• WARNING C500 (PORT IS BUSY)
    Dear all, When I type, C:/Keil/C51/BIN/C51 foo.c DB OE NOCOND CD SB WL(1) NOAM INCDIR(a long list of include dir;) Error Message: C51 COMPILER V7.20 - SN: C1S7P-60655E COPYRIGHT KEIL ELEKTRONIK...
  • warning C500: Serial Number Expired
    Hi, I have just updated to C51 8.12 and now get this error with every C file in the project. I cannot find reference to this warning in the knowledge base. Only unrelated ones to dongles/ports that...
  • C500 compilation error
    Hi, I am developing Cypress USB FX2 firmware and using Keil IDE.While compiling my code I am facing following warning : WARNING C500 : MISSING DEVICE :SECURITY KEY NOT FOUND.. I looked in to...
  • warning C500: INCORRECT LICENSE ID CODE (LIC) IN 'TOOLS.INI'
    Hi We are working with a Novell Network, which Keil uVision 4.72.9 is distributed as a Bundle. We got over 30 stations, where our students are working with it. On one station we got the error message...
  • Warning 500: MISSING DEVICE (DRIVER NOT INSTALLED)
    Hello together, I have a problem with my dongle. I have new PC and there is no printer port any more, so I can't put in the sentinel. So I used an USB to parallel cable to insert our dongle, after...