"CP/M compatible" vs. "MS-DOS Compatible" machines?

[Roger Ivie]

On Fri, 1 Feb 2008, Allison wrote:
>
> Done right it was portable.  However I encounterd at least one system
> where the BIOS calls were unusuable for 8bit serial because every
> transaction in or out was masked with 07Fh..

Which is consistent with the manual:

"All simple character I/O operations are assumed to be performed in
ASCII, upper- and lower-case, with high-order (parity bit) set to zero."

(from the section 6 of the CP/M 2.2 manual)

-- 
roger ivie
rivie at ridgenet.net