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 |