MattisLind
Veteran Member
I have spent some time with my lab pdp-8/a lately.
By using switching PSUs it is much lighter to carry around in the lab which is nice. But since it is an 8A100 chassis it lacks the E-connector to support hex wide core memories. I did put a 20V PSU and a -5V PSU from the very beginning so it has now become time to create that little board that should be sitting where there are two holes to the right in the chassis.
I spent some time yesterday working on the CAD layout for the board that would hold five ECS connectors. I also included the four bank select lines to allow for 128 k memory.
![6X4sJqJl.jpg](https://i.imgur.com/6X4sJqJl.jpg)
By using switching PSUs it is much lighter to carry around in the lab which is nice. But since it is an 8A100 chassis it lacks the E-connector to support hex wide core memories. I did put a 20V PSU and a -5V PSU from the very beginning so it has now become time to create that little board that should be sitting where there are two holes to the right in the chassis.
I spent some time yesterday working on the CAD layout for the board that would hold five ECS connectors. I also included the four bank select lines to allow for 128 k memory.