Let us know when you get it fixed or get stuck. By the way, I just noticed that your program sets the CCTV variable but never uses it. Later the program uses the CCTP variable, uninitialized.
93 LET CCTV = CYCLES% * 595 ...122 LET CGTP = INT(CCTP + CLTP + CYTP+0.5) Perhaps CCTV is meant to be the same as CCTP? That’s not a problem on the Model T since it sees both of them as CC, but you may want to check your computers with other dialects of BASIC. —b9
