[Coco] RAM expansion options for the CoCo 3

[Bill Pierce]

Jayeson Lee-Steere was also working on a memory expansion for the Coco3.

 

 


Bill Pierce
"Charlie stole the handle, and the train it won't stop going, no way to slow down!" - Ian Anderson - Jethro Tull


My Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
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-----Original Message-----
From: William Carlin <whcarlinjr at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Thu, Apr 20, 2017 10:04 am
Subject: Re: [Coco] RAM expansion options for the CoCo 3

I believe that Ian Maverick from Australia is working up a design for 1and/or 2 megabyte RAM expansions for the Color Computer 3.William CarlinOn Tue, Apr 18, 2017 at 12:15 AM, Michael Brant <brant.michael.l at gmail.com>wrote:> Speaking of RAM expansion I seem to remember some one working on a 1 or 2> meg expansion in recent times.  Who was that.>> On Apr 17, 2017 11:43 PM, "Arthur Flexser" <flexser at fiu.edu> wrote:>> > There was also a competitor to Big Basic, called maybe 512K Basic.  I> > remember both being advertised in Rainbow.  (As an interesting historical> > note, some years earlier there was a product called KEY264K for the CoCo> > 1/2 that expanded the RAM that Basic could have available by switching> > between the two 32K RAM banks of a 64K CoCo.)> >> > Art> >> > On Mon, Apr 17, 2017 at 11:05 PM, Sean <badfrog at gmail.com> wrote:> >> > > Sorry to bump a 6 day old reply, but I remember an ad and also a booth> > at a> > > Rainbowfest advertising "Big Basic", that could take more advantage of> > more> > > available RAM.  I don't remember any specifications other than being> > > interested in it at the time, but seeing this thread rang a bell.> > >> > > On Tue, Apr 11, 2017 at 2:40 PM, Bruce W. Calkins <> > > brucewcalkins at charter.net> > > > wrote:> > >> > > > DECB supports 32k of RAM with little ability to effectively use the> > extra> > > > 128 or 512k.  OS-9  Level 2 shines with more RAM. Currently no one is> > > > supporting greater than 512k upgrades.  To the best of my knowledge> > > Cloud-9> > > > is the only source of new 512k upgrades.  (Unless you are willing to> > > > piggy-back 256k by 4 chips yourself.)  Disto/CRC 1 & 2 Meg upgrades> > > > existed, but the hardware was somewhat kludgey needing modifications> to> > > > some DECB programs and tweaking of OS-9 to work as well as> unsoldering> > > the> > > > CPU.  NitrOS9 does support 1& 2 Meg units, but Disto/CRC folded up> shop> > > > decades ago.  What few 1 & 2 Meg upgrade units that exist are seldom> > > parted> > > > with and carry quite a premium on eBay.> > > >> > > > Bruce W.> > > >> > > >> > > >> > > >> > > > On 04/11/2017 12:40 PM, Salvador Garcia via Coco wrote:> > > >> > > >> Hi all,> > > >> What RAM expansion options are there for the CoCo 3 and why would I> > pick> > > >> one over the other?> > > >> I know that Cloud-0 is distributing the Triad, a 512K RAM expansion.> > Is> > > >> this capacity the better choice for DECB? For NitrOS9?> > > >> I have heard of the 2MB RAM expansion, but I don't have any> > information> > > >> about it to consider it.> > > >>> > > >> I favor the Triad, but want to make sure that I get the best option> > for> > > >> what I need (DECB and NitrOS9).> > > >> Thanks! Salvador> > > >>> > > >>> > > >> > > > --> > > > Coco mailing list> > > > Coco at maltedmedia.com> > > > https://pairlist5.pair.net/mailman/listinfo/coco> > > >> > >> > > --> > > Coco mailing list> > > Coco at maltedmedia.com> > > https://pairlist5.pair.net/mailman/listinfo/coco> > >> >> > --> > Coco mailing list> > Coco at maltedmedia.com> > https://pairlist5.pair.net/mailman/listinfo/coco> >>> --> Coco mailing list> Coco at maltedmedia.com> https://pairlist5.pair.net/mailman/listinfo/coco>-- Coco mailing listCoco at maltedmedia.comhttps://pairlist5.pair.net/mailman/listinfo/coco