[Coco] Any reason to put a 6309 in a Coco2?
Neil Morrison
neilsmorr at hotpop.com
Thu Jan 1 19:42:56 EST 2004
Interesting. Microsoft was notorious for doing this with their ROM
Basics.
Neil
----- Original Message -----
From: "Arthur Flexser" <flexser at fiu.edu>
> I ran into one incompatibility when I installed the 6309, though it
was
> only because the software author broke the rules. He used an EXEC
in his
> Basic program that was to an address in the middle of an
instruction, but
> which worked okay with a 6809, which ignored the illegal opcode.
The 6309
> vectored this to its "illegal instruction" error handler, which
hadn't
> been initialized with any code to handle errors, so the program
crashed.
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