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- Path: sparky!uunet!mcsun!uknet!acorn!armltd!abaum
- From: abaum@armltd.uucp (Allen Baum)
- Newsgroups: comp.arch
- Subject: Re: Indexing in microprocessors
- Message-ID: <6281@armltd.uucp>
- Date: 7 Sep 92 10:15:34 GMT
- References: <1811llINN3ci@usenet.INS.CWRU.Edu> <08jn8-q.feustel@netcom.com> <JBS.92Sep3133125@sun1.Congruent.COM> <7459@skye.ed.ac.uk>
- Organization: Advanced RISC Machines Ltd
- Lines: 14
-
- richard@aiai.ed.ac.uk (Richard Tobin) writes:
-
- >Fast memory for the registers was an optional extra on the PDP10, so
- >it might not do you much good.
-
- Last time this thread went around, it was mentioned that although the
- feature was optional, it wasn't clear that ANY systems were bought without it.
-
- Note this was true for the KA series only; the KL series used real registers-
- but it may be true that code in the registers ran SLOWER than out of the cache,
- since the cache was designed to be the usual case.--
-
- ----------------
- Allen J. Baum Apple Computer baum@apple.com, abaum@armltd.co.uk
-