; Boolean checks
DEF FALSE EQU 0
DEF TRUE EQU 1
; flag operations
const_def
const FLAG_RESET ; 0
const FLAG_SET ; 1
const FLAG_TEST ; 2
; input
DEF NO_INPUT EQU 0
; SGB command MLT_REQ can be used to detect SGB hardware
DEF JOYP_SGB_MLT_REQ EQU %00000011
