Compare 8085 and 8086 microprocessor by their internal architecture.

Comparison between 8085 & 8086 Microprocessor

(i) Size: 8085 is 8-bit microprocessor, whereas 8086 is 16-bit microprocessor.

(ii) Address Bus: 8085 has 16-bit address bus while 8086 has 20-bit address bus.

(iii) Memory: 8085 can access up to 64Kb, whereas 8086 can access up to 1 Mb of memory.

(iv) Instruction: 8085 doesn't have an instruction queue, whereas 8086 has an instruction queue.

(v) Pipelining: 8085 doesn't support a pipelined architecture while 8086 supports a pipelined architecture.

(vi) I/O: 8085 can address 2⁸ = 256 I/O’s whereas 8086 can access 2¹⁶ = 65,536 I/O’s. 

(vii) Cost: The cost of 8085 is low whereas that of 8086 is high.