• More external memory than 64k
    Hello. I am curious why there is a limitation of 64k on the C251 compiler, when the device can handle up to 256k? Is there a way around this?
  • code_size>64K with C51 => code_size<=64K with CX51?
    Hi all, We are using the C51 with OPTIMIZE (9, SIZE) and we have a problem the code space. The question is : if we change to CX51 and use OPTIMIZE (11, SIZE) , do you think we can save some code...
  • how to use external program/data memory address up to 64k/1M?
    Hi, I got a chip from WINBOND, w78c438c. It claims that it support 64kb program/1MB data memory space for applications which need additional external memory to store large amount of data . does...
  • The extern and non-extern variables
    Hi, As I was in the progress of learning 8051(specifically F340 uC from Silabs) with Keil C51 compiler. I came across this extern variable. This is what happen, hope somebody can enlighten me: In...
  • passing 64k boundary
    Hi, I'm working on a project that will have an array that will cross the 64k boundary (and may even be larger then 64k. Of course, the problems comes when adding something like 100 when it points...