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Mega CD-ROM 1
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MISCUTL
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RECALL.ZIP
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RECALL.DOC
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1984-11-26
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6KB
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144 lines
RECALL g.r.a.m. Associates RECALL
Purpose: Recall permits the user to retrieve any one of up to 50
unique DOS commands previously issued by the user. Once
retrieved, the command may be executed as is or modified by
the user via the normal DOS line editing keys.
Usage: RECALL [-qb?]
-q Suppresses the initial help screen when Recall
is loaded.
-b Suppresses the loading and the end-of-buffer
bells.
-? Produces a help screen without loading Recall.
Operation: F10 - recall the next oldest command.
Alt-F10 - recall the next newest command.
Shift-F10 - toggle the recall feature on and off.
Note: Attempts to recall beyond the first command issued (or the
last command) are accompanied by a chirp (the end-of-buffer
bell). Recall will subsequently wrap around to the last
(first) command.
Examples: Although the most meaningful examples will occur quite
naturally with daily use, the following examples should help
get things started.
1) The goal is to get before and after printouts of the
tabular data file mywealth.dat as produced by a BASIC program
myprog.bas. (It is assumed that the table requires the
printer to be in 132 column mode for a readable printout and
further that BASIC resets the printer.)
Keystrokes DOS screen Comments
========== ========== ========
1-Enter com- A>dir my*.* List files
2- mands as A>mode lpt1:132 Set printer
3- shown after A>copy mywealth.dat prn: Print file
4- DOS prompt. A>basic myprog Run program
5-F10, A>\
F10,F10 A>mode lpt1:132 Reset printer
6-F10, A>\
F10,F10 A>copy mywealth.dat prn: Print new file
2) Sometimes a rapid fire trigger finger will strike key F10
too often, thus overrunning the DOS command. In such a case
the Alt-F10 combination may be used to return to the missed
command.
Keystrokes DOS screen Comments
========== ========== ========
... See example 1
4-Enter as shown A>basic myprog Run program
5-F10, A>\
F10,F10,F10 A>dir my*.* Oops!
RECALL V2.10 Page 1
RECALL g.r.a.m. Associates RECALL
6-Alt-F10 A>\
A>mode lpt1:132 Got it!
7-F10, A>\
F10,F10 A>copy mywealth.dat prn: Print new file
Caveats:
- The DOS type ahead feature is disabled when using F10.
- Recall will not work concurrently with FileCommand by IBM
while it is attached to DOS.
- Recall may fail if the total memory is changed to a non-4K
multiple.
- No known bugs.
Technical: The motivation for Recall was to provide a natural
extension of the DOS F3 key which restored only the very last
DOS command executed. When first run, Recall attaches itself
to DOS and chains itself onto the keyboard interrupt vector
thus becoming poised to sense all F10, Alt-F10, Shift-F10 and
other related keystrokes. To prevent interference with other
programs which use the function keys, Recall intercepts the
DOS function calling mechanism and verifies that the user is
at the DOS prompt level before processing any keystrokes.
Moreover, Recall prevents multiple copies of itself from
occupying memory by sensing its existence as an extension of
DOS. Recall reduces available memory by 8016 bytes.
Only the following versions of PC-DOS are currently
supported: V1.1, V2.0, V2.1. Support for any other IBM and
compatible versions of DOS will correspond to interest and
availability to the authors.
It is recommended that the loading of Recall be incor-
porated into the boot-up procedure (autoexec.bat).
User Supported Software
If you have used this program and found it of value,
your contribution ($10 suggested) will be appreciated.
Regardless of whether you make a contribution, you are
encouraged to copy and share this program. Users
sending in a contribution of $10 or more will be
entitled to a free update and notification of other
utilities as they become available.
Send all correspondence to:
G.R.A.M. Associates
User Supported Software
450 N. Jordan Street
Allentown, Pa. 18102
RECALL V2.10 Page 2
This disk copy was originally provided by "The Public Library",
the software library of the Houston Area League of PC Users.
Programs are available from the Public Library at $2 per disk
on user-provided disks. To get a listing of the disks in the
Public Library, send a self-addressed, stamped envelope to
Nelson Ford, P.O.Box 61565, Houston, TX 77208.