Acorn BBC (model A/B) solderless 27C512 (64kB) EPROM adapter kit. Plug & play | eBay
Texas Instruments TMS2532 - 1979 Vintage; EPROM - used in #1ESS switch from Western Electric. For those not familiar the #1ESS was used as a local switch in the Bell System later
EPROM-Switcher 27C512 Modul inkl. Speicherbaustein wie Moates 2Timer zum Umschalten 27C256
EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums