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Initial commit of 1.11 source as released by PC Engines

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Original source https://www.pcengines.ch/file/wbios111s.zip
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Steve Howes
2023-07-25 16:17:48 +01:00
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TOOL/ED.TXT
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Calling the editor
------------------
Call ED.COM using
ED [-m=macfile] [file]
File is the (optional) name of the file to be edited. If this file is invalid
or doesn't exist yet, "Disk error" is indicated. If the -m=macfile option is
specified (macfile is the name of the keyboard macro file), the macro file is
read on startup.
On errors the editor expects you to hit the space bar as an acknowledgement.
Some control characters can modify video attributes (if the editor is installed
properly for your screen). Insert the chars using the ^P command:
^B Boldface on
^U Underline on
^N Normal (bold and underline off)
Hard tabs are expanded. As usual, tab positions are at column 9, 17, 25 etc.
The end of the file is displayed by a gray area.
Editor commands
---------------
For many commands function keys can also be used.
^A word left
^C page down
^D character right
^E line up
^F word right
^G delete char right
^H backspace, delete left
^I tabulator (insert a hard tab)
^J jump to symbol = search
Enter word to be searched. The search is case-sensitive.
Cursor jumps to first instance in text (search next: ^L)
^K prefix for block, file and assembler commands
^L repeat previous search (& replace)
^N insert line break
^O prefix for macro commands
^P prefix for entering control chars
(to enter ^_ type ^_^P^_<Enter>)
^Q prefix for jump commands
^R page up
^S character left
^T delete word right
^U cursor line -> middle of the screen
^V toggle insert / overwrite
^W scroll up
^X line down
^Y delete line
^Z scroll down
ESC exit editor - also see file management.
Block operations
----------------
All block operations are line-oriented, i.e. they always treat entire lines.
^KA block = all (entire text)
^KB mark block beg
^KC copy block
^KE mark block end
^KJ append (join) block to file (ignores ^Z)
^KK mark block end
^KN block = nothing
^KR read block
^KV move block
^KW write block
^KY delete block
Quick jump commands
-------------------
^QA Search and replace. Asks for options. Valid options are:
g = global (start from beginning)
n = don't prompt for replacement
u = don't distinguish upper and lower case
w = search whole words only
Valid answers to the prompt are:
y = ok, do replace
n = don't replace this one
* = go ahead, don't ask me any more
Esc = stop it
^QB jump to block beg
^QC jump to text end
^QD jump to line end
^QE jump to block end
^QF search (same options as ^QA)
^QI toggle auto-indent option
^QK jump to block end
^QL undo changes in current line
^QR jump to text beg
^QS jump to line beg
^QY delete to end of line
^QZ delete to beg of line
File management
---------------
When calling ED from DOS a main file may be specified on the command line which
is then read into the text buffer.
Files are written back without query (there is a special command to throw away
changes made to the file). ED does not make .BAK files (the MS-DOS file system
is too damn slow).
The editor can quickly switch between two files: main and include. Both files
must fit into the text buffer (about 64 K) together.
Esc Exit ED
- from main: save main, return to DOS
- from incl: save incl, return to main
^KI Back to the previous include file (name displayed in status line)
^KL Load/change include file
- from main: load new include file
- from incl: save incl, load new include file
^KM Load/change main file
- from main: save main, load new main file
- from incl: save incl, back to main
^KQ Throw away changes (query)
- from main: don't save main, return to DOS
- from incl: don't save incl, return to main
^KS Save current file (manual save)
Should it be impossible to save a file the usual way (disk full etc.), mark the
text with ^KA, write it with ^KW to another disk and exit ED with ^KQ. If you
are prompted for a save filename, but want to throw away the file, enter 'nul'
as filename. DOS will dutifully write the file to the null device.
Function keys
-------------
Function keys can be used for some commands:
up cursor up
down cursor down
left cursor left ^left word left
right cursor right ^right word right
PgUp page up ^PgUp mark block beg
PgDn page down ^PgDn mark block end
Home jump to line beg ^Home jump to text beg
End jump to line end ^End jump to text end
Ins toggle insert/overwrite mode
Del delete char right
^BS delete to end of line
ScrLock Lock cursor line. The cursor will always remain in the same line of the
screen (as far as possible). This is nice for bulk revisions. The
cursor line can be moved with ^W, ^Z and ^U.
Keyboard Macros
---------------
The following keys can be programmed with macros of (nearly) any length (all
together up to 868 bytes, where each keystroke takes 1..2 bytes). Which keys
can be used may also depend on your keyboard driver.
F1..F10
Shift F1..F10
Ctrl F1..F10
Alt F1..F10
Alt A..Z
Alt 1..9,0,-,= (all keys in the number row)
^OL Record keyboard macro
Hit the destination key, then enter the command sequence (which is
executed as usual, so you have visual feedback). Terminate the sequence
with ^Break. Mistakes will also be recorded faithfully and cannot be
edited except by recording the macro again.
Macros can also be used during recording. Nesting is limited to
15 levels, everything beyond is ignored. A macro that calls itself
once will repeat 16 times, if it calls itself twice it will repeat
2^16 times... Macros may be interrupted by ^Break.
^_ This suspends macro execution and lets the user enter data (no macros)
terminated by <Enter>; macro execution will then resume. The user's
<Enter> is ignored: The macro may edit or extend the entry (e.g. add a
default extension to a filename).
^OW Write macros to file
^OR Read macros from file. This automatically executes the Alt-0 macro,
making it possible to "chain" macros.
^OV Update the display. Normally, the display is not updated during macro
execution (resulting in fast execution of macros). This command can be
used to show intermediate results.
Status line
-----------
The editor status is displayed in the top line of the screen:
^K no 3 main + include filename
^K Command prefix. Displayed while entering commands such as ^KB.
n Indicates automatic indentation switched off. Toggle with ^QI.
o Indicates overwrite mode. Toggle with ^V or INS.
3 Indicates cursor position in line.
Editing in the status line is similar to normal editing, but:
- Trailing spaces are not cut off.
- ^A jumps to beg of line
- ^F jumps to end of line
- Esc breaks the command.
- When a default is given, if the first key pressed is a char,
the default is cleared and the char is entered. If the first
key is an editor command, the default can be edited. To insert
something at the beginning of the default, first hit the
cursor left key.