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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: 3, Interesting) by KilroySmith on Monday May 22, @10:07PM
I had to fight the battle over write only registers with our chip designers one time. This was in the age when transistors on a a die were expensive; adding in the read circuitry for all the registers on chip made the die noticeably larger, thus noticeably more expensive. I haven’t seen such a thing in ages, because transistors are now remarkably cheap and that battle never needs to be fought.