Path: utzoo!attcan!uunet!tut.cis.ohio-state.edu!ucbvax!GRIN1.BITNET!THROOP
From: THROOP@GRIN1.BITNET ("Throop,Henry B")
Newsgroups: comp.sys.apple2
Subject: Re: disconnecting /RAM, Applesoft questions
Message-ID: <9010280138.AA06361@apple.com>
Date: 28 Oct 90 02:36:36 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 23

To disconnect /RAM, you need to do three things: remove it from the device
driver vectors on the ProDOS System Global Page, remove the device number
(Slot 3 drive 2 for /RAM) from the online devices list, and then set the
device count down to where it should be.  Beneath Apple ProDOS tells you how
to do all this; if you don't have this book, buy it; it's an invaluable aid
that comes in use all the time.

Two books I know of (both out of print, I think) list the vectors for using
hi-res graphics from assembly language.  Unfortunately, I don't have either
of them here with me at college.  These are _Graphically Speaking_ (Mark
Pelzarski) and Apple Arcade Game Design (Jeffrey Stanton).  If they still
have some left, you can probably order the former from Polarware (formerly
Penguin Software) for $2.95 or so.

I don't think Apple has documented the entry points at any time; technically,
Applesoft is property of MicroSoft (who write it back in 1980), and Apple
can't publish disassemblies of it.  It's not in the gs firmware manual or the
][+ or //e technical references.

--
Henry Throop
THROOP@GRIN1.BITNET
throoph@jacobs.cs.orst.edu