[Coco] Nitros9 technical question....

[Michael Brant]

And there is a discord server with a nitros9 channel.

On Monday, November 11, 2019, Robert Gault <robert.gault at att.net> wrote:

> Phil,
>
> This list ought to be as good as anything else but you can try:
> https://sourceforge.net/projects/nitros9/
> Look at the Support and Discussion panels.
>
> Regards your specific question, you could study the current NitrOS-9 disk
> I/O code as it also needs to deal with simultaneous disk access when more
> than one program is running. I assume that the disk code should ask the
> system for permission to access a disk and/or the system should keep track
> of the number of current requests for disk access.
> Either disk or system code would, in your case, then keep track of the A/O
> AVR values and prevent cross routing.
>
> Robert
>
> Phill Harvey-Smith wrote:
>
>> Hi all,
>>
>> Is there still a Nitros mailing list that might be a more appropriate
>> place for this?
>>
>> Anyway I have a mostly working boot & disk driver for the DragonMMC
>> interface, which can boot and
>> access any mounted disk images. What I want to do is to convert the ROM
>> utilities that allow you to
>> list the contents of the SD card, and mount / unmount images to command
>> line utilities for Nitros.
>>
>> The DragonMMC works by having the FAT & SD reading part of the system
>> handled by and AVR
>> microcontroller, the 6809 side of things uses a set of I/O locations to
>> exchange data with the AVR.
>> This works for the disk driver code, and would be able to work for the
>> utility code, however being a
>> multi-tasking OS I need to ensure the utilities don't interfere with disk
>> I/O that may be going on
>> in the background.
>>
>> Does anyone have any suggestions as to the correct way to do this?
>>
>> Cheers.
>>
>> Phill.
>>
>>
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