• C51 V6.20 & V6.21 still have reported bug
    On Nov. 11, 2001, I sent in a C51 V6.20 bug report via e-mail to support.us@keil.com. I never received a response, so assumed Keil's policy was to silently introduce the bug fix in a subsequent update...
  • A compiler bug of Keil C V6.21
    #include <reg52.h> // Due to these two options, the // program always goes wrong. #pragma NOINTPROMOTE #pragma OPTIMIZE(7, SPEED) unsigned long xdata CommonValue; unsigned char xdata Result;...
  • A compiler bug of Keil C V6.21
    #include <reg52.h> // Due to these two options, the // program always goes wrong. #pragma NOINTPROMOTE #pragma OPTIMIZE(7, SPEED) unsigned long xdata CommonValue; unsigned char xdata Result;...
  • C51 V6.20 & V6.21 still have reported bug
    On Nov. 11, 2001, I sent in a C51 V6.20 bug report via e-mail to support.us@keil.com. I never received a response, so assumed Keil's policy was to silently introduce the bug fix in a subsequent update...
  • i copied old mesage about rs23
    Hallo everyone, I have problem with communication over serial port. This is what I am having problem with: I need to make communication with device which has usb on rs232 convertor and fifo...