+Apocalypse Posted October 25, 2022 Share Posted October 25, 2022 Hello. I have designed an adapter to play ColecoVision games on the Master System (through the SG-1000 compatibility mode, hence slightly off colours): To access the keypad maintain the PAUSE button on the console then the corresponding direction/button combination. Layout below: ------------ 06/04/2024 Hi everyone, We are building the stock for the initial release, please show your interest here so we have enough for everyone. Price will be $59 for the collector edition: - ColeCoco Master adapter with 1:1 reproduction case (down to the screws) and professionally printed stickers (front and back) - Clam shell with SMS style artwork - Shrink wrapped (for sealed collection 😈) We'll offer other editions in the future (bare adapters or even bare PCBs). More pics and information there: APOCALYPSE - Coming Soon: ColeCoco Master Adapter!! | Arcade-Projects Forums Thanks guys. ------------ Interest list @RockLobster x 1 @TPR x 1 @-^CrossBow^- x 1 @eebuckeye x 1 @rietveld x 1 @mumbai x 1 @Gemintronic x 1 @Bomberman93 x 1 @OriginalJohn x 2 @mdoerty x 1 @Tomy x 1 @Warrior6108 x 1 @SearsRoebuck x 1 @imstarryeyed x 1 @thunder-rabbit x 1 @retrogmr x 1 @BryceO84 x 1 @SamsSimson x 1 @dipdoodle x 1 @MacRorie x 1 @captcapcom x 1 @dragonHunter x 1 @RGDiRocco x 1 @dougyt40 x 1 @takaaki x 1 @xave2000 x 1 @BILLYonaire x 1 @Eligio x 1 @fandenivoldsk x 1 15 Quote Link to comment Share on other sites More sharing options...
digress Posted October 25, 2022 Share Posted October 25, 2022 Master system is the Colecovision 2. Quote Link to comment Share on other sites More sharing options...
fiddlepaddle Posted October 25, 2022 Share Posted October 25, 2022 As a Colecovision fan, this is very interesting to me, but I know nothing about the SG1000. Does this mean one could potentially play Colecovision games on a Game Gear, since you can play Master System games on one? (Also, my browser, which is unfortunately older and can't be updated without upgrading my OS, doesn't show anything but a blank space between "...hence slightly off colours): " and "To access the keypad maintain the PAUSE...", so I'm probably missing some key information here...is this a hardware or software adapter?) Quote Link to comment Share on other sites More sharing options...
+eebuckeye Posted October 26, 2022 Share Posted October 26, 2022 Want!! Will you offer for sale? Quote Link to comment Share on other sites More sharing options...
+Apocalypse Posted October 26, 2022 Author Share Posted October 26, 2022 23 hours ago, fiddlepaddle said: As a Colecovision fan, this is very interesting to me, but I know nothing about the SG1000. Does this mean one could potentially play Colecovision games on a Game Gear, since you can play Master System games on one? (Also, my browser, which is unfortunately older and can't be updated without upgrading my OS, doesn't show anything but a blank space between "...hence slightly off colours): " and "To access the keypad maintain the PAUSE...", so I'm probably missing some key information here...is this a hardware or software adapter?) Yes you could play CV games on the GG, only you woud need to add a small piece of code to initialise CRAM to the closest CV colours (not needed on the MS as colours in compatibility mode are fixed/hardcoded). There's a video of it running and a drawing showing the keypad mapping. 22 hours ago, eebuckeye said: Want!! Will you offer for sale? Probably not, there's not much interest for it. It was mostly a fun exercise for me after I saw people were converting games manually (patching the code). To make it a commercial product it would need to have hard gold finish on the contacts and a beveled edge, which jack up the price a lot for small batches (<=10 units). Making it open source won't satisfy the few people interested neither as it involves SMT soldering and CPLD programming (either with a programmer or a JTAG cable). On top of that I don't have the time to write documentation and support it. Quote Link to comment Share on other sites More sharing options...
imstarryeyed Posted October 27, 2022 Share Posted October 27, 2022 I would totally want one of these! I love strange but cool hardware addons especially for the Sega Master system! Cool Project! If you happen to make a few let me know as I will buy one from you for sure! Quote Link to comment Share on other sites More sharing options...
+eebuckeye Posted October 27, 2022 Share Posted October 27, 2022 The concept of this is very cool! I wonder if there is any chance it would work with the Master System adapter for the Genesis? Playing Coleco games on the Genesis would be wild! Regardless I would really like one if you decide to build! Quote Link to comment Share on other sites More sharing options...
