VBI Vertical Blank Interrupt

NMIEN enable/disable non maskable interrupts (NMI's)

SETVBV sets an interrupt vector or system timer vector

XITVBV exit the vertical blank interrupt routine

SYSVBV vertical blank interrupt routine entry point

VVBLKI vector to the immediate vertical blank interrupt routine

VVBLKD vector to the deferred vertical blank interrupt routine

SYSVBL the vertical blank interrupt routine


see Interrupts, Topic list