[Coco] 68B09E on coco2

[Cocodemus]

As i told you those chips are mislabelled. They are 6809 instead of 6809E (external clock). I have two of them and they dont work on cocos.

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> On Feb 8, 2015, at 3:38 AM, Arthur Flexser <flexser at fiu.edu> wrote:
> 
> To elaborate, all the pokes on the page you cite should almost certainly
> work as well on a 1 MHz 6809 as on a 2 MHz one.   Though you lose video on
> the non-address-dependent one on a CoCo 1 or 2 (but not on a CoCo 3.)
> 
> Art
> 
>> On Sun, Feb 8, 2015 at 2:44 AM, embsys dev <embsysdev at gmail.com> wrote:
>> 
>> After reading this
>> 
>> http://www.cs.unc.edu/~yakowenk/coco/text/speed.html
>> 
>> I understand what is technically possible, what is useful, and the
>> underlying reasons why.
>> 
>> Can anybody confirm that a *genuine* MC68B09E *should* boot a coco2 at
>> 0.89M?  If that is so, then it seems reasonable to conclude my chip is
>> mislabeled and order another from somewhere else.
>> 
>> 
>> 
>> 
>> 
>> 
>>> On Sat, Feb 7, 2015 at 10:39 PM, Arthur Flexser <flexser at fiu.edu> wrote:
>>> 
>>> I know of no advantage to using a 68B09E in a CoCo 1 or 2.  It does not
>>> allow "stable operation at 1.7 MHz".  The video at that speed will be
>> just
>>> as unstable as with a regular 6809.
>>> 
>>> Art
>>> 
>>>> On Sun, Feb 8, 2015 at 12:11 AM, embsys dev <embsysdev at gmail.com> wrote:
>>>> 
>>>> coco2, 26-3026 (socketed chips, melted kbd), 64k ram.
>>>> 
>>>> I recently bought an MC68B09E from Jameco, but when I swapped it in
>> all I
>>>> got was interesting colors and patterns, no sign on.  I understood
>>> (perhaps
>>>> wrongly?) this was a drop-in upgrade that would allow stable operation
>> at
>>>> 1.7MHz.  I noticed some list discussion about Jameco having mislabeled
>>>> chips,  any way to rule this in/out by inspection?
>>>> 
>>>> Comments and advice?
>>>> 
>>>> Thanks,
>>>> Darryl
>>>> 
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