[1]https://github.com/schlae/32plcc-plug
   # 32-pin PLCC Plug and Interposer
   Ever need to probe the address and data lines of a ROM chip while it is
   connected in another circuit board? Or maybe you want to build a board
   to emulate a ROM chip using a microcontroller or something. Here's a
   solution: a 3D-printable 32-pin PLCC plug that can be paired up with an
   optional interposer circuit board.
   ![32-pin PLCC plug and interposer
   photo]([2]https://github.com/schlae/32plcc-plug/blob/main/32plcc.jpg)
   Some of the compatible ROM chips include:
   - 27C256
   - 27C512
   - 27C010
   - 48F010
   - 27C020
   - 39VF010
   ## The plug
   The plug body can easily be printed with a standard FDM printer. I use
   an Ender 3 with the detail set to low.
   After the print, you may need to clear out the holes and widen them
   slightly with a pushpin. They are sized so that square pins from a 0.1"
   header will fit into them. If you salvage the pins from a right angle
   header, you won't even need to worry about bending them.
   Be very careful when soldering the plug since the plastic melts very
   easily. Use a lower temperature setting on your soldering iron, and
   consider using a low melting point solder such as Chip Quik.
   [Plug STL
   file]([3]https://github.com/schlae/32plcc-plug/blob/main/32plccplug1.ST
   L)
   ## The interposer board
   One way to use this plug is to solder it to an interposer board which
   makes it easy to probe pin connections with a ROM chip connected in a
   pass-through arrangement. Of course, you can use it for whatever you
   want, borrowing the footprint from the interposer board design.
   The headers around the edges of the board are designed for standard
   0.1" header pins which can be connected to logic analyzer probes.
   ## License
   This work is licensed under a Creative Commons Attribution-ShareAlike
   4.0
   International License. See
   [[4]https://creativecommons.org/licenses/by-sa/4.0/](https://creativeco
   mmons.org/licenses/by-sa/4.0/).

References

   1. https://github.com/schlae/32plcc-plug
   2. https://github.com/schlae/32plcc-plug/blob/main/32plcc.jpg
   3. https://github.com/schlae/32plcc-plug/blob/main/32plccplug1.STL
   4. https://creativecommons.org/licenses/by-sa/4.0/](https://creativecommons.org/licenses/by-sa/4.0/)