Address Decoding Techniques In 8085 Pdf Editor

Address decoding techniques in 8085 pdf editor

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By using our site, you acknowledge that you have read and understand our Cookie Policy , Privacy Policy , and our Terms of Service. I have a problem for homework that has me stumped. The CS pins of both modules are in parallel with the gate.

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The pins of the modules are connected to A0-A10 of microprocessor. A11 is a don't care at logic 0 I have no idea what this means. The problem asks to identify the memory addresses.

Address decoding techniques in 8085 pdf editor

This is where I'm stumped. First of all, that's a range of Since that's in hex, I would think that gives only a range of bytes, which doesn't seem right.

Your Answer

There's a total of 16k between the two modules, so something seems to be wrong. I would think my problem is with the high order bits, which go through the NAND. Could someone point me in the right direction?

Address decoding techniques in 8085 pdf editor

I've included a diagram of the problem below. Note that each chip is only 4 bits wide.

8085 - 8259 Interfacing and Address Decoding - Bharat Acharya Education

The two of them operating in parallel — each connected to half of the data bus — give you 2K words of 8 bits each. Home Questions Tags Users Unanswered.

Interrupts in 8085

Asked 6 years, 9 months ago. Active 6 years, 9 months ago. Viewed 2k times. Chetan Bhargava 4, 5 5 gold badges 22 22 silver badges 37 37 bronze badges.

address decoding in 8085

There are 16k bits, which is 2k bytes. Joe Hass Joe Hass 7, 1 1 gold badge 20 20 silver badges 37 37 bronze badges. However this is NOT the answer to the question. The question answer is supposed to be what addresses the RAMs will look addressable to the With A11 a don't care the will be able to "see" the RAM area at another address ranges as well. Your challenge now is to figure out what that other range would be.

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Addressing Modes in 8085

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Address decoding techniques in 8085 pdf editor

Thank you, Shog9. Thank you, Robert Cartaino.

address decoding in 8085

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