E-bone first aims at interfacing an FPGA based PCIe Endpoint core to a collection of other cores. The E-bone release contains a number of general purpose cores within that scope. E-bone specifications cater for both a Control Interconnect and a Fast Transmitter. The Control Interconnect defines a 32 bit wide interconnection between a number of masters and slaves. The Fast Transmitter is a one way path (up to 256 bit wide) aiming at dumping large data sets to the root complex. E-bone is nevertheless not restricted to PCIe interfacing and may be used for developing sub-systems in others environments.