[Coco] Booting Nitros9.

[Dave Philipsen]

On a CoCo 3 the ROMs must be enabled in order for OS9 to search for 
modules there.  As far as I know, the only time those ROMs would be 
enabled is when you build a specific version of OS9 that is meant to 
boot from ROM. And I think in that case the entire boot file would be 
contained in ROM.

As far as a standard OS9 boot that 99.9% of us are using, the ROMs don't 
get enabled and are not scanned for modules.

-Dave


On 5/13/2020 6:41 AM, James Jones wrote:
> On Mon, May 11, 2020 at 1:40 PM Alex Evans <varmfskii at gmail.com> wrote:
>
>> Doesn't OS-9 search ROM for modules and mark for access so that they
>> can be used by the system, so they don't have to be copied into RAM.
>> Wasn't that the idea with the module in the FP ROM?
>>
> Yes, part of the boot process is searching through memory for modules in
> ROM. It looks for the module header bytes and, when it finds them, looks
> more closely, including a CRC check.
>