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From: tim@ur-cvsvax.UUCP (Tim Takahashi)
Newsgroups: comp.sys.mac,comp.sys.misc,comp.sys.m68k
Subject: Mac II NuBus Specifications
Message-ID: <646@ur-cvsvax.UUCP>
Date: Fri, 17-Jul-87 10:51:29 EDT
Article-I.D.: ur-cvsva.646
Posted: Fri Jul 17 10:51:29 1987
Date-Received: Sun, 19-Jul-87 21:06:19 EDT
Organization: Center for Visual Science, Univ. of Rochester
Lines: 23
Keywords: Mac II, NuBus
Xref: mnetor comp.sys.mac:4818 comp.sys.misc:696 comp.sys.m68k:525

We are looking into replacing our instrumentation computer (an ailing DEC
PDP 11/23-Plus) with either an MSDOS or a Mac II (no flames) system. We
specifically require high speed A/D, D/A and TTL I/O. National Instruments
Co. makes boards that will do A/D, D/A etc. that conforms to the NuBus
standard. I have the following questions?

1. What is the NuBus standard (IEEE-?)
2. Can an add on card generate max. priority interrups (every 20 msec) 
     to the 68020
     on the Mac II motherboard?
3. Is it possible to write interrupt service routines (for a user program)
     that coexist with the windowing scheme, et.al. on the Mac II. Do you
     need an assembler or can you write it under a high level language?
4. Are there any good C compilers for the Mac II that are fairly bug free?

    Thanks for any information,

    Tim Takahashi
    Center for Visual Science
    University of Rochester
    Rochester, NY 14627

    rochester!ur_cvsvax!tim