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VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
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**********************************
* USER MANUAL *
**********************************
Table of Contents
-----------------------------------------------------------------
Section Title Page
-----------------------------------------------------------------
1 Overview of VDO.................. 1
2 Advantages of VDO................ 3
3 Disadvantages of VDO............. 3
4 Installation/setup............... 4
5 Operation........................ 6
6 Cursor control................... 7
7 Single keystroke commands........ 8
8 Quick commands................... 9
9 Block commands................... 10
10 Help commands.................... 12
11 Error handling................... 13
12 Future plans..................... 14
Appendices
A Terminal List.................... 15
1
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
1. Overview
VDO (Video Display Oriented) Editor is a small (7k) ASCII
file full screen editor designed for use under CP/M 2.x. It
originally appeared in a BYTE article by Richard Fobes (BYTE 9/82
and 10/82). It then underwent a series of revisions and
modifications by the following firms and individuals:
Spite Software
Bill McTeer
Don Krantz
Mike Rejsa
Don Krantz (again)
This is revision 2.5, a major enhancement of the editor. The
improvements made in this revision include the following:
- Support for terminals not featuring line insert/delete.
- Expanded terminal definitions.
- Default drive logging.
- Default drive directory display.
- Revised menu structure.
- Adjustable help level and help menus.
- Added support for hiliting, for terminals that support it.
- Implemenation of a 128 byte type-ahead buffer.
VDO is a memory based editor - that means that both the
editor and the file being edited reside in memory. With a 64K
CP/M system, that gives you a maximum file size of about 52K.
Since you will probably use this for program source files, that
ought to be plenty. If not, there's always WordStar.
VDO uses a small of standard WordStar keystroke commands.
Where possible the keystrokes to activate a VDO operation are
exactly the same as for WordStar.
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VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
2. Advantages to VDO
VDO's major advantage over WordStar and other screen editors
is its small size - only 7K of disk space is needed, as opposed
to 60+ for WordStar. A minor advantage is VDO's speed - with no
overlay files to swap in and out, VDO seems very fast. And with
the type-ahead buffer you don't have to wait for the display to
catch up with you. Another advantage it now has is the
installation module that allows menu driven terminal
installation. A number of terminals are currently supported (see
appendix A).
3. Disadvantages to VDO
VDO lacks many features found in WordStar. It is a file
editor, not a word processor. However, most of the important
features are implemented, and more are on the drawing board.
Section 11, Future Plans, outlines some of the proposed features
still to be added.
3
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
4. Installation/setup
To get started with VDO, you need to set a few things up
first. This distribution package contains a number of files that
make up VDO v2.5. The steps needed to implement VDO on your
system are listed below.
1. Extract all of the member files from VDO25.LBR, using a
library utility such as NULU, LU, LSWEEP, etc.
2. Unsqueeze all of the files. If you are using NULU or LSWEEP
you can extract and unsqueeze at the same time. See the
respective doc files for details.
3. Rename the resulting files according to the table below.
From To
----------------- -----------------
VDO25.OBJ VDO.COM
VINST11.OBJ VINST.COM
VTERM.DAT VTERM.DAT
VDO25.MAN VDO25.MAN
VDO25.NOT VDO25.NOT
4. VDO as distributed is installed for the Kaypro computers
without hiliting. If this installation fits your needs, skip this
step. To install VDO.COM, type VINST<CR>. This will start the
install module written for the editor. The user is then prompted
for the name of the source file (i.e. VDO.COM) and the name of
the file to write the installed version of the editor to (i.e.
VDONEW.COM). If you enter a <CR> for the second filename the file
will be overwritten. A menu of available terminals is then
displayed, allowing the user to select a terminal to install or
exit the program. If a valid terminal is selected, once the
selection is confirmed the editor will be installed with the new
terminal control codes, the user will be informed and the progam
will terminate.
5. You should now have a copy of VDO ready to run on your
system. Type VDO<CR> to start it up. Once inside the editor, try
various commands, watching the results to ensure that the editor
is properly installed. If it doesn't look right, there are
several possibilities. It may not be installed for the proper
terminal type. Check your owners manual and make sure you have
selected the proper terminal. If it still looks screwy, the
terminal definition may be invalid. If you suspect this, gather
together all the video control information about your terminal
that you can and contact the author via one of the methods listed
on the title page of this document.
