pwrupbut.asm

来自「VCP201_CODE is a FPGA source code.」· 汇编 代码 · 共 38 行

;----------------------------------
; pwr_up_but_chk:
; check the power-up button status,
; SEL+START --> l-r-axis swap
; L2+R1+O --> load default values.
;----------------------------------
pwr_up_but_chk:
	movf	pb_raw0,W
	xorlw	RESET_PB0
	btfss	STATUS,Z
	goto	check_swap
	movf	pb_raw1,W
	xorlw	RESET_PB1
	btfss	STATUS,Z
	goto	check_swap
	bsf	f_reset_ram
	
check_swap:
	movf	pb_raw0,W
	xorlw	SWAP_PB0
	btfss	STATUS,Z
	goto	end_pwr_up_but_chk
	movf	pb_raw1,W
	xorlw	SWAP_PB1
	btfss	STATUS,Z
	goto	end_pwr_up_but_chk
	bsf	f_alt_vr
        movlw   BEEP_1          	;BEEP 1 TIMES
        call    p_beep
        	
end_pwr_up_but_chk:
	btfss	p1d,7
        bsf	f_arcade

	return