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Commodore BASIC
|
1995-03-30
|
543b
|
19 lines
50395 REM **********************
50396 REM * MODUL PUNKT SETZEN *
50397 REM **********************
50398 REM X= X-KOORDINATE DES PUNKTES
50399 REM Y= Y-KOORDINATE DES PUNKTES
50400 GR=320*INT(Y/8)+(Y AND 7)+(8*INT(X/8))+8192:REM ADRESSE
50410 MS=2^(7-(X AND 7)):REM BITMASKE
50420 POKE GR,PEEK(GR)OR MS
50430 RETURN
50495 REM ************************
50496 REM * MODUL PUNKT LOESCHEN *
50497 REM ************************
50498 REM X= X-KOORDINATE DES PUNKTES
50499 REM Y= Y-KOORDINATE DES PUNKTES
50500 GR=320*INT(Y/8)+(Y AND 7)+(8*INT(X/8))+8192:REM ADRESSE
50510 MS=2^(7-(X AND 7)):REM BITMASKE
50520 POKE GR,PEEK(GR)AND(255-MS)
50530 RETURN