IF (MID$(a$,t3,1)) = "0" THEN t3 = t3 + 1 : GOTO zeroloop
IF (ASC(MID$(a$,t3,1)) > 47 AND ASC(MID$(a$,t3,1)) < 59) OR (ASC(MID$(a$,t3,1)) > 64 AND ASC(MID$(a$,t3,1)) < 71) THEN a$ = LEFT$(a$,t-1) + RIGHT$(a$,LEN(a$)-t3+1) : t = t3 + 1
notnow2:
NEXT
chars$ = ""
t = 1
charloop:
IF MID$(a$,t,1) = " " THEN t = t + 1
IF MID$(a$,t,1) = " " THEN GOTO exitcharloop
FOR tc = 1 TO 2
n = ASC(MID$(a$,t,1))
IF n > 64 AND n < 71 THEN n = 16 * (n - 55) ELSE n = 16 * (n - 48)
t = t + 1
n2 = ASC(MID$(a$,t,1))
IF n2 > 64 AND n2 < 71 THEN n2 = n2 - 55 ELSE n2 = n2 - 48
n = n + n2
IF n < 32 OR n > 127 or n = 34 or n = 39 or n = 64 or n = 94 THEN n = 126