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Results tagged with 8085
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user 51939
An eight bit microprocessor made by Intel in 1976.
16
votes
does 8085 CPU have an extra register within ALU?
To answer the question, the 8085 has two extra registers in the ALU.
The 8085 has several "hidden" registers: a 16-bit WZ pair and two 8-bit ALU helper registers: ACT and TMP. … Details on the 8085 register set are here and details of the ALU are here. …
- 3,105
2
votes
Does an ALU always do add and sub, but only returns one of the results?
The 8085's ALU does only the operation you ask for, using a somewhat inscrutable collection of gates. … For more than you wanted to know about the 8085 ALU, see my article. Here's a diagram showing one bit of the 8085's ALU circuitry. …
- 3,105