NCR CORPORATION

MODEL 3230

Processor

80486SX/486Overdrive/80487SX/80486DX/486Overdrive/80486DX2

Processor Speed

25/33/50(internal)/66(internal)MHz

Chip Set

Unidentified

Video Chip Set

Unidentified

Maximum Onboard Memory

32MB

Maximum Video Memory

1MB

Cache

Unidentified

BIOS

Unidentified

Dimensions

254mm x 218mm

I/O Options

Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), VGA port, riser slot

NPU Options

None

CONNECTIONS

Purpose

Location

Purpose

Location

Serial port 2

J2

IDE interface

J11

Serial port 1

J3

Front panel LEDs

J15

Parallel port

J4

Cache memory connector

P1

VGA port

J5

Floppy drive interface

P9

PS/2 mouse port

J6

Riser slot

SL1

USER CONFIGURABLE SETTINGS

Function

Label

Position

 

Jumper not used

J16

N/A

 

Password normal operation

RK1

Open

 

Password clear

RK1

Closed

 

On board video enabled

SW1/1

On

 

On board video disabled

SW1/1

Off

 

Monitor type select color

SW1/2

On

 

Monitor type select monochrome

SW1/2

Off

DRAM CONFIGURATION

Size

Bank 0

Bank 1

4MB

(4) 1M x 9

None

8MB

(4) 1M x 9

(4) 1M x 9

16MB

(4) 4M x 9

None

20MB

(4) 4M x 9

(4) 1M x 9

32MB

(4) 4M x 9

(4) 4M x 9

VIDEO MEMORY CONFIGURATION

Note: Board accepts 512KB/1MB video memory. The chip sizes and bank location are unidentified.

CPU TYPE SELECTION

Type

SW1/3

SW1/4

80486SX

On

Off

486SX Overdrive

Off

Off

80487SX

Off

Off

80486DX

Off

On

486DX Overdrive

On

Off

80486DX2

Off

On