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From: dowdy@apple.UUCP (Tom Dowdy)
Newsgroups: comp.sys.mac
Subject: Re: True Mac+ Compatibility in Upgraded Macs
Message-ID: <1105@apple.UUCP>
Date: Fri, 19-Jun-87 17:50:34 EDT
Article-I.D.: apple.1105
Posted: Fri Jun 19 17:50:34 1987
Date-Received: Mon, 22-Jun-87 04:48:12 EDT
References: <3799@burdvax.PRC.Unisys.COM>
Reply-To: dowdy@apple.UUCP (Tom Dowdy)
Organization: Apple Computer Inc., Cupertino, USA
Lines: 29
Keywords: upgrades compatibility

In article <3799@burdvax.PRC.Unisys.COM> jjs@burdvax.PRC.Unisys.COM (James Solderitsch) writes:
>A demo program called Jam Session (dated around 9/85 according to the
>Finder) was copied from some disks of PD/Shareware stuff at the recent
>Drexel Mac Fair. It's supposed to play sound files generated by the
>Studio Session program (I think that is its purpose). Some instrument
>sounds and some sample songs were included in the folder containing the
>Jam Session program.
>
>This program loads ok on my upgraded Mac (128K to Mac+) but bombs
>immmediately (ID= 02) when I try to load one of the demo song files.
>On the other hand, on my friend's factory fresh Mac+, the program does
>in fact work. We made a single DS boot disk containing the folder with
>Jam Session and tried it on both machines with the result that it works
>on the real Mac+, but not on my upgraded Plus. All leads on the source
>and/or correction to this problem are welcomed.

I also have the Jam Session demo.  It runs on MY Mac Plus (upgraded),
it ran on one or two "factory fresh" ones that I have seen.  I have
seen it run on a pre-release SE.  It does not run on this Mac Plus
I am sitting at, nor the SE next to it.  I have been unable to see
a pattern in any of this.  What I wish there was would be a new version
of Jam Session, because it's obviously very flakey with new ROMs.

  Tom Dowdy                 CSNET:    dowdy@apple.CSNET
  Apple Computer            Internet: dowdy@apple.COM
  20525 Mariani Ave         MoneyNet: (408) 973-6689
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  MS: 27Y                   UUCP:     {sun,voder,amdahl,decwrl}!apple!dowdy
  "Plus ca change, Plus c'est la meme chose."