...Re-post without pic... Old m100 takes a non-standard pinout, new m100 and all t102 takes a standard 27C256 pinout.
I just did an old m100 using this plcc adapter: https://oshpark.com/shared_projects/toQDqmVV I burned the Tandy 102 rom with y2k patches from the rex page on bitchin100. The board is easy to assemble except the only hitch is you have to find pin headers that have thinner round pins rather than the more common square. If you have a "new" m100, the chip number on the rom will not match the number silkscreened on this board. In that case you don't need any adapter, just put in a 27C256 dip28 directly, same as for T102. https://goo.gl/photos/GUKXgxxVGaUVt57k9 -- bkw
