Discuss a general purpose registers


Discuss the below:

Zilog Z8000 microprocessor family

direct port addressing capability

16 bit port address is part of the instruction

indirect port addressing capability referencing one of the 16-bit general purpose registers, which contains the port address.

Q: How many ports can the Z8000 address in each I/O addressing mode?

1?
2^16?
32768?

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Computer Engineering: Discuss a general purpose registers
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