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From: peter@sugar.UUCP (Peter da Silva)
Newsgroups: comp.sys.amiga
Subject: Re: CBM and upgrade paths
Message-ID: <1094@sugar.UUCP>
Date: Sat, 21-Nov-87 08:55:40 EST
Article-I.D.: sugar.1094
Posted: Sat Nov 21 08:55:40 1987
Date-Received: Wed, 25-Nov-87 03:03:49 EST
References: <8711040542.AA29099@violet.berkeley.edu> <992@sugar.UUCP> <5941@jade.BERKELEY.EDU>
Organization: Sugar Land UNIX - Houston, TX
Lines: 43
Summary: You got the wrong boy, boy.

> <The Amiga 2000 is 100% software compatible with the 500 and 2000. 100%.
> <Remember that number.
> CBM didn't promise 100% software compatability. They didn't deliver
> it. I know of products that suffer from the SLOW/FAST ram in the
> boxes. Still run, but not nearly as nicely.

Any products that do not run with more than 512K, or with RAM in unexpected
places, were broken on the A1000 already. Because the A1000 also supports
both of these things.

> <If I wanted to fiddle with mapped memory I'd get an
> <IBM-PC. The hardware's cheaper.
> And you're wrong about the hardware being cheaper. Minimum for a
> starting IBM-PC is about $400. Minimum for a CoCo is less than $200.

I mean *expansion* hardware.

And I misspoke. What I wanted to say was:

    If I wanted to fiddle with bank-selected memory I'd get an IBM-PC.
    
All these people who can't keep mapped memory, protected memory, and virtual
memory straight have got to me. Speaking of which:

> Finally, why do you keep asking for VM and memory protection (with
> their implied mapping) if you don't want mapped memory?

I'm the guy standing on the sidelines saying "Virtual Memory means Virtual
Performance". Not the guy saying "I want VM" or "I want raw memory". I want
an MMU that will keep my tasks out of each other's hair. I don't want VM.

> [the 6809] looks much more like a PDP-11 than an
> 8088. But I suspect you know that.

It's like a PDP-11 with half the available memory per task... and the PDP
was too small, really. I love the PDP, and I wish IBM had chosen the 6809
over the 8088. If you're going to use bank selecting, at least be honest
about it. But given the choice of a 68000 or a 6809, I know where my
priorities lie.
> 
-- 
-- Peter da Silva  `-_-'  ...!hoptoad!academ!uhnix1!sugar!peter
-- Disclaimer: These U aren't mere opinions... these are *values*.