bitview
Set and clear bits, view in hex and dec, perform logic and arith
Bitview provides a way to set bits based on number, or to input a hex number and view the bits as they would appear in a register.
You can also format the bits. For example, a PCI configuration address consists of segment-bus-device-function, where segment is 16 bits, bus is 8 bits, device is 5 bits, and function is 3 bits. You can view a PCI configuration address in this format by inputting 16.8.5.3 in the format window and seeing the results in hex in the results window.
There is also...