THE APPLE ][ SCREEN EDITOR A-DASH

Copyright (C) by H. OHTA, February 1985
http://ohta.html.xdomain.jp/

INTRODUCTION

APPLE ][ SCREEN EDITOR A-DASH is a very powerful screen-editor utility which
allows you to input or modify a program easily in many languages.  With it,
you can insert a character and delete a character in a line, and Apple ][ 
gets one line if only you press a <RETURN> key in any position of the line.
Moreover, you are able to use twenty-three programmable function keys which
can maximally contain eleven characters.

The SCREEN EDITOR A-DASH requires an Apple ][ or Apple ][ plus with 64K RAM
memory (Language Card) or an Apple IIe or Apple //c and at least one Disk ][.
It is available in Apple soft, Apple soft ][, Apple ][ system monitor, Apple
][ mini-assembler and most language or editor which operates under Apple ][
system monitor and DOS 3.3, for example GAME APPLE ][.

SCREEN EDITOR A-DASH consists of one EXEC file, two 6502 machine language
files and one data file.  Two machine language files are also supplied as the
source list of DOS TOOL KIT 6502 ASSEMBLER.


CAUTION

Do not use INIT DOS command after SCREEN EDITOR A-DASH operated.  SCREEN
EDITOR A-DASH destroyes a part of the DOS boot routine, $B600-$B651, and
makes use of the location as a window to Language Card.

Generally, SCREEN EDITOR A-DASH will not operate with another program which
uses CSW locations ($36 and $37) and KSW locations ($38 and $39).
However, 'PR# X' command which transfers outputs to slot X is available with
SCREEN EDITOR A-DASH.  Therefore, you can use a printer when SCREEN EDITOR
A-DASH is operating.  Under SCREEN EDITOR A-DASH, CH location, $24, may
rarely not indicate the true cursor horizontal position, but most program
which uses CH location will be executed correctly with SCREEN EDITOR A-DASH.


THE APPLE ][ SCREEN EDITOR A-DASH REFERENCE CARD

LEFT  ARROW : moves the cursor to the left.
RIGHT ARROW : moves the cursor to the right.
CTRL+K      : moves the cursor up.   (UP   ARROW for Apple ][e)
CTRL+J      : moves the cursor down. (DOWN ARROW for Apple ][e)

<RETURN>    : sends the cursor line to Apple ][.   'line' implies not
              one line on the screen,  but one line in the text.  You
              may press <RETURN> in any position of the line.

CTRL+D      : deletes one character at the cursor position  and moves
              following characters in the cursor line  to the left by
              one column.
CTRL+I      : brings you  the insert mode  when you are in the normal
              mode, or returns you to the normal mode.  In the insert
              mode, the character you press is inserted at the cursor
              position after the character at the cursor position and 
              following characters  in the cursor line  are moved  to
              the right  by one column.   Pressing <RETURN> key  will
              allow you to return to the normal mode.
CTRL+N      : After  pressing  CTRL+N,  Apple ][  will  display CTRL-
              characters  in  inverse  video.   To cancel  this mode,
              press  CTRL+N  again.   The next  prompting  will  also
              cancel this mode automatically.
  
CTRL+X      : cancels the present line.
  
CTRL+R      : displays '['.
CTRL+F      : displays '\'.
CTRL+V      : displays '_'.

ESC-]       : takes you to Apple ][ system monitor.
              (']' is SHIFT+M)

ESC-@       : moves  the cursor  to  the  home  position  and  clears
              the screen.
ESC-A       : clears  from the cursor position  to end  of the cursor 
              line.
ESC-B       : clears from the cursor position to end of the screen.

ESC-C       : is the first programmable function key.  (from ESC-C
ESC-Y       : is the last  programmable function key.   to   ESC-Y)
  
ESC-Z       : allows you  to set  a programmable  function key.   For
              example,  type  'R:RUN', <CTRL+@>  and  <RETURN>  after 
              typing <ESC-Z>,  then ESC-R  will become  equivalent to
              pressing  'RUN'  and  <RETURN>.   That is,  <CTRL+@> is
              replaced by <RETURN>.
ESC-^       : displays the set of current function keys.
              ('^' is SHIFT+N)
  
ESC-<number>: locates the cursor at the left side of the line that is
              <number>*2  lines down  on the screen.  The top line is
              line 0.  (from ESC-0 to ESC-9)
ESC-*       : locates the cursor at the left side of the 20th line.
ESC-+       : locates the cursor at the left side of the 22th line.
  
ESC-<CTRL+A>: displays 'A'  in inverse video.    SCREEN EDITOR A-DASH
              gets it as <CTRL+A>.             (From CTRL+A
ESC-<CTRL+_>: displays '_' in inverse video.    to   CTRL+_)
ESC-' '     : displays ' ' in inverse video.   Usually, SCREEN EDITOR
              A-DASH  removes the first spaces and the last spaces of
              the cursor line, but the inverse space is not removed.

<SPACE>     : brings you  to the stop-list  mode  which allows you to
              introduce a pause into outputs or listings.   To escape
              the pause,  press any key.   To press <SPACE> key again 
              allows you  to escape the pause  and  to still stay  in
              this mode.

APPENDING TWO LINES and INVERSE SCROLL IN THE INSERT MODE are also
features of SCREEN EDITOR A-DASH.  SCREEN EDITOR A-DASH takes characters
between the position where a cursor appeared in the cursor line at the first
prompting and the end position of the line.  Therefore, characters you
pressed before the first prompting position are not sent to Apple ][.

When you have pressed <RESET> key and found yourself in Apple ][ system
monitor, in the case of Apple ][ standard, typing '3D0G' takes you to SCREEN
EDITOR A-DASH again.