[Coco] 68B09E on coco2

[Arthur Flexser]

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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