Memory and the 68K (was Re: PocketPDP)

From: Ethan Dicks <ethan_dicks_at_yahoo.com>
Date: Thu Sep 21 12:30:44 2000

--- John Honniball <John.Honniball_at_uwe.ac.uk> wrote:
>
> On Thu, 21 Sep 2000 08:24:43 -0700 (PDT) Ethan Dicks
> <ethan_dicks_at_yahoo.com> wrote:
> > If you did, it would _crawl_. The CPU in the Palm is an enhanced 68000
> > processor running at a fairly low speed (16Mhz? 20Mhz?). I think it would
> > be cool, too, but intolerably slow.
>
> Slow? I've programmed an Atari ST with a 68000 at 8MHz,
> and it only had 512kbytes of memory!

And I've programmed many an Amiga similarly equipped.

I was thinking back to running the PDP-11 emulator on a SPARC1 - it was
substantially slower than the real thing, but barely tolerable. The Palm
would have to be slower than that.

> According to the
> O'Reilly book, on the Palm Pilot "Memory is Extremely
> Limited". Well, mine's got 2Mbytes, which isn't limited at
> all compared to the Atari...

Yes, but remember that the 2Mb is all of your storage _and_ running memory.
It's like running an Amiga with 2Mb total, no hard disk, no floppies, just
a RAM disk. When I was using my Palm for an aviation GPS, I had 1.5M of
data files for a 38K program.

-ethan


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Received on Thu Sep 21 2000 - 12:30:44 BST

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