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Help me design the instruction register in VHDL of 4 bit microprocessor

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scorrpeio

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I want to build 4 bit microprocessor in vhdl.
Can anybody help in designing the instruction register?
The total mnenomics to be constructed are 16.

Any help/ any suggesion regarding this topic is welcome.

Thank you in advance
 

Re: 4 bit microprocessor

POST the specifications for the 4 bit microcontroller. We will help!
 

Re: 4 bit microprocessor

The 4 bit microprocessor should be able to handle 4 bit data.
I want it to have basic 16 instructions(mnenomics), for which i want to design instruction reg.,prog cntr,stack ptr,memory,& 4 bit alu.
In short this programmed cpld will be little brother of microprocessor IC 8085.
Thank you for reply.
 

Re: 4 bit microprocessor

I referred the url you suggested. But it is the program given in it and not design part for mp. I want designing of the parts i have specified.
Thank you for help.
 

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