Official Warnings...

Article View: comp.sys.amiga.tech

Article #12276

Back to comp.sys.amiga.tech Previous Next

#12276

From: Brett S Bourbin
Date: Mon, 17 Apr 1989 16:58

16 lines
1144 bytes

	In the Jan/Feb 1989 issue of Amiga-Mail, under the "Official Warnings
to ROM-Jumpers, Structure-Hackers, and Others", it states that you should
NOT use the TAS assembly instruction.  What is the reason for this?

	In my sine/cosine routines, I use the TAS instruction to set the sign
flag if the result is negative.  Sure, I could change it to MOVEQ #-128,D1,
but why is this instruction "bad"?

--Brett S Bourbin
 __  __   _  __  _  Instructional Computing Programs -- Univ of Maryland
|  ||  | / ||  || \
|  ||  ||  ||  ||  |  INTERNET: brett@SYLVESTER-TR.UMD.EDU
|  ||  ||  ||  ||  |            bbourbin@UMD5.UMD.EDU
 \_||_/ |__||__||__|       BIX: brettb
    College Park        BITNET: bbourbin@UMDD

Technical Details

Message-ID: <3082@haven.umd.edu>

Path: arc1-ca.pugleaf.net!utzoo!dptcdc!jarvis.csri.toronto.edu!mailrus!purdue!haven!sylvester-tr.umd.edu!brett

Show Full Headers

Complete Article Headers

Path: arc1-ca.pugleaf.net!utzoo!dptcdc!jarvis.csri.toronto.edu!mailrus!purdue!haven!sylvester-tr.umd.edu!brett
From: brett@sylvester-tr.umd.edu (Brett S Bourbin)
Newsgroups: comp.sys.amiga.tech
Subject: Official Warnings...
Message-ID: <3082@haven.umd.edu>
Date: 17 Apr 89 16:58:30 GMT
Sender: news@haven.umd.edu
Reply-To: brett@sylvester-tr.UMD.EDU (Brett S Bourbin)
Organization: University of Maryland, College Park
Lines: 16