davyK Posted April 22, 2012 Author Share Posted April 22, 2012 (edited) Yep - same deal with River Raid - need to be a bit more careful and take my time. Works OK now on my Harmony and in Stella...have replaced the ROM on my site and have redownloaded it and tested it on my Harmony and Stella again..... Apologies again people... EDIT : Just amended the Demon Attack ASM to use the relative jump instead of the absolute JMP as suggested by Nukey and it seems to work OK - the ROM is uploaded onto my site (and redownloaded and tested in Harmony and Stella!) It will be some time before I'm good enough to spot these tricks myself Nukey! Edited April 22, 2012 by davyK Quote Link to comment Share on other sites More sharing options...
PFL Posted April 22, 2012 Share Posted April 22, 2012 Thank you very much for sharing the ROM's in the first place. No need to apologise for doing something I couldn't even begin to fathom! Quote Link to comment Share on other sites More sharing options...
davyK Posted April 22, 2012 Author Share Posted April 22, 2012 No probs man - but believe me - if you have a programming background and you have some knowledge of assembler this isn't all that hard to do - the real hard work has been done by those creating the disassamblies in the first place...all I am doing is making a few tweaks..hope you enjoy them. Quote Link to comment Share on other sites More sharing options...
PFL Posted April 23, 2012 Share Posted April 23, 2012 The only programming I've ever done was a bit of BASIC back in the good old days... and I've forgotten all of that! Quote Link to comment Share on other sites More sharing options...
davyK Posted April 23, 2012 Author Share Posted April 23, 2012 (edited) Its amazing how much better some of these games are at 60Hz - especially an action game like Demon Attack or Asteroids - the increased speed and display actually makes them feel like new games....and it's actually a bit annoying to think I paid £30 for some games back in the early-to-mid 80s for a pretty poor version of them. Edited April 23, 2012 by davyK Quote Link to comment Share on other sites More sharing options...
davyK Posted September 18, 2012 Author Share Posted September 18, 2012 Here's a PAL60 version of Space Invaders..Wow - this really makes a big difference - faster and lovely big clear graphics.... http://www.davykelly.com/SpaceInvadersPAL60.bin I did this using DiStella to create a basic disassembly (which cleverly has a good guess at what is data and code) - then by using the Stella debugger I can identify where the colour values are in the ROM and change to the PAL equivalents. So you can expect to see some more now that I don't need quality assemblies to do this!! 2 Quote Link to comment Share on other sites More sharing options...
davyK Posted September 21, 2012 Author Share Posted September 21, 2012 (edited) Just finished a PAL60 version of Atlantis. This was one of my favourites back in the day. I clocked this even on game 2 when I was a teenager. This one took a bit longer because there are lots of colours to remap - it being an Imagic game with their trademark use of colour - even for them this was a colourful one. Same deal - looks better and plays a bit faster. http://www.davykelly.com/atlantisPAL60.bin Edited September 21, 2012 by davyK 2 Quote Link to comment Share on other sites More sharing options...
PFL Posted October 8, 2012 Share Posted October 8, 2012 Hiya. I was just wondering would you consider doing PAL 60 version of Kevin's hacks found here: http://www.atariage.com/forums/topic/154984-hack-project-thread-galaxian-arcade-double-dragon-xenophobe-etc/page__hl__%20galaxian%20%20arcade I've asked him in that thread if he could possibly do it but I'm aware that he's already done a lot of work on some of these ROMs and asking him to do more might just piss him off! PAL 60 versions of, for example, Galaxian Arcade would be great... Quote Link to comment Share on other sites More sharing options...
davyK Posted October 8, 2012 Author Share Posted October 8, 2012 (edited) Working on Keystone Kapers at present - nearly completed that one....will look at the Galaxian Arcade hack after that... EDIT:just looked at the ASM of Galaxian Arcade - has already been done - just need to reasssemble it with certain flag values set... Edited October 8, 2012 by davyK Quote Link to comment Share on other sites More sharing options...
PFL Posted October 9, 2012 Share Posted October 9, 2012 Too cool! You, sir, are my hero! Quote Link to comment Share on other sites More sharing options...
davyK Posted October 9, 2012 Author Share Posted October 9, 2012 Here's the ROM for PAL60 Galaxian Arcade http://www.davykelly.com/GalaxianArcadePAL60.bin 1 Quote Link to comment Share on other sites More sharing options...
PFL Posted October 9, 2012 Share Posted October 9, 2012 Thank you very much. I'll be playing this tomorrow on my shiny 'new' light sixer that should arrive in the morning. Quote Link to comment Share on other sites More sharing options...
davyK Posted October 9, 2012 Author Share Posted October 9, 2012 (edited) No probs - enjoy - the real work was done by Nukey Shay and Kevin on this...excellent job - didn't know about this one - I can see me putting some time in on this one as well. Putting the final touches to Keystone Kapers is proving a bit of a bitch - some colour values seem to have double use and changing them to PAL equivalents is causing some really odd little problems - nearly there though! Edited October 9, 2012 by davyK Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted October 11, 2012 Share Posted October 11, 2012 I already did that one, too. You can find it (and the disassembly) in the Supercharger hacks thread. IIRC, the comparison value used at $F985 must be the same value as the data table color chosen at $FEE4, $FEE8, $FEEC, and $FEF0...or it won't work right. Quote Link to comment Share on other sites More sharing options...
