Infocom on PDP-11

vrs vrs at msn.com
Wed May 11 10:33:18 CDT 2005


From: "Allison" <ajp166 at bellatlantic.net>
> >The C data types only have minimum sizes.  Actual sizes are up to the
> >implementation.
> >The resulting C data types for a PDP-8  would be 12-bit char, 24 bit
> >short and int, 36 bit long.  As long as limits.h contains the correct
> >values and the sizeof() operator correctly returns 1, 2 and 3 for the
>
> What about byte as in 6bits.  Thats a valid item for PDP-8 as one
> intruction BSW swaps accumulator halfs.  Also much of the character
> IO was 6bit.

Afraid those would have to be user data types, as the C standards require 8
or more bits for "char".

I think they would be useful (even necessary) additions to a "C-like" system
programming language for the PDP-8, though.

    Vince



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