In the description of the Hack machine language in chapter 4, it is stated that in well-written programs a C-instruction that may cause a jump should not contain a reference to M, and vice versa. Discuss why this should be avoided.

Research the concept of interrupts in a computer. You may want to look into how the Z80 microprocessor handles interrupt. A good source of Z80 information is the Rodnay Zaks book, "How to Program the Z80."

FYI, The Z80 8 bit microprocessor has been in production for forty years. Knowledge of the Z80 is a great lead-in for further study in more complicated machines. Please provide references