Article View: alt.folklore.computers
Article #623877Re: What microprocessor is more powerful, the Z80 or 6502?
From: Andy Leighton
Date: Mon, 11 Jun 2018 08:20
Date: Mon, 11 Jun 2018 08:20
23 lines
3045 bytes
3045 bytes
On Mon, 11 Jun 2018 08:00:27 +0100, Ahem A Rivet's Shot <ste...@eircom.net> wrote: > On Sun, 10 Jun 2018 17:33:59 -0400 > Andreas Kohlbach <a...@spamfence.net> wrote: > >> Isn't a 6809 considered an 8-bit CPU with a lot of 16-bit features? May >> be like a 68000 is a 16-bit CPU with some 32-bit features? > > The Motorola engineer who came to talk to us about the 6809 and > actually talked about the 68000, which had come off the company > confidential list so recently that the documents still had the security > legends, gave the strong impression that the 6809 was deliberate practice > for the 68000 which is what they wanted to do but weren't ready for. I am not so sure about that. The 6809 seems like an outgrowth of the 6800. Take for example the registers - the 6809 just had A and B (like the 6800) but could also treat them together as a 16bit register (like the Z80's BC,DE,HL), whereas the 68K had 8 32bit general purpose registers. That's a big difference in design philosophy. -- Andy Leighton => an...@azaal.plus.com "We demand rigidly defined areas of doubt and uncertainty!" - Douglas Adams
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X-Received: by 2002:adf:fe47:: with SMTP id m7-v6mr1296386wrs.20.1528705219308; Mon, 11 Jun 2018 01:20:19 -0700 (PDT) X-BeenThere: alt.folklore.computers@googlegroups.com Received: by 2002:adf:fe8c:: with SMTP id l12-v6ls2176130wrr.2.gmail; Mon, 11 Jun 2018 01:20:18 -0700 (PDT) X-Received: by 2002:adf:f7c5:: with SMTP id a5-v6mr1290307wrq.14.1528705218553; Mon, 11 Jun 2018 01:20:18 -0700 (PDT) MIME-Version: 1.0 Path: mbox-mo1.pugleaf.net!d26-v6ni13841wmb.0!nntp.google.com!goblin2!goblin1!goblin.stu.neva.ru!feeder4.usenet.farm!feed.usenet.farm!border1.nntp.ams1.giganews.com!border2.nntp.ams1.giganews.com!nntp.giganews.com!buffer2.nntp.ams1.giganews.com!nntp.brightview.co.uk!news.brightview.co.uk.POSTED!not-for-mail NNTP-Posting-Date: Mon, 11 Jun 2018 03:20:18 -0500 Newsgroups: alt.folklore.computers From: Andy Leighton <an...@azaal.plus.com> Subject: Re: What microprocessor is more powerful, the Z80 or 6502? References: <87po13wr5x.fsf@usenet.ankman.de> <pfddl1$31r$1@dont-email.me> <87a7s5qdoh.fsf@usenet.ankman.de> <113a57a1-87b4-4883-a4ec-3f273501b0c4@googlegroups.com> <c38a1334-ea83-4a2e-98d6-a6f25314de62@googlegroups.com> <87fu1ugwc8.fsf@usenet.ankman.de> <20180611080027.4f7aaef05cf4de35d18709d6@eircom.net> Reply-To: an...@azaal.plus.com User-Agent: slrn/1.0.2 (Linux) Message-ID: <slrnphsc62.nh0.andyl@azaal.plus.com> Date: Mon, 11 Jun 2018 03:20:18 -0500 Lines: 23 X-Usenet-Provider: http://www.giganews.com X-Trace: sv3-39USFLPujpINJcuBI67O/QHR/tSXfZqT271otmxK7SjUYjrSUBaK1e0/bu+MHAPhTYY32LwvUbB0Kr4!dhHUcYNbTS7PU6tuRNMAQQz3PTJjEBNdmDPqUlhndQDYHG6dUmHGpybFkOFIVstelbDBRL18XfrY!/EtyFOQ= X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 2333 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit