Alternate Main Processor Board - NCR PC4I Technical Reference

SYSTEM OVERVIEW
ALTEDlTE MlD PROCESSOR BOA.RD
It is possible that your NCR PERSONAL COMPUTER is
supplied with an Alternate Main Processor Board. This
board makes more extended use of VLSI components. The
layout of this board is shown in Figure 1.16.
Asynchronous
Serial I /0
Coprocessor
Programmable
lntervel Timer
Flexible Disk
Programmable Bus Dri\111 Cnntroller
lnterupt Controller Arbitration
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Bank 1 Bank 2 Bank 3
RAM
Bank4
Figure 1.16 Alternate Main ProcesBGr Board
1-26
JPS
SW1
SWA