Processor	80486SX/SL80486SX/CX486DX/IBM486DX/TI486DX/AM486DX/ 80486DX/SL80486DX/CX486DX2/IBM486DX2/TI486DX2/AM486DX2/(SL)AM486DX2/80486DX2/SL80486DX2/AM486DX4/(SL)AM486DX2/SL80486DX4/P24D/P24T/CXM1-SC
Processor Speed	25/33/40/50(internal)/50/66(internal)/75(internal)/80(internal)/ 100(internal)/120(internal)MHz
Chip Set	Unidentified
Video Chip Set	None
Maximum Onboard Memory	256MB (EDO supported)
Maximum Video Memory	None
Cache	128/256/512/1024KB
BIOS	AMI
Dimensions	254mm x 218mm
I/O Options	32-bit PCI slots (3), floppy drive interface, game interface, green PC connector, IDE interfaces (2), parallel port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Parallel port	J2	Green PC connector	JP17
Game interface	J3	Turbo LED	JP19
Serial port 1	J9	IDE interface LED 1	JP20
Serial port 2	J13	IDE interface LED 2	JP21
Floppy drive interface	J14	Power LED & keylock	JP22
IDE interface 2	J15	Speaker	JP23
IDE interface 1	J16	Turbo switch	JP24
Green PC connector (monitor)	JP1	Reset switch	JP25
External battery	JP2	32-bit PCI slots	PC1 - PC3
Chassis fan power	JP10

USER CONFIGURABLE SETTINGS
Function		Label	Position
	Flash BIOS voltage select 12v	JP5	Pins 1 & 2 closed
	Flash BIOS voltage select 5v	JP5	Pins 2 & 3 closed
»	Factory configured - do not alter	JP16	Open

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
1MB	(1) 256K x 36	None	None	None
2MB	(1) 256K x 36	(1) 256K x 36	None	None
3MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	None
4MB	(1) 1M x 36	None	None	None
4MB	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
5MB	(1) 1M x 36	(1) 256K x 36	None	None
6MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	None
7MB	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
8MB	(1) 2M x 36	None	None	None
8MB	(1) 1M x 36	(1) 1M x 36	None	None
9MB	(1) 2M x 36	(1) 256K x 36	None	None
10MB	(1) 2M x 36	(1) 256K x 36	(1) 256K x 36	None
11MB	(1) 2M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
12MB	(1) 2M x 36	(1) 1M x 36	None	None
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	None
16MB	(1) 4M x 36	None	None	None
16MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	None
16MB	(1) 2M x 36	(1) 2M x 36	None	None
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
17MB	(1) 4M x 36	(1) 256K x 36	None	None
18MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	None
19MB	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
20MB	(1) 4M x 36	(1) 1M x 36	None	None

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
20MB	(1) 2M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	None
24MB	(1) 4M x 36	(1) 2M x 36	None	None
24MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	None
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 8M x 36	None	None	None
32MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	None
32MB	(1) 4M x 36	(1) 4M x 36	None	None
32MB	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
33MB	(1) 8M x 36	(1) 256K x 36	None	None
34MB	(1) 8M x 36	(1) 256K x 36	(1) 256K x 36	None
36MB	(1) 8M x 36	(1) 1M x 36	None	None
36MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	None
40MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	None
40MB	(1) 8M x 36	(1) 2M x 36	None	None
40MB	(1) 4M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
44MB	(1) 8M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
48MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	None
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	None
48MB	(1) 4M x 36	(1) 8M x 36	None	None
56MB	(1) 8M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
64MB	(1) 16M x 36	None	None	None
64MB	(1) 8M x 36	(1) 4M x 36	(1) 4M x 36	None
64MB	(1) 8M x 36	(1) 8M x 36	None	None
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
65MB	(1) 16M x 36	(1) 256K x 36	None	None
66MB	(1) 16M x 36	(1) 256K x 36	(1) 256K x 36	None
67MB	(1) 16M x 36	(1) 256K x 36	(1) 256K x 36	(1) 256K x 36
68MB	(1) 16M x 36	(1) 1M x 36	None	None
72MB	(1) 16M x 36	(1) 1M x 36	(1) 1M x 36	None
72MB	(1) 16M x 36	(1) 2M x 36	None	None
72MB	(1) 2M x 36	(1) 8M x 36	(1) 8M x 36	None
76MB	(1) 16M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
80MB	(1) 16M x 36	(1) 2M x 36	(1) 2M x 36	None
80MB	(1) 16M x 36	(1) 4M x 36	None	None
80MB	(1) 8M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
88MB	(1) 16M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
96MB	(1) 16M x 36	(1) 4M x 36	(1) 4M x 36	None
96MB	(1) 16M x 36	(1) 8M x 36	None	None
96MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	None
100MB	(1) 1M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
112MB	(1) 16M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
112MB	(1) 4M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
128MB	(1) 16M x 36	(1) 16M x 36	None	None
128MB	(1) 16M x 36	(1) 8M x 36	(1) 8M x 36	None
128MB	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
132MB	(1) 32M x 36	(1) 1M x 36	None	None
136MB	(1) 32M x 36	(1) 1M x 36	(1) 1M x 36	None
136MB	(1) 32M x 36	(1) 2M x 36	None	None
140MB	(1) 32M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
144MB	(1) 32M x 36	(1) 4M x 36	None	None
152MB	(1) 32M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
152MB	(1) 32M x 36	(1) 2M x 36	(1) 2M x 36	(1) 2M x 36
160MB	(1) 16M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
160MB	(1) 32M x 36	(1) 4M x 36	(1) 4M x 36	None
160MB	(1) 32M x 36	(1) 8M x 36	None	None
176MB	(1) 32M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
192MB	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36	None
192MB	(1) 32M x 36	(1) 8M x 36	(1) 8M x 36	None
224MB	(1) 32M x 36	(1) 8M x 36	(1) 8M x 36	(1) 8M x 36
256MB	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36	(1) 16M x 36
256MB	(1) 32M x 36	(1) 32M x 36	None	None
256MB	(1) 64M x 36	None	None	None
Note: Board accepts EDO memory. The location of banks 0 & 1 are unidentified.

