classics Posted February 13, 2004 Share Posted February 13, 2004 Port of an Atari XL chess game. chess5200.zip Quote Link to comment Share on other sites More sharing options...
NE146 Posted February 13, 2004 Share Posted February 13, 2004 mmmmmmmmmmmmmmmmmmmm.............. Quote Link to comment Share on other sites More sharing options...
sku_u Posted February 13, 2004 Share Posted February 13, 2004 Awesome. It's about time the 5200 gets a Chess game Quote Link to comment Share on other sites More sharing options...
+Allan Posted February 13, 2004 Share Posted February 13, 2004 Very cool! Thanks. What chess game is this? Is this the one from Compute! magazine? Allan Quote Link to comment Share on other sites More sharing options...
classics Posted February 14, 2004 Author Share Posted February 14, 2004 I believe its parker brothers chess, I could be wrong though. I dont actually have the cart itself, I was working from a cart dump. I was going to do Atari's Computer Chess cart but it is just awful. BTW you can change the difficulty level on this game by pressing the 0 key. Quote Link to comment Share on other sites More sharing options...
jetset Posted February 14, 2004 Share Posted February 14, 2004 Awesome. It's about time the 5200 gets a Chess game Now what we need is pinball! Quote Link to comment Share on other sites More sharing options...
sku_u Posted February 14, 2004 Share Posted February 14, 2004 Awesome. It's about time the 5200 gets a Chess game Now what we need is pinball! Midnight Magic would be nice Quote Link to comment Share on other sites More sharing options...
ziggystar Posted February 14, 2004 Share Posted February 14, 2004 How are you guys doing these ports by the way? I have a unreleased prototype 8 bit game I'd like to port to the 5200 and release them at the same time. Are you using a disasembler and macros or something? Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted February 14, 2004 Share Posted February 14, 2004 The 5200 is really just a 16k Atari computer with the hardware registers moved around and analog controllers. So you would need to disassemble the game, reverse-engineer it so that the ram locations used will fit within the confines of the 5200's memory, change the input routines, and use the 5200's hardware equate table when it is compiled. Quote Link to comment Share on other sites More sharing options...
holygrailvideogames.com Posted February 14, 2004 Share Posted February 14, 2004 I would like to see Jawbreaker II on the 5200. I know that there have been some 8 bit games converted to play on the 5200. I would like to see a 5200 multicart with a large number of the old 8 bit computer games on it. Quote Link to comment Share on other sites More sharing options...
classics Posted February 14, 2004 Author Share Posted February 14, 2004 The process is basically dis-assemble, change to the 5200 equates, rewrite controller, keyboard and console key input routines. Then change anything that depends on XL/XE os services, shadow registers, interrupt vectors, etc. Create any missing services or change the code to work without them. If your unreleased game can run on a XL/XE in 16k mode I could convert it, possibly. No way to tell until I see it really. Some games are easy some are a PITA, depends on how they were written. I just did K-Star Patrol and it took about 4-5 hours, Chess and Crystal Castles probably took about the same amount of time. Pastfinder took a lot longer. Quote Link to comment Share on other sites More sharing options...
sku_u Posted February 14, 2004 Share Posted February 14, 2004 I would like to see Jawbreaker II on the 5200. I know that there have been some 8 bit games converted to play on the 5200. I would like to see a 5200 multicart with a large number of the old 8 bit computer games on it. There would be a lot of interest in an XL/XE port multicart. I know I'd get one. Quote Link to comment Share on other sites More sharing options...
classics Posted February 22, 2004 Author Share Posted February 22, 2004 Updated ROM image for Chess, works on both 5200 BIOS models. Steve chess.zip Quote Link to comment Share on other sites More sharing options...
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