6809 transistor count?
hilpert at cs.ubc.ca
Tue Jun 1 02:57:27 CDT 2010
> Ben wrote:
> > Dave McGuire wrote:
> >> Can anyone tell me the approximate transistor count of the 6809?
> > Well for a ballpark figure I would double the 6800 transistor count.
> > 2x microcode rom & 2x registers.
> > http://www.techheap.com/processors/6809/the_6809.pdf
> > I get about 40K transistors as ball park figure.
> Thanks for that link; I love reading stuff like that. I'll admit I've
> not diligently researched all the possibilities, but of all the
> 8-bitters I've ever encountered, the 6809 is definitely my favorite.
> The only problem I have with that pdf file is, with my Foxit reader
> anyway, all the pictures are blank. I need to go try it with Adobe to
> see if that matters.
>Any one else have that problem?
Yes, I can't see them either - using an old version of Acrobat Reader.
Fun read, nice that they spent some time on the history of logic development.
We've mentioned the breadboarding of the 6809 or 68000 design on the list
previously, but seeing it written up in a period article does make the whole
notion of breadboarding a new micro-processor design in TTL sound very quaint today.
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