[Info-vax] C limitations, was: Re: VMS process communication

[Johnny Billquist]

On 2023-04-13 11:12, Jan-Erik Söderholm wrote:
> Den 2023-04-12 kl. 18:26, skrev bill:
> 
>> But that is only during communications.  I am not aware of any program
>> that computed the value of a character in transit and cared what that
>> value was.  Pr1me set the values in their firmware forcing all programs
>> in any language to deal with an ASCII set that had values from 128 to
>> 255.
> 
> 
> Now, if the highest bit really was a parity bit, you would end up with
> values in the whole range 0-255, depending on the number of 1's in the
> lower 7 bits.
> 
> But maybe that wasn't a real parity bit...

Depends on what kind of parity you are using...
With even or odd parity and 7 bits of data, you are correct. With mark 
or space parity, you are incorrect.

   Johnny