🚀 go-pugleaf

Hamish Seaton [mailto:love_shack@caverock.net.nz] decided to regale us
with
>I've been asked to try and get a rather large and extensively modified
>Turbo Pascal (DOS) program running properly.  It's been locking up
>completely when the program is exited, BUT by doing one of the following
>I can get it to exit happily:
>
>1. run xtree gold before the program is run
>2. don't process the system registry on bootup (F8 on startup then
>choose step-by-step and N to process the reg).
>
>Doing either of these enables the program to run and exited reliably
>until the PC is next rebooted.  I can also
>
>3. set BootGUI=0 in msdos.sys so PC boots into DOS
>
>To confuse things further, there are 3 slightly different versions of
>the program, one of which exited OK without any of the above mods, but
>now locks up with the BootGUI=0 setting, while the other two are now OK.
>
>Any hints as to what I should look for in the program, methods or tools
>for debugging.  It's quite a large app, with some 114 files, ISR's etc.
>
Sounds likely that, as you are using ISR's, one of the original vectors
is not being restored when the program terminates or, if you are
restoring each Interrupt Vector, then a memory overwrite has trashed the
pointer.

-- 
Pedt
Kellemes Karacsonyi Unnepeket (I'm getting in early for y2k)