6. If you want to change the initial settings of things such
as the help level, insert toggle, etc. here is what you do. Run
up VDO and adjust everything to the way that you want it to
initialize. Then exit VDO. Now type DDT VDO.COM. When DDT stops
4
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
loading and displays it's stats, type G0 or a ^C to exit. Now
type save 27 VDO.COM. You have now created a custom version of
VDO for your use.
5
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
5. Operation of VDO
VDO is started by tying either:
VDO
-or-
VDO d:filename
In the first version, where no filename is specified, VDO
will create a new file when you exit, asking for the filename at
that time. If the second version is used, VDO will attempt to
open the specified file. If no file of the specified name exists,
VDO will display an error message. You may continue from that
point, and the name specified will be used to save the new file.
If the file specified can be located, VDO will load the file and
place the cursor at the start of the file. In any of the the
three situations, you will be ready to start editing the file.
VDO's commands are broken into four major groups: Cursor
Control, Quick Commands, Block Commands and Help Commands.
Several minor commands are also implemented. Anything not a
control character which can't be interpreted as a command will be
entered into the file as text.
All input to the editor, with the exception of pause
prompts, is buffered in a 128 character type-ahead buffer. This
means that you don't have to wait for the editor or display to
catch up to you, you can just keep typing. Although I am not a
touch-typist, I can get going at a fair rate and I have ran into
no serious problem over-running the buffer. Characters may be
lost during disk reads/writes, due to the fact that the buffer
routines are not true interupts.
6
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
6. Cursor Control
The standard WordStar cursor controls ^A, ^S, ^D, ^F, ^E,
^X, ^R, ^C are all implemeted, and all work pretty much as you'd
expect. Definitions are:
^S move cursor a character to the left
^D move cursor a character to the right
^A move cursor a word to the left
^F move cursor a word to the right
^E move cursor up a line
^X move cursor down a line
^R move a page (usually about 18 lines) up
^C move cursor a page down
7
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
7. Single Keystroke Commands
These commands are all activated by single keystrokes.
RETURN and TAB are both accepted at any time, and entered into
the file as text.
^L repeats last ^QF or ^QA (see Quick commands), using same
options.
^P Enter a printer code - The next character typed will be
entered into the text as-is, even if it normally has other
significance (e.g. ^P^L will enter a ^L into the text file
rather than doing a "repeat find" operation).
^V toggle Insert mode on or off
^T delete one word to the right - how this works is: first,
delete character under cursor. Next delete following
displayable characters (doesn't include control characters
displayed). Next, delete following white space (blanks and
control characters) except for tabs or end-of-lines.
^Y delete entire line cursor is on
^G delete character right at (under) cursor
DEL delete character left of cursor
When moving the cursor, the display will adjust to the
cursor position. You can't move the cursor off the screen
accidentally. If a line is too wide to fit on the screen, it will
scroll left automatically when the cursor travels off the left
end of the screen. The column count on the status line will
reflect the correct logical column at all times. Control
characters do not count as occupying a logical column.
8
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
8. Quick Commands
The Quick Commands are all accessed by typing a Control-Q.
If in Normal or Novice level, a menu will display showing Quick
options. The Quick commands, with one exception, all involve
moving the cursor to a different position in the text quickly.
^QR places the cursor at the start of the text.
^QC places the cursor at the bottom of the text.
^QB places the cursor at the marker for the beginning of the
block, if this marker is set (see ^K B).
^QK places the cursor at the marker for the end of the block, if
the marker is set (see ^K K).
^QF allows you to specify a string to search for in the text.
This string may not include carriage returns. After
selecting 'F', VDO will ask for the string to look for (the
"target" string). Type in the string, then press RETURN. VDO
will next ask if you wish to ignore upper and lower case
differences. If you do not press "Y", VDO will look for a
string capitalized exactly as you capitalized the target
string. Pressing a "Y", "y", or "^Y" will cause VDO to
treat upper and lower case letters as exactly identical.
Next, VDO will ask if you wish to look backwards from
the cursor position. If you do not answer "Y", "y", or "^Y",
VDO will look forward from the cursor postion.
