[Coco] Another ROMable NitrOS9 question

[billg999 at cs.uofs.edu]

> On Mon, Jan 13, 2014 at 4:15 PM, billg999 wrote:
>> But, this brought up another interesting idea in my head.  Has anyone
>> ever considered putting together a ROMed version of NitrOS9 to replace
>> the built in BASIC ROM in the COCO1 and COCO2?  I would think that an
>> equivalent to the NitrOS9 boot provided with DriveWire images could
>> easily be fit into the 16K ROM space leaving 48K for users to run
>> programs.
>
> This you can find in the level1/coco2/bootroms folder.
>
> However, you won't gain memory space if you have 64K RAM. When you
> start NitrOS-9 the ROM is disabled and the coco runs in all-RAM mode,

On a COCO1 or COCO2?  I thought they always had ROM and when you ran
NitrOS9 you just got to use whatever RAM you had.  Thus my idea was
to replace the BASIC ROM that isn't being used with all the kernel
and driver stuff (and maybe even a few often used commands) and
leave all the RAM for user stuff.

bill

> so you'll have 64K minus kernel and bootfile for your user programs in
> either case.
>
> The boot ROM can still have advantages such as faster boot, "embedded"
> disk-less systems and so on.
>
> Otherwise a boot ROM (replacing the BASIC ROM or sitting in a
> cartridge/rompak) makes a lot of sense if you want to run NitrOS-9 on
> a 32K RAM system...
>
> Tormod
>
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