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Unformatted text preview: two requests? 5. Suppose the ISA of a machine supports 16-bit wide instructions. The ISA includes two I/O instructions, IN and OUT with a 8-bit op-code and 8-bit immediate operand (constant operand). Given that each controller has one status register, one control register, one data-in register, and one data-out register, how many controllers can we address with this machine? Are there any hardware changes we can make to double the number of addressable controllers? 6. Textbook exercise 13.3...
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- Spring '11
- Operating Systems