This is revision A of the EMDP3 DIP48Z adaptor and it is currently a work in progress.
The DIP48Z adaptor is used to program parts that come in standard DIP packages from DIP-8 through DIP-48.
The DIP48Z adaptor has two 37-pin "D" connectors on each side of the box that are used to route the programmer bus through it.
The DIP48Z adaptor has a 48-pin ZIF socket on it.
The DIP48Z adaptor has two 2×25 DIN sockets that are used for rewiring purposes.
The DIP48Z has 24-bits of shift register to provide identification information. The retriggerable one-shot causes the shift registers to be loaded.