[Coco] Does anyone have a Level3 disk that actually boots?

[Bill Pierce]

What Level 3 does is this:
The "System" modules" are loaded into the "normal" system space (64k), then RBF snd drivers (not desciptors) are loaded into their own space, then the SCF and drivers are loaded into their own space (8k each I think).
This allows more system space available to hold more loadable modules, open more windows, etc
We're only gaining 16k of system memory and losing 16k of what everyone here seems to think is "unneeded" and "unused" and "bloated" memory.
And no, I doubt the boot can grow beyond 64k. It's only moving thigs "out" of that 64k. There is a possibilty of looking at other module "sets" that could be moved out into their own 8k, such as "pipe"& "clock".
So far, there is one MAJOR disadvantage to Level 3..... The drivewire4 drivers will not function. The reason being the drivewire sits on the "line" as it is an RBF driver with SCF functions. and cannot be seperated.
<y question is.. could create another RBF module, renamed to "DW4" or something (same for SCF), then move ALL the dw drivers out to another space. How much is DW tied to RBF? I know it's tied heavily to SCF.
 
 

Bill Pierce
"Today is a good day... I woke up" - Ritchie Havens
 

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-----Original Message-----
From: Brett Gordon <beretta42 at gmail.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com>
Sent: Fri, Nov 28, 2014 9:55 am
Subject: Re: [Coco] Does anyone have a Level3 disk that actually boots?


From what I understand, Level three allows the kernel to be more than
~64k big.  Theoretically, Its a half-step to a micro kernel.  I think
is uses slightly different MMU maps for the Charactor based SCF and
compared to the Block based RBF.   The magic is performed by special
modules that rearranges the standard OS9Boot file.

Is there any source for this yet?  The last time I checked the nitros9
source, there wasn't much?

On Fri, Nov 28, 2014 at 9:40 AM, Michael Kerpan <mjkerpan at kerpan.com> wrote:
> Long time lurker, wandering out of the shadows here with a simple question:
> what exactly does Level 3 bring to the table over and above level 2? Given
> that Level 2 is already making full use of the 6*09 and the Coco 3 MMU, I'm
> confused as to what Level 3 could possibly add.
>
> Mike
>
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-- 
Brett M. Gordon,
beretta42 at gmail.com

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