6530 Programmer's Guide

Overview
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6530 Programmer’s Guide
Switch from block to conversational mode
Blank fills all lines in display memory.
Sets the cursor address to row1, column 1, and displays the first 24
lines of memory on the screen.
Clears all horizontal tab stops.
Sets the video prior condition register to normal video.
Clears the message area in the message/status line and displays
CONV in the status area.
Unlocks the keyboard.
Terminal Reset
A PC6530 user can perform a reset from the keyboard. The 6530
supports three types of reset, allowing different levels of recovery from
errors.
Soft Reset A soft reset is typically used to unlock the keyboard when it becomes
accidentally locked by the application. The soft reset function performs
the following functions:
Sounds the bell.
Unlocks the keyboard (unless page 0 is displayed).
Terminates any escape sequence in progress.
Flushes the Aux1 print buffer.
Resets the SI/SO state (that is shifts into the G0 character set).
Erases any error message in the error line and restores the message/
status line.
Turns off character insert mode.
The soft reset function restarts the 6530 from its current state and
does not alter or erase any part of display memory. The user can
invoke a soft reset with the Ctrl-Backspace keys.
Program Reset A program reset can be used to abort a host application program. The
program reset clears display memory and restarts the 6530. The user can
invoke a program reset with the Alt-Backspace keys.