4025 LX (250-5125), 4033 LX Motherboard Settings and Configuration

Processor	80386
Processor Speed	25MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	16MB (on external memory cards)
Maximum Video Memory	None
Cache	32KB
BIOS	Unidentified
Dimensions	355mm x 304mm
I/O Options	External memory cards (2) CPU slot, floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial port
NPU Options	80387/3167

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse port	CN1	External battery	CN6
Serial port	CN2	Speaker	CN7
Parallel port	CN3	External memory cards	SL1 & SL2
IDE interface	CN4	CPU slot	SL3
Floppy drive interface	CN5

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Monitor type select through software	J1	Pins 2 & 3 closed
	Monitor type select color	J1	Pins 1 & 2 closed
	Monitor type select monochrome	J1	Open
»	IDE IOCHRDY enabled	J4	Closed
	IDE IOCHRDY disabled	J4	Open
»	IDE DIAG normal operation	J5	Open
	IDE DIAG diagnostic mode	J5	Closed
»	I/O recovery mode enabled	J6	Closed
	I/O recovery mode disabled	J6	Open
»	Factory configured - do not alter	J7	Closed
»	Factory configured - do not alter	J8	Closed
»	Factory configured - do not alter	J9	Closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(4) 256K x 9	None	None	None
2MB	(4) 256K x 9	(4) 256K x 9	None	None
4MB	(4) 1M x 9	None	None	None
8MB	(4) 1M x 9	(4) 1M x 9	None	None
4MB	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9	(4) 256K x 9
10MB	(4) 1M x 9	(4) 1M x 9	(4) 256K x 9	(4) 256K x 9
16MB	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9	(4) 1M x 9
Note: Banks 0 & 1 are located on the first memory card and banks 2 & 3 are located on the second memory card.

CACHE CONFIGURATION

Note: The location of the 32KB cache is unidentified.

BIOS SELECTION
Setting		J2	J3
	27128	Open	Open
»	27256	Closed	Closed
	27512	Open	Closed

MISCELLANEOUS TECHNICAL NOTE

Jumpers are labeled for information and location purposes only. The purpose of SL4 is unidentified.