Processor	80846DX/CX486DX2/80486DX2/SL80486DX2/AM486DX4/ 80486DX4/P24D/P24T/CX M1SC
Processor Speed	25/33/50(internal)/66(internal)/75(internal)/100(internal)/MHz
Chip Set	Unidentified
Video Chip Set	Trident
Maximum Onboard Memory	132MB
Maximum Video Memory	1MB
Cache	128/256KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interfaces (2), parallel port, PS/2 mouse port, serial ports (2), VGA feature connector, VGA port, riser slot
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
IDE interface 1	CN1	Serial port 1	CN11
IDE interface 2	CN2	Serial port 2	CN12
IDE interface LED	CN3	Parallel port	CN13
Power LED	CN4	Riser slot	SL1
PS/2 mouse port	CN8	VGA port	VNC1
Floppy drive interface	CN10	VGA feature connector	VNC3

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	CMOS memory normal operation	JP28	Pins 2 & 3 closed
	CMOS memory clear	JP28	Pins 1 & 2 closed
»	Factory configured - do not alter	JP29	Unidentified
»	Factory configured - do not alter	JP34	Unidentified
»	Factory configured - do not alter	JP35	Unidentified
»	Factory configured - do not alter	VJ1	Unidentified
»	Monitor type select interlaced	VJ3	Closed
	Monitor type select non interlaced	VJ3	Open
»	Factory configured - do not alter	VJ4	Unidentified
»	On board video enabled	VJP1	Pins 2 & 3 closed
	On board video disabled	VJP1	Pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2
4MB	4MB	None	None
5MB	4MB	(1) 256K x 32	None
6MB	4MB	(1) 256K x 32	(1) 256K x 32
6MB	4MB	(1) 512K x 32	None
8MB	4MB	(1) 512K x 32	(1) 512K x 32
8MB	4MB	(1) 1M x 32	None
12MB	4MB	(1) 1M x 32	(1) 1M x 32
12MB	4MB	(1) 2M x 32	None
20MB	4MB	(1) 2M x 32	(1) 2M x 32
20MB	4MB	(1) 4M x 32	None
36MB	4MB	(1) 4M x 32	(1) 4M x 32
36MB	4MB	(1) 8M x 32	None
68MB	4MB	(1) 8M x 32	(1) 8M x 32
68MB	4MB	(1) 16M x 32	None
132MB	4MB	(1) 16M x 32	(1) 16M x 32
Note: Bank 0 is factory installed and is not configurable.

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	None	(1) 32K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
Note: The location of banks 0 & 1 is unidentified.

CACHE JUMPER CONFIGURATION
Size	JP19	JP20	JP21
None	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
128KB	Pins 2 & 3 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
256KB	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 2 & 3 closed

VIDEO MEMORY CONFIGURATION
Size	Bank 0	Bank 1
512KB	512KB	None
1MB	512KB	512KB
Note: Bank 0 is factory installed and is not configurable. The size of the upgrade chips is unidentified.

CPU SPEED SELECTION
Speed	JP24	JP25
25MHz	Pins 2 & 3 closed	Pins 2 & 3 closed
33MHz	Pins 1 & 2 closed	Pins 1 & 2 closed
50iMHz	Pins 2 & 3 closed	Pins 2 & 3 closed
66iMHz	Pins 1 & 2 closed	Pins 1 & 2 closed
75iMHz	Pins 2 & 3 closed	Pins 2 & 3 closed
100iMHz	Pins 1 & 2 closed	Pins 1 & 2 closed

CPU TYPE SELECTION
Type	JP1	JP2	JP3	JP4	JP5	JP6
80486DX	1 & 2, 3 & 4	3 & 4	Open	2 & 3, 4 & 5	1 & 2	2 & 3
CX486DX2	1 & 2, 3 & 4	3 & 4	2 & 3	1 & 2, 3 & 4	1 & 2	2 & 3
80486DX2	1 & 2, 3 & 4	3 & 4	Open	2 & 3, 4 & 5	1 & 2	2 & 3
SL80486DX2	1 & 2, 3 & 4	3 & 4	Open	2 & 3, 4 & 5	1 & 2	2 & 3
AM486DX4	1 & 2, 3 & 4	3 & 4	Open	2 & 3, 4 & 5	1 & 2	2 & 3
80486DX4	1 & 2, 3 & 4	3 & 4	Open	2 & 3, 4 & 5	1 & 2	2 & 3
P24D	1 & 2, 3 & 4	3 & 4	Open	2 & 3, 4 & 5	1 & 2	2 & 3
P24T	1 & 2, 3 & 4	3 & 4	1 & 2	2 & 3, 4 & 5	1 & 2	2 & 3
CX M1SC	1 & 2, 3 & 4	3 & 4, 5 & 6	Open	2 & 3, 4 & 5	1 & 2	2 & 3
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type	JP7	JP8	JP9	JP10	JP11	JP12
80486DX	1 & 2	Open	Open	Open	Open	3 & 4
CX486DX2	2 & 3	Open	2 & 3	1 & 2	Open	3 & 4
80486DX2	2 & 3	1 & 2	Open	Open	1 & 2	3 & 4
SL80486DX2	1 & 2	Open	Open	Open	Open	3 & 4
AM486DX4	1 & 2	Open	Open	Open	Open	3 & 4
80486DX4	1 & 2	Open	Open	Open	Open	3 & 4
P24D	1 & 2	1 & 2	Open	Open	1 & 2	3 & 4
P24T	1 & 2	Open	1 & 2	2 & 3	Open	2 & 3
CX M1SC	1 & 2	1 & 2	Open	Open	1 & 2	3 & 4
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION (CON’T)
Type	JP13	JP14	JP22	JP23	JP32	JP33
80486DX	Open	Open	1 & 2	1 & 2	Open	Open
CX486DX2	Open	Open	1 & 2	2 & 3	Open	Open
80486DX2	Open	1 & 2	1 & 2	1 & 2	Open	Open
SL80486DX2	Open	Open	1 & 2	1 & 2	Open	Open
AM486DX4	Open	Open	1 & 2	1 & 2	Open	Open
80486DX4	Open	Open	1 & 2	1 & 2	Open	Open
P24D	Open	1 & 2	1 & 2	1 & 2	Open	Open
P24T	Open	Open	1 & 2	1 & 2	Open	Open
CX M1SC	Open	1 & 2	1 & 2	2 & 3	Open	1 & 2
Note: Pins designated should be in the closed position.

CPU VOLTAGE SELECTION
Voltage	JP15	JP16	JP17	JP18	JP36
3.3v	Open	Open	Closed	Closed	2 & 3
3.45v	Open	Open	Closed	Closed	1 & 2
5v	Closed	Closed	Open	Open	Open
Note: Pins designated should be in the closed position.

DMA CHANNEL SELECTION
Channel		JP30	JP31
	1	Pins 1 & 2 closed	Pins 1 & 2 closed
»	3	Pins 2 & 3 closed	Pins 2 & 3 closed