I use DK51 V6.14 complier my program, but it can not execute cx51.exe,I device select philips's p87c51mc2.Complier show "can not execute d:\keil\c51\bin\cx51.exe".Please help me,thank you.
What is DK51? CX51.exe is a 32-bit executable; you're not trying to run it under MS-DOS (16-bit), are you?
What is DK51? See: http://www.keil.com/c51/dk51kit.htm CA51, DK51 and PK51 are avaliable...