M480-40/60 (BA307) Motherboard Settings and Configuration

Processor	80486DX (on external card)
Processor Speed	33MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	64MB
Maximum Video Memory	None
Cache	None
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, parallel port, PS/2 mouse port, serial port, CPU slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port	CN1	Front panel connector	CN4
Parallel port	CN2	Floppy drive interface	CN5
PS/2 mouse port	CN3	CPU slot	SL1

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Password normal operation	J16	Pins 1 & 2 closed
	Password clear	J16	Pins 2 & 3 closed
Note: If pins 2 & 3 are closed, move jumper to pins 1 & 2 to clear password. The jumper does not need to be replaced in its original position.

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
8MB	(2) 1M x 36	None	None	None
8MB	(2) 512K x 36	(2) 512K x 36	None	None
12MB	(2) 1M x 36	(2) 512K x 36	None	None
12MB	(2) 512K x 36	(2) 512K x 36	(2) 512K x 36	None
12MB	(2) 512K x 36	(2) 1M x 36	None	None
16MB	(2) 2M x 36	None	None	None
16MB	(2) 1M x 36	(2) 512K x 36	(2) 512K x 36	None
16MB	(2) 1M x 36	(2) 1M x 36	None	None
16MB	(2) 512K x 36	(2) 512K x 36	(2) 512K x 36	(2) 512K x 36
20MB	(2) 2M x 36	(2) 512K x 36	None	None
20MB	(2) 1M x 36	(2) 512K x 36	(2) 512K x 36	(2) 512K x 36
20MB	(2) 512K x 36	(2) 1M x 36	(2) 1M x 36	None
20MB	(2) 512K x 36	(2) 2M x 36	None	None
24MB	(2) 2M x 36	(2) 512K x 36	(2) 512K x 36	None
24MB	(2) 2M x 36	(2) 1M x 36	None	None
24MB	(2) 1M x 36	(2) 1M x 36	(2) 1M x 36	None
24MB	(2) 1M x 36	(2) 2M x 36	None	None
24MB	(2) 1M x 36	(2) 512K x 36	(2) 1M x 36	(2) 512K x 36
24MB	(2) 512K x 36	(2) 1M x 36	(2) 512K x 36	(2) 1M x 36
24MB	(2) 1M x 36	(2) 1M x 36	(2) 512K x 36	(2) 512K x 36
24MB	(2) 512K x 36	(2) 512K x 36	(2) 1M x 36	(2) 1M x 36
28MB	(2) 2M x 36	(2) 512K x 36	(2) 512K x 36	(2) 512K x 36
28MB	(2) 512K x 36	(2) 1M x 36	(2) 1M x 36	(2) 1M x 36
32MB	(2) 2M x 36	(2) 1M x 36	(2) 1M x 36	None
32MB	(2) 2M x 36	(2) 2M x 36	None	None
32MB	(2) 1M x 36	(2) 1M x 36	(2) 1M x 36	(2) 1M x 36
36MB	(2) 512K x 36	(2) 2M x 36	(2) 2M x 36	None
40MB	(2) 2M x 36	(2) 1M x 36	(2) 1M x 36	(2) 1M x 36

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
40MB	(2) 1M x 36	(2) 2M x 36	(2) 2M x 36	None
40MB	(2) 512K x 36	(2) 2M x 36	(2) 512K x 36	(2) 2M x 36
40MB	(2) 2M x 36	(2) 512K x 36	(2) 2M x 36	(2) 512K x 36
48MB	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36	None
48MB	(2) 1M x 36	(2) 2M x 36	(2) 1M x 36	(2) 2M x 36
48MB	(2) 2M x 36	(2) 1M x 36	(2) 2M x 36	(2) 1M x 36
52MB	(2) 512K x 36	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36
56MB	(2) 1M x 36	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36
64MB	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36	(2) 2M x 36

CONNECTIONS
Purpose	Location	Purpose	Location
FDU console interface connector	CN1	Speaker	CN5
FDC interface connector	CN2	Power supply interface connector	CN6
PEM connector (not used)	CN3	RUN/STRY button	CN7
Connector for boards IF496/IF497	CN4	Remote power on (not used)	CN8
Note: The sizes of all connectors is unidentified.

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Switch not used	SW1/2	N/A

FIRST FLOPPY DRIVE INTERFACE SELECTION
Bay	FDU/STU	Connector	SW1/1	SW1/3	SW1/4
10	1.44MB	Lower	On	Off	Off
10	2.88MB	Upper	Off	Off	Off

FIRST FLOPPY DRIVE INTERFACE SELECTION (CON’T)
Bay	FDU/STU	Connector	SW1/5	SW1/6	SW1/7	SW1/8
10	1.44MB	Lower	Off	Off	Off	Off
10	2.88MB	Upper	Off	Off	Off	Off

SECOND FLOPPY DRIVE INTERFACE SELECTION
Bay	FDU/STU	Connector	SW1/1	SW1/3	SW1/4
9	1.44MB	Lower	*	On	On
9	2.88MB	Upper	*	Off	On
9	1.2MB (with cable)	Lower	*	On	Off
9	80/120MB STU	Upper	*	Off	Off
Note: * uses the same settings for the drives already installed.

SECOND FLOPPY DRIVE INTERFACE SELECTION (CON’T)
Bay	FDU/STU	Connector	SW1/5	SW1/6	SW1/7	SW1/8
9	1.44MB	Lower	Off	Off	Off	Off
9	2.88MB	Upper	Off	Off	Off	Off
9	1.2MB (with cable)	Lower	Off	Off	Off	Off
9	80/120MB STU	Upper	Off	Off	Off	Off

THIRD FLOPPY DRIVE INTERFACE SELECTION
Bay	FDU/STU	Connector	SW1/1	SW1/2	SW1/3	SW1/4
8	1.44MB	Lower	*	*	*	*
8	2.88MB	Upper	*	*	*	*
8	1.2MB (with cable)	Lower	*	*	*	*
8	80/120MB STU	Upper	*	*	*	*
Note: * uses the same settings for the drives already installed.

THIRD FLOPPY DRIVE INTERFACE SELECTION (CON’T)
Bay	FDU/STU	Connector	SW1/5	SW1/6	SW1/7	SW1/8
8	1.44MB	Lower	On	On	Off	Off
8	2.88MB	Upper	Off	On	Off	Off
8	1.2MB (with cable)	Lower	On	Off	Off	Off
8	80/120MB STU	Upper	Off	Off	Off	Off