Processor	80486SX/80486DX/80486DX2
Processor Speed	16/20/25/33/50(internal)/66(internal)MHz
Chip Set	Wyse
Max. Onboard DRAM	64MB
Cache	64/256KB
BIOS	Wyse
Dimensions	330mm x 218mm
I/O Options	Bus mouse port, floppy drive interface, IDE interface, parallel port, serial ports (2), VGA port
NPU Options	4167

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 2	CN1	Reset switch	CN9
Serial port 1	CN2	Keylock	CN10
Parallel port	CN3	Key connector	CN11
VGA port	CN4	Hard drive LED	CN12
Bus mouse port	CN5	External battery	J3
Speaker	CN6	IDE interface LED	J9
Power LED	CN7	Floppy drive interface	J10
Turbo LED	CN8

USER CONFIGURABLE SETTINGS
Function		Jumper	Position
»	Monitor type select color	JP16	Closed
	Monitor type select monochrome	JP16	Open
»	Factory configured - do not alter	JP17	Open
»	IDE interface enabled	JP18	Open
	IDE interface disabled	JP18	Closed
»	Factory configured - do not alter	JP19	Open
»	Factory configured - do not alter	JP20	Open
»	Factory configured - do not alter	JP21	Open
»	Factory configured - do not alter	JP22	Open
»	Video interrupt IRQ2 disabled	JP33	Open
	Video interrupt IRQ2 enabled	JP33	Closed
»	Video chipset ET4000 VGA (Rev. G)	JP37	Closed
	Video chipset ET4000 VGA (Rev. F)	JP37	Open
»	Clock generator	JP41	pins 1 & 2 closed
	Clock generator Oscillator (backup)	JP41	pins 2 & 3 closed
»	WY-790 select enabled	JP42	Closed
	WY-790 select disabled	JP42	Open
»	External board diskette controller IRQ7	JP44	pins 1 & 2 closed
	External board diskette controller IRQ5	JP44	pins 2 & 3 closed
»	Linear address enabled	JP46	pins 1 & 2 closed
	Linear address disabled	JP46	pins 2 & 3 closed

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
4MB	(1) 1M x 36	NONE	NONE	NONE
5MB	(1) 256K x 36	(1) 1M x 36	NONE	NONE
6MB	(1) 256K x 36	(1) 256K x 36	(1) 1M x 36	NONE
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
9MB	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36	NONE
10MB	(1) 256K x 36	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
13MB	(1) 256K x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	NONE	NONE	NONE
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
20MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
20MB	(1) 1M x 36	(1) 4M x 36	NONE	NONE
24MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	NONE
24MB	(1) 1M x 36	(1) 4M x 36	(1) 1M x 36	NONE
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
36MB	(1) 4M x 36	(1) 1M x 36	(1) 4M x 36	NONE
36MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	NONE
36MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	NONE

DRAM CONFIGURATION (CONT.)
Size	Bank 0	Bank 1	Bank 2	Bank 3
40MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36
40MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36
40MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
52MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
52MB	(1) 4M x 36	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36
52MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
0KB	NONE	NONE	NONE
64KB	(4) 8K x 8	(4) 8K x 8	(1) 8K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(1) 32K x 8
Note:The exact locations of Bank 0 and Bank 1 are unknown.

CACHE JUMPER CONFIGURATION
Size	JP4	JP5	JP7
0KB	Open	Open	Open
64KB	Open	Open	Open
256KB	Closed	Closed	Closed

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

CPU SPEED CONFIGURATION
Speed	JP38	JP39	JP40
16MHz	pins 1 & 2 closed	Open	pins 1 & 2 closed
20MHz	pins 1 & 2 closed	Open	Open
25MHz	Open	pins 1 & 2 closed	pins 1 & 2 closed
33MHz	Open	pins 1 & 2 closed	Open
50iMHz	Open	pins 1 & 2 closed	pins 1 & 2 closed
66iMHz	Open	pins 1 & 2 closed	Open

VGA WAIT STATE
Wait states		JP31	JP32
»	1 wait state	Closed	Closed
	0 wait states	pins 1 & 2 closed	Open

VGA SELECT
Setting	JP8	JP35	JP45
Enabled	pins 1 & 2 closed	pins 1 & 2 closed	pins 1 & 2 closed
Disabled	pins 2 & 3 closed	pins 2 & 3 closed	pins 2 & 3 closed

VRAM MEMORY CONFIGURATION
Size	Bank 0	Bank 1
512KB	(4) 44256	NONE
1MB	(4) 44256	(4) 44256