Writing Interrupts in C

• The C compiler takes care of everything

  • Pushing/popping the right registers (PSW, ACC, etc.)
  • Generating the RTI instruction
  • No arguments/no return valuesunsigned int count;unsigned char second;void timer0 (void) interrupt 1 using 2 { if (++count == 4000) { second++; count = 0; }}
  • Timer mode 2
  • Reload value = 6

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