NCR 8250

This NCR 8250 POS system was donated by Ames Department Stores in November of 2002.

From the labels it looks like the processor chassis is a model 2520-0090.

The Processor-1 board contains four Texas Instruments 74181 bit-slice ALU chips so this is a 16-bit processor.

The processor is at the top, a single casette drive in the middlem and a removable disk drive at the bottom.

The system label from the back of the processor chassis.

The processor chassis backplane.

The processor chassis boards.

From left to right:

Self Refreshing Memory Array

Self Refreshing Memory Array

Memory Interface

Empty

Processor 1

Processor 2

Processor 3

Processor 4

Empty

Clock

Empty

Casette-Data Interface Logic

Casette Transport Interface Logic

Int Disk Controller A

Int Disk Controller B

Int Disk Controller A

Int Disk Controller B

Multi-Chan Comm Adptr

Empty

GPITS Comm Adapter

Empty

GPITS Comm Adapter

Empty

Unknown Board

Self Refreshing Memory Array. There are two of these in the system.

Memory Interface.

Processor 1.