• a!=b&0xff
    unsigned char a=0x12; unsigned char b=0x22; if(a!=b&0xff)//is not true,but why? a = 0; else b = 0;//execute this "a!=b" is true ,so “true &0xff ”should be true,I want to know the c51 compiler why...
  • Comparison of constant (checking if flash location is not 0xff)
    Hello, I have one application, where I store several copies of settings into internal flash. I made command "CAT" for list of all stored settings. To identify single store location as "empty" I simply...
  • Default 0xFF in unused flash memory (MOV R7,A)
    C8051F360 It has recently occured to me that the default instruction 0xFF that exists in all un-used flash memory is not a NOP instruction. I understand that flash memory just works that way...
  • Locating the RW and ZI load region
    I'm wanting to create a code image with the layout: 1 - Startup/Bootstrap 2 - Executable code 3 - (probable gap) 4 - Fixed location dispatch table 5 - (probably gap) 6 - Fixed location tables...
  • *** error 65: access violation at I:0x80 : no 'write' permission
    hi i am sam and i m new user to keil using a eval version. currently i m getting error as follows but after certain time and after some definte loop, plz help me to solve this problem. *** error...