J-MARK COMPUTER CORPORATION
J-591A
|
Device Type |
Mainboard |
|
Processor |
CX 6X86/IBM 6X86/CX 686MX/IDT C6/AM K5/AM K6/Pentium/Pentium MMX |
|
Processor Speed |
90/100/120/133/150/166/180/200/233/266/300MHz |
|
Chip Set |
SIS 5591 |
|
Maximum Onboard Memory |
256MB (EDO & SDRAM supported) |
|
Cache |
512KB |
|
BIOS |
Unidentified |
|
Dimensions |
235mm x 220mm |
|
I/O Options |
32-bit PCI slots (3), floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse interface, serial ports (2), IR connector, USB connector, ATX power connector, AGP slot |
|
CONNECTIONS | |||
|
Purpose |
Location |
Purpose |
Location |
|
AGP slot |
AGP |
Serial port 2 |
CN1 |
|
ATX power connector |
ATX |
Serial port 1 |
CN2 |
|
Turbo LED |
C1 |
IDE interface 2 |
CN3 |
|
Reset switch |
C2 |
IDE interface 1 |
CN4 |
|
Speaker |
C3 |
Floppy drive interface |
CN5 |
|
Turbo switch |
C4 |
Parallel port |
CN6 |
|
Power LED & keylock |
C5 |
IR connector |
IR1 |
|
IDE interface LED |
C6 |
PS/2 mouse interface |
JP1 |
|
Soft off power supply |
C7 |
32-bit PCI slots |
PC1 PC3 |
|
Chassis fan power |
C8 |
USB connector |
USB |
|
CPU fan power |
C9 |
SCSI interface | |
|
USER CONFIGURABLE SETTINGS | |||
|
Function |
Label |
Position | |
|
|
Keyboard power on disabled |
JP2 |
Pins 2 & 3 closed |
|
Keyboard power on enabled |
JP2 |
Pins 1 & 2 closed | |
|
|
CMOS memory normal operation |
JP4 |
Pins 1 & 2 closed |
|
CMOS memory clear |
JP4 |
Pins 2 & 3 closed | |
|
|
Factory configured - do not alter |
JP8 |
Unidentified |
|
|
Factory configured - do not alter |
JP9 |
Unidentified |
|
SIMM CONFIGURATION | |
|
Size |
Bank 0 |
|
8MB |
(2) 1M x 36 |
|
16MB |
(2) 2M x 36 |
|
32MB |
(2) 4M x 36 |
|
64MB |
(2) 8M x 36 |
|
128MB |
(2) 16M x 36 |
|
256MB |
(2) 32M x 36 |
|
Note: Board accepts EDO memory. | |
|
DIMM CONFIGURATION | ||
|
Size |
Bank 1 |
Bank 2 |
|
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 8 |
|
CPU SPEED SELECTION (CX 6X86) | ||||||||
|
CPU speed |
Clock speed |
Multiplier |
U4/1 |
U4/2 |
U4/3 |
U4/4 |
U4/5 |
U4/6 |
|
150MHz |
60MHz |
2x |
On |
Off |
Off |
On |
On |
On |
|
166MHz |
66MHz |
2x |
On |
Off |
Off |
Off |
On |
On |
|
200MHz |
75MHz |
2x |
On |
Off |
Off |
On |
On |
Off |
|
CPU SPEED SELECTION (IBM 6X86) | ||||||||
|
CPU speed |
Clock speed |
Multiplier |
U4/1 |
U4/2 |
U4/3 |
U4/4 |
U4/5 |
U4/6 |
|
150MHz |
60MHz |
2x |
On |
Off |
Off |
On |
On |
On |
|
166MHz |
66MHz |
2x |
On |
Off |
Off |
Off |
On |
On |
|
200MHz |
75MHz |
2x |
On |
Off |
Off |
On |
On |
Off |
|
