• Compiler produces inefficient assembly code?
    I and a co-worker are programming an 8051 uController in C. Last week we were struggling with a poor perfomance time of our program. So I talked to the assembly guy and we figured that our way of software...
  • What's the C equivalent of NOP
    I will replace the assembler instruction "nop" by a C instruction. How do I made ?
  • Adding NOP at 0000h, revisited.
    I read the following document to add a NOP before the LJMP at address 0000h. ( http://www.keil.com/support/docs/1622.htm , Size 5,096 bytes, Jun 20, 2000) But, I'm still not clear on how to do it. I followed...
  • NOP Vs _nop_()?
    In one of my project I am talking with MX909 Driver IC with C51 ucontroller. To initialize MX909 if I write module in Assembly language it's working fine. Once I replaced with C same module it's not...
  • C calling to Assembly routine
    Hi, I'm trying to call an assembly (.a51) function from a C file. I had it working, but then now it refuses to work. I get an error *** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY...