NEC 78K0S/KA1+ User Manual page 316

An example of a program when the interrupt-disabled time (from write to internal verify) should be minimized in self
programming mode is shown below.
;---------------------------------------------------------------------
;START
;---------------------------------------------------------------------
; Sets write command
FlashWrite:
MOVW HL,#DataAdrTop ; Sets address at which data to be written is located
MOVW DE,#WriteAdr
FlashWriteLoop:
MOV FLCMD,#05H
MOV A,D
MOV FLAPH,A
MOV A,E
MOV FLAPL,A
MOV A,[HL]
MOV FLW,A
CALL !ModeOn
; Execution of write command
MOV PFS,#00H
MOV WDTE,#0ACH
HALT
MOV A,PFS
CMP A,#00H
BNZ $StatusError
CALL !ModeOff
MOV MK0,#INT_MK0
MOV MK1,#INT_MK1
EI
; Judgment of writing all data
INCW HL
MOVW AX,HL
CMPW AX,#DataAdrBtm ; Performs internal verify processing
BNC $FlashVerify
INCW DE
BR FlashWriteLoop
316
CHAPTER 18 FLASH MEMORY
; Sets address at which data is to be written
; Sets flash control command (byte write)
; Sets address at which data is to be written
; Sets address at which data is to be written
; Sets data to be written
; Shift to self programming mode
; Clears flash status register
; Clears & restarts WDT
; Self programming is started
; Checks write error
; Performs abnormal termination processing when an error
; occurs.
; Shift to normal mode
; Restores interrupt mask flag
; Address at which data to be written is located + 1
; if write of all data is completed
; Address at which data is to be written + 1
User's Manual U16898EJ3V0UD