getSensorData1:
    ; preserve status - begin
    push    PSW             ; Program PSW - program status word
    push    ACC
    push    DPH             ; Preserver DPTR - high & low byte
    push    DPL
    ; preserve status - end

    ; restore status
    pop     PSW             ; Restore PSW - before exit
    pop     ACC
    pop     DPH             ; Restore DPTR
    pop     DPL
    reti