Path: utzoo!utgpu!water!watmath!clyde!rutgers!rochester!udel!mmdf
From: FYS-MA%FINTUVM.BITNET@cunyvm.cuny.edu (Matti Aarnio)
Newsgroups: comp.os.minix
Subject: Re: porting minix to the mac
Message-ID: <1058@louie.udel.EDU>
Date: 27 Jan 88 13:49:06 GMT
Sender: mmdf@udel.EDU
Lines: 26

>In article <175@sdeggo.UUCP> dave@sdeggo.UUCP (David L. Smith) writes:
>>Has anybody gotten any information on the 68070?  There was a short blurb
>I've seen a Philips (or probably Signetics, come to think of it)
>datasheet that didn't have 'preliminary' or 'advance information'
>stamped all over it, so I guess it actually exists.

   Thats true, Its PHILIPS, and I have one (preproduction) sample, but
   they claimed, it on production now.

>It isn't pin compatible, but a little board should have done the trick.
>They did something stupid though, requiring you to use active glue
>to replace a 68000 with it. I don't remember exactly what they did
>but it was something dumb like inverting one or two signal lines.

   You will need two active things:  20 MHz (or almoast at least) Xtal
   (it has internal clock generator), and some logics to attach built-
   in interrupt controller to original pins.
   (There aren't those IPL-lines, neither FC-lines  -- there is INTERNAL
    MMU, you know ;-)  Who then would care about supervisor-only accesses
    to be detected with auxiliary hardware ?)

>    Jack Jansen, jack@cwi.nl (or jack@mcvax.uucp)
>    The shell is my oyster.

   Matti Aarnio, FYS-MA@FINTUVM.BITNET (or mea@kolvi.hut.fi for UUCP)
      Univ. of Turku, Wihuri Physical Laboratory, Finland