• 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:...
  • How can I optimize the xdata access with C51
    Hi there! I need to optimize the accessing the xdata memory (the speed) with C51. I am sending some files via modem and the transmission could be a bit faster. At present, I am reaching a transmission...
  • xdata access by #define
    I have to read a flash written by another program and am provided a file looking like this // data locations #define data1 0 #define data2 data1+0x100 ... I would like to use the file 'as is" but...
  • Problem about access values stored in xdata
    Dear sir,i use uVision IDE for 8051 ver 6.20c. I used AT89C81. My problem is, i want to store 25 integer value in an array called melody. When i tried to write code in following way, i get error "adress...