davyK Posted October 12, 2012 Author Share Posted October 12, 2012 (edited) hmmmm....thought I had checked that thread... Still - it's good for me to doing these as I'm learning a little bit each time. EDIT: Just back from looking through that thread - an awesome resource there. Its funny comparing your PAL60 version of Keystone Kapers to mine - I got the floor colours matching the 2 tones of yellow for the fake 3D look (you have yellow and gray) but you got the radar display using the 2 tones of yellow and I couldn't get that going - have yellow and gray instead on the radar display!!! Had just the aeroplane to go (still white in my version) but yeah - some real weird effects when changing colour values due to data sharing - at one point I had the escalators moving around on the radar scope - weird. I also had my colours for escalators and radios dark green too - but I moved to using the purple/blue colour as its closer to the actual PAL version. Think my cop is closer to the PAL version too but then I was stumped at the aeroplane.... excellent tip there about the branch - will check that out. (and the rest of the supercharger hack thread). I take it this thread is for people with a Supercharger and not a Harmony cart? Edited October 12, 2012 by davyK Quote Link to comment Share on other sites More sharing options...
Nukey Shay Posted October 13, 2012 Share Posted October 13, 2012 I've removed the conditions that caused the original games to fail on an unmodded Supercharger (when the program counter or a data byte trips $FFF8...which is used by the Supercharger for it's own bankswitching). Most often, it was just a matter of relocating a data table or program routine by reclaiming romspace earlier in the program...but there are a few other reasons that a game may fail. Mystique/Playaround games used a checksum routine on startup which read all 4k bytes, for example ($FFF8 included). Some may include other alterations as well. Such as correcting a scanline count to an even or stable number (color is lost in PAL if using an odd count). Or additions of my own (like 2600/7800 console detection so the B&W console switch works properly). The romfiles in the thread are playable on anything that can load 4k roms. Quote Link to comment Share on other sites More sharing options...
davyK Posted October 13, 2012 Author Share Posted October 13, 2012 cool. You've been busy. Quote Link to comment Share on other sites More sharing options...
davyK Posted November 4, 2012 Author Share Posted November 4, 2012 (edited) PAL60 version of Keystone Kapers. Nukey Shay did this previously so there's a link to that in the hacks thread.... Here's mine which is a bit different - small compromises are made in both versions re accuracy because this game uses a lot of shared data...still they are both so close as to make no real difference. Here's my version for what it's worth http://www.davykelly...KapersPAL60.bin As usual the PAL60 version runs faster and the image is larger and the game is all the better for it. Edited November 4, 2012 by davyK 1 Quote Link to comment Share on other sites More sharing options...
bataais Posted August 18, 2013 Share Posted August 18, 2013 As it is the only way for us PAL gamers to play at original speed & (nearby) colors, I converted some more roms to PAL60. Stargunner only has adjusted scanlines to 262, to prevent going PAL-TVs into BW. Someone should dedicate a webpage for all the PAL60 hacks around. Beamrider_PAL60.bin ChampionshipSoccer_PAL60.bin MissileCommand_PAL60.bin Mouse Trap_PAL60.bin Stargunner_PAL60.bin StarMaster_PAL60.bin StarVoyager_PAL60.bin StellarTrack_PAL60.bin VideoOlympics_PongSports_PAL60.bin 1 Quote Link to comment Share on other sites More sharing options...
PFL Posted August 18, 2013 Share Posted August 18, 2013 davyK hosts his conversions here: http://www.davykelly.com/ Maybe if you asked him he'd host the other PAL60 conversions too. Quote Link to comment Share on other sites More sharing options...
bataais Posted August 19, 2013 Share Posted August 19, 2013 Hmm.. Missed some colors in Beamrider. Converted it again, this time taking the PAL rom and changing only the timer and scanlines. And while on it, I converted some of the better 16K roms to PAL60. Enjoy the speed increase Beamrider_PAL60_V2.bin Jr. Pac-Man_PAL60.bin Midnight Magic_PAL60.bin Solaris_PAL60.bin 1 Quote Link to comment Share on other sites More sharing options...
bataais Posted August 19, 2013 Share Posted August 19, 2013 And 2 more (simple) hacks: Ms. Pac-Man_PAL60.bin Stargate_PAL60.bin 1 Quote Link to comment Share on other sites More sharing options...
bataais Posted August 19, 2013 Share Posted August 19, 2013 Sorry, Beamrider_V2_PAL60.bin above is no good, timer adjustments alone don't seem to work for this one. Quote Link to comment Share on other sites More sharing options...
bataais Posted August 20, 2013 Share Posted August 20, 2013 Again, 2 more. Nobody seems to care. Should I go on converting & posting? Donkey Kong_PAL60.bin Enduro_PAL60.bin 3 Quote Link to comment Share on other sites More sharing options...
PFL Posted August 20, 2013 Share Posted August 20, 2013 No, no, carry on if you're enjoying it. I've downloaded every one and stuck them on my Harmony. In fact, the only reason I saw your last post was because I was checking for Beamrider updates. PS: I hit the Like button on the above post. 1 Quote Link to comment Share on other sites More sharing options...
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