walter_J64bit Posted July 19, 2004 Share Posted July 19, 2004 I just got a supercharger what are some of things I can do with it and can I use on a 2600 jr.? Quote Link to comment Share on other sites More sharing options...
Tsukasa Posted July 19, 2004 Share Posted July 19, 2004 It will work on a jr. Until you mod it, you can use it to play supercharger games. Once modded, you can play any 2k or 4k game in modded mode, and any of the supercharger games in supercharger mode. Quote Link to comment Share on other sites More sharing options...
keilbaca Posted July 19, 2004 Share Posted July 19, 2004 Hmm... I'm liking that... all I need now is a supercharger... Quote Link to comment Share on other sites More sharing options...
Tsukasa Posted July 19, 2004 Share Posted July 19, 2004 I'd check ebay often, and you could post in the marketplace forum asking for one. Quote Link to comment Share on other sites More sharing options...
keilbaca Posted July 19, 2004 Share Posted July 19, 2004 Not right now... kinda broke... I really need to stop buying atari games and save up... Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted July 19, 2004 Share Posted July 19, 2004 Keep in mind that any 4k game will run on even an unmodded Supercharger...so long as the game program is not trying to access 1 (possibly 2) specific memory locations...$FFF8 and $FFF9. So the games that cannot be used can be -hacked- to work with it. Just free those locations by disassembly/alteration. To do so on every game would be a very big chore...so it's easier in the long run just to modify the Supercharger to ignore it's bankswitching method by toggling a manual switch. Quote Link to comment Share on other sites More sharing options...
ANTHONY ATARI Posted July 19, 2004 Share Posted July 19, 2004 you can sell it to me Quote Link to comment Share on other sites More sharing options...
keilbaca Posted July 19, 2004 Share Posted July 19, 2004 Keep in mind that any 4k game will run on even an unmodded Supercharger...so long as the game program is not trying to access 1 (possibly 2) specific memory locations...$FFF8 and $FFF9. So the games that cannot be used can be -hacked- to work with it. Just free those locations by disassembly/alteration. To do so on every game would be a very big chore...so it's easier in the long run just to modify the Supercharger to ignore it's bankswitching method by toggling a manual switch. So you mean rename all the $fff8's to say, $fff7's ifts not being used? sorry, i'm a newbie to 2600 programming. Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted July 20, 2004 Share Posted July 20, 2004 No...get whatever program instructions or tables that exist at those locations and move them someplace else. The Supercharger's 6k of memory is really 3 seperate "banks" of ram...2k each. The lowest bank is always active (the console always "sees" it), and the other 2 banks can be swapped (sort of like whatever is in 2 will now be in 3 and visa-versa). When you load a 4k game, only banks 1 and 2 hold the game...bank 3 is totally blank. Let's say that a table exists for a sprite character near the end of the rom... LFFF0: .byte $18 .byte $3C .byte $7E .byte $FF .byte $FF .byte $FF .byte $7E .byte $3C .byte $18 (BTW that's a circle-shaped sprite) That table is 9 bytes long...and ends right at memory location $FFF8. So when the program is reading from that table and putting the value into the scanline, the Supercharger will attempt to bankswitch when it's copying that 9th line. Using an instruction such as this... LDA LFFF0,X In that example, register X is being used as an offset. So each time the program encounters that line, the accumulator is given the value that exists at address LFFF0+the value of X. If X were equal to 8, the Supercharger will be reading from address $FFF8 and bankswitch (swap 2k areas #2 and #3) and crash the game (because nothing existed in #3...it was blank). The solution is to try to find an unused area of memory that you can move that entire table to. If no area is unused...you'll need to use a "sharing" trick to accomplish this. Copyright or title screen bitmaps are a possibility...since who cares what it looks like so long as the game plays But an even better solution it to try to find 2 tables that hold identical or nearly identical data...you only need 2 bytes...and "share" them. If the game is reading the game colors from a table, it might be easy to find an area of the program that has nearly the same sequence of byte values. If they are slightly different, it's no biggie...the game will still play (just look slightly different). Suffice to say, this type of hacking might be beyond the ability of somebody more comfortable with pixel-hacking only...but the only way to learn is to try disassembling and see how it turns out Quote Link to comment Share on other sites More sharing options...
walter_J64bit Posted July 20, 2004 Author Share Posted July 20, 2004 Thank's the mod look's easy hmmm I don't know if I want to mod it! the Supercharger is getting harder to find. Quote Link to comment Share on other sites More sharing options...
D.Yancey Posted July 20, 2004 Share Posted July 20, 2004 Elementary my dear Watson... Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted July 20, 2004 Share Posted July 20, 2004 It's supposed to be one of the easiest hardware modifications to do. I'd imagine that if you had electronics shop in high school, just one of those projects would be tougher By installing the toggle switch, you can disable the ability for banks 2 and 3 to swap positions just by flipping it. No bankswitch occurs...and the game doesn't crash. Quote Link to comment Share on other sites More sharing options...
keilbaca Posted July 20, 2004 Share Posted July 20, 2004 yep, really simple mod. Will do once i decide to get a supercharger. Thanks for the info and the mod. Quote Link to comment Share on other sites More sharing options...
vb_master Posted July 20, 2004 Share Posted July 20, 2004 Nukey, is there a list of what 4k games I can use on an unmodded Supercharger? I've been itching to play games other than Starpath games on my Supercharger. Quote Link to comment Share on other sites More sharing options...
dykesr Posted July 20, 2004 Share Posted July 20, 2004 what is the benefit of playing games on your super charger opposed to playing the real cart? RD Quote Link to comment Share on other sites More sharing options...
SS Posted July 20, 2004 Share Posted July 20, 2004 what is the benefit of playing games on your super charger opposed to playing the real cart? How many 9's and 10's do you own? Quote Link to comment Share on other sites More sharing options...
HermChase Posted July 20, 2004 Share Posted July 20, 2004 There is an unmodded list here: http://www.atariage.com/forums/viewtopic.p...ed+supercharger -------- Chase Hermsen Quote Link to comment Share on other sites More sharing options...
walter_J64bit Posted July 20, 2004 Author Share Posted July 20, 2004 There is an unmodded list here:http://www.atariage.com/forums/viewtopic.p...ed+supercharger -------- Chase Hermsen Hey this great on mod needed! Quote Link to comment Share on other sites More sharing options...
GrizzLee Posted July 20, 2004 Share Posted July 20, 2004 Oh, and don't forget about "Worship the Woodgrain" http://home.earthlink.net/~resqsoft/wtw.htm -Lee Quote Link to comment Share on other sites More sharing options...
bjk7382 Posted July 20, 2004 Share Posted July 20, 2004 I used my modified supercharger alot before I got my CC2 (I still have all the wav files of the compatible games on my HD also) I have since passed it along to another atariage member so it can still be used. Quote Link to comment Share on other sites More sharing options...
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