SRA / Ericsson
Code-Plug
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SRA / Ericsson C600
 
Replace the expensive and hard to find 27S13 BPROM with a reprogrammable 2716 EPROM.
Remove the bprom from the holder and attach a piece of Veroboard with a prom socket installed. Make the wire connections according to the diagram.
The plug adapter for reading the code plug content into the prom burner is made from a card connector and an eprom socket. The wire connections are similar to the eprom adapter.
 




Socket adapter for reading the content of a Code plug to the Prom burner

 

 



Programmer for BPROM

 

 



Wiring diagram for replacing the BPROM with a 2716/27C16 EPROM

 

 



Rebuild a Code plug holder to accept an EPROM socket

 

 




Code plug holder