[Coco] CoCo 3 patch question

[jdaggett at gate.net]

Roger

The addresses I quoted are actual addresses of the code in the Disk Basic 
ROM. In the Coco3 these are copied to RAM. using above that would 
eliminate the Disk Basic altogether. If that is what you want then go for it. 


james


On 25 Nov 2008 at 14:20, Roger Taylor wrote:

> At 08:15 AM 11/25/2008, you wrote:
> >Roger
> >
> >There are three places that the Disk Basic Code is patched.
> >
> >Patch 28 - $C0C6 of the Disk ROM Version 1.0. This points to the
> >Copyrigght flash screen. that needs updating. This patch is only
> >implemented if the disk ROM is version 1.0
> >
> >Patch30 - $C0D9 is the patching of Disk basic V1.1 Copyright screen.
> >
> >Patch29 - $C8B4 of the Disk basic Version 1.1 ROM and is 11 bytes
> >long. This is the Keyboard Patch. It stores 11 NOPs.
> 
> 
> The simplest solution would be to just start the code at $c8bf but
> then you lose 2239 bytes.  Actually, the upper 2K seems like a good
> place to put data but carefully.
> 
> -- 
> Roger Taylor
> 
> http://www.wordofthedayonline.com
> 
> 
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