Re: A85: Rigel, where'd it go??

To: assembly-85@lists.ticalc.org
Subject: Re: A85: Rigel, where'd it go??
From: 82nd Deer <eviljim@megsinet.net>
Date: Tue, 14 Oct 1997 17:49:34 -0500
In-Reply-To: <199710142211.SAA26687@er5.rutgers.edu>
Reply-To: assembly-85@lists.ticalc.org

Funny, this was posted before, and you could have just read that but...

Your first relocation (or any relocation 256 bytes away from the last
relocation) is THREE bytes, that's how it can tell if it is a relative or
not.  Each successive is one byte.


>So, how do you know whether the next fixup is less than 256 bytes away
from the last.  Say the fixup is 257 bytes away from the last (meaning a
word is necessary to store the relative address).  According to your
method, you would read in only the next byte ($01) and interpret it as a
relative fixup of only 1 byte away, when actually you want to read the word
$0101.  This means you would have to store everything as words, or have
some delimiting byte.  Either way, you must use two bytes.  Correct me if
I'm wrong, but your logic seems to be incorrect.
>
>

References:

Re: A85: Rigel, where'd it go??

From: Benjamin Sferrazza <bens@eden.rutgers.edu>