SYSTEM XPS 50/66 FS/MDT Motherboard Settings and Configuration

DELL COMPUTER CORPORATION

SYSTEM XPS 50/66 FS/MDT

Processor
80486DX2
Processor Speed
50(internal)/66(internal)MHz
Chip Set
MIC
Max. Onboard DRAM
64MB
Cache
128/256KB
BIOS
Unidentified
Dimensions
330mm x 218mm
I/O Options
32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2)
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
PS/2 mouse port
CN1
Serial port 2
J16
Floppy drive interface
CN2
Speaker
J33
IDE interface
CN3
Power LED & keylock
J34
External battery
CN4
IDE interface LED
W11
Serial port 1
J12
Reset switch
W12
Parallel port
J15
32-bit VESA Local bus slots
J29 & J30

USER CONFIGURABLE SETTINGS
Function
Jumper/Switch
Position
»
Factory configured - do not alter
W1
Open
»
Parallel port bidirectional
W5
pins 2 & 3 closed

Parallel port unidirectional (printer)
W5
pins 1 & 2 closed
»
Monitor type select color
W6
Closed

Monitor type select monochrome
W6
Open
»
Factory configured - do not alter
W7
Closed
»
Factory configured - do not alter
W8
pins 2 & 3 closed
»
Factory configured - do not alter
W20
pins 2 & 3 closed
»
Factory configured - do not alter
W31
Open
»
Factory configured - do not alter
W40
pins 2 & 3 closed
»
Factory configured - do not alter
W70
pins 2 & 3 closed
»
Factory configured - do not alter
W71
Open
»
Factory configured - do not alter
SW1/2
Closed
»
Factory configured - do not alter
SW1/3
Open
»
Factory configured - do not alter
SW1/4
Open
Note: The locations of the factory confugured jumpers is unidentified.

DRAM CONFIGURATION
Size
Bank 0
Bank 1
Bank 2
Bank 3
4MB
(1) 1M x 36
NONE
NONE
NONE
8MB
(1) 1M x 36
(1) 1M x 36
NONE
NONE
12MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
NONE
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
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
32MB
(1) 4M x 36
(1) 4M x 36
NONE
NONE
36MB
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
40MB
(1) 1M x 36
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
48MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
NONE
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
128KB
(4) 32K x 8
NONE
(2) 16K x 8
256KB
(4) 32K x 8
(4) 32K x 8
(2) 16K x 8

CACHE JUMPER CONFIGURATION
Size
W64
W65
W66
W67
W68
128KB
2 & 3
1 & 2
1 & 2
1 & 2
2 & 3
256KB
2 & 3
2 & 3
2 & 3
2 & 3
2 & 3
Note: pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed
SW1/1
SW1/2
SW1/3
SW1/4
50iMHz
Closed
Factory configured
Factory configured
Factory configured
66iMHz
Open
Factory configured
Factory configured
Factory configured

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SYSTEM XPS 50/66 FS/MDT Motherboard Settings and Configuration

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Processor	80486DX2
Processor Speed	50(internal)/66(internal)MHz
Chip Set	MIC
Max. Onboard DRAM	64MB
Cache	128/256KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	32-bit VESA local bus slots (2), floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2)
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
PS/2 mouse port	CN1	Serial port 2	J16
Floppy drive interface	CN2	Speaker	J33
IDE interface	CN3	Power LED & keylock	J34
External battery	CN4	IDE interface LED	W11
Serial port 1	J12	Reset switch	W12
Parallel port	J15	32-bit VESA Local bus slots	J29 & J30

USER CONFIGURABLE SETTINGS
Function		Jumper/Switch	Position
»	Factory configured - do not alter	W1	Open
»	Parallel port bidirectional	W5	pins 2 & 3 closed
	Parallel port unidirectional (printer)	W5	pins 1 & 2 closed
»	Monitor type select color	W6	Closed
	Monitor type select monochrome	W6	Open
»	Factory configured - do not alter	W7	Closed
»	Factory configured - do not alter	W8	pins 2 & 3 closed
»	Factory configured - do not alter	W20	pins 2 & 3 closed
»	Factory configured - do not alter	W31	Open
»	Factory configured - do not alter	W40	pins 2 & 3 closed
»	Factory configured - do not alter	W70	pins 2 & 3 closed
»	Factory configured - do not alter	W71	Open
»	Factory configured - do not alter	SW1/2	Closed
»	Factory configured - do not alter	SW1/3	Open
»	Factory configured - do not alter	SW1/4	Open
Note: The locations of the factory confugured jumpers is unidentified.

DRAM CONFIGURATION
Size	Bank 0	Bank 1	Bank 2	Bank 3
4MB	(1) 1M x 36	NONE	NONE	NONE
8MB	(1) 1M x 36	(1) 1M x 36	NONE	NONE
12MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	NONE
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
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
32MB	(1) 4M x 36	(1) 4M x 36	NONE	NONE
36MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
40MB	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36
48MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	NONE
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
128KB	(4) 32K x 8	NONE	(2) 16K x 8
256KB	(4) 32K x 8	(4) 32K x 8	(2) 16K x 8

CACHE JUMPER CONFIGURATION
Size	W64	W65	W66	W67	W68
128KB	2 & 3	1 & 2	1 & 2	1 & 2	2 & 3
256KB	2 & 3	2 & 3	2 & 3	2 & 3	2 & 3
Note: pins designated should be in the closed position.

CPU SPEED CONFIGURATION
Speed	SW1/1	SW1/2	SW1/3	SW1/4
50iMHz	Closed	Factory configured	Factory configured	Factory configured
66iMHz	Open	Factory configured	Factory configured	Factory configured