Path: utzoo!attcan!sobmips!uunet!samsung!gem.mps.ohio-state.edu!tut.cis.ohio-state.edu!purdue!haven!mimsy!fe2o3!rusty
From: rusty@fe2o3.UUCP (Rusty Haddock)
Newsgroups: comp.sys.amiga
Subject: Re: New Agnus
Message-ID: <259@fe2o3.UUCP>
Date: 16 Nov 89 04:26:50 GMT
References: <9932.AA9932@heimat>
Reply-To: rusty@fe2o3.UUCP (Rusty Haddock)
Organization: 1 DIV entropy
Lines: 39

In article <9932.AA9932@heimat> sneakers@heimat.UUCP (Dan "Sneakers" Schein) writes:
   >In Message <11981@mcdphx.phx.mcd.mot.com>, stan@teroach.UUCP (Stan Fisher) writes:
   >>O.k... o.k...  I'll take the liberty to stuff this short ECS chip set test
   >>into my posting.  This was posted on my BBS and checks the existence of
   >>both the Super Agnus and the New Denise.  Source and executable included.
   >
   > (<Sneakers'> disclaimer on)
   > I havent had time to look at the source code yet...
   > (disclaimer off)

I have and my old 1.0 RKMs didn't explain to my satisfaction what
Jeff (the author, not poster) was doing to determine the Agnus chip.

   >  Super Agnus Chip (NTCS)
   >  Normal Denise Chip
   >
   >Operating System is -Unaware- of the Presence of the Super Agnus Chip
   >
   > I beg to differ because:
   >...
   >  (The bottom line)
   >  This is a great idea however it does not seem to work correctly for me.

And it doesn't work for me on my old(?) A1000.  It says I have a PAL Agnus. 
Fat chance!  I bought this bugger way back, well, 4-years ago today I do
believe, and I don't believe that CBM had PAL chips ready then!  As for the
`Normal Denise Chip' I couldn't find the offset that Jeff used to determine
that boolean (normal or new Denise chip). 

Manx's SDB says that DFF004h (the mem location for the Agnus chip test
PAL/NTSC/etc) reads 8000h.

I'd say "lay off this program" 'til someone with a tad bit more expertise
can check it out.

		-Rusty-
-- 
Rusty Haddock		o  {uunet,att,rutgers}!mimsy.umd.edu!fe2o3!rusty
Laurel, Maryland	o  "IBM sucks silicon!" -- PC Banana Jr, "Bloom County"