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MODEL 3332 DESKSIDE PC80486AT

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