Question: On a hypothetical processor , there is a direct port addressing capability, in which a 2 0 bit port address is part of the instruction,

On a hypothetical processor , there is a direct port addressing capability, in which a 20 bit port address is part of the instruction, and an indirect port addressing capability, in which the instruction references one of the 20-bit general purpose registers, which contains the port address. How many ports can the microprocessor address in each I/O addressing mode?

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