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
128KB	(4) 32K x 8	None	(1) 32K x 8
256KB (A)	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
256KB (B)	(4) 64K x 8	None	(1) 32K x 8
512KB	(4) 64K x 8	(4) 64K x 8	(1) 32K x 8
1MB	(4) 128K x 8	None	(1) 32K x 8
Note: The location of banks 0 & 1 are unidentified.

CACHE JUMPER CONFIGURATION
Size	JP13	JP14	JP15
128KB	1 & 2	1 & 2	Open
256KB (A)	2 & 3	2 & 3	5 & 6
256KB (B)	1 & 2, 3 & 4	1 & 2	5 & 6
512KB	1 & 2, 3 & 4, 5 & 6	1 & 2	3 & 4, 5 & 6
1MB	2 & 3, 4 & 5, 6 & 7	2 & 3	1 & 2, 3 & 4, 5 & 6

CPU SPEED SELECTION
Speed	JP11	JP12	JP18
25MHz	5 & 6	2 & 3	Open
33MHz	1 & 2, 3 & 4, 5 & 6	2 & 3	Open
40MHz	3 & 4, 5 & 6	1 & 2	Closed
50iMHz	5 & 6	2 & 3	Open
50MHz	1 & 2	1 & 2	Closed
66iMHz	1 & 2, 3 & 4, 5 & 6	2 & 3	Open
75iMHz	5 & 6	2 & 3	Open
80iMHz	3 & 4, 5 & 6	1 & 2	Closed
100iMHz	1 & 2, 3 & 4, 5 & 6	2 & 3	Open
120iMHz	3 & 4, 5 & 6	1 & 2	Closed
Note: Pins designated should be in the closed position.

CPU TYPE SELECTION
Type	JP26	JP27	JP28	JP29
80486SX	Open	Open	Pins 1 & 2 closed	Pins 1 & 2 closed
SL80486SX	Closed	Open	Pins 1 & 2 closed	Pins 1 & 2 closed
CX486DX	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
IBM486DX	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
TI486DX	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
AM486DX	Open	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
80486DX	Open	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
SL80486DX	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
CX486DX2	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
IBM486DX2	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
TI486DX2	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
AM486DX2	Open	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
(SL)AM486DX2	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
80486DX2	Open	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
SL80486DX2	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
AM486DX4	Open	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
(SL)AM486DX4	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
SL80486DX4	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 1 & 2 closed
P24D	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
P24T	Closed	Pins 1 & 2 closed	Pins 2 & 3 closed	Pins 2 & 3 closed
CXM1-SC	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed

CPU TYPE SELECTION (CON’T)
Type	JP30	JP31
80486SX	Pins 1 & 8 closed	Open
SL80486SX	Pins 2 & 9, 5 & 12 closed	Pins 2 & 9 closed
CX486DX	Pins 3 & 10, 6 & 13 closed	Pins 3 & 10, 4 & 11 closed
IBM486DX	Pins 3 & 10, 6 & 13 closed	Pins 3 & 10, 4 & 11 closed
TI486DX	Pins 3 & 10, 6 & 13 closed	Pins 3 & 10, 4 & 11 closed
AM486DX	Pins 1 & 8, 7 & 14 closed	Open
80486DX	Pins 1 & 8 closed	Open
SL80486DX	Pins 2 & 9, 5 & 12, 7 & 14 closed	Pins 2 & 9 closed
CX486DX2	Pins 3 & 10, 6 & 13 closed	Pins 3 & 10, 4 & 11 closed
IBM486DX2	Pins 3 & 10, 6 & 13 closed	Pins 3 & 10, 4 & 11 closed
TI486DX2	Pins 3 & 10, 6 & 13 closed	Pins 3 & 10, 4 & 11 closed
AM486DX2	Pins 1 & 8, 7 & 14 closed	Open
(SL)AM486DX2	Pins 2 & 9, 4 & 11, 5 & 12 closed	Pins 2 & 9, 6 & 13, 7 & 14 closed
80486DX2	Pins 1 & 8 closed	Open
SL80486DX2	Pins 2 & 9, 5 & 12, 7 & 14 closed	Pins 2 & 9 closed
AM486DX4	Pins 1 & 8 closed	Open
(SL)AM486DX4	Pins 2 & 9, 5 & 12 closed	Pins 2 & 9, 6 & 13, 7 & 14 closed
SL80486DX4	Pins 2 & 9, 5 & 12 closed	Pins 2 & 9 closed
P24D	Pins 2 & 9, 5 & 12 closed	Pins 2 & 9, 6 & 13, 7 & 14 closed
P24T	Pins 2 & 9, 5 & 12 closed	Pins 2 & 9 closed
CXM1-SC	Pins 2 & 9, 5 & 12 closed	Pins 2 & 9, 6 & 13, 7 & 14 closed

CPU VOLTAGE SELECTION
Voltage	JP6	JP7	JP8	JP9
3.3v	Closed	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
4v	Open	Pins 1 & 2 closed	Pins 1 & 2 closed	Pins 1 & 2 closed
5v	Closed	Pins 2 & 3 closed	Pins 2 & 3 closed	Pins 2 & 3 closed

DMA CHANNEL SELECTION
Channel	JP3	JP4
1	Pins 1 & 2 closed	Pins 1 & 2 closed
3	Pins 2 & 3 closed	Pins 2 & 3 closed