• Declaring RAM areas for P89C668 (xdata problems)
    I believe I'm doing something incorrectly, probably relating to how I initialize and tell keil where RAM memory resides at. I'm using the latest version of uVision and C compiler. The P89C668 has 8k...
  • xdata declaration result in uncertain output
    hi there, i am danish working on the project which included 2 X 8 7-segment display,AT89S52 microcontroller, v to f converter which act as ADC 24c04 eeprom etc. as step by step developing the code all...
  • 89C51IC2 Xdata issue
    Hi , I m working on 89c51Ic2. I have created a variable like as below unsigned char xdata buffer1[256] ; unsigned char xdata buffer2[256]; void initBuffer(void) { unsigned char i=0; for(i=0;i...
  • xdata &expanded ram( xram)
    friends,i have interfaced 512k nvram to 89c668 (philips) but i dont know how to declare variables to xdata and xram.Is there any keyword to define variables seprately in xdata and xram at compile time...
  • enum external declaration and use
    Hi Folks, I am trying to use enum to define a set of named constants with values so that they can be used by multiple C files in my project. For example. I use the following snipet to define Months...