Vintage PROM, EPROM, microcontroller chip programming service.   I can program a chip with your data file or clone your chips.

Chips shown are examples.  You may receive a functionally equivalent chip from a similar manufacturer.   If you require a specific manufacturer or exact chip number, please message me first. 

EPROMs are vintage erased/used. PROMs are new.

Use cases - Vintage computers, (Apple I, Apple II, Apple III), Ham radio, arcade games, test equipment, and many other vintage equipment use cases.

For chips that I don't have on hand, you can drop ship blanks to me. 

Message me with any questions and needs.    

https://bsgelectronics.com/signetics-bipolar-memory-cross-reference

https://bsgelectronics.com/prom-substitution-reference

Need a chip that I don't have listed?  Send me a message as I may be able to help.

Recently programmed chips

82s23, 74S188

82s123, IM5610, 6331, 74S288

82s129,  93427PC, 6301, IM5623, 74S287 AM27c020

8748H, 8755A, D8748H, D8755A

27SF512, 68HC705C8, 27c512