Solid State Music - PB1  EPROM Programmer Board
This was a very useful board. There were few ways to program EPROM's at the time.

The board had two sockets . The left one for 2708 EPROMS the right one for 2716 (5V) EPROM's. All programming voltages were generated on board.  The EPROMS could be locate at any 4K Boundary. The board also had 4 separate sockets for permanent 2708 or 2715 EPROMS that could be located at any 8K boundary above 8000H.   Up to four wait states could be added for EPROM access.
 
Example 8080 code was provided in the manual for EPROM burning.
The manual for this board can be obtained here.