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 GmbH 1987 - 2004 *** WARNING C500 IN LINE 1 OF foo.c: MISSING DEVICE (PORT IS BUSY) When I disable listing file (i.e. NOPR), it works well. But When I want C51 produce listing files, it fails and error messages is as above. Does any one know how to fix it? Thx for your help.
Yes, I have something plugged in parallel port. After I remove it, it becomes WARNING C500 : MISSING DEVICE :SECURITY KEY NOT FOUND.. Is it because I use C51.exe in shell (of winXP)instead of uVision2 to develop? Thank you for your reply.
"Yes, I have something plugged in parallel port" Is that "something" a Keil C51 hardware key (or "dongle")? You need to read this thread - about dongles: http://www.keil.com/forum/docs/thread2369.asp "Is it because I use C51.exe in shell (of winXP) instead of uVision2 to develop?" That shouldn't make any difference - but have you tried it, as I asked before? Note that XP (like NT) might require a driver to be installed for the dongle - see that thread again: http://www.keil.com/forum/docs/thread2369.asp
Thank you for your help. I know what you mean now. With Kind Regards Jay