Floating point routines for the 6809

Eric Smith spacewar at gmail.com
Tue Mar 28 00:51:24 CDT 2017

On Mon, Mar 27, 2017 at 2:53 PM, Sean Conner via cctalk <
cctalk at classiccmp.org> wrote:

>   Some time ago I came across the MC6839 ROM which contains floating point
> routines for the 6809.  The documentation that came with it stated:
>         Written for Motorola by Joel Boney, 1980
>         Released into the public domain by Motorola in 1988
>         Docs and apps for Tandy Color Computer by Rich Kottke, 1989
>   What I haven't been able to find is the actual *source code* to the
> module.  Is it available anywhere?  I've been playing around the the MC6839
> on an emulator but having the source would clear up some issues I've been
> having with the code.


I haven't modified it to assemble with a readily available assembler, so I
don't know whether it assembles into the exact MC6839 ROM image.

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