• C51 Some problems
    I mean a code running on my target. The target port P5 initialized as an input port: ... P5MDOUT = 0x00; P5=0xFF; ... Then there is such fragment in my program: ... TXbuffer[2] = str[P5...
  • C51 : Old program and some question
    Hello I am working in a medical company they give me a program for At89C55wd when i want to debug the project,its message is : error 56 : cant open file what is you opinion about this? and...
  • Some memory problems on RTX-full?
    Hi all. Can anyone help with the following strange problem? I have a target with T89C51RD2 and external (on board) SRAM and parallel EEPROM. I also use the RTX51-full OS. For the past few days my code...
  • C51/LX51: Place some variables in a specific page apart
    Hello, I am working on a project based on a C8051F353 from Silabs. This project needs some non-volatile variables to be stored, using internal Flash. I manage to read, write, and erase data to...
  • some problem when using ASM in C
    when I use asm in C,I always see the error A45: undefined symbol.So what do I have to do?