• SBUF physically two registers? and shift register
    My first question is regarding SBUF register of 8051. How come it is two registers while locations is only one i.e; 99H. we call SBUF physically two registers (write only and read only two separate distinct...
  • Understanding PC (R15) register [ARM7]
    Hi, In startup code the first instruction is: org 0x00 ldr pc,[pc,#24] and at offset address 0x20: org 0x20 dc32 ?cstartup What I don't understand here is, after the first instruction...
  • Need help in serial programming using SBUF register !!!!
    Actually I want to transmit 3 bits serially using AT89C51 micro-controller. I have written the code in ".c" file, using c programming trying to transmit the bits serially using SBUF register. ...
  • Reading A/D result register and output via SBUF
    Using Infineon XC866-4FR I am trying to read two A/D channel results and printing the outputs to SBUF. The results are 255 < result6 < 32607 and result7 always 0. Here is the code: #include ...
  • SBUF Funny!!
    This is a bit of funny one (see code below). Basically (1),(2),(3),(4),(5) and (6) all transmit their data successfully via SBUF. This was captured by Hyperterminal. However (7) only transmitted correctly...