readport.asm

VCP201_CODE is a FPGA source code.

;===========================================
; File Name : READPORT.ASM
; 2109 ASIC VCP201-01
; Rev:   Date:    Author:     Reason:
;===========================================
readport:
        movlw   0xff
        movwf   pb_raw0
        movwf   pb_raw1
        movlw   0xf0
        iorwf   fn_button,F
	iorwf	pb_l3_r3,F
     
        btfss   p1d,0
        bcf     pb_raw1,BIT_ST

        btfss	p1d,1
        bcf	pb_raw1,BIT_SEL

        btfss	p1d,2
        bcf	r_mode_bit

        btfss   p1d,4
        bcf     r_pgm_bit

        btfss	p1d,5
        bcf	r_auto_bit

	btfsc	f_arcade	
	return

check_LR3:
        btfss	p1d,3
        bcf	r_R3_bit

        btfss	p1d,6
        bcf	r_L3_bit


        return