[Coco] Request for Discussion new level 2 Nitros9 booting.

David Gettle david17361 at gmail.com
Wed Oct 29 10:45:43 EDT 2014


Sounds interesting...
I would like to try it out, but, at the moment my CoCo3 system is down hard
(has been for 15 months)

On Wed, Oct 29, 2014 at 10:05 AM, Bill Pierce via Coco <coco at maltedmedia.com
> wrote:

>
> I think I'm with Bll Nobel on this, CocoBoot would be perfect with the
> (pending) Level 3 code.
> From what I understand about Level 3, just before "boot" is called, Krn
> looks for a "NITROS9" module in the bootlist, if found, it jumps there
> instead of boot.
> The NITROS9 module then loads the rest of the bootfile parsing the files
> to various places: in "Sytem", "SCF", and "RBF" memory sections.
> Maybe the CocoBoot loader could replace the NITROS9 module and do the same
> job.
> The only thing that concerns me with Level 3 is that even though you gain
> system memory by removing SCF and RBF drivers, you lose 32k of global
> memory as the SCF and RBF sections are allocated 16k of global memory each.
> On Disto 1 & 2 meg systems... this is trivial, but on a 512k system, it
> hurts as there's not as much program and "virtual memory" (get/put buffers,
> graphics screens, text screens, windows, ect).
> Since I'm writing software at the moment that uses tons of virtual memory,
> I've seen global memory get "eat up" very quickly on a 512k machine.
> Since I have 1 meg on my real Coco, I have to keep a copy of VCC set for
> 512k to test my software to make sure I haven't over run the global memory.
>
>
> Bill Pierce
> "Today is a good day... I woke up" - Ritchie Havens
>
>
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