Wickeycolumbus Posted February 15, 2010 Share Posted February 15, 2010 I believe we now know exactly why some games do not work on the FB2. Chris (cd-w) on the Harmony team figured out that the FB2 never sets A12 to zero on the cart port. This seems to have at least two effects: any game which relies on zero-page hotspots (Tigervision 3F for example) will never switch banks on the FB2. Second, any reads or writes to TIA locations will be appear on the cart as Superchip writes ($F0xx) and will write spurious values to Superchip RAM. The lack of A12 changes will likely also affect Supercharger, FA, E7, CommaVid, and other RAM games. Strange, my '3E3F' bank switching scheme seems to work fine on an FB2 and uses zero page hot spots. Are writes only affected? That is possible. Chris could have been testing for A12 after a write and not a read. If only writes are affected, 3F and FE would still fail. I tried it out again yesterday, and it did not work. I could have sworn that it did, perhaps I am remembering wrong. Quote Link to comment Share on other sites More sharing options...
MRB2011 Posted June 25, 2011 Share Posted June 25, 2011 Thanks for making this list! A lot of my favorites are listed as working, so I am going to attempt the mod. Does anyone know if Gravitar works or not? Thanks! Quote Link to comment Share on other sites More sharing options...
pimpmaul69 Posted December 3, 2011 Share Posted December 3, 2011 (edited) Using a Harmony cartridge these following games were working. Activision Checkers Activision Decathlon - Does not need fixed ver. - My actual cart did not work when i tried it. Astroblast - Only glitch is bottom line of right number is misplaced. Not sure if that was all that was wrong before. Bermuda Triangle Berzerk - My actual cart did not work when i tried it. Berzerk VE Boxing - My actual cart did not work when i tried it. Conquest of Mars Crazy Climber - Not sure what original graphic glitches were. H.E.R.O. Jungle Hunt - Did not notice any graphical glitches. Quadrun - Has sound. No clue how to play. Robot Tank - Does not need fixed rom. Secret Agent - Loads and plays. No clue how to move or if it is a glitch. Snow White - Appears to work fine for me. Space Shuttle Note: Pitfall II loads. It just has graphical glitches Edited December 3, 2011 by pimpmaul69 Quote Link to comment Share on other sites More sharing options...
pimpmaul69 Posted December 3, 2011 Share Posted December 3, 2011 Thanks for making this list! A lot of my favorites are listed as working, so I am going to attempt the mod. Does anyone know if Gravitar works or not? Thanks! Gravitar works at least on my Harmony cart. Quote Link to comment Share on other sites More sharing options...
pimpmaul69 Posted December 4, 2011 Share Posted December 4, 2011 (edited) Also forgot to mention that gremlins works perfect on the harmony cart as well. blue print works for me as well. although i have no clue what i am supposed to do. Also water world plays fine for me on harmony. not sure where the problem is as i do not own the original, but i tested rom on both fb2 and a 2600. all seemed the same. airlock works. title screen rolls however. main game fine. All the supercharger roms of course do not work. Edited December 4, 2011 by pimpmaul69 Quote Link to comment Share on other sites More sharing options...
pimpmaul69 Posted December 4, 2011 Share Posted December 4, 2011 (edited) found out my airlock cart is the same. game is completely playable. only title screen rolls Edited December 4, 2011 by pimpmaul69 Quote Link to comment Share on other sites More sharing options...
pimpmaul69 Posted December 4, 2011 Share Posted December 4, 2011 fatal run works. it looks as bad as air raid on my lcd. Quote Link to comment Share on other sites More sharing options...
+wongojack Posted September 9, 2012 Share Posted September 9, 2012 Happened to be testing carts on my FB2+ mod and was using Seaquest. It does not seem to work - The sound seems to be loading but the screen is jumbled. I didn't try to actually play. Quote Link to comment Share on other sites More sharing options...
CarlH Posted October 1, 2014 Share Posted October 1, 2014 Doe's anyone know if the TAZ! cart is working for modded FB 2's and where can I get an Atari 2600 cart port from ?, I have looked at AA's store but they are not listed there . I figured I would do an FB2 mod since I got one for 1.99 at a thrift store in Ottawa Ks. Thank you in advance for the info. CH Quote Link to comment Share on other sites More sharing options...
hizzy Posted July 22, 2020 Share Posted July 22, 2020 Does the harmony cart work on the modded FB2? Quote Link to comment Share on other sites More sharing options...
+wongojack Posted July 22, 2020 Share Posted July 22, 2020 Yes Quote Link to comment Share on other sites More sharing options...
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