MP5

123456789101112131415
Across
  1. 1. Universal Asynchronous Receiver Transmitter
  2. 3. Interrupt Request Register
  3. 5. used to demultiplex higher byte address
  4. 8. when no signal is requesting service
  5. 9. SPENAL Fully Nested Mode
  6. 11. Data transfer in both direction but not simultaneously
  7. 12. Interrupt Service Register
  8. 13. channel 0 has the highest priority and channel 3 has lowest priority
  9. 14. This is an active low input
Down
  1. 2. service gets lowest priority and channel next to it gets highest priority
  2. 4. used for extend the memory
  3. 6. Fully Nested Mode
  4. 7. Address enable
  5. 10. Data transfer in both direction simultaneously
  6. 15. End of Interrupts