adc_sub.a51

此程序是ＭＳＣ１２０３工程评估板ＭＣＵ原代码．此芯片精度高．内部包含ＭＣＵ

$NOMOD51
$include (reg1200.inc)
PUBLIC	unipolar
adc_sub 	SEGMENT  CODE
	RSEG  adc_sub
;;;;;;;;;;;;;;;;;;;;;
; unsigned long unipolar(void)
; return the 3 byte adres to R4567 (MSB~LSB)
; unsigned long int with R4=0
unipolar:
	mov	a,AIPOL
	jnb	acc.5,unipolar
	mov	r6,adresh
	mov	r7,adresm	; Only the most significant two bytes are taken as the DAC is 16 bit only.	
	mov	r5,adresl
	ret
end