Raster interrupt
Computer interrupt in home computers triggered by video output
Summary
A raster interrupt is an interrupt signal in a legacy computer system which is used for display timing. It is usually, though not always, generated by a system's graphics chip as the scan lines of a frame are being readied to send to the monitor for display. The most basic implementation of a raster interrupt is the vertical blank interrupt.
Originally created by Crotalus horridus
12/27/2005, 1:16:15 PM
Modified
3/16/2026, 3:02:39 AM
Recent revisions
/* Commodore 64 (MOS Technology VIC-II chip, 1982) */ removed link renames
Partially reverted revision [[Special:Diff/1312305460|1312305460]] by [[Special:Contributions/89.164.206.186|89.164.206.186]] ([[User talk:89.164.206.186|talk]]) as the changed wording became to complex for ordinary readers.
/* See also */
/* Game Boy (PPU chip, 1989) */MOS:DUPLINK
/* IBM PCjr (Video Gate Array, 1984) */
/* Nintendo Entertainment System (PPU chip, 1983) */
Updated short description
/* IBM PCjr (Video Gate Array, 1984) */ typo: removed duplicated closing tag
/* IBM PCjr (Video Gate Array, 1984) */ improved reference by adding link to web.archive as fallback
/* ColecoVision and MSX (TMS9918 chip, 1979) */Word choice
/* Atari 8-bit computers (ANTIC chip, 1979) */Updated system name
Partially reverted last change as simpler is here better as it strongly increases readability. The sentences were already very complex.
/* X68000 (VSOP + VINAS chip, 1987) */
/* X68000 (VSOP + VINAS chip, 1987) */
/* ColecoVision and MSX (TMS9918 chip, 1979) */ Spelling/grammar/punctuation/typographical correction
/* Systems supporting raster interrupts */ Added link for 'Amiga'
