Path: utzoo!mnetor!uunet!sdrc!crgabb
From: crgabb@sdrc.UUCP (Rob Gabbard)
Newsgroups: comp.sys.apollo
Subject: Re: Apollo Press Release: Domain/OS
Message-ID: <245@sdrc.UUCP>
Date: 17 Mar 88 14:52:04 GMT
References: <3a60e1e6.8cd8@apollo.uucp> <460@edsews.EDS.COM> <156@vader.UUCP> <1060@qiclab.UUCP>
Organization: Structural Dynamics Research Corp., Cincinnati
Lines: 32
Summary: dn10000 compatible

In article <1060@qiclab.UUCP>, neighorn@qiclab.UUCP (Steve Neighorn) writes:
> "The Domain 10000's are object code-compatible with Apollo's existing
>  workstation family. However, source code running on current Apollo
>  machines must be recompiled to run on the new faster systems, a job
>  that Apollo officials said requires some work.
>   
> I will publicly apologize if I am missing the "big picture" here, but
> how can the 10000 be object code compatible with current machines at the
> same time source code running (?) on current machines requires 'some
> work' to be recompiled? Is this a glitch in the Digital News article, or
> did I forget to oil the semantic brain cells this morning?
> 

 This kind of statement has been made elsewhere, and it is confusing. I may
need to be corrected here, but I believe that the copatibility resides in
data file compatibility. In other words, a DN10000 can reside on the same
DOMAIN as a Motorola based DNXXXX.  The DN10000 is source code copatible with
recompiling necessary.  This is to be expected - look at the SUN4 and HP825
series. You can't expect a RISC based machine to be object code compatible
with a Motorola based CPU - unless you'd like to write a Motorola emulator.
Come to think of it, considering the speed of these new super workstations,
an Intel or Motorola emulator may be able to acheive the speed of the
original instead of drudging along slower than a 4.77Mhz PC (ala. Amiga
transformer).


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Rob Gabbard                               |    UUNET: uunet!sdrc!crgabb
Workstation Systems Programmer            |    PHONE: (513)576-2600
Structural Dynamics Research Corporation  |
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