Processor	80386SX
Processor Speed	16/20MHz
Chip Set	VLSI
Max. Onboard DRAM	8MB
Cache	64KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interface, parallel port, serial ports (2), VGA port
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
VGA port	J1	Serial port 2	J10
Turbo LED	J3	Parallel port LPT1	J15
Power LED & keylock	J4	Floppy drive interface	J16
Speaker	J5	IDE interface	J17
Reset switch	J6	Riser card	R1
IDE interface LED	J8	Turbo switch	W6
Serial port 1	J9

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Factory configured - do not alter	SW1/1 & 2	Open
»	Factory configured - do not alter	SW2/3 & 4	Open
»	Factory configured - do not alter	SW21 & 2	N/A
»	Floppy drive interface interrupt (IRQ6) enabled	SW2/pins 11 & 12	Open
	Floppy drive interface interrupt (IRQ6) disabled	SW2/pins 11 & 12	Closed
»	Floppy drive interface DMARQ2 enabled	SW2/pins 13 & 14	Open
	Floppy drive interface DMARQ2 disabled	SW2/pins 13 & 14	Closed
»	Floppy drive interface DACK2 enabled	SW2/pins 15 & 16	Open
	Floppy drive interface DACK2 disabled	SW2/pins 15 & 16	Closed
»	Floppy drive interface enabled	SW3/pins 1 & 2	Open
	Floppy drive interface disabled	SW3/pins 1 & 2	Closed
»	Factory configured - do not alter	SW3/pins 5 & 6	Open
»	Factory configured - do not alter	W1	Closed
»	Cache enabled	W2	Closed
	Cache disabled	W2	Open
»	Memory (8-bit) speed select 4 wait states	W3	pins 2 & 3 closed
	Memory (8-bit) speed select 6 wait states	W3	pins 1 & 2 closed
»	Memory (16-bit) speed select 1 wait states	W4	pins 2 & 3 closed
	Memory (16-bit) speed select 2 wait states	W4	pins 1 & 2 closed
»	BIOS type select 27256	W5	pins 2 & 3 closed
	BIOS type select 27512	W5	pins 1 & 2 closed
	Monitor type select monochrome	W7	pins 1 & 2 closed
	Monitor type select color	W7	pins 2 & 3 closed
»	Parallel port (J2) mode select output only	W11	pins 2 & 3 closed
	Parallel port (J2) mode select bi-directional	W11	pins 1 & 2 closed
»	Floppy drive write precomp select standard	W17	pins 2 & 3 closed
	Floppy drive write precomp select two speed drive	W17	pins 1 & 2 closed
»	Floppy drive type select standard	W18	pins 1 & 2 closed
	Floppy drive type select two speed drive	W18	pins 2 & 3 closed
»	IDE interface enabled	W20	Open
	IDE interface disabled	W20	Closed
»	IDE interface interrupt (IRQ4) enabled	W21	Open
	IDE interface interrupt disabled	W21	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3	Socket U71	Socket U76
512KB	(2) 256K x 9	NONE	NONE	NONE	PAL B	PAL B
1MB	(2) 256K x 9	(2) 256K x 9	NONE	NONE	PAL B	PAL B
2MB	(2) 1M x 9	NONE	NONE	NONE	PAL A	PAL A
3MB	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9	NONE	PAL B	PAL B
4MB	(2) 1M x 9	(2) 1M x 9	NONE	NONE	PAL A	PAL A
5MB	(2) 256K x 9	(2) 256K x 9	(2) 1M x 9	(2) 1M x 9	PAL B	PAL B
6MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	NONE	PAL A	PAL A
8MB	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	(2) 1M x 9	PAL A	PAL A

DRAM JUMPER/SWITCH CONFIGURATION
Size	SW1/5 & 6	SW1/7 & 8	SW1/9 & 10	W8	W9
512KB	Open	Open	Open	pins 1 & 2 closed	pins 2 & 3 closed
1MB	Open	Closed	Open	pins 1 & 2 closed	pins 2 & 3 closed
2MB	Closed	Open	Open	pins 1 & 2 closed	pins 1 & 2 closed
3MB	Closed	Open	Open	pins 1 & 2 closed	pins 2 & 3 closed
4MB	Open	Open	Open	pins 1 & 2 closed	pins 1 & 2 closed
5MB	Open	Closed	Open	pins 1 & 2 closed	pins 2 & 3 closed
6MB	Closed	Open	Open	pins 1 & 2 closed	pins 1 & 2 closed
8MB	Closed	Open	Open	pins 1 & 2 closed	pins 1 & 2 closed
Note:DRAM jumper configurations correlate directly to memory configurations.

CACHE CONFIGURATION
Size	Bank 0	TAG
64KB	(2) 64K x 4	(1) 8K x 8
Note:Arrangement of Cache/TAG unverified.

PARALLEL PORT CONFIGURATION
LPT#	Interrupt	Address	SW2/7 & 8	SW2/9 & 10	SW3/9 & 10	SW3/11 & 12
LPT1	IRQ7	378h	Open	Closed	Open	Open
LPT1	IRQ7	3BCh	Open	Closed	Open	Closed
LPT2	IRQ5	278h	Closed	Open	Closed	Open
Disabled	N/A	N/A	Open	Open	Closed	Closed

SERIAL PORT 1 CONFIGURATION
Setting	SW2/3 & 4	SW3/3 & 4
COM2/IRQ3	Closed	Open
Disabled	Open	Closed

SERIAL PORT 2 CONFIGURATION
Setting	SW2/5 &6	SW3/7 & 8
COM1/IRQ4	Closed	Open
Disabled	Open	Closed

ON BOARD VIDEO CONFIGURATION
Size	SW5
Enabled	pins 1 & 2, 3 & 4, 5 & 6 closed & pins 7 & 8 open
Disabled	pins 1 & 2, 3 & 4, 5 & 6 open & pins 7 & 8 closed