I'm just learning RTOS myself, when i execute the bl51.exe from a command line c:\keil\c51\bin\bl51 task0.obj, rtx51tiny as i found it in keil rtx51 tiny User's Guide , the following error occured. ***FATAL ERROR L210: I/O ERROR ON INPUT FILE EXCEPTION 0021H: PATH OR FILE NOT FOUND FILE: RTX51TINY what should i do to overcome the error?????
Does the file RTX51TINY exist on your system, and is it in the same folder as task0.obj ? If the file does not exist, then obviously it will be "NOT FOUND" ! If the is not in the same folder as task0.obj then, again, it will be "NOT FOUND" - until you tell the Linker where to find it!