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seg0 == 0x10                 ;//靜態(tài)變量
seg1 == 0x11
seg2 == 0x12
seg3 == 0x13
seg4 == 0x14
seg5 == 0x15
seg6 == 0x16
seg7 == 0x17
LCD_scan_status  == 0x18
LCD_scan_counter == 0x19

LCD_scan_temp    == 0x1a     ;//動(dòng)態(tài)變量
seg_TEMP         == 0x1b
com_temp         == 0x1c

            !seg_port=0        ;//seg_port為outport

LCD_drive()
            SEG_temp=0xff
            com_temp=0xff
            LCD_scan_temp=LCD_scan_counter
            _if LCD_scan_temp!=0
            goto ld1
            jbc seg0,0           ;//COM0
            bc  SEG_temp,0
            jbc seg1,0
            bc  SEG_temp,1
            jbc seg2,0
            bc  SEG_temp,2
            jbc seg3,0
            bc  SEG_temp,3
            jbc seg4,0
            bc  SEG_temp,4
            jbc seg5,0
            bc  SEG_temp,5
            jbc seg6,0
            bc  SEG_temp,6
            jbc seg7,0
            bc  SEG_temp,7
            bc  com_temp,0
ld1:
            _if --LCD_scan_temp!=0
            goto ld2
            jbc seg0,1            ;//COM1