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I don't want to buy a $200 eeprom programmer to flash this chip so trying to rig one myself from an arduino. I need 16 bits for address and another 8 for data, plus a control signal or two, which is more pins than my arduino has. So I'm also including a partially complete buffer board from my Z80 computer project to buffer the data and address busses

not only did this not work but i blew up my cheap ebay power supply😬

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@voxel oh man, that sucks!

I have a TL866 which you can buy new from all over the place pretty cheap. You can program all sorts of things with it - and many sellers in China also include lots of converter boards.

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Merveilles

Merveilles is a community project aimed at the establishment of new ways of speaking, seeing and organizing information — A culture that seeks augmentation through the arts of engineering and design. A warm welcome to any like-minded people who feel these ideals resonate with them.