Comment by asveikau
7 hours ago
I think the pdp-10 could have 9 bit bytes, depending on decisions you made in the compiler. I notice it's hard to Google information about this though. People say lots of confusing, conflicting things. When I google pdp-10 byte size it says a c++ compiler chose to represent char as 36 bits.
PDP-10 byte size is not fixed. Bytes can be 0 to 36 bits wide. (Sure, 0 is not very useful; still legal.)
I don't think there is a C++ compiler for the PDP-10. One of the C compiler does have a 36-bit char type.