![EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums](http://forums.rennlist.com/upload/eprom_switcher_2.jpg)
EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums
![EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums](http://forums.rennlist.com/upload/eprom_switcher.jpg)
EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums
![EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums](http://forums.rennlist.com/upload/eprom_switcher_1.jpg)
EPROM switcher- Have separate street and race programs in your Motronic - Rennlist - Porsche Discussion Forums
![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=640&crop=smart&auto=webp&s=4ff5874f8268e5412deda4d615b15f5db2dc766f)
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 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://i.redd.it/texas-instruments-tms2532-1979-vintage-eprom-used-in-switch-v0-3nfr690ispva1.jpg?width=6800&format=pjpg&auto=webp&s=8537fae3f67aa0436633145d4f1878a2f1dd9392)
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 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://i.redd.it/texas-instruments-tms2532-1979-vintage-eprom-used-in-switch-v0-hc7hjgojspva1.jpg?width=6800&format=pjpg&auto=webp&s=bd6351abed3349aaf22cbde0e35018cc391253d4)
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
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