DECPC 400MT Motherboard Settings and Configuration

Processor	80486DX/80486DX2
Processor Speed	33/50(internal)/66(internal)MHz
Chip Set	Unidentified
Video Chip Set	Unidentified
Maximum Onboard Memory	64MB
Maximum Video Memory	1MB
Cache	None
BIOS	Unidentified
Dimensions	254mm x 218mm
I/O Options	CPU slot, parallel port, PS/2 mouse port, serial ports (2), VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Parallel port	CN1	PS/2 mouse port	CN5
VGA port	CN2	External battery	JP1
Serial port 2	CN3	CPU slot	SL1
Serial port 1	CN4

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	VGA IRQ9 disabled	J13	Open
	VGA IRQ9 enabled	J13	Closed
»	On board video enabled	J14	Closed
	On board video disabled	J14	Open
»	Local enabled	J23	Pins 1 & 2 closed
	Local & ISA enabled	J23	Pins 2 & 3 closed
»	Parallel port unidirectional	J25	Pins 1 & 2 closed
	Parallel port bidirectional	J25	Pins 2 & 3 closed
»	Reset switch enabled	J27	Pins 1 & 2 closed
	Reset switch disabled	J27	Pins 2 & 3 closed
»	Factory configured - do not alter	J28	Unidentified
	Monitor type select color	J29	Closed
	Monitor type select monochrome	J29	Open
»	CMOS memory normal operation	J31	Pins 1 & 2 closed
	CMOS memory clear	J31	Pins 2 & 3 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	None	None	None
8MB	(1) 1M x 36	(1) 1M x 36	None	None
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	None
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	None	None	None
20MB	(1) 1M x 36	(1) 4M x 36	None	None
24MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	None
32MB	(1) 4M x 36	(1) 4M x 36	None	None
40MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	None
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
Note: The location of banks 0, 1, 2 & 3 are unidentified.

VIDEO MEMORY CONFIGURATION
Size	Bank 0	Bank 1
512KB	512KB	None
1MB	512KB	512KB
Note: The location of banks 0 & 1 are unidentified.

VIDEO MEMORY JUMPER CONFIGURATION
Size	J22
512KB	Pins 1 & 2 closed
1MB	Pins 2 & 3 closed