Path: utzoo!attcan!uunet!husc6!mailrus!ames!killer!chasm
From: chasm@killer.DALLAS.TX.US (Charles Marslett)
Newsgroups: comp.sys.atari.8bit
Subject: Re: 6502 timing question
Summary: Generally, on a 6502 a write is 1 clock slower than a read
Message-ID: <5488@killer.DALLAS.TX.US>
Date: 12 Sep 88 01:01:19 GMT
References: <8809091641.AA15253@ucbvax.Berkeley.EDU>
Organization: The Unix(R) Connection, Dallas, Texas
Lines: 11



The question was asked:
   "What is the difference between the time a LDA instruction takes, and the
   time a STA takes?"

It depends on the indexing, zero page stuff, etc., but in general, a store takes
one clock cycke longer than the load, add, or, and, etc.

Charles Marslett
chasm@killer.dallas.tx.us