Re: 6809 assembly knowledge needed

From: Rainer Buchty <>
Date: Wed, 3 Feb 2010 00:23:21 +0100 (CET)
Message-ID: <>
On Tue, 2 Feb 2010, wrote:

> IIRC it was one of the CBM-Hackers that pointed me out to the 6809E 
> which you have to provide with Q and E. But it seems that these are 
> rare. I have lot of 68x09's but only lately I found by acident a 6809E 
> (and I have still to desolder it). IMHO it is doable but would it 
> create enough interest?

6809E are typically available from synthesizer parts sellers as it was 
used in several 1980's machines.

And then there's System09, a compatible VHDL model of the 6809:

OHO-Elektronik's GODIL module even makes drop-in replacements 
for ancient 5V technology possible:

What is really scarce, though, is the 6309(E), i.e. Hitachis improved 
version of the 6809(E). You probably have to recycle Yamaha DX7s for 
harvesting these...

> Software shouldn't be a problem IMHO: FLEX.

Plus, 6502 and 6809 are almost sourcecode-compatible, so anything which 
was written for 6502 could be (unelegantly, but easily) automatically 
converted into 6809 mnemonics and reassembled.


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Received on 2010-02-03 00:00:03

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