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From: hue@netcom.UUCP (Jonathan Hue)
Newsgroups: comp.sys.amiga.tech
Subject: Re: 32 bit RAM
Message-ID: <8720@netcom.UUCP>
Date: 9 Mar 90 06:36:27 GMT
References: <1778@crash.cts.com>
Organization: NetCom- The Bay Area's Public Access Unix System {408 249-0290 guest}
Lines: 14

In article <1778@crash.cts.com> hawk@pnet01.cts.com (John Anderson) writes:
>I thought each instruction was 32 bits in length and needed to be stored at
>two 16 bit addresses so when it was used in 32 bit RAM it took up 32 bits for
>that same one instruction.  Am I right so far in saying the first is right and
>the second (what I used to think) is wrong?  

They're both wrong.  68k instructions can be 1, 2, or 3 16-bit words long,
although I'm pretty sure that only the 68020 and 68030 support the 3
word long ones (CAS2 and LINK (long) come to mind).

Some 68k instructions (mostly integer arithmetic) can use byte, word,
and long word operands.

-Jonathan