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2CDPS.CDP
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1990-07-30
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Two CDPs At Once
----------------
You can run two copies of CDP at the same time!!
The 2nd copy of CDP reverses its right-left orientation of the screen
from the first one, and uses the two hot keys that the 1st one does not.
For (a good) example, just do:
>SET CDPSWAP=E ; so that the CDPs will swap on disk E:
; (not needed if you have enough EMS)
; (& if you have no E:, C: or D: will work)
; Without this statement, EMS or C: is used
; by default. It is best to use a small
; disk partition (or a ram disk) that is not
; very active for the swapping. This prevents
; CDP from having to reload disk usage
; information because of its own swapping.
; (Note: that situation occurs infrequently
; anyway, since the invisible CDP swap files
; normally remain a constant size in a fixed
; disk area).
>CDP +C ; after CDP comes up, hit ^Q to make it go resident
Then do
>CDP +D. ; the +s make sure CDP comes up on the proper disk
(If you have the shareware version that goes
resident and does not come up immediately, you do not need to bring up the
first one before running the second one. Similarly, if you did CDP with no +,
you may install the second one before bothering to bring up the first.
Thus, you may install two copies of CDP simultaneously in a batch file with
no problems. It also does not matter which of the two copies you actually
bring up first.)
Both CDPs will go resident. The first logged to disk C, and the
second to disk D. Either one may be brought up by hotkey over top of the
other, in any order.
If you are using the default hotkeys (not changed by CDPRENAM),
the first CDP will respond to Lshift-Lshift and Rshift-Rshift (to come
up in the currrent CDP-logged directory or current DOS-logged directory).
The second CDP will respond to Ctrl-Ctrl and Alt-Alt in the same fashion.
Whatever two hotkeys you have assigned to the first CDP, the second one
will use the other two. You must use the "left" hot keys (lshift-lshift for
the 1st CDP and ctrl-ctrl for the 2nd) to bring up CDP on the disk indicated
on the command line; rshift-rshift or alt-alt come up in the current DOS
directory, whichever disk it may be on.
Now, when you wish to work on disk D after working on Disk C,
you do not need to LOG from disk C to disk D. Just hit the hotkey of the CDP
that is logged to disk D. This saves both the time of logging, and the
loading of information on disk D that would otherwise be neccessary. The
copy of CDP that is logged to disk D already has that information! And
can pop up instantly!!
Also, if your disks C: and D: are actually separate partitions of
the same physical disk, the CDP on C: will let the CDP on D: know that
writes on C: do not affect the information already held by the copy logged
to D:. And vice-versa. (At the low level that CDP operates, a single copy
of CDP knows only that something written by some program other than CDP has
written on a PHYSICAL disk -- it cannot distinguish disk C: from D: unless
CDP itself is doing the writing).
This enables you to work on your disks faster than ever! Previously,
if you used CDP for moving, copying, etc., on two disks; then you had to
relog from one disk to the other, necessitating reloading the directory of
the newly logged-to disk. This is no longer necessary. The second copy of CDP
is already there and ready for instant use on the second disk!
One note of caution. When removing CDP from memory, you must remove
the second one first!
Also remember, because it can be confusing, that if one CDP is
already up (& showing on the monitor), and you bring up the other one via
its hotkey; then when you take the 2nd one down, the one that was previously
up will come up again automatically; and you must also do a ctrl-Q or QUIT
to make it go down and ultimately get back to the DOS or application level.