386DX-25/33 SYSTEM Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	25/33MHz
Chip Set	Unidentified
Video Chip Set	Trident
Maximum Onboard Memory	32MB
Maximum Video Memory	1MB
Cache	None
BIOS	Phoenix
Dimensions	378mm x 310mm
I/O Options	Floppy drive interface, game port, IDE interface, parallel port, serial ports (2), VGA port, riser slot, modem connector
NPU Options	80387DX/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Game port	CN1	IDE interface	J24
VGA port	CN2	IDE interface LED	J25
Parallel port	CN3	Floppy drive interface LED	J26
Serial port 2	CN4	Power LED	J27
Serial port 1	CN5	Floppy drive interface	J28
Chassis fan power	J4	Reset switch	J29
External battery	J10	Riser slot	SL1
Modem connector	J23

USER CONFIGURABLE SETTINGS
Function		Label	Position
	HDC enabled	J2	Pins 2 & 3 closed
	HDC disabled	J2	Pins 1 & 2 closed
	Game port enabled	J3	Pins 1 & 2 closed
	Game port disabled	J3	Pins 2 & 3 closed
	Monitor type select color	J5	Closed
	Monitor type select monochrome	J5	Open
	Serial port 2 enabled	J6	Pins 1 & 2 closed
	Serial port 2 disabled	J6	Pins 2 & 3 closed
	Parallel port enabled	J7	Pins 1 & 2 closed
	Parallel port disabled	J7	Pins 2 & 3 closed
	Serial port 2 COM select COM2	J8	Pins 1 & 2 closed
	Serial port 2 COM select COM4	J8	Pins 2 & 3 closed
	Parallel port LPT select LPT1	J9	Pins 1 & 2 closed
	Parallel port LPT select LPT2	J9	Pins 2 & 3 closed
	Serial port 1 enabled	J11	Pins 1 & 2 closed
	Serial port 1 disabled	J11	Pins 2 & 3 closed
	Serial port 1 COM select COM1	J12	Pins 1 & 2 closed
	Serial port 1 COM select COM3	J12	Pins 2 & 3 closed
»	Monitor type select standard	J16	Pins 1 & 2 closed
	Monitor type select non standard monochrome	J16	Pins 2 & 3 closed
	Monitor type select non standard color	J16	Open
	Video mode select interlaced	J19	Closed
	Video mode select non interlaced	J19	Open
	IDE interface enabled	J21	Pins 1 & 2 closed
	IDE interface disabled	J21	Pins 2 & 3 closed
	Floppy drive interface enabled	J22	Pins 1 & 2 closed
	Floppy drive interface disabled	J22	Pins 2 & 3 closed

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
5MB	(4) 1M x 9	(4) 256K x 9
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	None
17MB	(4) 4M x 9	(4) 256K x 9
20MB	(4) 4M x 9	(4) 1M x 9
32MB	(4) 4M x 9	(4) 4M x 9
Note: Banks are interchangeable.

VIDEO MEMORY CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
256KB	(2) 44256	None	None	None
512KB	(2) 44256	(2) 44256	None	None
1MB	(2) 44256	(2) 44256	(2) 44256	(2) 44256