[broken]Move code Moved files without any changes to easily track later changes.
IDCODE: - provide default manufacturer ID that is invalid according to spec - provide default for all MANUFACTURER, PART_NUMBER and VERSION
Don't use tri-state logic for TDO; introduce TDO_EN signal to indicate when TDO is valid. Add assert for conflicting TDO assignment.
Import the JTAG interface code as used for the Chips4Maker pilot Retro-uC This code has currently been tested in FPGA through a buspirate so should already be functional.