Re: 6502 Decimal mode

From: Richard Atkinson (
Date: 2000-07-25 14:03:55

On Tue, 25 Jul 2000, Marko Mäkelä wrote:

> Someone on the plus4 list asked how the addition and subtraction of
> invalid operands works in decimal mode.  I got this interesting follow-up
> to my answer.

I think we need an archive of the Commodore and MOS patents. I came across
the TED patent the other day and was quite impressed by how thorough it
was. Is funet a suitable place or not? I'm under the impression that space
is at a premium, otherwise Marko wouldn't keep deleting valuable schematic


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