K-Rod 13 Posted October 27, 2022 Share Posted October 27, 2022 Definitely interested in buying one also if you do make more. Quote Link to comment Share on other sites More sharing options...
fiddlepaddle Posted October 27, 2022 Share Posted October 27, 2022 So, after referencing this article (https://hackaday.com/2008/12/11/how-to-programmable-logic-devices-cpld/), it appears one could use a CPLD inside an a SD card multicart (similar to the Atarimax Ultimate SD I have) containing some special boot-up code for the colors, could allow a person to potentially play Colecovision games, Master System games, SG-1000 games (and maybe some Game Gear games) on a Genesis? If that was true, I bet the market for a device like this is much bigger than you think. Quote Link to comment Share on other sites More sharing options...
SiLic0ne t0aD Posted October 27, 2022 Share Posted October 27, 2022 (edited) Very cool! Open sourcing it would be welcomed I'm sure.. There's more people interested and capable of building it than you'd think. Hope you'll consider it. 🙏 Edited October 27, 2022 by SiLic0ne t0aD Quote Link to comment Share on other sites More sharing options...
RangerG Posted October 28, 2022 Share Posted October 28, 2022 I love this and would eagerly buy one, great work. Quote Link to comment Share on other sites More sharing options...
+Apocalypse Posted October 30, 2022 Author Share Posted October 30, 2022 On 10/27/2022 at 2:41 PM, eebuckeye said: The concept of this is very cool! I wonder if there is any chance it would work with the Master System adapter for the Genesis? Playing Coleco games on the Genesis would be wild! Regardless I would really like one if you decide to build! The Megadrive VDP doesn't support legacy modes. Games do boot and have sound but screen remains black. On 10/28/2022 at 4:42 AM, fiddlepaddle said: So, after referencing this article (https://hackaday.com/2008/12/11/how-to-programmable-logic-devices-cpld/), it appears one could use a CPLD inside an a SD card multicart (similar to the Atarimax Ultimate SD I have) containing some special boot-up code for the colors, could allow a person to potentially play Colecovision games, Master System games, SG-1000 games (and maybe some Game Gear games) on a Genesis? If that was true, I bet the market for a device like this is much bigger than you think. The adapter can already do that, I've tested it to play SG-1000 games on the Game Gear (picking colours that are much closer to the CV ones than those hardcoded in the MS VDP). Master System games on the Megadrive have always been a thing through the Power Base Converter. 1 Quote Link to comment Share on other sites More sharing options...
+Apocalypse Posted April 26, 2023 Author Share Posted April 26, 2023 It's ready! Soon to be produced by mitsurugi_w from Arcade Projects: New Home for Apocalypse Multis and Projects | Arcade-Projects Forums 13 Quote Link to comment Share on other sites More sharing options...
TurdFurgeson82 Posted April 26, 2023 Share Posted April 26, 2023 Interested, so they will be sold on the link you posted? Quote Link to comment Share on other sites More sharing options...
+Gemintronic Posted April 26, 2023 Share Posted April 26, 2023 5 minutes ago, TurdFurgeson82 said: Interested, so they will be sold on the link you posted? He listed various reasons he's not doing that in previous posts. That being said, I too am really interested as I'd love to have a master system for both SMS and Coleco development. Quote Link to comment Share on other sites More sharing options...
+darryl1970 Posted April 26, 2023 Share Posted April 26, 2023 On 10/29/2022 at 9:46 PM, Apocalypse said: The Megadrive VDP doesn't support legacy modes. Games do boot and have sound but screen remains black. The adapter can already do that, I've tested it to play SG-1000 games on the Game Gear (picking colours that are much closer to the CV ones than those hardcoded in the MS VDP). Master System games on the Megadrive have always been a thing through the Power Base Converter. This was my first thought, since the Genesis sold more units. Thanks for touching on this. Are you saying that it would not work, because CV would be considered a legacy mode (like SG-1000). I find this intriguing. This didn't quote the part about the muti carts. I have an Everdrive. It would be cool if it supported CV games too. I guess it would get messy, because keypad support would also be something that may need addressed, such as your on-screen solution. When I created RatTrap for the 7800, I revisited the ColecoVision version of MouseTrap. I find that playing the game on some touch-screen emulators is nearly impossible, since all buttons are on-screen. I supposed it would be similarly challenging if an on-screen keypad needed to be brought up. Overall, I think this is a really cool project. I saw it today in a Facebook feed, and I had to hunt it down on AA. Nice! 1 Quote Link to comment Share on other sites More sharing options...
