Article View: comp.sys.nsc.32k
Article #61Re: Timing question
From: George Scolaro
Date: Sat, 02 Sep 1989 17:06
Date: Sat, 02 Sep 1989 17:06
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1359 bytes
In article <3878@ditka.UUCP> kls@ditka.UUCP (Karl Swartz) writes:
>In article <13223@reed.UUCP> bob@reed.UUCP (Bob Ankeney) writes:
>>
>> A quick question: Which (if either) is faster in execution:
>
>According to my (ancient) manuals, for a 32032 ...
>
> movw foo(r1),bar(r1) ; 19 cycles
> movw foo[r1:b],bar[r1:b] ; 27 cycles
On a 32532 (or 32gx32) reading the 32gx32 data 'sheet' the timing is:
movw foo(r1),bar(r1) ; 4 cycles (5 x 32032)
movw foo[r1:b],bar[r1:b] ; 8 cycles (3.5 x 32032)
The 32532 has hardware for the addressing modes but the following
still add to the overall instruction time:
Memory relative 3 clocks (bit cisc)
External (yuk) 8 clocks (very cisc)
Scaled Indexing 2 clocks (little cisc)
Note: the above times are added for source and or destination.
--
George Scolaro
george@wombat
(try {pyramid|sun|vsi1|killer} !daver!wombat!george)
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!ames!apple!vsi1!daver!wombat!george From: george@wombat.UUCP (George Scolaro) Newsgroups: comp.sys.nsc.32k Subject: Re: Timing question Message-ID: <309@wombat.UUCP> Date: 2 Sep 89 17:06:02 GMT References: <13223@reed.UUCP> <3878@ditka.UUCP> Reply-To: george@wombat.UUCP (George Scolaro) Organization: Assn. for the prevention of Polar Bears and Kangaroos Lines: 27