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From: c8923075@frey.nu.oz.au (Chris Baird)
Newsgroups: comp.sys.cbm
Subject: Miscellaneous CBM64 questions to end the year :-)
Message-ID: <1990Dec4.014321.14609@frey.nu.oz.au>
Date: 4 Dec 90 01:43:21 GMT
Distribution: comp
Organization: Department of Mathematics, Uni of Newcastle, Oz.
Lines: 48



	Don't blame me if these are often repeated questions,,, It's your
fault for not talking your SysMgr to set up an archive for this newsgroup!

	This particular account disappears into the Binary Beyond on the
10th of December, so here's a couple of quick questions to finish my
acedemic year:


Q1: I've been mucking around with the BASIC interpreter in the 64, after
	neglecting it for a couple of years while writing in machine code,
	and within the varible storage area ($2D-2E onwards) where all
	the FP,Integer and String info is kept, there's a 4th type of
	record for the DEFFN's. The info I have at hand only describes the
	format for the first 3 types, and I wonder if anyone could describe
	what the ~5 byte onwards in the DEFFN field are for.
	Isn't it amazing how CBM managed to get a reasonible OS into 7K?

Q2:	Over half a decade ago, I used to have a magazine (before some
	unmentioned person lost it) that told of "Magic Numbers", approx
	10 digit long numbers, that when entered into a VIC/64 would reset
	the machine. I've had a look through a dissassembly of the 64's ROMs
	and haven't found a clue to what they are. I know they exist, I've
	actually tried typing them in. They where something like 36888234...

Q3:	Is the 6510's I/O DDR (byte $0000) useful for anything?

Q4:	ULTIMAX ---- One fine night (~1am) I was looking through the memory
	configurations & noticed the lay-out for the never released ULTIMAX.
	It wasn't difficult to see why; 4K RAM, 8K ROM & 4K I/O. Yuck,,,,
	Question :- How far did Commodore get with this? Is there source
	code for the Kernal lying around somewhere, and how different would
	it have been from the std. 64? (Kernal & Char ROM, etc)

Q5:	In my Austrailan/Euro PAL ~1983 C64, there is a string "RRBY" from
	$FFF6-FFF9, just after the Kernal jump table. I've checked on a few
	other Commodore machines (VIC,PET4032) but it's not there, and
	doesn't seem to be apart of any routine. Someone's Initals?


After the 10th, please send any correspondence to LNCJB@cc.nu.oz.au, but how
about posting it instead? (Give this little newsgroup a bit of volume :)

-- 
              Chris Baird
  Undergrad BSc(Physics) @ Newcastle Uni (OZ!)
         C8923075@frey.nu.oz.au