SDB-1.1 is a compatible upgrade of SDB-1.0. It adds two
informative records, thanks to Matthieu Cattin, and includes
some rewording and clarification (especially about absence of
interrupts).

The repository also includes sdbfs, which was born as a separate
project. Such filesystem is already being used in our FMC flash
memories, based on the user-space tools included in this package.

The specification is at https://www.ohwr.org/project/fpga-config-space/uploads/fb0072056414d497e4ca370ec5c95b84/sdb-1.1.pdf