[Coco] Hey
John Kent
jekent at optusnet.com.au
Sun Sep 9 07:50:45 EDT 2012
Dear Jim,
I'm not sure which John you were referring too.
I'm afraid I haven't done much work on the FPGA 6809.
I was wanting to design a 16/32 bit version of the 6809 that had the
extra registers like the 6309.
i.e. E,F,W & Q.
The idea was that you'd still have the 8 bit A,B,E & F accumulators, and
16 bit D & W (?) accumulators,
and the 32 bit Q(?) accumulator, but the stack pointers, program
counters etc would be 32 bits.
I've tried to contact you directly via your comcast.net email address,
but my emails bounce.
John.
On 30/08/2012 10:54 AM, iggybeans at comcast.net wrote:
> Still hacking John?
> Been play with a Liber809 equipped Atari 130XE and a Parallax Propeller development board myself.
>
> Let me know what you've been up to.
>
> BTW - Is there a cycle exact FPGA implementation of the 6809?
>
> Jim Igou
>
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--
http://www.johnkent.com.au
http://members.optusnet.com.au/jekent
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