[Coco] So, I have this NitrOS-9 disk...

[Daniel Campos]

That is not the case. Those same 300ns ICs are already equiping another 
computer and without any issues.

Daniel

Em 11/10/2013 21:10, Darren A escreveu:
> On Fri, Oct 11, 2013 at 6:05 PM, Juan Castro wrote:
>
>> I am curious about what could be the cause for such behavior and why DECB
>> did work even with the slow RAMs. Maybe it's the sector read/write loop?
>> The code in DECB does something totally non-kosher with the NMI in order to
>> work with the 6809's slow clock.
>>
>>
> Maybe it's not the speed of the RAM, but a case of one or more half-bad RAM
> chips.  DECB normally uses only the lower 32K of RAM while OS9 uses all 64K.
>
> Darren
>
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