Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!uxc!deimos.cis.ksu.edu!harris.cis.ksu.edu!mac
From: mac@harris.cis.ksu.edu (Myron A. Calhoun)
Newsgroups: comp.sys.cbm
Subject: Re: what is this chip(65C802)
Keywords: 6502, 8088, 80286
Message-ID: <1581@deimos.cis.ksu.edu>
Date: 7 Apr 89 14:16:14 GMT
Sender: news@deimos.cis.ksu.edu
Reply-To: mac@harris.cis.ksu.edu (Myron A. Calhoun)
Organization: Kansas State University, Dept of Computing & Information Sciences
Lines: 28

In article <2348@maccs.McMaster.CA> cs3b3aj@maccs.UUCP (Stephen M. Dunn) writes:
>And when, pray tell, did the 6502 come out?  And is it not true that just
  I had several KIM-1 single-board 6502-based computers by 1975, so the
  650x (there were eventually a LOT of versions) obviously came out before
  then.

>about the only difference between a 6502 and a 6510 is the 6-bit (I think
>it's 6) parallel port on-chip?  Not a high-tech feature that significantly
  True.  The instruction set was essentially (and maybe exactly) the same.

[several lines deleted]

>Proof?  The code running the 1541.  The save and replace function (@) is
>buggy.....
  Not really--it was just that, based on a not-too-good explanation in the
  manual, most users used a short-hand way of issuing the save-and-replace
  function which had a problem.  I (vaguely) recall that when one issued
  the command correctly, it worked correctly.

I am (or at least I consider myself to be:-) an "expert" on 6502 programming,
but I am/was NOT an expert on Commodore C-64's and/or VIC-20's; even though 
I own/owned about a dozen of them altogether.  But I have a college-age son
whom I do consider to be quite knowledgeable about C= stuff.
--
Myron A. Calhoun, PhD EE, W0PBV, (913) 532-6350 (work), 539-4448 (home).
INTERNET: mac@ksuvax1.cis.ksu.edu
BITNET:   mac@ksuvax1.bitnet
UUCP:  ...{rutgers, texbell}!ksuvax1!harry!mac