[sebhc] STICK PARITY
CarrollWaddell at sc.rr.com
Tue Jul 6 15:26:34 CDT 2004
Thanks a bunch.
Walter Moore wrote:
>> While working on my new H19 emulation program, I ran into a term I'm
>> not familiar with. STICK PARITY. It is an option set by the DIP
>> switches in the H19. I know that the parity bit can be missing, (N),
>> even parity (E), odd parity (O), mark (M) or space (S), but what is
>> Is it some form of Mark or Space?
> Yes. This is how they get mark and space. With the 8250, when you
> select Stick Parity, the parity bit is transmitted and received in the
> opposite state of the parity select bit (and switch). So if you
> select "Even Parity" and "Stick Parity", you will get a space,. "Odd
> Parity" and "Stick Parity" should give you a mark.
> Check out the Line Control Register, bit 3 (Parity Enable), bit 4
> (Even Parity Select) and bit 5 (Stick Parity) in either the H8-4
> manual or the H-47 manual.
> Delivered by the SEBHC Mailing List
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