#: 5442 S10/Tandy CoCo
    22-Jul-90  09:13:56
Sb: #Basic09 help
Fm: ARNOLD BRAUND 72257,3476
To: all

Hi,
     I have a question on the usage of procedure calls in Basic09. I am
currently writing a checkbook program that is larger than 64K when all of the
seperate procedures are added up.  I am using Shell+ v2.1 and gshell+ v1.24
with patches from Kevin's fastgrf.ar.  My system is a Coco3, 512K, with a 20Meg
Hard drive.

     Here is my problem:   I start up the program in a 640 X 192, graphics
window using    chwt -5.  I then start my main procedure. It doesn't matter if
I use   runb checbook   or   checbook.  This main procedure is basically a
"menu" that calls in other procedures. The problem I have observed, though, is
that as the other procedures are called in and then ended, they do NOT get
released in memory. It doesn't take long before I use up my entire 64K work
space. I realize that when a procedure is called, that it eats up memory in
blocks of 8K, but I thought that this memory was freed up when that procedure
ended so that same memory was available for other called procedures.  I can
make everything work fine when I use the    shell "unlink procedure"  command
in my main procedure as the next line following my call to a procedure.
      ie.  run scrprnt    followed by   shell "unlink scrprnt".

     Maybe this IS the correct "fix", but I haven't seen it written anywhere. 
I know that by merging all of the procedures together, I can save on the 8K
usage problem, but all of my procedures added together use up most of the 64K
work space.  I want to get this program working smoothly and properly before I
attempt to upload it here.

                             thanks,
                              Arnie

There are 2 Replies.