• How to access the XDATA
    My external EEPROM (I2C) is AT24C32. In our code the XDATA is about 400Bytes. How to seperate the Code (program) memory and Data memory, how to access the XDATA.
  • xdata access, how ?
    Dear sir, i am is a student in physic department,i use uVision IDE for 8051 ver 6.20c, build a single board computer, with core is AT89S52,one Dallas RTC 12C887,and an 8255 PPI, both (RTC & PPI) connected...
  • Xdata Variables not accessable
    Dear Experts, I am a newbie to Keil and using the PK51 development kit with Rev:9.03 to develop firmware for my CC2430 controller. The problem I am seeing is, when ever I create a large array (ex:...
  • C51/V6.22 OPTIMIZING-PROBLEM
    We currently use the µVision 1 environment includig C51/V5.xx. We now want to update to µVision-2 / C51 V6.22. Cause we want to be sure the new version works without any problems we are currently...
  • optimization problem of c51
    hi all I am working with keil ide. And cygnal 8051f120,my compiler version is 7.20, I am facing some problems with the optimization .my code size is above 36 kb, when I use optimization level default...