| 计算总和并存放在ADC_DH4T 和ADC_DL4(包括两个被清零的) CAL_AD_ADD:
 LDI TMP4,00H;清0
 LDA ADC_DL1,01H;取ADC_DL1值
 ADDM ADC_DL2,01H;ADC_DL1、ADC_DL2相加
 LDA ADC_DH1,01H;取ADC_DH1值
 ADCM ADC_DH2,01H;ADC_DH1、ADC_DH2相加(带进位)
 LDI TBR,00H;A=0
 ADCM TMP4,00H;相加后不是0吗(CY=0时)??????
 LDA ADC_DL2,01H
 ADDM ADC_DL3,01H
 LDA ADC_DH2,01H
 ADCM ADC_DH3,01H
 139
 LDI TBR,00H
 ADCM TMP4,00H
 LDA ADC_DL3,01H
 ADDM ADC_DL4,01H
 LDA ADC_DH3,01H
 ADCM ADC_DH4,01H
 LDI TBR,00H
 ADCM TMP4,00H
 是 如何计算总和的
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