Before I jump off and re-invent the wheel -- is there a boost library to help with manipulating hardware registers? What I'm hoping to come up with (somehow) is something like: class dev_registers { reg<uint32_t> reg0; bit<reg0, 0> b0; bit<reg0, 1> b1; reg<uint32_t> reg1; bit<reg1, 0> b3; bit<reg1, 1> b4; }; (The 0 and 1 are bit offsets. Integer masks like 0x0010 would work as well) The result would be a private members of type uint32_t called reg0, and reg1 (actually they can be called anything since they are private). And a set of public methods to set, clear, and test the bits. e.g. dev_registers sample; sample.b0.set(); sample.b3.clr(); It would be nice if the registers had a global clr like: sample.reg0.clr(); There are lots of alternative approaches like: sample.b0.assign(true); // set b0 to true (1) int val = sample.b0(); // test value of b0 The goal has a lot of constraints. The registers would need to be laid out properly without any extra overhead (assuming that I do not bump into normal C padding problems). It would also be nice if everything inline'd so the compiler could optimize things down to simple bit operations. Does boost have anything like that? I looked for "bit" and only found references to bitset. I also looked for "hardware" and "flag" and did not see anything. Thanks, Perry