It would definitely be good to know, Fred, as that way I can do a new layout for a Speech-in-the-Box board.
Programmed a GAL20V8.
A have two of those RAVE 99 speech in the box cards.
The first one is original and tested this with the original PAL20L8 which works fine off course but with my GAL20V8 the TI system hangs.
The second one must have been in my Geneve system in the 90's because the 7805 voltage regulator has been removed. Also pin #14 end pin #15 of the PAL is not conected but these pins are connected together on the PCB. Tried this one on my TI99 system and there were problems, also the speech synthesizer thought so because every CALL SAY() gave me as much UHOH's as characters in the phrase.
Replaced the PAL20L8 by the GAL20V8 ... same result, the speech synthesizer only want to say UHOH. Then I saw that the databus buffer chip was a 74HC645 on a socket, replaced this one for a 74HCT245 and now the speech syntheziser can't stop talking (HELLO, #TEXAS INSTRUMENTS#) so I switched of the system ... my poor ears
Result: The above code for the GAL20v8 does work, but pin #14 and pin#15 of the GAL must be outside of the socket and these pins must be connected on the PCB.
This has something to do whith the RDYO and RDYI signals.