Metadata
Author: WikiMatrix
Data
English[en]
While the BIOS video interface routines were adequate for rudimentary output, they were necessarily less efficient than direct hardware addressing, as they added extra processing; they did not have "string" output, but only character-by-character teletype output, and they inserted delays to prevent CGA hardware "snow" (a display artifact of CGA cards produced when writing directly to screen memory)——an especially bad artifact since they were called by IRQs, thus making multitasking very difficult.
Spanish[es]
Mientras que las rutinas de la BIOS para la interfaz de vídeo eran adecuadas par un manejo rudimentario, eran muy ineficaces; no había salida de cadena de caracteres (sólo salida carácter a carácter) y esto añade períodos de retardo para compensar el efecto nieve del hardware CGA (cuando en las tarjetas CGA se escribía directamente en la VRAM se mostraban artefactos en la pantalla) algo especialmente malo cuando se llaman via IRQs, lo que hace muy difícil la multitarea.