SCREEN

Return screen format
Function AddressDescription
SCREEN FFEDReturn screen format

This routine returns the format of the screen, e.g., 40 columns in X and 25 lines in Y. The routine can be used to determine what machine a program is running on. This function has been implemented on the Commodore 64 to help upward compatibility of your programs.

Example:
JSRSCREEN
STXMAXCOL
STYMAXROW