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Patterns in Register Map Design

posted by janrinok on Monday May 22, @05:31PM   Printer-friendly

owl writes:

https://www.devever.net/~hl/regmap

If you've ever had to write a program which interfaces directly with hardware — perhaps while writing a program for an MCU or embedded system or a kernel driver — you may have noticed a few common patterns in register map behaviour and design. I'm not sure anyone has ever really collected them together, so I decided to make a list of all the ones I can think of.

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  • (Score: 4, Informative) by stormreaver on Monday May 22, @09:29PM

    by stormreaver (5101) on Monday May 22, @09:29PM (#1307466)

    6809 has 8 bit reg A and B connected to D.

    A more elegant CPU for a more civilized age. I had a CoCo 3 (which had the 6809) and an IBM Compatible (remember those?) with an 8088. The 6809 ran rings around the 8088, and did so at a small fraction of the CPU speed. The 6809 was a pleasure to program, and the 8088 was close to nightmarish by comparison. There were many times when programming the 8088 that I said out loud, "That's idiotic!" about the Intel instruction set.

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