||ADR||HEXADR||NAME||Description||OS
|58460|$E45C|SETVBV|Set system timers and interrupt vectors|both

Sets an interrupt vector or system timer vector. 

!!Usage:

Assembler 
{{{
LDX MSB
LDY LSB
LDA (value see table below)
JSR $E45C
}}}
Action!
{{{
PROC SETVBV=*$E45C(BYTE VECTOR,MSB,LSB)
RETURN
}}}


||Register||Value
|X|MSB
|Y|LSB
|A|vector to be changed, see below

||Value||Vector
|0|[VIMIRQ]
|1|[TIMCOUNT1]
|2|[TIMCOUNT2]
|3|[TIMCOUNT3]
|4|[TIMCOUNT4]
|5|[TIMCOUNT5]
|6|[VVBLKI]
|7|[VVBLKD]


----
see also: [VBI Vertical Blank Interrupt]