PLM-2531P/3331P/5031P Motherboard Settings and Configuration

Processor	80486SX/80487SX/ODP80486SX/80486DX/80486DX2
Processor Speed	25/33/40/50(internal)/50/66(internal)MHz
Chip Set	OPTI
Max. Onboard DRAM	128MB
Cache	64/128/256KB
BIOS	AMI/DTK
Dimensions	330mm x 218mm
I/O Options	None
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Reset switch	J1	Speaker	J4
Turbo switch	J2	Power LED & keylock	J5
Turbo LED	J3	External battery	J12

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Turbo switch enabled	J2	Closed
	turbo switch disabled	J2	Open
»	Monitor type select monochrome	J11	Open
	Monitor type select color	J11	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1
4MB	(4) 1M x 9	NONE
8MB	(4) 1M x 9	(4) 1M x 9
16MB	(4) 4M x 9	NONE
20MB	(4) 1M x 9	(4) 4M x 9
32MB	(4) 4M x 9	(4) 4M x 9
64MB	(4) 16M x 9	NONE
128MB	(4) 16M x 9	(4) 16M x 9

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG (U30)	Dirty (U31)	TAG (U32)	TAG (U33)
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 1	(1) 8K x 1	(1) 8K x 8	NONE
128KB	(4) 32K x 8	NONE	(1) 8K x 1	(1) 8K x 1	(1) 8K x 8	NONE
256KB	(4) 32K x 8	(4) 32K x 8	(1) 8K x 1	(1) 8K x 1	NONE	(1) 32K x 8

CACHE JUMPER CONFIGURATION
Size	J10
64KB	pins 9 & 10 closed
128KB	pins 1 & 2, 5 & 6, 11 & 12 closed
256KB	pins 1 & 2, 3 & 4, 5 & 6, 7 & 8, 9 & 10 closed

CPU TYPE CONFIGURATION
Type	J9
80486SX	pins 9 & 10 closed
80487SX	pins 3 & 4, 5 & 6, 7 & 8 closed
ODP80486SX	pins 3 & 4, 5 & 6, 7 & 8 closed
80486DX/DX2	pins 1 & 2, 3 & 4, 5 & 6 closed

CPU SPEED CONFIGURATION
Speed	J6	J7	J8
25MHz	pins 2 & 3 closed	Open	Closed
33MHz	pins 1 & 2 closed	Closed	Open
40MHz	pins 2 & 3 closed	Open	Closed
50iMHz	pins 2 & 3 closed	Open	Closed
50MHz	pins 2 & 3 closed	Open	Closed
66iMHz	pins 1 & 2 closed	Closed	Open