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From: jans@tekchips.TEK.COM (Jan Steinman)
Newsgroups: comp.sys.nsc.32k
Subject: Re: cxp/rxp instructions
Message-ID: <1439@tekchips.TEK.COM>
Date: Fri, 10-Jul-87 19:18:06 EDT
Article-I.D.: tekchips.1439
Posted: Fri Jul 10 19:18:06 1987
Date-Received: Sun, 12-Jul-87 13:23:14 EDT
Organization: Tektronix Inc., Beaverton, Or.
Lines: 8

>1) What good are the cxp/rxp instructions?...
>The reason I ask is that evern cxp/rxp causes the 32xxx to read
>from the mod table and I can see this as slowing things down A LOT.

These instructions support shared libraries.  Yes, they are somewhat slower than jsr/ret, but they are MUCH faster than doing shared library calls in software!

Jan Steinman N7JDB - Box 500, MS 50-470 - Beaverton, OR 97077
jans@tekcrl.tek.com - 503/627-5881