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RCA Spectra 70 Training Manual page 8

System

Reference manual - 260 pages

represent, in the unpacked format, one alphabetic

or numeric character, or two numeric digits in the

packed format. Data is represented in HSM in the

Extended Binary-Coded-Decimal Interchange Code

(EBCDIC) .

INPUT /OUTPUT

The RCA

70/25

communicates with peripheral

devices through eight I/O channels.

Each peripheral device contains its own control

electronics in order to transmit to the processor

the status of the device, and any error conditions

generated by an I/O command.

Each channel is a separate simultaneous mode, allow-

ing execution overlap with other channels and the

processor.

0 termination interrupt is included

in the system to facilitate efficient use of these

powerful overlap capabilities.

Table of Contents

RCA 70/46 Reference Manual 260 pages

Spectra 70/25