• dummy isr for unused interrupts
    Hello together, I'm using the XC866-Board from Infineon. As I don't use all the availible interrupts in my program I would like to simply overwrite the NOPs of the interrupt vectors with RETIs to...
  • ISR Overhead - Keil options?
    Hello, I am using a MSC1210Y5 just for reference. My question is about the ISR overhead of saving all the registers and other details when the an ISR is called. For example using sending 32 bytes...
  • 8051 Interrupt handling in Keil
    How to write C code in Keil MICRO VISION3 to jump to Interrupt Vector when interruptoccurs? (While writing code in C we are not mentioning anyRAM/ ROM address)
  • #if ISR
    I have created a very useful macro that will have disastrous results if it is used inside an ISR. A few years from now some unsuspecting soul (who could be me) will probably use it inside an ISR and spend...
  • Multiple ISRs (interrupt service routines)
    I'm using the Keil MCB900 eval board with a P89LPC938 at 7.3728MHz and the LPC900 development tools (demo version). I'm using most of Mark Odell's UART and Timer code. I have setup Timer 1 as the...