IEEE P1500’s wrapper
lWSI : Wrapper Serial Input
lWSO : Wrapper Serial Output
lWIP : Wrapper Interface Port
lWIR : Wrapper Instruction register
lWBR : Wrapper Boundary Register (made of Wrapper Boundary Cells)
lWBY : Wrapper Bypass Register
lWPI : Wrapper Parallel Input (Optional)
lWPO : Wrapper Parallel Output (Optional)