An oblique view photo of a circuit board with a larger chip sitting on a tiny adapter board plugged in below.
https://files.mastodon.social/media_attachments/files/111/432/204/376/008/353/original/fcaf6522a11a1027.jpeg
Next is the Lisa PROM adapter which allows use of a EPROM as a 6309 PROM for use in the CPU and IO cards.
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