[Coco] Layout for the Marty Goodman PAL selector

[K. Pruitt]

Here's the wiring layout for the Marty Goodman PAL selector board I pulled 
from an MPI:



The PAL selector switch is wired as follows:



The wiring runs from the PAL socket on the MPI, to the PAL 5144, to the PAL 
5244.



Pin 1 of the PAL Socket, Pin 1 of the PAL 5144 and Pin 1 of the PAL 5244 are 
connected together. This same wiring scheme is performed for Pins 1-13 and 
Pins 17-20



Pin 1 to 1 to 1

Pin 2 to 2 to 2

Pin 3 to 3 to 3

and so on for pins 1-13 and pins 17-20.



Pins 14-16 are wired as follows:



PAL 14L4CN 8075144:



Pin 14 --.> Switch Terminal 3

Pin 15 --.> Switch Terminal 6

Pin 16 --.> Switch Terminal 9



PAL Socket in the MPI:



Pin 14 --.> Switch Terminal 2

Pin 15 --.> Switch Terminal 5

Pin 16 --.> Switch Terminal 8



PAL 14L4CN 8075244:



Pin 14 --.> Switch Terminal 1

Pin 15 --.> Switch Terminal 4

Pin 16 --.> Switch Terminal 7



The toggle switch is a C&K Components 7301 On-On 3PDT Solder Mount.



With the PAL 5144 selected, the MPI is configured for a Coco 1 and 2.

With the PAL 5244 selected, the MPI is configured for a Coco 3.



And that's it.



Pictures are online for reference if needed.