Available on: c128 c64 to8 pc128op

DOUBLE BUFFER

The DOUBLE BUFFER instruction activates, where available, the double buffering functionality. The double buffering is the use of more than one buffer to hold a screen data. So that a "reader" will see a complete (though perhaps old) version of the data, rather than a partially updated version of the data being created. It is very commonly used for computer display images.

SYNTAX

 DOUBLE BUFFER


Legend
  • id : identifier
  • type : datatype
  • v : value
  • "..." : string
  • [...] : optional

EXAMPLE

 DOUBLE BUFFER


ABBREVIATION: Db Bf

Join BASIC 10Liner Contest with ugBASIC!

An interesting competition is held at the beginning of each year: the BASIC 10Liner Contest. It is possible to use ugBASIC to participate in the next "BASIC10Liner" competition, in the following categories:

  • PUR-120 - A game in 10 lines of max 120 characters (w/abbrev.)
  • EXTREME-256 - A game in 10 lines of max 256 characters (w/abbrev.)
  • SCHAU - Any program in 10 lines of max 256 characters (w/abbrev.)
In order to reduce space you can use this abbreviation for this instruction:

DOUBLE BUFFER ↔ Db Bf

Any problem?

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