Being Thrifty like a Radio Ham
Oh right, I am an Amateur Radio Ham and being so we like to make reuse and recycle stuff wherever possible.
I'm taking the punt that I can successfully use a Pioneer Kit an external PSoC 4.
This is described stealthily in the Pioneer Kit User Guide in the Appendix A.4.
All that needs to be done is to replace the zero ohm resistors for R32, R33 and R34 (highlighted in the yellow in the photo below) with some jumpers or DIP switches.
These are tiny surface mount resistors and care must be taken not to stuff it up and brick it.
Source: PSoC Pioneer Kit User Guide Page 27
When the jumpers are removed the Additional Program Header becomes a programmer port and be used to program and debug external PSoC 4s.
When the jumpers are installed it reinstates its original function.