When VDO finds the target string in the text, it will
move the cursor to that position and display the surrounding
text. If the string is not found, an error message will
display and the cursor will be returned to the starting
position.
^QA Find-and-replace. Works just like ^QA, except when the
string is found, a string of your choice is substituted for
the target string.
Note: Strings containing Carriage Returns may not be
searched for, but any other control character may be
included in the target string. (both ^QA and ^QF)
^QT Set tab stops. VDO allows tabs to be set to 8, 2, 4, or 16,
with the default at 8. This is a dynamic process, and is
used mainly for C, Ada, and Pascal programmers for variable
indentations.
9
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
9. Block Commands
The block commands are all accessed by typing a Control-K.
If in Normal or Novice level, a menu will appear with second-
keystroke options. Not all Control-K commands necessarily relate
to marked blocks. Block commands mainly operate on large portions
of the text. A "Block" is a section of the text file begining
with the Block Start marker, and ending with the Block End
marker, which you may set at any point in the text.
Attempting an operation which requires the blocks to be
marked will generate an error if the blocks aren't marked
properly - i.e. the beginning or end not marked, or the block end
marker prior to the block start marker.
^KB Set block start marker.
^KK Set block end marker.
^KC Copy marked block to the cursor position. Block remains
marked at its original position, a copy of the block appears
at the cursor, the cursor is positioned at the start of the
copy.
^KV Move marked block to the cursor position. The marked block
is removed from its position and appears at the cursor. The
markers disappear and the cursor is placed at the start of
the moved material. A block can't be moved "into itself".
^KY Delete marked block. The marked block is removed from the
file and the cursor remains where it is.
^KW Writes the marked block into a file of its own. You specify
the new filename.
^KR Reads a disk file into the current file at the cursor
position. You specify the filename.
^KP Print the file. You will be asked for printer setup codes,
which are entered as you wish them sent. Example: You wish
to send ESCAPE B to the printer prior to printing. Press the
ESCAPE key, then the B key, then RETURN. Note: You will not
be able to send any codes for which keystroke equivalents
don't exist, and you will not be able to send the RETURN
code (ASCII CR, hex 0DH, decimal 13).
^KZ Zaps (erases) current file from memory (does not affect any
disk versions of the file), and erases the filename.
^KX End of Edit. Saves the file under the current name and
creates a backup file if a version is on disk already. If
VDO was invoked without a filename, or if you ZAPped the
file, VDO will ask for a new filename.
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VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
^KQ Abandon file - any changes to the file (unless you did a ^KS
are abandoned. Any disk versions of the current file are not
affected.
^KS Save and continue. Saves the file as it appears in memory,
and continues the editing session. Used in case of failure.
^KF Displays a directory of the currently logged drive/user
area.
^KL Change logged drive. Upon selection, the currently logged
drive is displayed and the user is prompted for the new
drive to log.
To change disks, remove the old diskette, insert the new one, do
a ^KL and log the new diskette. VDO resets the disk system before
writing files, so the disk may changed between reading a file in
and saving a file, or in case of system failure (e.g. DISK FULL,
BAD SECTOR).
11
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
10. Help commands
The help commands are accessed by typing a Control-J. If in
Normal or Novice level, a menu will appear with second-keystroke
options. From this point all of the on-line information is
available through various menus. The help level may also be
adjusted.
^JH Set help level. The current help level and definitions are
displayed. The user is then prompted for the help level desired.
The editor as distributed defaults to Novice on startup. In this
mode all menus, including basic cursor control info., are
displayed whenever an extended command is initiated (^K, ^Q, ^J).
In Normal mode the basic cursor control info. is suppressed. In
Expert mode all menus are suppressed. The menus are still
available through the help comamnds, ^J, of course.
^JK Display Block Command menu.
^JQ Display Quick Command menu.
^JM Display basic cursor control menu.
^JJ Display help function menu.
12
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
11. Error Handling
VDO has 9 editing errors which may occur, which clear the
screen, display a message, and wait for you to press the ESACPE
key to clear the error display. The messages are:
FILE TOO BIG - occurs when loading a file to start the editing
session or using ^KR. In the case of ^KR, none of the file is
retained: the text remains as it was before you attempted ^KR.
This message may also occur when attempting to insert text after
the memory size of your system is exceeded.
