Here's a couple of programs you can type in at the Applesoft prompt:
Code:
10 HOME $ = CHR$(4)
20 PRINT D$"IN#4"
30 INPUT A,B,C
40 PRINT D$"IN#0"
50 VTAB 10: PRINT A,B,C
60 GOTO 20
Control-C to exit.
Code:
10 HOME : D$ = CHR$(4)
20 PRINT D$ ; "PR#4" : PRINT CHR$(1) : REM INIT
30 PRINT D$ ; "PR#0"
40 PRINT D$ ; "IN#4"
50 INPUT "" ; X ,Y, S
60 VTAB 10 : PRINT X ; " "Y" "S" "
70 IF S > 0 THEN 50
80 PRINT D$ ; "IN#0"
90 PRINT D$ ; "PR#4" : PRINT CHR$(0)
100 PRINT D$ ; "PR#0"