[Coco] Help with Nitros9 on SDC?
don at dgb3.net
Fri Apr 30 21:55:21 EDT 2021
Also, the 63sdc.vhd file for 6.0.1 also fails to boot.
On 4/30/21 9:49 PM, Don Barber wrote:
> Hi folks, another data point on this: since two other folks said the
> image booted fine on their 6309 coco3, I went ahead and ordered a
> 6309, and got it installed tonight. And guess what? Same failure.
> I'm really at a loss now. Obviously something is broken on my coco3
> but can't figure out what. I'm getting the weird error 244 behavior in
> OS9 after doing disk access, and the failure to boot the latest EOU
> 6.3 beta, but all the stock commercial apps/games all seem to be fine.
> Does anyone have any ideas?
> Related: can someone point me to the disk image containing the
> utilities described in
> I see several diagnostic disks in the archive but they're all earlier
> versions, not for the coco3.
> On 4/13/21 10:25 AM, Christopher R. Hawks wrote:
>> On Tue, 13 Apr 2021 13:29:20 +0000 (UTC)
>> Robert Gault <robert.gault at att.net> wrote:
>>> I just downloaded that image to my COCOSDC and using my CoCo3 512k
>>> 6309 unit, the 6809 file booted correctly.
>>> Sent from AT&T Yahoo Mail on Android
>> Same image boots fine on my CoCo3 2meg (Cloud-9) 6309 computer.
>> (And the md5sum matches as well.)
>>> On Tue, Apr 13, 2021 at 7:24 AM, Don Barber<don at dgb3.net> wrote:
>>> I have not modified the image.
>>> I downloaded it from
>>> The md5sum of the image is e9970d83991c7aebd5941527637a1930. I
>>> confirmed these match on a fresh download of the zip and what is
>>> written on my sdcard.
>>> On 4/12/21 11:30 PM, L. Curtis Boyle wrote:
>>>> Looking at the boot screen, it looks like KrnP2 is missing from the
>>>> OS9Boot file (and it’s absolutely required). KrnP3 (which is
>>>> optional) is still there, but KrnP2 *has* to be in the boot; it’s
>>>> part 2 of the main memory handling core of NitrOS-9 itself.
>>>> Did you modify the boot at some point?
>>>> L. Curtis Boyle
>>>> curtisboyle at sasktel.net
>> Christopher R. Hawks
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