Unformatted text preview: or RTI command. This command returns control to back to the main program that is was called from if possible and restores Accumulators A and B, index registers X and Y, the program counters, and condition code register from the stack. The X bit of the CCR register may be cleared as a result of the command. E6-12. Why does the 68HC11 need to be reset when the power supply is too low? Low power supply requires a reset to ensure that EEPROM is not corrupted. This also ensures that voltage is at proper levels before letting the unit power back on....
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- Spring '11
- Central processing unit, X86, Interrupt handler, interrupt service routines