25 Aug
2021
25 Aug
'21
5:45 p.m.
On Aug 25, 2021, at 10:16 AM, Paul Koning via cctalk
<cctalk at classiccmp.org> wrote:
I have near zero PDP-11 Unix experience, but I remember one flavor (BSD 2.11 ?) which set
the top bit in its alleged ASCII output, which of course would break any terminal
expecting actual 8 bit coding.
I discovered working with Unix V6 on my '11/45 that its tty output driver is hard
coded to always cook bit 8 as a parity bit, for any character where bit 8 is not already
set (see Lions, line 8522).
--FritzM.