V-386 Motherboard Settings and Configuration

Processor	80386SX
Processor Speed	20/25MHz
Chip Set	Unidentified
Max. Onboard DRAM	8MB
Cache	None
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interface, parallel port, serial ports (2)
NPU Options	80387SX

CONNECTIONS
Purpose	Location	Purpose	Location
Parallel port	J13	IDE interface LED	J23
Serial port 1	J14	Turbo switch	J24
Serial port 2	J15	Reset switch	J25
Floppy drive interface	J20	Speaker	J26
IDE interface	J21	Power LED & keylock	J27
Turbo LED	J22

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Parallel port enabled	W1	pins 2 & 3 closed
	Parallel port disabled	W1	pins 1 & 2 closed
»	Serial port 2 enabled	W2	pins 2 & 3 closed
	Serial port 2 disabled	W2	pins 1 & 2 closed
»	Serial port 1 enabled	W3	pins 2 & 3 closed
	Serial port 1 disabled	W3	pins 1 & 2 closed
»	Parallel port LPT select LPT1	W4	pins 1 & 2 closed
	Parallel port LPT select LPT2	W4	pins 2 & 3 closed
»	Parallel port IRQ select IRQ7	W5	pins 1 & 2 closed
	Parallel port IRQ select IRQ5	W5	pins 2 & 3 closed
»	IDE interface enabled	W6	pins 1 & 2 closed
	IDE interface disabled	W6	pins 2 & 3 closed
»	Floppy drive interface enabled	W7	pins 1 & 2 closed
	Floppy drive interface disabled	W7	pins 2 & 3 closed
»	Memory page size select 2KB	W16	pins 2 & 3 closed
	Memory page size select 4KB	W16	pins 1 & 2 closed
»	Monitor type select color	W17	pins 1 & 2 closed
	Monitor type select monochrome	W17	pins 2 & 3 closed
»	NPU disabled	W18	pins 1 & 2 closed
	NPU enabled	W18	pins 2 & 3 closed
»	I/O wait state select 6 wait states	W19	pins 1 & 2 closed
	I/O wait state select 4 wait states	W19	pins 2 & 3 closed
Note: The location of W16 is unidentified.

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

DRAM JUMPER CONFIGURATION
Size	W8	W9	W12	W14	W15
1MB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
2MB	2 & 3	2 & 3	1 & 2	2 & 3	2 & 3
4MB	1 & 2	2 & 3	2 & 3	1 & 2	1 & 2
8MB	1 & 2	1 & 2	1 & 2	1 & 2	1 & 2
Note: Pins designated should be in the closed position.