![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 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](https://preview.redd.it/texas-instruments-tms2532-1979-vintage-eprom-used-in-switch-v0-6ujltqzfspva1.jpg?width=6800&format=pjpg&auto=webp&s=a519ece38a4045b1d23f1cc42e484a3fe59c550c)
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
![General Automation 31D70009A01 16 Series CMOS/EPROM Memory Switch Board: Amazon.com: Industrial & Scientific General Automation 31D70009A01 16 Series CMOS/EPROM Memory Switch Board: Amazon.com: Industrial & Scientific](https://m.media-amazon.com/images/I/51kzchzXx3L._AC_UF894,1000_QL80_.jpg)
General Automation 31D70009A01 16 Series CMOS/EPROM Memory Switch Board: Amazon.com: Industrial & Scientific
AMIGAstore™ on Twitter: "It (Eprom chip included) lets you switch between Kickstart ROM 3.1 & Kickstart ROM 3.2.1 using a switcher (included) Full configured Note: if you have an A500 rev5 or
![Kernal/ROM/EPROM switcher module/adapter for 2764 27128 27256 27512 DIP-28 ICs – ASA College: Florida Kernal/ROM/EPROM switcher module/adapter for 2764 27128 27256 27512 DIP-28 ICs – ASA College: Florida](https://i.ebayimg.com/images/g/haAAAOSwCXhkGOCe/s-l1600.jpg)
Kernal/ROM/EPROM switcher module/adapter for 2764 27128 27256 27512 DIP-28 ICs – ASA College: Florida
![Kernal/ROM/EPROM switcher module/adapter for 2764 27128 27256 27512 DIP-28 ICs – ASA College: Florida Kernal/ROM/EPROM switcher module/adapter for 2764 27128 27256 27512 DIP-28 ICs – ASA College: Florida](https://i.ebayimg.com/images/g/4eQAAOSw3jBkGQZJ/s-l1600.jpg)
Kernal/ROM/EPROM switcher module/adapter for 2764 27128 27256 27512 DIP-28 ICs – ASA College: Florida
![Kernal/ROM/EPROM switcher module/adapter for 2764 27128 27256 27512 DIP-28 ICs – ASA College: Florida Kernal/ROM/EPROM switcher module/adapter for 2764 27128 27256 27512 DIP-28 ICs – ASA College: Florida](https://i.ebayimg.com/images/g/5yYAAOSwVZxkGQZL/s-l1600.jpg)
Kernal/ROM/EPROM switcher module/adapter for 2764 27128 27256 27512 DIP-28 ICs – ASA College: Florida
![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 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](https://preview.redd.it/texas-instruments-tms2532-1979-vintage-eprom-used-in-switch-v0-hc7hjgojspva1.jpg?width=640&crop=smart&auto=webp&s=814e23084c185f92a03c0447a0b90c40150d82fb)