• Issues with External RAM and xdata declaration ...
    Hi guys, I have my code defined in the uVision interface as LARGE and the memory model as SMALL, however, if I try to run the program with the memory model LARGE the program does not run (if everything...
  • DATA to XDATA issue
    Hi people, I've some troubles with some variables declaration. I'm using the old Keil compîler C51 V5.50. When writing : U8 u8CommandIndex=0; with U8 = unsigned char, it's ok. Now I want to...
  • XDATA
    Is it possible to access particular bit in xdata memory space without changig other bits' values (eg using ^).
  • Copy xdata to xdata
    How to copy array xbyte memory from one address(xdata) to another(xdata address) and use autoincrement DPTR to make it faster in Cx51? I have selected "use multiply DPTR register" in projects for target...
  • XDATA BANKING WITH AN XDATA PORT # FOR CODE AN XDATA
    PK51 KIT 7.0 ATMEL AT89S8252 (classic 8052 with 8 flash) I'M USING A HARDWARE THAT HAVE 16*32k code and 4*32k xdata. Bank switch is performed with xdata port 0x1400 for code and with port 0x1800 for...