Chipsea microcontroller division operation

;============================================
; filename: division operation .asm
; chip: CSU1182B
; author:Hu Qin
; date: 2013-02-21
;Full code download:
http://www.51hei.com/f/xhrfys.rar;=========== =================================
include CSU1182B.inc
;============ ================================
; program start
;============== ==============================
  ORG 000h
  GOTO CF01
  ORG 015H
CF01:
  MOVLW 0FFH;
  MOVWF 0B7H; High 8 bits of dividend
  MOVLW 0FFH ;
  MOVWF 0B8H ; The lower 8 bits of the dividend
 
  MOVLW 00H ;
  MOVWF 0B9H ; The high bit of the remainder (data register for dividend processing)
  MOVLW 00H ;
  MOVWF 0BAH ; The low bit of the remainder (data register for dividend processing)               
 
  MOVLW 00H ;
  MOVWF 0BBH ; The low 8 bits of the dividend
  MOVLW 00H ;
  MOVWF 0BCH ; 8 - bit high quotient
 
  MOVLW 03H ; MOVWF 0BDH ; 8   -
  bit low-order
  divisor MOVLW 0E8H ;
  MOVWF 0BEH ; 8-bit high-order   divisor   MOVLW 
 
  16 ,1 ;   RLF 0BAH,1 ; Process dividend data with carry   RLF 0B9H,1 ;   BCF STATUS,C ; Clear C   MOVFW 0BEH ;   SUBWF 0BAH,0 ; Use the processed dividend to subtract the divisor   MOVWF 0C1H ;   MOVFW 0BDH ;   SUBWFC 0B9H, 0 ; Use the processed dividend to subtract the divisor   MOVWF 0C0H ;   BTFSS STATUS,C ; Determine whether the processed dividend is larger than the divisor   GOTO CF03 ;   MOVFW 0C1H ; If so, save the quotient to the dividend processing data register   MOVWF 0BAH ;   MOVFW 0C0H ;   MOVWF 0B9H ; CF03:     RLF 0BCH,1; Shift the subtracted C left into the quotient register   RLF 0BBH,1;   DECFSZ 0BFH,1; Determine whether the operation is completed   GOTO CF02;   GOTO $   end ;=========== =================================