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From: skrenta@amix.commodore.com (Rich Skrenta)
Newsgroups: comp.sys.amiga.emulations
Subject: Re: Apple II Emulator
Message-ID: <1766@amix.commodore.com>
Date: 16 Apr 91 15:55:35 GMT
References: <1991Apr15.213329.8809@rice.edu>
Distribution: usa
Organization: Commodore-Amiga Unix Development
Lines: 33

[email to the original author bounced]

kopnicky@elf.rice.edu (Lyle Warren Kopnicky) writes:
> It sounds like a lost cause to me so maybe you're writing the only apple II
> emulator going.

No, there are quite a few out there.  I had sources to several when I wrote
my Apple II emulator; they were quite helpful.  Getting the basics of the
emulator working was pretty easy, but getting the last bugs out of the
emulation took quite a while.  Neither of the two working emulators I had
did perfect emulation.  There would be subtle bugs in some instructions which
would case Integer basic to barf on such and such...

Anyway.  I've got an emulator which does

	o  Perfect 6502 emulation (no bugs) to my knowledge
	o  Catches DOS, Prodos and ROM calls for speed
	o  Raw Disk II interface, so even if you application doesn't use
	   DOS it will still run.  You just make a disk image and "boot" it
	   in the emulator.
	o  A nifty command line interface which lets you dissassemble,
	   set trace regions, breakpoints, etc.
	o  Alas, no graphics.  Send me diffs if you add them.

I just added a crude printer to it as well, so I could print stuff out in
my emulator and have it go to a Unix file.

I posted it to alt.source some time ago, so perhaps it's archived somewhere.
I'll email it to anyone who asks (or repost it if there is a large response).

Rich
-- 
skrenta@amix.commodore.com