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; enable timer interrupt
EnableInt_Timer:
ldh a, [rIE]
or 1 << INT_TIMER
ldh [rIE], a
ret
; enable vblank interrupt
EnableInt_VBlank:
ldh a, [rIE]
or 1 << INT_VBLANK
ldh [rIE], a
ret
; enable lcdc interrupt on hblank mode
EnableInt_HBlank:
ldh a, [rSTAT]
or 1 << STAT_MODE_HBLANK
ldh [rSTAT], a
xor a
ldh [rIF], a
ldh a, [rIE]
or 1 << INT_LCD_STAT
ldh [rIE], a
ret
; disable lcdc interrupt and the hblank mode trigger
DisableInt_HBlank:
ldh a, [rSTAT]
and ~(1 << STAT_MODE_HBLANK)
ldh [rSTAT], a
xor a
ldh [rIF], a
ldh a, [rIE]
and ~(1 << INT_LCD_STAT)
ldh [rIE], a
ret
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