R386SX MBC Motherboard Settings and Configuration

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R386SX MBC

Processor
80386SX
Processor Speed
16/25MHz
Chip Set
C & T
Max. Onboard DRAM
16MB
Cache
None
BIOS
AMI
Dimensions
220mm x 218mm
I/O Options
Floppy drive interface, IDE interface
NPU Options
80387SX

CONNECTIONS
Purpose
Location
Purpose
Location
External battery
J7
Turbo LED
J11
Power LED & keylock
J8
Speaker
J12
Reset switch
J9
Floppy drive interface
P3
Turbo switch
J10
IDE interface
P4

USER CONFIGURABLE SETTINGS
Function
Jumper
Position
»
Floppy drive interface enabled
J2
Closed

Floppy drive interface disabled
J2
Open
»
IDE interface enabled
J3
Closed

IDE interface disabled
J3
Open
»
Factory configured - do not alter
J4
Open
»
Monitor type select CGA/EGA/VGA
J5
pins 1 & 2 closed

Monitor type select monochrome
J5
pins 2 & 3 closed
»
Battery type select internal
J6
Closed

Battery type select external
J6
Open

DRAM CONFIGURATION (DIPP & SIMM RAM)
Size
Bank 0
Bank 1
Parity Chip
Bank 2
Bank 3
512KB
(2) 44256
(2) 44256
(2) 41256
NONE
NONE
1MB
(4) 44256
(4) 44256
(4) 41256
NONE
NONE
1.5MB
(4) 44256
(4) 44256
(4) 41256
(2) 256K x 9
NONE
2MB
(4) 44256
(4) 44256
(4) 41256
(2) 256K x 9
(2) 256K x 9
2MB
NONE
NONE
NONE
(2) 1M x 9
NONE
3MB
(4) 44256
(4) 44256
(4) 41256
(2) 1M x 9
(2) 256K x 9
4MB
NONE
NONE
NONE
(2) 1M x 9
(2) 1M x 9
5MB
(4) 44256
(4) 44256
(4) 41256
(2) 1M x 9
(2) 1M x 9
9MB
(4) 44256
(4) 44256
(4) 41256
(2) 4M x 9
NONE
16MB
NONE
NONE
NONE
(2) 4M x 9
(2) 4M x 9
Note: When installing 512KB, only U32, U33, U37, U38,U41 & U42 are used.

DRAM JUMPER CONFIGURATION
Bank 0
Bank 1
Parity Chip
Bank 2
Bank 3
J13, J14 & J15
(2) 44256
(2) 44256
(2) 41256
NONE
NONE
1 & 2, 3 & 4, 5 & 6, 7 & 8
(4) 44256
(4) 44256
(4) 41256
NONE
NONE
1 & 2, 3 & 4, 5 & 6, 7 & 8
(4) 44256
(4) 44256
(4) 41256
(2) 256K x 9
NONE
1 & 2, 3 & 4, 5 & 6, 7 & 8
(4) 44256
(4) 44256
(4) 41256
(2) 256K x 9
(2) 256K x 9
1 & 2, 3 & 4, 5 & 6, 7 & 8
NONE
NONE
NONE
(2) 1M x 9
NONE
1 & 3, 2 & 4, 5 & 7, 6 & 8
(4) 44256
(4) 44256
(4) 41256
(2) 1M x 9
(2) 256K x 9
1 & 2, 3 & 4, 5 & 6, 7 & 8
NONE
NONE
NONE
(2) 1M x 9
(2) 1M x 9
1 & 3, 2 & 4, 5 & 7, 6 & 8
(4) 44256
(4) 44256
(4) 41256
(2) 1M x 9
(2) 1M x 9
1 & 2, 3 & 4, 5 & 6, 7 & 8
(4) 44256
(4) 44256
(4) 41256
(2) 4M x 9
NONE
1 & 2, 3 & 4, 5 & 6, 7 & 8
NONE
NONE
NONE
(2) 4M x 9
(2) 4M x 9
1 & 3, 2 & 4, 5 & 7, 6 & 8
Note:Pins designated should be in the closed position.

