6500SX Motherboard Settings and Configuration

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6500SX

Processor
80386SX (exact location unknown)
Processor Speed
16/20/25MHz
Chip Set
SIS
Max. Onboard DRAM
4MB
Cache
None
BIOS
AMI
Dimensions
254mm x 220mm
I/O Options
Floppy drive interface, IDE interface, Game port, parallel port, serial ports (2)
NPU Options
80387SX

CONNECTIONS
Purpose
Location
Purpose
Location
Parallel port
CN1
IDE interface
J10
Joystick port
CN2
Floppy drive interface
J12
Serial port 2
CN3
Speaker
J15
Serial port 1
CN4
IDE interface LED
J32
Front panel connector
J4
Riser Card
S1
External battery
J9

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
Joystick port enabled
J17
Closed

Joystick port disabled
J17
Open
»
Floppy drive interface enabled
J28
Open

Floppy drive interface disabled
J28
Closed
»
IDE interface enabled
J29
Closed

IDE interface disabled
J29
Open
»
Parity enabled
J33
Closed

Parity disabled
J33
Open
»
NPU disabled
J40
pins 1 & 2 closed

NPU enabled
J40
pins 2 & 3 closed
»
Factory configured - do not alter
SW2/5
Off
»
Factory configured - do not alter
SW2/6
On
»
Factory configured - do not alter
SW2/7
Off

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
1MB
(8) 44256
NONE
NONE
1.5MB
(8) 44256
(2) 256K x 9
NONE
2MB
(8) 44256
(2) 256K x 9
(2) 256K x 9
2MB
NONE
(2) 1M x 9
NONE
4MB
NONE
(2) 1M x 9
(2) 1M x 9

DRAM SWITCH CONFIGURATION
Size
SW2/1
SW2/2
SW2/3
SW2/4
SW2/8
SW2/9
SW2/10
1MB
On
On
On
On
On
On
Off
1.5MB
On
On
On
On
On
Off
On
2MB
On
On
On
On
On
Off
Off
2MB
On
Off
Off
On
On
On
On
4MB
On
Off
Off
Off
On
On
Off

SERIAL PORT CONFIGURATION
Port 1 (CN4)
Port 2 (CN2)
J20
J22
J25
J26
»
COM1
COM2
2 & 3
1 & 2
Open
Open

COM1
COM3
2 & 3
Open
1 & 2
Open

COM1
COM4
2 & 3
Open
Open
1 & 2

COM2
COM1
1 & 2
2 & 3
Open
Open

COM2
COM3
Open
2 & 3
1 & 2
Open

COM2
COM4
Open
2 & 3
Open
1 & 2

COM3
COM1
1 & 2
Open
2 & 3
Open

COM3
COM2
Open
1 & 2
2 & 3
Open

COM3
COM4
Open
Open
2 & 3
1 & 2

COM4
COM1
2 & 3
Open
Open
1 & 2

COM4
COM2
Open
1 & 2
Open
2 & 3

COM4
COM3
Open
Open
1 & 2
2 & 3
Note:Pins designated should be in the closed position.

SERIAL PORT IRQ CONFIGURATION
Port 1 (CN1)
Port 2 (CN2)
J18
J19
»
IRQ4
IRQ3
pins 2 & 3 closed
pins 1 & 2 closed

IRQ3
IRQ4
pins 1 & 2 closed
pins 2 & 3 closed

PARALLEL PORT CONFIGURATION
LPT
IRQ
J16
J21
»
1
7
pins 2 & 3 closed
pins 2 & 3 closed

1
5
pins 2 & 3 closed
pins 1 & 2 closed

2
7
pins 1 & 2 closed
pins 2 & 3 closed

2
5
pins 1 & 2 closed
pins 1 & 2 closed

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6500SX Motherboard Settings and Configuration

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Processor	80386SX (exact location unknown)
Processor Speed	16/20/25MHz
Chip Set	SIS
Max. Onboard DRAM	4MB
Cache	None
BIOS	AMI
Dimensions	254mm x 220mm
I/O Options	Floppy drive interface, IDE interface, Game port, parallel port, serial ports (2)
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
Parallel port	CN1	IDE interface	J10
Joystick port	CN2	Floppy drive interface	J12
Serial port 2	CN3	Speaker	J15
Serial port 1	CN4	IDE interface LED	J32
Front panel connector	J4	Riser Card	S1
External battery	J9

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Joystick port enabled	J17	Closed
	Joystick port disabled	J17	Open
»	Floppy drive interface enabled	J28	Open
	Floppy drive interface disabled	J28	Closed
»	IDE interface enabled	J29	Closed
	IDE interface disabled	J29	Open
»	Parity enabled	J33	Closed
	Parity disabled	J33	Open
»	NPU disabled	J40	pins 1 & 2 closed
	NPU enabled	J40	pins 2 & 3 closed
»	Factory configured - do not alter	SW2/5	Off
»	Factory configured - do not alter	SW2/6	On
»	Factory configured - do not alter	SW2/7	Off

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
1MB	(8) 44256	NONE	NONE
1.5MB	(8) 44256	(2) 256K x 9	NONE
2MB	(8) 44256	(2) 256K x 9	(2) 256K x 9
2MB	NONE	(2) 1M x 9	NONE
4MB	NONE	(2) 1M x 9	(2) 1M x 9

DRAM SWITCH CONFIGURATION
Size	SW2/1	SW2/2	SW2/3	SW2/4	SW2/8	SW2/9	SW2/10
1MB	On	On	On	On	On	On	Off
1.5MB	On	On	On	On	On	Off	On
2MB	On	On	On	On	On	Off	Off
2MB	On	Off	Off	On	On	On	On
4MB	On	Off	Off	Off	On	On	Off

SERIAL PORT CONFIGURATION
Port 1 (CN4)		Port 2 (CN2)	J20	J22	J25	J26
»	COM1	COM2	2 & 3	1 & 2	Open	Open
	COM1	COM3	2 & 3	Open	1 & 2	Open
	COM1	COM4	2 & 3	Open	Open	1 & 2
	COM2	COM1	1 & 2	2 & 3	Open	Open
	COM2	COM3	Open	2 & 3	1 & 2	Open
	COM2	COM4	Open	2 & 3	Open	1 & 2
	COM3	COM1	1 & 2	Open	2 & 3	Open
	COM3	COM2	Open	1 & 2	2 & 3	Open
	COM3	COM4	Open	Open	2 & 3	1 & 2
	COM4	COM1	2 & 3	Open	Open	1 & 2
	COM4	COM2	Open	1 & 2	Open	2 & 3
	COM4	COM3	Open	Open	1 & 2	2 & 3
Note:Pins designated should be in the closed position.

SERIAL PORT IRQ CONFIGURATION
Port 1 (CN1)		Port 2 (CN2)	J18	J19
»	IRQ4	IRQ3	pins 2 & 3 closed	pins 1 & 2 closed
	IRQ3	IRQ4	pins 1 & 2 closed	pins 2 & 3 closed

PARALLEL PORT CONFIGURATION
LPT		IRQ	J16	J21
»	1	7	pins 2 & 3 closed	pins 2 & 3 closed
	1	5	pins 2 & 3 closed	pins 1 & 2 closed
	2	7	pins 1 & 2 closed	pins 2 & 3 closed
	2	5	pins 1 & 2 closed	pins 1 & 2 closed