[Coco] Help on Breaking the 64KB Barrier on the Coco 2

[Bruce W. Calkins]

As I recall the J & R Banker was not limited to the CoCo 1.  That gave 128k 
or 256k of memory.  They included programs to use the bank-switching under 
RS-Basic and a patch to allow OS-9 Level 1 to boot and use it as a RAM-Disk 
as well as some other limited utilities.

The 128k version was featured as a series of articles in "The Rainbow 
Magazine."

So far I have not been able to or find anyone to decode the patch and port 
the capabilities to NitrOS9.

Bruce W.



----- Original Message ----- 
From: "Kip Koon"

> 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
> thoughts?
>
> Kip