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R386SX MBC Motherboard Settings and Configuration

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Processor	80386SX
Processor Speed	16/25MHz
Chip Set	C & T
Max. Onboard DRAM	16MB
Cache	None
BIOS	AMI
Dimensions	220mm x 218mm
I/O Options	Floppy drive interface, IDE interface
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
External battery	J7	Turbo LED	J11
Power LED & keylock	J8	Speaker	J12
Reset switch	J9	Floppy drive interface	P3
Turbo switch	J10	IDE interface	P4

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Floppy drive interface enabled	J2	Closed
	Floppy drive interface disabled	J2	Open
»	IDE interface enabled	J3	Closed
	IDE interface disabled	J3	Open
»	Factory configured - do not alter	J4	Open
»	Monitor type select CGA/EGA/VGA	J5	pins 1 & 2 closed
	Monitor type select monochrome	J5	pins 2 & 3 closed
»	Battery type select internal	J6	Closed
	Battery type select external	J6	Open

DRAM CONFIGURATION (DIPP & SIMM RAM)
Size	Bank 0	Bank 1	Parity Chip	Bank 2	Bank 3
512KB	(2) 44256	(2) 44256	(2) 41256	NONE	NONE
1MB	(4) 44256	(4) 44256	(4) 41256	NONE	NONE
1.5MB	(4) 44256	(4) 44256	(4) 41256	(2) 256K x 9	NONE
2MB	(4) 44256	(4) 44256	(4) 41256	(2) 256K x 9	(2) 256K x 9
2MB	NONE	NONE	NONE	(2) 1M x 9	NONE
3MB	(4) 44256	(4) 44256	(4) 41256	(2) 1M x 9	(2) 256K x 9
4MB	NONE	NONE	NONE	(2) 1M x 9	(2) 1M x 9
5MB	(4) 44256	(4) 44256	(4) 41256	(2) 1M x 9	(2) 1M x 9
9MB	(4) 44256	(4) 44256	(4) 41256	(2) 4M x 9	NONE
16MB	NONE	NONE	NONE	(2) 4M x 9	(2) 4M x 9
Note: When installing 512KB, only U32, U33, U37, U38,U41 & U42 are used.

DRAM JUMPER CONFIGURATION
Bank 0	Bank 1	Parity Chip	Bank 2	Bank 3	J13, J14 & J15
(2) 44256	(2) 44256	(2) 41256	NONE	NONE	1 & 2, 3 & 4, 5 & 6, 7 & 8
(4) 44256	(4) 44256	(4) 41256	NONE	NONE	1 & 2, 3 & 4, 5 & 6, 7 & 8
(4) 44256	(4) 44256	(4) 41256	(2) 256K x 9	NONE	1 & 2, 3 & 4, 5 & 6, 7 & 8
(4) 44256	(4) 44256	(4) 41256	(2) 256K x 9	(2) 256K x 9	1 & 2, 3 & 4, 5 & 6, 7 & 8
NONE	NONE	NONE	(2) 1M x 9	NONE	1 & 3, 2 & 4, 5 & 7, 6 & 8
(4) 44256	(4) 44256	(4) 41256	(2) 1M x 9	(2) 256K x 9	1 & 2, 3 & 4, 5 & 6, 7 & 8
NONE	NONE	NONE	(2) 1M x 9	(2) 1M x 9	1 & 3, 2 & 4, 5 & 7, 6 & 8
(4) 44256	(4) 44256	(4) 41256	(2) 1M x 9	(2) 1M x 9	1 & 2, 3 & 4, 5 & 6, 7 & 8
(4) 44256	(4) 44256	(4) 41256	(2) 4M x 9	NONE	1 & 2, 3 & 4, 5 & 6, 7 & 8
NONE	NONE	NONE	(2) 4M x 9	(2) 4M x 9	1 & 3, 2 & 4, 5 & 7, 6 & 8
Note:Pins designated should be in the closed position.