From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.1 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FROM,HTML_MESSAGE,MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 20055 invoked from network); 4 Feb 2021 22:47:31 -0000 Received: from minnie.tuhs.org (45.79.103.53) by inbox.vuxu.org with ESMTPUTF8; 4 Feb 2021 22:47:31 -0000 Received: by minnie.tuhs.org (Postfix, from userid 112) id 93B829C943; Fri, 5 Feb 2021 08:47:27 +1000 (AEST) Received: from minnie.tuhs.org (localhost [127.0.0.1]) by minnie.tuhs.org (Postfix) with ESMTP id D34039BA45; Fri, 5 Feb 2021 08:47:14 +1000 (AEST) Authentication-Results: minnie.tuhs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.b="Wvln5Jv9"; dkim-atps=neutral Received: by minnie.tuhs.org (Postfix, from userid 112) id 4DF559BA45; Fri, 5 Feb 2021 08:47:13 +1000 (AEST) Received: from mail-ej1-f53.google.com (mail-ej1-f53.google.com [209.85.218.53]) by minnie.tuhs.org (Postfix) with ESMTPS id 988A99BA40 for ; Fri, 5 Feb 2021 08:47:12 +1000 (AEST) Received: by mail-ej1-f53.google.com with SMTP id hs11so8485400ejc.1 for ; Thu, 04 Feb 2021 14:47:12 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=+el8bzaLSW8v3d2ggGOL/uI090y8aUwPSAxXMr8NxKw=; b=Wvln5Jv9pxsj0ORWhJKIChB+Yf9WV+MeYlAy6dYIXuyEy9WPgF9KBMfFtuUedwVeve gbaCq1NUaPqF9Q/Mh1MOEahiM1qK1IeBnMsn0zN/z5GoPAXVulLXVD1sxLXO5TjWR7cy BXBLir8gjdukYTGUQVa+7fE6OExCt5gtvOua0X3C66edmQPSC1i+fndUuomkpqDq5Xkh B697JYZmr9ZBPMzwO3nfFzhQLC2yg16FqTFp/SIsnHZuOcQNdNGnK38Ze7+moIEJ2017 15CD9+MJPOAHfujSbdwjAOdy3oDChJwLPeNRvOuUdmQsi/eB42Gq82E+ai/cargj8wHG ieuw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=+el8bzaLSW8v3d2ggGOL/uI090y8aUwPSAxXMr8NxKw=; b=OYDdwoFgkIJMay9/ydNyd5dijsWWXdk3CwnlkJHubab/qB0LDCQG9zY4JkLwGO92w8 HIspR6Ozy4wHKxA/RZibtLVz7w1s/ibkIyAKHdV7hc0VrA3cFtKsgoO2GZYSc5ZAa+jS gwGzKNnlFmPNVaqZ6iAuy3PfRQ9wgHNobqaXKgW7B9MlVLez/zUYkbGguO+Y0wEtLfXA CizW1K6DQNrrh3UNYwXI1xO4DTe9xTCmOgq4QnRMVDbVJj0RxzNgxeCIY3KFpwtBoYKP 1rQTS+KtWAkyJrHOhPxHY52AzNqe+2W2y/GwGQK+NcPcVJnhyNoFunGVqYxg22P+BxdM 0bHA== X-Gm-Message-State: AOAM530sJYgDWjAUYYmrYeonjvbzo2uTywmItCrcyhzRci5/AxBybJ38 V5Cj2xHwZI4oL7WVfg2tLxM93joAGPK63yR1M9c= X-Google-Smtp-Source: ABdhPJx1w4KFNZUd/LBHopLOMicg0csYEar74cGCijyKiq+2eDPv4Q2snW2Y1i+VvkMa4u/4FBEMN5zY3n1r9UdFpBA= X-Received: by 2002:a17:906:688f:: with SMTP id n15mr1261349ejr.71.1612478831250; Thu, 04 Feb 2021 14:47:11 -0800 (PST) MIME-Version: 1.0 References: <202102030759.1137x7C2013543@freefriends.org> <202102030858.1138wuqd011051@freefriends.org> <27567.1612399305@hop.toad.com> <20210204013356.GA16541@mcvoy.com> In-Reply-To: From: Henry Bent Date: Thu, 4 Feb 2021 17:47:02 -0500 Message-ID: To: Adam Thornton Content-Type: multipart/alternative; boundary="000000000000f1d19b05ba8a7bb6" Subject: Re: [TUHS] 68k prototypes & microcode X-BeenThere: tuhs@minnie.tuhs.org X-Mailman-Version: 2.1.26 Precedence: list List-Id: The Unix Heritage Society mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: The Eunuchs Hysterical Society Errors-To: tuhs-bounces@minnie.tuhs.org Sender: "TUHS" --000000000000f1d19b05ba8a7bb6 Content-Type: text/plain; charset="UTF-8" On Thu, Feb 4, 2021, 17:40 Adam Thornton wrote: > I'm probably Stockholm Syndrommed about 6502. It's what I grew up on, and > I still like it a great deal. Admittedly register-starved (well, unless > you consider the zero page a whole page of registers), but...simple, easy > to fit in your head, kinda wonderful. > > I'd love a 64-bit 6502-alike (but I'd probably give it more than three > registers). I mean given how little silicon (or how few FPGA gates) a > reasonable version of that would take, might as well include 65C02 and > 65816 cores in there too with some sort of mode-switching instruction. > Wouldn't a 6502ish with 64-bit wordsize and a 64-bit address bus be fun? > Throw in an onboard MMU and FPU too, I suppose, and then you could have a > real system on it. > > Sounds like a perfect project for an FPGA. If there's already a 6502 implementation out there, converting to 64 bit should be fairly easy. -Henry --000000000000f1d19b05ba8a7bb6 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

On Thu, = Feb 4, 2021, 17:40 Adam Thornton <athornton@gmail.com> wrote:
I'm probably Stockholm Syndrommed about 6502.=C2=A0 It's what= I grew up on, and I still like it a great deal.=C2=A0 Admittedly register-= starved (well, unless you consider the zero page a whole page of registers)= , but...simple, easy to fit in your head, kinda wonderful.

I'd love a 64-bit 6502-alike (but I'd probably give it mor= e than three registers).=C2=A0 I mean given how little silicon (or how few = FPGA gates) a reasonable version of that would take, might as well include = 65C02 and 65816 cores in there too with some sort of mode-switching instruc= tion.=C2=A0 Wouldn't a 6502ish with 64-bit wordsize and a 64-bit addres= s bus be fun?=C2=A0 Throw in an onboard MMU and FPU too, I suppose, and the= n you could have a real system on it.

=
Sounds like a perfect project for an FPGA.=C2=A0 If there= 9;s already a 6502 implementation out there, converting to 64 bit should be= fairly easy.

-Henry
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