[Coco] CoCo SDC weirdness

[Tim Fadden]

On 3/1/2017 1:24 PM, Tim Fadden wrote:
> On 3/1/2017 1:12 PM, Tim Fadden wrote:
>> On 3/1/2017 12:57 PM, Allen Huffman wrote:
>>>> On Mar 1, 2017, at 1:47 PM, Tim Fadden <t.fadden at cox.net> wrote:
>>>>
>>>> do you think this is a bug/feature, or am I doing something wrong?
>>> I believe it's working as it should. I ran in to this when selecting 
>>> a KenTon SCSI in my MPI, and booting RGB-DOS there, then wondering 
>>> why I couldn't access the floppy. The solution offered here was a 
>>> POKE to switch it back to looking at the floppy controller.
>>>
>>> You can make one .DSK image (hard drive) bootable directly, though, 
>>> so no need for a boot floppy at all. I have a 128MB disk image with 
>>> OS-9 and the bootfile on it:
>>>
>>> DRIVE0,"OS9BOOT":DOS
>>>
>>>         -- A
>>>
>> Well, I think it is something other than that, and I want to use my 
>> scsi disks.
>> If I boot off of the nitros9.dsk or nitros9.vhd in the sdc I can see 
>> the floppies, so what is the difference between that
>> image and the one I made?  Will have to investigate.  I will look for 
>> the poke info.  Although that doesn't make sense
>> with what I experienced with what I just said about booting nitros 
>> off of the sdc above.
>>
>> Thanks for the thought Allen!
>>
>>
>
> Allen,
> I am sure it is some kind of bug.  I booted my system off of the sdc,  
> Thinking I would check the nitros9 sdc
> commands again.
>
> Starting out, the floppies still not working......    I issued the sdc 
> command to see if i could get it to spit out a help.
> Well, I then tried the floppies, and now they work!
>
> Perhaps the guy who (sry, can't remember name) could figure it out, 
> but I am satisfied that I can now make it work.
>
> Have a great day!
>
For anyone following this.....

The key to getting the floppies working from the aforementioned scenario 
is to change the disk image in the sdc
that you booted from.  Minor inconvenience.  I also learned what you all 
probably know is that you can use
backup command to copy real floppies to .dsk images.

I will stay out of your hair for a while now.


-- 
Tim Fadden
"Hey Schmidt, don't forget about the six P's.
Proper Preparation Prevents Piss-Poor Performance!"