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9 lines
447 B
9 lines
447 B
2 years ago
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Exercise 5.18: Modify the make-register
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procedure of 5.2.1 so that registers can be traced. Registers
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should accept messages that turn tracing on and off. When a register is
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traced, assigning a value to the register should print the name of the
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register, the old contents of the register, and the new contents being
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assigned. Extend the interface to the machine model to permit you to turn
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tracing on and off for designated machine registers.
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