...because we can't all be on the bleeding edge...





MODEL 3279-16XX PC916SX (REV. 03-92)

NCR CORPORATION

MODEL 3279-16XX PC916SX (REV. 03-92)

MODEL PC 710 KFC

Processor

80386SX (exact location unidentified)

Processor Speed

16MHz

Chip Set

Unidentified

Video Chip Set

None

Maximum Onboard Memory

None

Maximum Video Memory

None

Cache

None

BIOS

Unidentified

Dimensions

Unidentified

I/O Options

None

NPU Options

80387SX

CONNECTIONS

Purpose

Location

Purpose

Location

External battery

J2

Speaker

J4

Power LED & keylock

J3

Auxiliary keyboard connector

J5

USER CONFIGURABLE SETTINGS

Function

Label

Position

Factory configured - do not alter

JP3

Unidentified

Monitor type select color

S1

Left

 

Monitor type select monochrome

S1

Right

Power on frequency speed select 16MHz

S2

Left

 

Power on frequency speed select 8MHz

S2

Right

Wait state select 4 wait states

SW3/1

Off

 

Wait state select 3 wait states

SW3/1

On

Auto switch enabled

SW3/2

Off

 

8MHz mode enabled

SW3/2

On

0 - 512KB enabled

SW3/3

Off

 

0 - 256KB enabled/256KB - 512KB disabled

SW3/3

On

512KB - 1MB enabled

SW3/4

Off

 

512KB - 1MB disabled

SW3/4

On

DRAM MEMORY MAPPING SELECTION

External memory

Mapping area

SW3/5

SW3/6

SW3/7

SW3/8

 

0MB

Not selected

On

On

On

On

0MB

100000H - 16000H

Off

On

On

On

 

1MB

200000H - 26000H

On

Off

On

On

 

2MB

300000H - 36000H

Off

Off

On

On

 

3MB

400000H - 46000H

On

On

Off

On

 

4MB

500000H - 56000H

Off

On

Off

On

 

5MB

600000H - 66000H

On

Off

Off

On

 

6MB

700000H - 76000H

Off

Off

Off

On

 

7MB

800000H - 86000H

On

On

On

Off

 

8MB

900000H - 96000H

Off

On

On

Off

 

9MB

A00000H - A60000H

On

Off

On

Off

 

10MB

B00000H - B60000H

Off

Off

On

Off

 

11MB

C00000H - C60000H

On

On

Off

Off

 

12MB

D00000H - D60000H

Off

On

Off

Off

 

13MB

E00000H - E60000H

On

Off

Off

Off

 

14MB

F00000H - F60000H

Off

Off

Off

Off

Note: The memory is located on the mainboard.

WAITSTATES AT DMA TRANSFERS SELECTION

IOW/MEMR/MEMW

IOR

JP1

JP2

 

250ns

500ns

Pins 2 & 3 closed

Pins 2 & 3 closed

500ns

750ns

Pins 2 & 3 closed

Pins 1 & 2 closed

 

750ns

1000ns

Pins 1 & 2 closed

Pins 2 & 3 closed

 

1000ns

1250ns

Pins 1 & 2 closed

Pins 1 & 2 closed