MODEL 3332 DESKSIDE PC80486AT Motherboard Settings and Configuration

NCR CORPORATION

MODEL 3332 DESKSIDE PC80486AT

Processor
80486SX/80487SX/80486DX/80486DX2
Processor Speed
16/20/25/33/50(internal)/66(internal)MHz
Chip Set
Unidentified
Video Chip Set
Unidentified
Maximum Onboard Memory
64MB
Maximum Video Memory
1MB
Cache
64/256KB
BIOS
Unidentified
Dimensions
330mm x 218mm
I/O Options
Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port
NPU Options
None

CONNECTIONS
Purpose
Location
Purpose
Location
IDE interface LED
J1
Serial port 2
J26
Keylock
J2
Serial port 1
J28
Chassis fan power
J3
Parallel port
J29
Speaker
J7
VGA port
J30
Floppy drive interface
J16
PS/2 mouse port
J31
IDE interface
J17

USER CONFIGURABLE SETTINGS
Function
Label
Position
»
Internal speaker enabled
J7
Pins 1 & 2 closed

Internal speaker disabled
J7
Open

External speaker connected
J7
Pins 2 & 3 closed
»
On board video enabled
SW1/4
Off

On board video disabled
SW1/4
On
»
Password enabled
SW1/5
Off

Password disabled
SW1/5
On
»
Monitor type select color
SW1/6
On

Monitor type select monochrome
SW1/6
Off

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
28MB
(1) 1M x 36
(1) 1M x 36
(1) 1M x 36
(1) 4M x 36
32MB
(1) 4M x 36
(1) 4M x 36
None
None
36MB
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
None
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
52MB
(1) 1M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
64MB
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
(1) 4M x 36
Note: The location of banks 0, 1, 2 & 3 are unidentified.

CACHE CONFIGURATION
Size
Bank 0
Bank 1
TAG
64KB
(4) 8K x 8
(4) 8K x 8
(2) 16K x 4
256KB
(4) 32K x 8
(4) 32K x 8
(2) 16K x 4

CACHE SWITCH CONFIGURATION
Size
SW2/1
SW2/2
SW2/3
SW2/4
SW2/5
SW2/6
SW2/7
SW2/8
None
Off
Off
Off
Off
Off
Off
Off
Off
64KB
On
On
On
On
Off
Off
Off
Off
256KB
Off
Off
Off
Off
On
On
On
On

VIDEO MEMORY CONFIGURATION
Note: The location of the 1MB video memory is unidentified.

CPU SPEED SELECTION
Speed
SW1/1
SW1/2
SW1/3
16MHz
On
On
Off
20MHz
On
Off
On
25MHz
Off
On
On
33MHz
On
On
On
50iMHz
Off
On
On
66iMHz
On
On
On

CPU TYPE SELECTION
Type
SW1/7
80487SX/80486DX/80486DX2 not installed
Off
80487SX/80486DX/80486DX2 installed
On

CPU TYPE SELECTION
Type
SW1/8
80487SX
On
80486DX
Off
80486DX2
Off

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MODEL 3332 DESKSIDE PC80486AT Motherboard Settings and Configuration

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Processor	80486SX/80487SX/80486DX/80486DX2
Processor Speed	16/20/25/33/50(internal)/66(internal)MHz
Chip Set	Unidentified
Video Chip Set	Unidentified
Maximum Onboard Memory	64MB
Maximum Video Memory	1MB
Cache	64/256KB
BIOS	Unidentified
Dimensions	330mm x 218mm
I/O Options	Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port
NPU Options	None

CONNECTIONS
Purpose	Location	Purpose	Location
IDE interface LED	J1	Serial port 2	J26
Keylock	J2	Serial port 1	J28
Chassis fan power	J3	Parallel port	J29
Speaker	J7	VGA port	J30
Floppy drive interface	J16	PS/2 mouse port	J31
IDE interface	J17

USER CONFIGURABLE SETTINGS
Function		Label	Position
»	Internal speaker enabled	J7	Pins 1 & 2 closed
	Internal speaker disabled	J7	Open
	External speaker connected	J7	Pins 2 & 3 closed
»	On board video enabled	SW1/4	Off
	On board video disabled	SW1/4	On
»	Password enabled	SW1/5	Off
	Password disabled	SW1/5	On
»	Monitor type select color	SW1/6	On
	Monitor type select monochrome	SW1/6	Off

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
28MB	(1) 1M x 36	(1) 1M x 36	(1) 1M x 36	(1) 4M x 36
32MB	(1) 4M x 36	(1) 4M x 36	None	None
36MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	None
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
52MB	(1) 1M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
64MB	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36	(1) 4M x 36
Note: The location of banks 0, 1, 2 & 3 are unidentified.

CACHE CONFIGURATION
Size	Bank 0	Bank 1	TAG
64KB	(4) 8K x 8	(4) 8K x 8	(2) 16K x 4
256KB	(4) 32K x 8	(4) 32K x 8	(2) 16K x 4

CACHE SWITCH CONFIGURATION
Size	SW2/1	SW2/2	SW2/3	SW2/4	SW2/5	SW2/6	SW2/7	SW2/8
None	Off	Off	Off	Off	Off	Off	Off	Off
64KB	On	On	On	On	Off	Off	Off	Off
256KB	Off	Off	Off	Off	On	On	On	On

CPU SPEED SELECTION
Speed	SW1/1	SW1/2	SW1/3
16MHz	On	On	Off
20MHz	On	Off	On
25MHz	Off	On	On
33MHz	On	On	On
50iMHz	Off	On	On
66iMHz	On	On	On

CPU TYPE SELECTION
Type	SW1/7
80487SX/80486DX/80486DX2 not installed	Off
80487SX/80486DX/80486DX2 installed	On

CPU TYPE SELECTION
Type	SW1/8
80487SX	On
80486DX	Off
80486DX2	Off