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- POPDOWN - A way to get to the DOS prompt from application programs.
-
- History
- Version 0.5 - February 1987
- Version 0.55 - Feburary 1987
- Version 0.6 - March 1987 - Current Version
-
- Function
- Ability to pop-down to DOS from application programs.
-
- The program will set aside a portion of your memory on start-up as a
- buffer that POPDOWN will maintain for you to allow you to execute
- other programs after popping-down to the DOS prompt from your suspended
- application program. The size of the buffer is determined by a parameter
- when you start POPDOWN.
-
- To return to your suspended application program you would type
- EXIT at the DOS prompt.
-
- Tips and precautions using POPDOWN
-
- Do not load any RESIDENT application in the POPDOWN buffer.
- Doing so will surely destroy the integrity of the DOS memory allocation
- chain. All other resident software must be loaded in the primary DOS
- buffer.
-
- Do not load BASIC in the POPDOWN buffer if BASIC is currently
- suspended in the primary buffer.
-
- If you use DOSXSERV you will need release V0.96.
-
- POPDOWN uses the environment that is active when POPDOWN
- is installed. Therefore for best results you should start POPDOWN
- AFTER you set your system prompt or change your path ect.
-
-
- POPDOWN uses the value of the environment variable COMSPEC to determine
- the path to COMMAND.COM. It will use the value of COMSPEC that
- existed just prior to being loaded for the duration of execution.
- It is therefore suggested that POPDOWN be run AFTER setting the
- COMSPEC environment variable. For optimum use, it is suggested
- the COMSPEC be set to a RAM disk drive. This will cause
- POPDOWN to be run instantaneously with each press of the HOT-KEY.
- There will be no delays waiting for COMMAND.COM to be loaded
- from floppy or hard disk.
-
- ║ POPDOWN now supports Control-Break while popped down. That is
- ║ to say that when you HOT-KEY to DOS from your application program
- ║ Control-Break functions normally.
-
- Example
- (Assume D is a RAM disk) This could be in an AUTOEXEC.BAT file or
- entered at the DOS prompt.
-
- copy a:command.com d:\
- set COMSPEC=D:\COMMAND.COM
- popdown
-
- Example
- C>popdown x 128 <----- starts POPDOWN with CTRL-X as
- HOT KEY SEQUENCE to pop-down.
- POPDOWN buffer size would be 128k.
- (installed message is displayed)
-
-
- C>write <----- Start IBM Writing Assistant.
-
- < While running IBM Writing Assistant >
- < press CTRL-X to return to DOS. >
-
- C> <----- Run another application or DOS command.
- To return to IBM Writing Assistant
- type EXIT at the DOS prompt and press
- enter.
-
-
- For more information and examples run POPDOWN like this:
-
- C>POPDOWN ?
-
-