9bits was the byte size for the PDP-10, I believe
IBM360 and CDC6600
Na, the /360 was a plain 8 Bit/Byte machine, but I think you're
right about the CDC. AFAIR there was a Bull machine using 9 Bit Bytes,
and 18 Bit integers.
You sure about the CDC-6600? The complete word length was
60 bits, and I
seem to recall that for the purposes of characters, there were 10 6 bit
characters stored per word.
The PPUs were 12
bitters.