+evg2000 Posted April 26, 2023 Share Posted April 26, 2023 3 hours ago, Gemintronic said: He listed various reasons he's not doing that in previous posts. That being said, I too am really interested as I'd love to have a master system for both SMS and Coleco development. I wonder if a developer like @Digital Fluff might be able to produce it for them? 1 Quote Link to comment Share on other sites More sharing options...
ApolloBoy Posted April 26, 2023 Share Posted April 26, 2023 1 hour ago, darryl1970 said: This was my first thought, since the Genesis sold more units. Thanks for touching on this. Are you saying that it would not work, because CV would be considered a legacy mode (like SG-1000). I find this intriguing. Both the SG-1000 and ColecoVision use similar VDPs (9918 for the SG1K, 9928 for the CV) whose graphic modes were not included in the Genesis/Mega Drive VDP. Technically they do work, but you'd be playing them blind because the Genesis/MD would just display a black screen for those games. Quote Link to comment Share on other sites More sharing options...
Tighe Posted April 26, 2023 Share Posted April 26, 2023 I love this and would love to buy one. If you aren't selling it would you please consider releasing the info on how you made it? Quote Link to comment Share on other sites More sharing options...
+Apocalypse Posted April 26, 2023 Author Share Posted April 26, 2023 5 hours ago, TurdFurgeson82 said: Interested, so they will be sold on the link you posted? Yes. 5 hours ago, Gemintronic said: He listed various reasons he's not doing that in previous posts. That being said, I too am really interested as I'd love to have a master system for both SMS and Coleco development. I will not produce them, but someone in the US will (mitsurugi_w from Arcade Projects). 2 hours ago, darryl1970 said: This was my first thought, since the Genesis sold more units. Thanks for touching on this. Are you saying that it would not work, because CV would be considered a legacy mode (like SG-1000). I find this intriguing. This didn't quote the part about the muti carts. I have an Everdrive. It would be cool if it supported CV games too. I guess it would get messy, because keypad support would also be something that may need addressed, such as your on-screen solution. When I created RatTrap for the 7800, I revisited the ColecoVision version of MouseTrap. I find that playing the game on some touch-screen emulators is nearly impossible, since all buttons are on-screen. I supposed it would be similarly challenging if an on-screen keypad needed to be brought up. Overall, I think this is a really cool project. I saw it today in a Facebook feed, and I had to hunt it down on AA. Nice! Yes CV is legacy mode. It's not an on-screen keypad: you need to maintain the PAUSE button on the console then press a direction/button combination as explained in the picture posted in the first post. That's far from ideal I know, you need to sit close to the console. But many games use only one or two buttons (all the arcade ports, etc.). 2 hours ago, evg2000 said: I wonder if a developer like @Digital Fluff might be able to produce it for them? Please see my answer above. 50 minutes ago, ApolloBoy said: Both the SG-1000 and ColecoVision use similar VDPs (9918 for the SG1K, 9928 for the CV) whose graphic modes were not included in the Genesis/Mega Drive VDP. Technically they do work, but you'd be playing them blind because the Genesis/MD would just display a black screen for those games. You are 100% correct. 5 Quote Link to comment Share on other sites More sharing options...
ianoid Posted April 27, 2023 Share Posted April 27, 2023 Yeah I'd be into one of these as well. Nice work! Quote Link to comment Share on other sites More sharing options...
rurounin Posted April 27, 2023 Share Posted April 27, 2023 I need it !!!!! When can we buy it ? Quote Link to comment Share on other sites More sharing options...
bikeguychicago Posted April 27, 2023 Share Posted April 27, 2023 In theory this should also work on The Stack (Genesis w/ Power Base Convertor), correct? Quote Link to comment Share on other sites More sharing options...
RockLobster Posted April 27, 2023 Share Posted April 27, 2023 I too would like to buy one! Quote Link to comment Share on other sites More sharing options...
+Apocalypse Posted April 27, 2023 Author Share Posted April 27, 2023 3 hours ago, bikeguychicago said: In theory this should also work on The Stack (Genesis w/ Power Base Convertor), correct? No because the Megadrive/Genesis VDP doesn't support legacy video modes. Quote Link to comment Share on other sites More sharing options...
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