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From: Grant Edwards <grant.b.edwards@gmail.com>
Subject: Re: Help porting newlib to a new CPU architecture (sorta)
Date: Wed, 7 Jul 2021 15:09:39 -0000 (UTC)
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On 2021-07-06, Joel Sherrill <joel@rtems.org> wrote:

> I think you might get some ideas from the old m6809 port of gcc
>
> http://vectrexc.malban.de/documentation/gcc-6809-documentation
>
> That was an 8 bit CPU with only 64k memory space if I remember everything
> correctly.

The 6809 el al could treat pairs of registers as 16-bit values for
some operations (similar to 8080/Z80). All of the C compilers I've
used for 68xx architecture relied heavily on those 16-bit
register-pair operations.

--
Grant