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Results tagged with 8085
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user 35530
An eight bit microprocessor made by Intel in 1976.
0
votes
What happens in an 8085 if HOLD, READY, and RESET requests are received at the same time?
It depends.
The RESET, HOLD and READY signals are sampled at different times in the T-states, which is explained in the appropriate manual.
Why are you using an almost 40-year-old microcontroller migh …
1
vote
DAA operation in 8085 microprocessor
You cannot arrive at that condition from an addition of two valid BCD numbers. The largest possible LS nibbles are 9, so that means the largest possible LS result with a nibble carry is 2. So it's a m …
2
votes
Why is there no tri-state during T2 state of this machine cycle?
Compare this 8085 timing diagram:
Note that the lower order address persists past the rising edge of the clock, so there is lots of setup time and a bit of hold time available to latch the lower order …
1
vote
Does an ALU always do add and sub, but only returns one of the results?
There are different instructions in an 8085 instruction set for 8-bit adds and subtracts (and none for multiply- it's a very primitive processor). …
2
votes
Accepted
Programming an EPROM using 8085 kit
Usually those kits include a monitor program and some kind of battery-backed RAM.
You are going to have to find an instruction manual and read it however, since you will need access to instructions …