MODEL D4/MT Motherboard Settings and Configuration

Processor	80486SX/80486DX/80486DX2
Processor Speed	25/33/50(internal)/66(internal)MHz
Chip Set	OPTI
Max. Onboard DRAM	32MB
Cache	64/128/256KB
BIOS	AMI
Dimensions	330mm x 218mm
I/O Options	32-bit local bus card slot, CPU card, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port	CN1	IDE interface	CN5
PS/2 mouse port	CN2	External battery	CN6
Parallel port	CN3	CPU card slot	SL1
Floppy drive interface	CN4	32-bit local bus slot	SL2

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	JP2	Closed
	Monitor type select monochrome	JP2	Open
»	CMOS memory normal operation	JP3	pins 1 & 2 closed
	CMOS memory clear	JP3	pins 2 & 3 closed
»	Standard local bus card installed	JP4	pins 1 & 2 closed
	Standard local bus card not installed	JP4	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

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG (U30)	TAG (U41)
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8	NONE
128KB	(4) 32K x 8	NONE	(1) 8K x 8	NONE
256KB	(4) 32K x 8	(4) 32K x 8	(1) 8K x 8	(1) 8K x 8

CACHE JUMPER/SWITCH CONFIGURATION
Size	JP1	SW1/1	SW1/2	SW1/3	SW1/4
64KB	pins 2 & 3 closed	Off	Off	Off	Off
128KB	pins 1 & 2 closed	On	On	Off	Off
256KB	pins 2 & 3 closed	On	On	On	On

CPU TYPE CONFIGURATION
CPU Type	JP1	JP2	JP3
80486SX	Open	pins 1 & 2 closed	pins 1 & 2 closed
80486DX	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed
80486DX2	pins 1 & 2 closed	pins 2 & 3 closed	pins 2 & 3 closed