• variables values changes unexpectly
    I declare these variables: unsigned long idata xpaquetes,xbytes; unsigned long errors,PHY,CRC; I ran my progran and after 3 minutes the errors,PHY and CRC variables change to 0xaaaaaaaaaaaaaaaa...
  • Change the offset for the interrupt vector
    Hi I working with 89c669 and want to change the program start address to 0x016000h. But when I try to change the Interrupt vector to that address I get "Invalid Interrupt Vector Address !" Why can...
  • Changing an Interrupt Vector
    I have an application that uses CAPCOM Timer 0, and want to change the interrupt vector address during runtime to vector to another function. However, the CAPCOM Interrupt Vector Location is at 80h, which...
  • 32 bit variables with interrupt
    we must assume that we define a variable as the long (32bit). and so what happens on it's value when this variable is changed in main loop and exactly at this time an intrrupt occurs! can this variable...
  • Relocating Interrupt vectors without changing STARTUP.A51?
    Hi, I have built a boot loader which chooses the recent between 2 versions of the program burnt on the flash. The only problem is that I need 2 copies of the interrupt and reset vectors...one for each...