From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!.POSTED!not-for-mail From: Simon Wright Newsgroups: comp.lang.ada Subject: Re: Forth and others (Was Re: How to get Ada to ?cross the chasm??) Date: Sun, 13 May 2018 07:33:54 +0100 Organization: A noiseless patient Spider Message-ID: References: <87h8njmk4r.fsf@nightsong.com> <87po27fbv9.fsf@nightsong.com> <87in7x62vw.fsf@nightsong.com> <878t8szdtk.fsf@nightsong.com> <87tvrdhl5v.fsf@nightsong.com> <87sh6w7mac.fsf@nightsong.com> <874ljcthwk.fsf@nightsong.com> <7ebffd54sqr4keref28a9afllq4aj293kh@4ax.com> <87vabsmdoa.fsf@nightsong.com> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: reader02.eternal-september.org; posting-host="cd63ede96bff682345b926488c3f6434"; logging-data="13242"; mail-complaints-to="abuse@eternal-september.org"; posting-account="U2FsdGVkX19BrP9oS7TxCXN0w/Ty0CaY1bYB9gkQ/HM=" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (darwin) Cancel-Lock: sha1:/xd5qKCTeHVHrEF2D/w6788buqU= sha1:7as+Ie8gHUqqZ3ND5ZZCISCQxtg= Xref: reader02.eternal-september.org comp.lang.ada:52332 Date: 2018-05-13T07:33:54+01:00 List-Id: Paul Rubin writes: > Dennis Lee Bieber writes: >> 6502 could access the first page using an 8-bit immediate offset. > > Ah ok, similar but not quite the same issue. Thanks. I never > programmed the 6502 in assembler but I remember people who did > discussing putting the frequently accessed stuff on the first page, > due to hoops needed to get to the higher pages. The PDP8 was like that, AFAICR (but it was 50 years ago that I met a PDP8!)