INVALID KEY - occurs when an entry contains an unexpected key.
Can happen during text entry when an undefined control character
is typed (e.g. ^O), or when entering filenames if bogus
characters are entered as part of the filename (e.g. "space") or
if the filename can't be properly formed.
INPUT/OUTPUT FAILURE - occurs when a requested file can't be
found during initial load or ^KR, or when any system failure
occurs (e.g. DIRECTORY FULL, BAD SECTOR, R/O). Can also occur
when trying to read an empty file.
STRING NOT FOUND - occurs during find or find-and-replace
operations if the target string can't be located.
DISK FULL - self explanatory. You may insert another disk and try
again.
BLOCK NOT MARKED - occurs when attempting a block operation which
require the block to be marked if both the block start and block
end markers aren't marked or if the end is prior to the start of
the block.
BLOCK STRADDLES CURSOR - occurs when trying to move a block into
itself. The cursor can't be inside the block when copying or
moving a block.
ILLEGAL TAB STOP - occurs when setting dynamic tab stops, if you
do not enter an valid tab stop number (2, 4, 8, 16 are the valid
numbers).
13
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
12. Future Plans
Well, v2.5 saw several goals realized, among them expanded
terminal defs., initial support of hiliting, directory functions.
There are still more improvements planned. Some of the ones
slated for the next version at this time are:
- Macro capability.
- A deletion storage buffer (to retract mistakes).
- Expanded use of hiliting and underlining.
- Place markers.
- Expanded installation procedure, to allow a more elegant
method of creating custom versions.
- Displayable block markers.
Suggestions are welcome and should be directed to me via one
of the systems listed below. VDO is a fine editor and should
prove to be a useful addition to anyones library. Enjoy!
James Whorton
04/28/85
Suggestions, complaints, comments should be directed to:
OBBS Remote System
(402) 346-4206
300/1200 baud, 11:00 PM - 4:00 PM weekdays, 24 hours weekends
To: Sysop
or
DRBBS
(402) 896-3537
300/1200 24 hours
To: James Whorton
14
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
A. Terminal List
The following terminals are supported by this distribution
package:
Kaypro, no hilite Kaypro with hilite
Osborne 1 Hazeltine 1500
Hazeltine Esprit Lear-Siegler ADM-20
Lear-Siegler ADM-31 Televideo 912/920/92
Morrow MDT-20 Zenith
Liberty Wyse WY-100/200/300
Epson Geneva Osborne Exec
ADDS 20/25/30 ADDS 40/60
ADDS Viewpoint-1A Qume
Soroc 120/Apple CP/M Soroc new models
Visual 200
Future revisions will support a larger selection of
terminals. Custom terminal defs. are also avail. If interested,
contact the author.
End of File
15
DRBBS
(402) 896-3537
300/1200 24 hours
To: James Whorton
14
VDO vers. 2.5 04/28/85 (c)1985 James H. Whorton
A. Terminal List
The following terminals are supported by this distribution
package:
Kaypro, no hilite Kaypro with hilite
Osborne 1 Hazeltine 1500
Hazeltine Esprit Lear-Siegler ADM-20
Lear-Siegler ADM-31 Televideo 912/920/92
Morrow MDT-20 Zenith
Liberty Wyse WY-100/200/300
Epson Geneva Osborne Exec
ADDS 20/25/30 ADDS 40/60
ADDS Viewpoint-1A Qume
Soroc 120/Apple CP/M Soroc new models
Visual 200
Future revisions will support a larger selection of
terminals. Custom terminal defs. are also avail. If interested,
contact the author.
End of File
15
James H. Whorton
A. Terminal List
The following terminals are supported by this distribution
package:
Kaypro, no hilite Kaypro with hilite
Osborne 1 Hazeltine 1500
Hazeltine Esprit Lear-Siegler ADM-20
Lear-Siegler ADM-31 Televideo 912/920/92
Morrow MDT-20 Zenith
Liberty Wyse WY-100/200/300
Epson Geneva Osborne Exec
ADDS 20/25/30 ADDS 40/60
ADDS Viewpoint-1A Qume
Soroc 120/Apple CP/M Soroc new models
Visual 200
Future revisions will support a larger selection of
terminals. Custom terminal defs. are also avail. If interested,
contact the author.
End of File
15
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