J-591A Motherboard Settings and Configuration

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

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J-591A Motherboard Settings and Configuration

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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