[Coco] Help on Breaking the 64KB Barrier on the Coco 2
computerdoc at sc.rr.com
Sun Jul 22 01:24:09 EDT 2012
I would definitely like to know all about that memory expansion. Thanks.
From: coco-bounces at maltedmedia.com [mailto:coco-bounces at maltedmedia.com] On
Behalf Of Tom Seagrove
Sent: Thursday, July 19, 2012 1:54 PM
To: CoCoList for Color Computer Enthusiasts
Cc: coco at maltedmedia.com
Subject: Re: [Coco] Help on Breaking the 64KB Barrier on the Coco 2
I have some sort of expansion for a CoCo2 somewhere boxed up. I will have
to dig it out and pass on more information....
On Jul 18, 2012, at 9:56 PM, RJRTTY at aol.com wrote:
> In a message dated 7/18/2012 5:16:19 A.M. Eastern Daylight Time,
> computerdoc at sc.rr.com writes:
> Hello All,
> Is there a memory expansion upgrade available for the 64KB Coco 2?
> I'd like to go beyond the 64KB barrier. I'd want it to be compatible
> with NitrOS-9 Level II. I read somewhere on the internet that a
> different memory management scheme had been created for the COCO 1 &
> 2 that had a driver
> written for OS-9 that used some type of bank switching scheme. Any
> Hello all,
> I have just finished working on an expansion upgrade for my coco 1
> which I designed and built in 1985 to be used as a ram drive. It opens
> a page sized window (256 bytes) anywhere in memory dynamically.
> I haven't written any OS9 software for it but I plan to. If anybody is
> I will try to take some pictures and post some schematics for it.
> If interest is great enough I may consider making and selling the
> Coco mailing list
> Coco at maltedmedia.com
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