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MODEL 3278-XXXX PC710/3392

NCR CORPORATION

MODEL 3278-XXXX PC710/3392

Processor

80286 (exact location unidentified)

Processor Speed

6/10MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

640KB (on mainboard), (16MB on external memory card)

Maximum Video Memory

None

Cache

None

BIOS

Unidentified

Dimensions

Unidentified

I/O Options

Expansion slot

NPU Options

80287 (exact location unidentified)

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J2

Auxiliary keyboard connector

J5

Keylock

J3

Expansion slot

JM1

Volume control

J4

   

USER CONFIGURABLE SETTINGS

Function

Label

Position

BIOS type select 32KB

J1

Pins 3 & 6, 4 & 5 closed

 

BIOS type select 16KB

J1

Pins 1 & 8, 2 & 7 closed

Wait state select 1 wait state

JP1

Pins 1 & 2 closed

 

Wait state select 0 wait states

JP1

Pins 2 & 3 closed

10MHz CPU speed enabled

JP2

Pins 1 & 2 closed

 

10MHz CPU speed disabled

JP2

Pins 2 & 3 closed

Memory expansion card installed

JP5

Pins 1 & 2 closed

 

Memory expansion card not installed

JP5

Pins 2 & 3 closed

 

Monitor type select graphics display

S1

Left

 

Monitor type select alphanumeric display

S1

Right

Power on speed select 10MHz

S2

Pins 1 & 2 closed

 

Power on speed select 6MHz

S2

Pins 2 & 3 closed

DRAM CONFIGURATION

Note: The location of the memory is unidentified. Board accepts 256KB or 512KB memory.

DRAM JUMPER CONFIGURATION

Size

JP3

256KB

Pins 2 & 3 closed

512KB

Pins 1 & 2 closed

DRAM JUMPER CONFIGURATION

Setting

JP4

All onboard memory enabled

Pins 1 & 2 closed

All onboard memory disabled

Pins 2 & 3 closed