Yup. I have done the same kind of thing with GALs (which offer the convenience of re-programming, though not the longevity of a PAL.)
Did this as a backup for the Signetics chips on a Mark 8. You can see them in this Flickr stream - I had both "normal" and open collector variants, and designed both chip-specific and generic boards for chip replacement (I expect to run into the issue with DTL as well). https://www.flickr.com/photos/100660569@N02/albums/72157635953237715 BTW, I sent my PCBs out to Gold Phoenix PCB - http://www.goldphoenixpcb.com/ JRJ On 9/3/2015 10:49 PM, dwight wrote: > A pal could have worked as well. > Dwight > > >
