486 VESA LB WINTOWER Motherboard Settings and Configuration

AUSTIN COMPUTER SYSTEMS

486 VESA LB WINTOWER

Processor
80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed
20/25/33/50(internal)/66(internal)MHz
Chip Set
Micronics
Max. Onboard DRAM
64MB
Cache
None
BIOS
Phoenix
Dimensions
330mm x 218mm
I/O Options
32-bit external cache memory card slot, floppy interface, IDE interfaces (2), parallel port, serial port (2), VESA local bus slots (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
Serial port 2
J11
Auxiliary IDE interface
J30
Parallel port
J12
VESA local bus slots
S1 & S2
Serial port 1
J14
32-bit external cache memory card
S3
Floppy interface
J15
Reset switch
W15
IDE interface
J16
Turbo LED
W17
Auxiliary keyboard connector
J24
Turbo switch
W18
Speaker
J28
IDE interface LED
W19
Power LED & keylock
J29

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
CPU type select 80486DX or 80486DX2
W13
pins 1 & 2 closed

CPU type select 80486SX
W13
pins 2 & 3 closed
»
Parallel port select output mode (printer)
W16
pins 2 & 3 closed

Parallel port select input mode (scanner)
W16
pins 1 & 2 closed
»
Flash memory type select default
W20
pins 2 & 3 closed

Flash memory type select recovery
W20
pins 1 & 2 closed

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
4MB
(1) 4M x 9
NONE
NONE
NONE
8MB
(1) 4M x 9
(1) 4M x 9
NONE
NONE
12MB
(1) 4M x 9
(1) 4M x 9
(1) 4M x 9
NONE
16MB
(1) 4M x 9
(1) 4M x 9
(1) 4M x 9
(1) 4M x 9
16MB
(1) 16M x 9
NONE
NONE
NONE
20MB
(1) 4M x 9
(1) 16M x 9
NONE
NONE
24MB
(1) 4M x 9
(1) 4M x 9
(1) 16M x 9
NONE
28MB
(1) 4M x 9
(1) 4M x 9
(1) 4M x 9
(1) 16M x 9
32MB
(1) 16M x 9
(1) 16M x 9
NONE
NONE
36MB
(1) 4M x 9
(1) 16M x 9
(1) 16M x 9
NONE
40MB
(1) 4M x 9
(1) 4M x 9
(1) 16M x 9
(1) 16M x 9
48MB
(1) 16M x 9
(1) 16M x 9
(1) 16M x 9
NONE
52MB
(1) 4M x 9
(1) 16M x 9
(1) 16M x 9
(1) 16M x 9
64MB
(1) 16M x 9
(1) 16M x 9
(1) 16M x 9
(1) 16M x 9

DRAM SWITCH CONFIGURATION
Size
SW1/1
SW1/2
SW1/3
SW1/4
4MB
On
On
On
On
8MB
Off
On
On
On
12MB
On
Off
On
On
16MB
Off
Off
On
On
16MB
On
On
Off
On
20MB
On
On
Off
Off
24MB
On
Off
On
Off
28MB
Off
On
On
Off
32MB
Off
On
Off
On
36MB
On
Off
Off
Off
40MB
Off
Off
On
Off
48MB
On
Off
Off
On
52MB
Off
Off
Off
Off
64MB
Off
Off
Off
On

CPU SPEED CONFIGURATION
Speed
SW1/5
SW1/6
SW1/7
SW1/8
25MHz
On
Off
On
Off
33MHz
Off
On
Off
Off
50iMHz
On
Off
On
Off
66iMHz
Off
On
Off
Off

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486 VESA LB WINTOWER Motherboard Settings and Configuration

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Processor	80486SX/80487SX/80486DX/ODP486SX/80486DX2
Processor Speed	20/25/33/50(internal)/66(internal)MHz
Chip Set	Micronics
Max. Onboard DRAM	64MB
Cache	None
BIOS	Phoenix
Dimensions	330mm x 218mm
I/O Options	32-bit external cache memory card slot, floppy interface, IDE interfaces (2), parallel port, serial port (2), VESA local bus slots (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
Serial port 2	J11	Auxiliary IDE interface	J30
Parallel port	J12	VESA local bus slots	S1 & S2
Serial port 1	J14	32-bit external cache memory card	S3
Floppy interface	J15	Reset switch	W15
IDE interface	J16	Turbo LED	W17
Auxiliary keyboard connector	J24	Turbo switch	W18
Speaker	J28	IDE interface LED	W19
Power LED & keylock	J29

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	CPU type select 80486DX or 80486DX2	W13	pins 1 & 2 closed
	CPU type select 80486SX	W13	pins 2 & 3 closed
»	Parallel port select output mode (printer)	W16	pins 2 & 3 closed
	Parallel port select input mode (scanner)	W16	pins 1 & 2 closed
»	Flash memory type select default	W20	pins 2 & 3 closed
	Flash memory type select recovery	W20	pins 1 & 2 closed

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 4M x 9	NONE	NONE	NONE
8MB	(1) 4M x 9	(1) 4M x 9	NONE	NONE
12MB	(1) 4M x 9	(1) 4M x 9	(1) 4M x 9	NONE
16MB	(1) 4M x 9	(1) 4M x 9	(1) 4M x 9	(1) 4M x 9
16MB	(1) 16M x 9	NONE	NONE	NONE
20MB	(1) 4M x 9	(1) 16M x 9	NONE	NONE
24MB	(1) 4M x 9	(1) 4M x 9	(1) 16M x 9	NONE
28MB	(1) 4M x 9	(1) 4M x 9	(1) 4M x 9	(1) 16M x 9
32MB	(1) 16M x 9	(1) 16M x 9	NONE	NONE
36MB	(1) 4M x 9	(1) 16M x 9	(1) 16M x 9	NONE
40MB	(1) 4M x 9	(1) 4M x 9	(1) 16M x 9	(1) 16M x 9
48MB	(1) 16M x 9	(1) 16M x 9	(1) 16M x 9	NONE
52MB	(1) 4M x 9	(1) 16M x 9	(1) 16M x 9	(1) 16M x 9
64MB	(1) 16M x 9	(1) 16M x 9	(1) 16M x 9	(1) 16M x 9

DRAM SWITCH CONFIGURATION
Size	SW1/1	SW1/2	SW1/3	SW1/4
4MB	On	On	On	On
8MB	Off	On	On	On
12MB	On	Off	On	On
16MB	Off	Off	On	On
16MB	On	On	Off	On
20MB	On	On	Off	Off
24MB	On	Off	On	Off
28MB	Off	On	On	Off
32MB	Off	On	Off	On
36MB	On	Off	Off	Off
40MB	Off	Off	On	Off
48MB	On	Off	Off	On
52MB	Off	Off	Off	Off
64MB	Off	Off	Off	On

CPU SPEED CONFIGURATION
Speed	SW1/5	SW1/6	SW1/7	SW1/8
25MHz	On	Off	On	Off
33MHz	Off	On	Off	Off
50iMHz	On	Off	On	Off
66iMHz	Off	On	Off	Off