I realized how difficult it is to get hold of 27C400/27C200 PROMS compared to the much
more common 27C4002.
To remedy this I designed a
small adapter board, which will be ordered asap. (Board designed to fit Olimex 10mil DRU).
Of course, the design is freeware, and comes with no warranties whatsoever
I'm also including the custom librarys used in this design.
Have fun!
/Eriond