PEM-2531D Motherboard Settings and Configuration

Processor	80386DX
Processor Speed	25MHz
Chip Set	DTK
Max. Onboard DRAM	16MB (8MB on external memory card)
Cache	None
BIOS	DTK
Dimensions	333mm x 222mm
I/O Options	32-bit external memory card slot (PEI-307)
NPU Options	80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
Power LED & keylock	J1	Turbo switch	J4
Speaker	J2	Reset switch	J5
Turbo LED	J3	32-bit external memory card	S1

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	CPU speed select fast	J4	Open
	CPU speed select slow	J4	pins 1 & 2 closed
	CPU speed select switchable from keyboard	J4	pins 2 & 3 closed
»	NPU disabled	W1	pins 2 & 3 closed
	NPU enabled	W1	pins 1 & 2 closed
»	Monitor type select monochrome	W2	pins 1 & 2 closed
	Monitor type select color	W2	pins 2 & 3 closed
»	Bus speed select CPU/2	SW1/7	Off
	Bus speed select CPU/4	SW1/7	On

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) 256K x 9	(4) 1M x 9
8MB	(4) 1M x 9	(4) 1M x 9

DRAM SWITCH CONFIGURATION
Size	SW1/1	SW1/2	SW1/3	SW1/4	SW1/8
1MB	Off	On	On	On	Off
2MB	On	Off	On	On	On
4MB	Off	Off	Off	Off	Off
5MB	Off	On	Off	On	Off
8MB	On	On	On	Off	On

DRAM WAIT STATE CONFIGURATION
Wait state	Read state	SW1/5	SW1/6
1	3	Off	On
1	2	On	Off
2	3	On	On