WYSE DECISION 486SI Motherboard Settings and Configuration

WYSE TECHNOLOGY, INC.

WYSE DECISION 486SI

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

CONNECTIONS
Purpose
Location
Purpose
Location
PS/2 mouse port
CN1
Floppy drive interface
CN6
VGA port
CN2
IDE interface
CN7
Parallel port
CN3
External battery
J1
Serial port 2
CN4
Front panel connector
J2
Serial port 1
CN5
Riser Card
SL1

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
»
IRQ2 enabled
JP33
Open

IRQ2 disabled
JP33
Closed
»
ET4000 VGA card revision select revision G
JP37
Closed

ET4000 VGA card revision select revision F
JP37
Open
»
Clock generator select normal
JP41
pins 1 & 2 closed

Clock generator select oscillator
JP41
pins 2 & 3 closed
»
WY-790 enabled
JP42
Closed

WY-790 disabled
JP42
Open
»
Diskette controller IRQ select IRQ7
JP44
pins 1 & 2 closed

Diskette controller IRQ select IRQ5
JP44
pins 2 & 3 closed
»
Linear address enabled
JP46
pins 2 & 3 closed

Linear address disabled
JP46
pins 1 & 2 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) 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) 1M x 36
(1) 1M x 36
NONE
NONE
9MB
(1) 1M x 36
(1) 1M x 36
(1) 256K x 36
NONE
10MB
(1) 1M x 36
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
12MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
NONE
13MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 256K x 36
16MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
16MB
(1) 4M x 36
NONE
NONE
NONE
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
21MB
(1) 4M x 36
(1) 1M x 36
(1) 256K x 36
NONE
22MB
(1) 4M x 36
(1) 1M x 36
(1) 256K x 36
(1) 256K x 36
24MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
NONE
25MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 256K x 36

DRAM CONFIGURATION (CON’T)
Size
Bank 0
Bank 1
Bank 2
Bank 3
28MB
(1) 4M x 36
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
32MB
(1) 4M x 36
(1) 4M x 36
NONE
NONE
33MB
(1) 4M x 36
(1) 4M x 36
(1) 256K x 36
NONE
34MB
(1) 4M x 36
(1) 4M x 36
(1) 256K x 36
(1) 256K x 36
36MB
(1) 4M x 36
(1) 4M x 36
(1) 1M x 36
NONE
37MB
(1) 4M x 36
(1) 4M x 36
(1) 1M x 36
(1) 256K 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
49MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 256K 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
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

CACHE JUMPER CONFIGURATION
Size
JP4
JP5
JP7
None
Open
Open
Open
64KB
Open
Open
Open
256KB
Closed
Closed
Closed

CPU TYPE CONFIGURATION
Type
JP1
JP2
JP3
80486SX
Open
Open
pins 1 & 2 closed
80486DX
pins 1 & 2 closed
Closed
pins 2 & 3 closed
SL80486DX2
pins 1 & 2 closed
Closed
pins 2 & 3 closed

CPU SPEED CONFIGURATION
Speed
JP38
JP39
JP40
16MHz
Closed
Open
Closed
20MHz
Closed
Open
Open
25MHz
Open
Closed
Closed
33MHz
Open
Closed
Open
50iMHz
Open
Closed
Closed
66iMHz
Open
Closed
Open

VRAM CONFIGURATION
Size
Bank 0
Bank 1
512KB
(4) 256K x 4
NONE
1MB
(4) 256K x 4
(4) 256K x 4

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

VGA WAIT STATE CONFIGURATION
Wait states
JP31
JP32
0 wait states
Closed
Open
1 wait state
Open
Closed

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WYSE DECISION 486SI Motherboard Settings and Configuration

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

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse port	CN1	Floppy drive interface	CN6
VGA port	CN2	IDE interface	CN7
Parallel port	CN3	External battery	J1
Serial port 2	CN4	Front panel connector	J2
Serial port 1	CN5	Riser Card	SL1

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
»	IRQ2 enabled	JP33	Open
	IRQ2 disabled	JP33	Closed
»	ET4000 VGA card revision select revision G	JP37	Closed
	ET4000 VGA card revision select revision F	JP37	Open
»	Clock generator select normal	JP41	pins 1 & 2 closed
	Clock generator select oscillator	JP41	pins 2 & 3 closed
»	WY-790 enabled	JP42	Closed
	WY-790 disabled	JP42	Open
»	Diskette controller IRQ select IRQ7	JP44	pins 1 & 2 closed
	Diskette controller IRQ select IRQ5	JP44	pins 2 & 3 closed
»	Linear address enabled	JP46	pins 2 & 3 closed
	Linear address disabled	JP46	pins 1 & 2 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) 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) 1M x 36	(1) 1M x 36	NONE	NONE
9MB	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36	NONE
10MB	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
13MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36
16MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
16MB	(1) 4M x 36	NONE	NONE	NONE
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
21MB	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36	NONE
22MB	(1) 4M x 36	(1) 1M x 36	(1) 256K x 36	(1) 256K x 36
24MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	NONE
25MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 256K x 36

DRAM CONFIGURATION (CON’T)
Size	Bank 0	Bank 1	Bank 2	Bank 3
28MB	(1) 4M x 36	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
33MB	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36	NONE
34MB	(1) 4M x 36	(1) 4M x 36	(1) 256K x 36	(1) 256K x 36
36MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	NONE
37MB	(1) 4M x 36	(1) 4M x 36	(1) 1M x 36	(1) 256K 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
49MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 256K 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
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

CACHE JUMPER CONFIGURATION
Size	JP4	JP5	JP7
None	Open	Open	Open
64KB	Open	Open	Open
256KB	Closed	Closed	Closed

CPU TYPE CONFIGURATION
Type	JP1	JP2	JP3
80486SX	Open	Open	pins 1 & 2 closed
80486DX	pins 1 & 2 closed	Closed	pins 2 & 3 closed
SL80486DX2	pins 1 & 2 closed	Closed	pins 2 & 3 closed

CPU SPEED CONFIGURATION
Speed	JP38	JP39	JP40
16MHz	Closed	Open	Closed
20MHz	Closed	Open	Open
25MHz	Open	Closed	Closed
33MHz	Open	Closed	Open
50iMHz	Open	Closed	Closed
66iMHz	Open	Closed	Open

VRAM CONFIGURATION
Size	Bank 0	Bank 1
512KB	(4) 256K x 4	NONE
1MB	(4) 256K x 4	(4) 256K x 4

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

VGA WAIT STATE CONFIGURATION
Wait states	JP31	JP32
0 wait states	Closed	Open
1 wait state	Open	Closed