Indirect Port Addressing
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.
How many ports can the Z8000 address in each I/O addressing mode?
1?
2^16?
32768?
https://brainmass.com/computer-science/programming-languages/indirect-port-addressing-147315
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With 3 bits, you can access 2^3 addresses.
Similarly here, you have 16 bits in the general purpose registers, which are used in the indirect addressing mode to address the ...
Solution Summary
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.
How many ports can the Z8000 address in each I/O addressing mode?