My Raise the Devil is a B-revision TMS1100, so it's certainly possible that Black Knight is, too. Is it a full-size 28-pin DIP or the smaller shrink DIP? If it's the SDIP, then it's probably not a B.
I just double-checked, and my RTD had a B-revision in an SDIP. But as LN said, I'm not sure if Bs were still made in '82. I'll check some Microvision carts that I have.
