Description: Used for setting the <ScanLine> for which the horizontal blank occurs.
Required. Sets the scanline count in which the horizontal blank will occur. Valid range is 0 to 222 will be counted before execution + 1. If is set to 0, the horizontal interrupt will execute on each line. This value isn't recommended as the vertical interrupt will never occur.
On InterruptVBlank GoSub vb
On InterruptHBlank GoSub hb