J-MARK COMPUTER CORPORATION
J-620BF
| Device Type | Mainboard |
| Processor | Celeron |
| Processor Speed | 300/333/366/400/433MHz |
| Chip Set | SIS |
| Maximum Onboard Memory | 1.5GB (SDRAM supported) (Unified Memory Architecture UMA) |
| Audio Chip Set | ESS |
| Cache | 0/128KB (located on Celeron CPU) |
| BIOS | Award |
| Dimensions | 220mm x 220mm |
| I/O Options | 16-bit ISA slots (2), 32-bit PCI slots (3), floppy drive interface, game interface, green PC connector, IDE interfaces (2), parallel port, AT keyboard port, PS/2 mouse interface, serial interfaces (2), VGA interface, IR connector, USB interface, AT power connector, ATX power connector, audio in – CD-ROMs (2), Wake-on-LAN connector |
CONNECTIONS |
|||
| Purpose | Location |
Purpose | Location |
| AT power connector | AT |
System fan power | JP8 |
| ATX power connector | ATX |
CPU fan power | JP10 |
| Serial interface 1 | COM1 |
Power LED & keylock | JP11/Pins 1 - 5 |
| Serial interface 2 | COM2 |
Turbo switch | JP11/Pins 6 - 8 |
| Floppy drive interface | FDD |
Speaker | JP11/Pins 9 - 12 |
| IDE interface 1 | IDE1 |
Reset switch | JP11/Pins 13 & 14 |
| IDE interface 2 | IDE2 |
Turbo LED | JP11/Pins 15 & 16 |
| IR connector | IR |
IDE interface LED | J12/pins 1 & 3 |
| 16-bit ISA slots | IS1 – IS2 |
Green PC connector | J12/pins 2 & 4 |
| VGA interface | J4 |
Soft off power supply | JP13/ Pins 2 & 4 |
| PS/2 mouse interface | J10 |
AT keyboard port | KB |
| Audio in – CD-ROM (Sony) | JP2 |
Parallel port | LPT |
| Audio in – CD-ROM (Panasonic) | JP3 |
32-bit PCI slots | PC1 – PC3 |
| Audio connector | JP6 |
USB interface | USB |
| Game interface | JP7 |
Wake on LAN connector | WOL |
USER CONFIGURABLE SETTINGS |
|||
Function |
Label |
Position |
|
| » | On board sound enabled | J5 |
Open |
| On board sound disabled | J5 |
Closed |
|
| » | Power on keyboard enabled | JP1 |
Pins 1 & 2 closed |
| Power on keyboard disabled | JP1 |
Pins 2 & 3 closed |
|
» |
CMOS memory normal operation | JP4 |
Pins 2 & 3 closed |
| CMOS memory clear | JP4 |
Pins 1 & 2 closed |
|
| » | Audio chip disabled | JP5 |
Closed |
| Audio chip enabled | JP5 |
Open |
|
| » | Factory configured - do not alter | JP13/Pins 1 & 3 | Unidentified |
DIMM CONFIGURATION |
|||
Size |
Bank 0 |
Bank 1 |
Bank 2 |
16MB |
(1) 2M x 64 |
None |
None |
32MB |
(1) 4M x 64 |
None |
None |
32MB |
(1) 2M x 64 |
(1) 2M x 64 |
None |
48MB |
(1) 4M x 64 |
(1) 2M x 64 |
None |
48MB |
(1) 2M x 64 |
(1) 2M x 64 |
(1) 2M 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 |
80MB |
(1) 8M x 64 |
(1) 2M x 64 |
None |
80MB |
(1) 4M x 64 |
(1) 4M x 64 |
(1) 2M x 64 |
96MB |
(1) 8M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
96MB |
(1) 8M x 64 |
(1) 4M x 64 |
None |
96MB |
(1) 4M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
112MB |
(1) 8M x 64 |
(1) 4M x 64 |
(1) 2M 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 |
144MB |
(1) 16M x 64 |
(1) 2M x 64 |
None |
144MB |
(1) 8M x 64 |
(1) 8M x 64 |
(1) 2M 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 |
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 |
208MB |
(1) 16M x 64 |
(1) 8M x 64 |
(1) 2M x 64 |
256MB |
(1) 32M x 64 |
None |
None |
256MB |
(1) 16M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
264MB |
(1) 32M x 64 |
(1) 1M x 64 |
None |
272MB |
(1) 32M x 64 |
(1) 2M x 64 |
None |
288MB |
(1) 32M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
288MB |
(1) 32M x 64 |
(1) 4M x 64 |
None |
320MB |
(1) 32M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
320MB |
(1) 32M x 64 |
(1) 8M x 64 |
None |
384MB |
(1) 32M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
384MB |
(1) 32M x 64 |
(1) 16M x 64 |
None |
384MB |
(1) 16M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
512MB |
(1) 64M x 64 |
None |
None |
512MB |
(1) 32M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
512MB |
(1) 32M x 64 |
(1) 32M x 64 |
None |
528MB |
(1) 64M x 64 |
(1) 2M x 64 |
None |
544MB |
(1) 64M x 64 |
(1) 2M x 64 |
(1) 2M x 64 |
544MB |
(1) 64M x 64 |
(1) 4M x 64 |
None |
560MB |
(1) 64M x 64 |
(1) 4M x 64 |
(1) 2M x 64 |
576MB |
(1) 64M x 64 |
(1) 4M x 64 |
(1) 4M x 64 |
576MB |
(1) 64M x 64 |
(1) 8M x 64 |
None |
592MB |
(1) 64M x 64 |
(1) 8M x 64 |
(1) 2M x 64 |
608MB |
(1) 64M x 64 |
(1) 8M x 64 |
(1) 4M x 64 |
640MB |
(1) 64M x 64 |
(1) 8M x 64 |
(1) 8M x 64 |
640MB |
(1) 64M x 64 |
(1) 16M x 64 |
None |
656MB |
(1) 64M x 64 |
(1) 16M x 64 |
(1) 2M x 64 |
672MB |
(1) 64M x 64 |
(1) 16M x 64 |
(1) 4M x 64 |
704MB |
(1) 64M x 64 |
(1) 16M x 64 |
(1) 8M x 64 |
768MB |
(1) 64M x 64 |
(1) 16M x 64 |
(1) 16M x 64 |
768MB |
(1) 64M x 64 |
(1) 32M x 64 |
None |
768MB |
(1) 32M x 64 |
(1) 32M x 64 |
(1) 32M x 64 |
784MB |
(1) 64M x 64 |
(1) 32M x 64 |
(1) 2M x 64 |
800MB |
(1) 64M x 64 |
(1) 32M x 64 |
(1) 4M x 64 |
832MB |
(1) 64M x 64 |
(1) 32M x 64 |
(1) 8M x 64 |
896MB |
(1) 64M x 64 |
(1) 32M x 64 |
(1) 16M x 64 |
1024MB |
(1) 64M x 64 |
(1) 64M x 64 |
None |
1024MB |
(1) 64M x 64 |
(1) 32M x 64 |
(1) 32M x 64 |
1040MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 2M x 64 |
1056MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 4M x 64 |
1088MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 8M x 64 |
1152MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 16M x 64 |
1280MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 32M x 64 |
1536MB |
(1) 64M x 64 |
(1) 64M x 64 |
(1) 64M x 64 |
| Note: Board accepts SDRAM memory. Bank 0 must always be installed due to the VGA shared memory function. | |||
CACHE CONFIGURATION |
| Note: 0/128KB cache is located on the Celeron CPU. |