Path: utzoo!attcan!uunet!cs.utexas.edu!tut.cis.ohio-state.edu!bloom-beacon!EXPO.LCS.MIT.EDU!rws
From: rws@EXPO.LCS.MIT.EDU (Bob Scheifler)
Newsgroups: comp.windows.x
Subject: Re: 29 bit resource id and garbage collection
Message-ID: <8911042031.AA02543@expire.lcs.mit.edu>
Date: 4 Nov 89 20:30:56 GMT
References: <110489.150927.dan@watson.ibm.com>
Sender: daemon@bloom-beacon.MIT.EDU
Organization: The Internet
Lines: 8


    But several lisp implementations I know of use the low order bits
    for type codes.

This is irrelevant (think about it).  What matters is how many bits are
available, not which bit positions they are shifted into to represent an
integer in the particular implementation.  (CLU also uses the low order bits
on the 68000, and the high order bits on the VAX for type codes.)