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From: mclek@dcatla.UUCP (Larry E. Kollar)
Newsgroups: comp.sys.cbm
Subject: CBM C Compiler talk
Message-ID: <1649@dcatla.UUCP>
Date: Wed, 21-Oct-87 15:54:39 EDT
Article-I.D.: dcatla.1649
Posted: Wed Oct 21 15:54:39 1987
Date-Received: Sat, 24-Oct-87 06:01:09 EDT
Reply-To: mclek@dcatla.UUCP (Larry E. Kollar)
Organization: DCA Inc., Alpharetta, GA
Lines: 45


Is it REALLY true?  Power-C doesn't support the 1581 OR the 1700/1750 RAM
expanders?  Makes me glad I have Abacus....

FYI, the Abacus Super-C system supports the 1581 with absolutely no problems.
I just set it up as drive 9, and Super-C sees it as drive B:

RAM expanders are just a little bit of a hassle.  Abacus is giving away a 
10-line program to tell the system that it has more RAM in drive H:.  It
got published in the Letters column of the July '87 Transactor, so I don't
see a problem posting it here (uh-oh... source on comp.sys.cbm...)

	#include "h:stdio.h"
	file outchan;

	main()
	{
		*(char *)0xed06 = 0x7e; /* see comments below */

		outchan = open( 15, 15, "u:" );
		close( outchan );
	}

With a 1750, this gives you a 2016-block RAMdisk.  If you have a 1700,
replace the 0x7e with 0x20.

The only problem I've had with this is that you can't run in FAST mode and
use the RAMdisk.

On another topic, the source & .COM files for the public domain(?) Small-C
compiler were recently published in comp.os.cpm.  I'm still in the process
of getting these files onto my 1581, but I should know by tonight whether it
will work.  Small-C, if you don't know, is a reduced implementation of C
(no switch/case, for, do/while) that produces Z-80 assembly code.  Included
with the compiler is a Z-80 relocating assembler and linker.  THIS is what
I wish one of the "commercial" compilers would do -- generate assembly code
so I could go in & hand-optimize where needed!

Small-C should be available on your local RCP/M (ARPAnet/BITNET types can
get it from SIMTEL20).  More on this subject later.

	Larry Kollar	...!gatech!dcatla!mclek
	"I like the enchiladas and the teriyaki too,
	 I even like the chicken if the sauce is not too blue..."
			-- ZZ Top, "TV Dinners"