[Coco] 2MB Memory Upgrade For The Coco 3

[Bill Pierce]

Aaron, Sorry but I have to correct you on the "more than 512k" upgrade. OS-9 sees it as regular memory and will allocate the 64k workspaces for new processes as well as graphics screens from the extra memory. I have a 1 meg system and use the extra memory all the time. It's just automatic. NitrOS-9 has full support as well as the patches needed for the graphics drivers already in place. And yes... it makes for good RamDisks... I run a 720k ramdisk when I'm programming in "C".
Theoretically... you can have up to 4 meg... or is it 8 meg now? I know Sock Master was playing around with this.

Music from the Tandy/Radio Shack Color Computer 2 & 3
https://sites.google.com/site/dabarnstudio/
Bill Pierce
ooogalapasooo at aol.com




-----Original Message-----
From: Aaron Wolfe <aawolfe at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Sun, Aug 5, 2012 7:47 am
Subject: Re: [Coco] 2MB Memory Upgrade For The Coco 3


On Sun, Aug 5, 2012 at 6:52 AM, Kip Koon <computerdoc at sc.rr.com> wrote:
> Hi all,
>
> I'm in the market for a 2MB Memory Upgrade board for the Coco 3.  I saw Jim
> Hathaway's 4 512KB Chip Coco3 Memory Upgrade board, but I can't find any
> links to the files he used to create the board with.  Can anyone help me
> find this project's files or one similar to it?  I'm working toward bring up
> my Coco3.  I left a message with Cloud 9 for a RGB to VGA cable, but I

Unless I am mistaken, Cloud-9 does not sell an RGB to VGA solution
(you need more than just a cable).
Maybe you were thinking of Roy Justus's VGA converter?  They work very
well but you'd need to contact Roy to acquire one.
OTOH, Cloud-9 does sell a popular 512k memory upgrade.  Going bigger
than 512k takes a lot of work and the only
practical use for the extra memory is as a RAM drive, so the upgrades
were never that popular.  Not sure if anyone makes one today.

Half of Cloud-9 is in Dallas this weekend representing the CoCo at the
Vintage computer festival SW, so that might explain the delayed
response.

-Aaron

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