Mmm, feeling good - fixed a bug in a 1986 #Basic interpreter. One byte fix... one bit really.
#Acorn 's Basic IV for 32000, turns out USR was mis-coded, so with a bit of help from a friend, found the bad code and poked it into a better state.
10 REM PATCH BASIC CALL/USR
20 IF ?&563D=&67 THEN ?&563D=&E7

