Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!ncar!ico!ism780c!wilbur!scott
From: scott@wilbur.uucp (Scott Beckstead)
Newsgroups: comp.os.minix
Subject: Re: Minix ... for PDP-11
Message-ID: <1990Jun08.061615.8087@wilbur.uucp>
Date: 8 Jun 90 06:16:15 GMT
References: <1990May28.015301.7341@virtech.uucp> <1417@lectroid.sw.stratus.com>
Reply-To: scott@wilbur.UUCP (Scott Beckstead)
Organization: Wilbur's Bike Shop, Westlake Village, Ca
Lines: 18


   Well the 6502 whether you know it or not is designed on the lines of
PDP-8 and has almost all of the fancy addressing modes you could want.
  The 65C02 has even more and a couple of fixes that make it quite a usable
processor.  It also has the advantage of single cycle instructions that make
the equivalent of a risc.  I just got thru implementing a 6502 real time
multitasking operating system (minus the disk part) and it was really not that 
bad.  You should be able to implement MINIX on it no problem the only problem
I see is speed on the old Atari.  with a 7 mhz part we have 32 tasks running
simultaneously (16 sio at 19.2kbaud and 16 parallel in/out at 2k bytes per 
second)  This processor moves bytes faster than most 32 bit systems.  Never
give up on a processor just because it's old technology.  Architectures don't
have that kind of immunity I'm afraid. 
Scott
-- 
Scott Beckstead      | Sew Crates was a grate greek.  
CIS 76106,3720       |     Dang that one got right by the spelling checker
FIDO 1:206/2814      | don't look at me YOU wrote it!