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/diy/ - Do-It-Yourself


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>> No.2039027 [View]
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Could anyone give any advice on how to design my own 4-bit microcontroller for a calculator? Where do I begin? Any similar *well-documented* and simple chips to draw inspiration from? How many registers do I use? How long to make the instructions (8-bit?)? How many nibbles of RAM is enough for a basic 10-digit calculator? How deep to make the function stack?
Currently trying to write some algorithms in C to get familiar with BCD math algorithms.

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