6530 Programmer's Guide

Conversational Mode Operation
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6530 Programmer’s Guide
proccode1 is one of the following ASCII characters that specifies
the child process return code:
proccode2 and proccode3 are ASCII characters in the range of
20H to 2FH whose ASCII codes offset by 1FH represent the nibble
values for the child process exit code. The most significant nibble is
represented by proccode2, and the least significant nibble is
represented by proccode3.
CR is a control character (0DH) that terminates the message.
See the programmer’s guide for your operating system for more
information.
Disconnect Modem (Esc f)
The Esc f sequence forces the Data Terminal Ready line (CD) into a low
state for three seconds. This causes most modems to disconnect and
terminate the connection.
General Operations This group of control codes and escape sequences performs a variety of
terminal functions.
Bell (BEL)
The BEL control character (07H) causes the 6530 to sound an audible
alarm. It is typically used to alert the user of some action, such as an
error.
Delay One Second (Esc @)
The Esc @ sequence causes the 6530 to stop processing the input stream
for approximately one second. At the end of the delay, normal processing
continues.
space (20H) = terminate/abort (normal termination)
! (21H) = Shift-break
“ (22H) = fatal error (critical device error)
# (23H) = terminate and stay resident (KEEP process)