Since it's an 16L8 (and not an 'R' or 'V') you don't have to worry about any hidden internal states. Back around ~2003, Tim Lindquist and I reverse engineered the Capcom CPS2 B board PALs. I made a little wiring adapter for the 16L8 to be read as a 2716 EPROM. (Connect all the inputs to the 'address' lines and the outputs to the 'data' lines.) Reading the "2716" produced a binary file of all the possible input/output combinations. I extracted that as text and formatted it in to ABEL table format like: PAL CONVERTER ; Converting: cap_caw.bin... [ 0,0,0,0,0,0,0,0,0,0,0,0,0,0 ] -> [ 0,1,0,1 ]; [ 1,0,0,0,0,0,0,0,0,0,0,0,0,0 ] -> [ 0,1,0,1 ]; [ 0,1,0,0,0,0,0,0,0,0,0,0,0,0 ] -> [ 0,1,0,1 ]; [ 1,1,0,0,0,0,0,0,0,0,0,0,0,0 ] -> [ 0,1,0,1 ]; ... [ 0,0,1,1,1,1,1,1,1,1,1,1,1,1 ] -> [ 1,1,1,0 ]; [ 1,0,1,1,1,1,1,1,1,1,1,1,1,1 ] -> [ 1,1,1,0 ]; [ 0,1,1,1,1,1,1,1,1,1,1,1,1,1 ] -> [ 1,1,1,0 ]; [ 1,1,1,1,1,1,1,1,1,1,1,1,1,1 ] -> [ 1,1,1,0 ]; ...and then let the ABEL compiler reduce that to equations and a usable .JED for burning new parts. A pretty much automatic process that didn't really require any special 'pal cracking' capable hardware. The ABEL compiler also produced the intermediate equations which were much more compact than the big tables-- for example, ~2000 lines of the above stuff cooked down to: Y8 = (I4 & !I3 # I8 & !I4 & I10 # I4 & !I10 # !I8 & I4 # I7 # I6 # I5 # I2 # I1); Y6 = (I4 & I3 & I10 # I4 & !I3 & !I10 # I9 & I4 & I10 # !I8 & !I4 & !I10 # !I9 & !I8 & !I4 # I8 & I4 # !I7 # I6 # I5 # I2 # I1); Y4 = (I9 & I4 & !I3 # I4 & !I3 & !I10 # !I8 & I4 & I3 & I10 # !I7 & I4 & !I3 # !I7 & I4 & !I10 # I8 & I7 & I4 # I8 & !I7 & !I4 & I10 # !I8 & I7 & !I4 & !I10 # !I9 & !I8 & I7 & !I4 # I6 # I5 # I2 # I1); Y1 = (!I1); -Clay -----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Tony htbs Sent: Monday, March 16, 2015 12:23 PM To: 'Technical Tools Mail List' Subject: Re: [Techtoolslist] leland off road pal dump needed u85 U85 is the chip location I have the 2-22 u85 non track pac can you dump it if I get it to you Or can I dump it or get you a file I have several programmers I can get a 2-25 u85 trac pac but I need to get it back Where are you located Let me know thanks tony For Ivan Stewarts off road
The track pac should be 2-25
And non should be the 02-22
Pal16l8 is the chip
-----Original Message----- From: Techtoolslist [mailto:techtoolslist-bounces@flippers.com] On Behalf Of Fabrizio Vasile Sent: Monday, March 16, 2015 2:02 PM To: Technical Tools Mail List Subject: Re: [Techtoolslist] leland off road pal dump needed u85 Hi, sadly there no available dump of these PAL around.I'm a contributor of this PAL database: www.jammarcade.net and we haven't them too.If someone could provide us the chip we would be happy to dump them P.S. Could you tell me the exact location on PCB and label of this PAL?Maybe they are share with other Leland games.Thanks. Il 16/03/2015 18:09, Tony htbs ha scritto:
Ivan Stewarts off road
--- Questa e-mail รจ stata controllata per individuare virus con Avast antivirus. http://www.avast.com _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/ _______________________________________________ Techtoolslist mailing list Techtoolslist@flippers.com https://pairlist7.pair.net/mailman/listinfo/techtoolslist FTP site is: ftp://ttl.arcadetech.org/TTL/Test_Equipment Archive site: http://seven.pairlist.net/pipermail/techtoolslist/