CPU SPEED SELECTION (CX 6X86MX) | ||||||||
|
CPU speed |
Clock speed |
Multiplier |
U4/1 |
U4/2 |
U4/3 |
U4/4 |
U4/5 |
U4/6 |
|
166MHz |
60MHz |
2.5x |
On |
On |
Off |
Off |
On |
On |
|
200MHz |
66MHz |
2.5x |
On |
On |
Off |
Off |
On |
On |
|
200MHz |
75MHz |
2x |
On |
Off |
Off |
Off |
On |
Off |
|
233MHz |
66MHz |
3x |
Off |
On |
Off |
On |
On |
On |
|
233MHz |
75MHz |
2.5x |
On |
On |
Off |
On |
On |
Off |
|
CPU SPEED SELECTION (IDT C6) | ||||||||
|
CPU speed |
Clock speed |
Multiplier |
U4/1 |
U4/2 |
U4/3 |
U4/4 |
U4/5 |
U4/6 |
|
150MHz |
75MHz |
2x |
On |
Off |
Off |
On |
On |
Off |
|
180MHz |
60MHz |
3x |
Off |
On |
Off |
On |
On |
On |
|
CPU SPEED SELECTION (AM K5) | ||||||||
|
CPU speed |
Clock speed |
Multiplier |
U4/1 |
U4/2 |
U4/3 |
U4/4 |
U4/5 |
U4/6 |
|
90MHz |
60MHz |
1.5x |
Off |
Off |
Off |
On |
On |
On |
|
100MHz |
66MHz |
1.5x |
Off |
Off |
Off |
Off |
On |
On |
|
133MHz |
66MHz |
1.5x |
Off |
Off |
Off |
Off |
On |
On |
|
166MHz |
66MHz |
2.5x |
On |
On |
Off |
Off |
On |
On |
|
CPU SPEED SELECTION (AM K6) | ||||||||
|
CPU speed |
Clock speed |
Multiplier |
U4/1 |
U4/2 |
U4/3 |
U4/4 |
U4/5 |
U4/6 |
|
166MHz |
66MHz |
2.5x |
On |
On |
Off |
Off |
On |
On |
|
200MHz |
66MHz |
3x |
Off |
On |
Off |
Off |
On |
On |
|
233MHz |
66MHz |
3.5x |
Off |
Off |
Off |
Off |
On |
On |
|
266MHz |
66MHz |
4x |
On |
Off |
On |
Off |
On |
On |
|
300MHz |
66MHz |
4.5x |
On |
On |
On |
Off |
On |
Off |
|
CPU SPEED SELECTION (INTEL) | ||||||||
|
CPU speed |
Clock speed |
Multiplier |
U4/1 |
U4/2 |
U4/3 |
U4/4 |
U4/5 |
U4/6 |
|
90MHz |
60MHz |
1.5x |
Off |
Off |
Off |
On |
On |
On |
|
100MHz |
66MHz |
1.5x |
Off |
Off |
Off |
Off |
On |
On |
|
120MHz |
60MHz |
2x |
On |
Off |
Off |
On |
On |
On |
|
133MHz |
66MHz |
2x |
On |
Off |
Off |
Off |
On |
On |
|
150MHz |
60MHz |
2.5x |
On |
On |
Off |
On |
On |
On |
|
166MHz |
66MHz |
2.5x |
On |
On |
Off |
Off |
On |
On |
|
200MHz |
66MHz |
3x |
Off |
On |
Off |
Off |
On |
On |
|
CPU SPEED SELECTION (INTEL MMX) | ||||||||
|
CPU speed |
Clock speed |
Multiplier |
U4/1 |
U4/2 |
U4/3 |
U4/4 |
U4/5 |
U4/6 |
|
166MHz |
66MHz |
2.5x |
On |
On |
Off |
Off |
On |
On |
|
200MHz |
66MHz |
3x |
Off |
On |
Off |
Off |
On |
On |
|
233MHz |
66MHz |
3.5x |
Off |
Off |
Off |
Off |
On |
On |
|
CPU VOLTAGE SELECTION | |
|
Voltage |
JP10 |
|
2.2v |
Pins 1 & 2 closed |
|
2.8v |
Pins 3 & 4 closed |
|
2.9v |
Pins 5 & 6 closed |
|
3.2v |
Pins 7 & 8 closed |
|
3.3v |
Pins 9 & 10 closed |
|
3.45v |
Pins 11 & 12 closed |
|
3.52v |
Pins 13 & 14 closed |