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From: guardian@laidbak.UUCP (Harry Skelton)
Newsgroups: comp.lang.c
Subject: Re: Turbo C and TSR's
Message-ID: <1082@laidbak.UUCP>
Date: Wed, 1-Jul-87 10:04:58 EDT
Article-I.D.: laidbak.1082
Posted: Wed Jul  1 10:04:58 1987
Date-Received: Sat, 4-Jul-87 03:27:47 EDT
References: <1041@killer.UUCP>
Reply-To: guardian@laidbak.UUCP (Harry Skelton(E))
Followup-To: 1041@killer.UUCP
Organization: LAI Chicago
Lines: 44
Keywords: TSR Turbo C
Summary: Boardland....another glitch...

In article <1041@killer.UUCP> toma@killer.UUCP (Tom Armistead) writes:
>
>One complaint:
>    I don't like the way the inline assembly stuff works, you must
>    have MASM (3.0 or greater) to use this feature. I'll be damned

You could download WASM to do your assembler or the new MASM.  Check a few
chicago BBS's for it (that's where I got my copy).  FREE!!


>
>One question:
>    Has anyone written any TSR's in Turbo C, they give you this
>    nice function called keep() for terminatiing and staying
>    resident, but, you must give keep() the number of paragraphs
>    of memory used by you pgm and they don't document how to get
>    that value. I called Borland's tech supp. and they don't really
>Tom Armistead

Borland has a support group to handle the calls so they could not answer you
fully.  I would first check a few things.  First, do you (m)alloc memory? If so
you'll have to just buffer your own.  You could do a malloc, get the address 
and then de-(m)alloc memory, take the address and set it to the next paragraph.
give dos the paragraph to use as a next loader and int27 or whatever out of
your program.  For now, don't trust keep.  Another thing is to make a .asm 
program to load under a system() call and exit with the paragraph point that
it was loaded (up to 255 paragraphs).  If Turbo C has the 'size' utility then
that could tell you how large your program is.  If not...download it from a 
bbs.

The other thing is to start the program as assembler with orig 100 or 0 and 
make a loader for it.

Last hack would be to system out to command.com /p and let dos worry about 
things.  

Yes I know these are HACKS to the problem, but I found that a TSR in 'C' is
best done by a system() command to the SHELL (command.com) and make it
fixed in memory.  Sort of a fork() under dos!

Don't trust Turbo 'C' untill version 5 or so..  :-)

Harry Skelton
guardian@laidbak.UUCP