NEC 78K0S/K 1+ Series Application Note page 39

; Initialize the port 13
;-------------------------------------------------------------------------------
MOV P13,
;-------------------------------------------------------------------------------
; Initialize the general-purpose register
;-------------------------------------------------------------------------------
MOVW HL,
;*******************************************************************************
;
; Main loop
;
;*******************************************************************************
MAIN_LOOP:
MOV A, P4
AND A, #00001001B
status
MOV L, A
the table address
MOV A, [HL]
MOV P2, A
BR $MAIN_LOOP
end
APPENDIX A PROGRAM LIST
#00000001B ; Set output latch of P130 as high
#LEDDATA ; Set the table address to the HL register
; Read switch-input status
; Set switch-input status to the lower 8 bits of
; Output the LED light
; Go to the MAIN_LOOP
Application Note U18752EJ2V0AN
; Mask the data except the switch-input
; Read LED output data from the table
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