2M x 36 |
|
288MB |
(2) 16M x 36 |
(2) 16M x 36 |
(2) 4M x 36 |
|
320MB |
(2) 16M x 36 |
(2) 16M x 36 |
(2) 8M x 36 |
|
384MB |
(2) 16M x 36 |
(2) 16M x 36 |
(2) 16M x 36 |
|
Note: Board accepts EDO memory. | |||
|
CACHE CONFIGURATION | |||
|
Size |
Bank 0 |
SL1 |
TAG |
|
256KB (A) |
(2) 32K x 32 |
Not installed |
(1) 32K x 8 |
|
256KB (B) |
None |
256KB module installed |
(1) 32K x 8 |
|
512KB (A) |
(2) 32K x 32 |
256KB module installed |
(1) 32K x 8 |
|
512KB (B) |
(2) 64K x 32 |
Not installed |
(1) 32K x 8 |
|
CACHE JUMPER CONFIGURATION | |||
|
Size |
JP19 |
JP20 |
JP35 |
|
256KB (A) |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
256KB (B) |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
Pins 1 & 2 closed |
|
512KB (A) |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
512KB (B) |
Pins 1 & 2 closed |
Pins 1 & 2 closed |
Pins 2 & 3 closed |
|
CPU SPEED SELECTION | |||||
|
CPU speed |
Clock speed |
Multiplier |
JP22 |
JP23 |
JP41 |
|
75MHz |
50MHz |
1.5x |
Open |
Open |
1 & 2, 3 & 4 |
|
90MHz |
60MHz |
1.5x |
Open |
Open |
1 & 2 |
|
100MHz |
66MHz |
1.5x |
Open |
Open |
3 & 4 |
|
120MHz |
60MHz |
2x |
Closed |
Open |
1 & 2 |
|
133MHz |
66MHz |
2x |
Closed |
Open |
3 & 4 |
|
150MHz |
60MHz |
2.5x |
Closed |
Closed |
1 & 2 |
|
166MHz |
66MHz |
2.5x |
Closed |
Closed |
3 & 4 |
|
200MHz |
66MHz |
3x |
Open |
Closed |
3 & 4 |
|
Note: Pins designated should be in the closed position. | |||||
|
CPU VOLTAGE SELECTION | |||
|
Voltage |
JP32 |
JP33 |
JP34 |
|
3.3v |
Closed |
Open |
Open |
|
3.45v |
Open |
Closed |
Open |
|
3.52v |
Open |
Open |
Closed |