flip Posted September 14, 2016 Author Share Posted September 14, 2016 (edited) I'd want a multicart + composite board (unless it is dead easy to mod a Conic M1200 - feel free to point me to a page in that case). I think I can live without a shell, or reuse my spare Blackjack cartridge. Hm.. so we're filling in our details on the Google sheet? I'll look it up right away. Can't guarantee that the video mod works on an M1200... I've not seen a mod as such, but the CDP1864 should put out a composite signal somewhere, so I imagine it could well work... You can't edit the list, but I've added your name to it... FliP Edited September 14, 2016 by flip Quote Link to comment Share on other sites More sharing options...
Bill Loguidice Posted September 14, 2016 Share Posted September 14, 2016 (edited) I'm interested in the multicart and composite out board, although I didn't see any pricing or what installation of the composite out board involves. Is there info I'm missing outside of the post #1? Edited September 14, 2016 by Bill Loguidice Quote Link to comment Share on other sites More sharing options...
flip Posted September 14, 2016 Author Share Posted September 14, 2016 I'm interested in the multicart and composite out board, although I didn't see any pricing or what installation of the composite out board involves. Is there info I'm missing outside of the post #1? The composite board is complementary, so no extra cost - it's a small PCB that needs to connect to the console in three points: GND, 5V and the video signal. You'll need to supply the cable to video out yourself, but an audio cable with an RCA plug will normally do... I'll put up some pictures when I have the final board, but there's a (hopefully) elegant way to attach it to the PCB... You'll need some basic soldering skill, but the board will come assembled... FliP Quote Link to comment Share on other sites More sharing options...
carlsson Posted September 14, 2016 Share Posted September 14, 2016 Ok, fair enough. I haven't looked inside my console, in case there is a RF modulator whose signal I could tap, but likely it would need amplification to be used as a composite video signal. I suppose your board also taps audio from somewhere on the board, or at least that it could be added so you get both video and audio through the monitor? Quote Link to comment Share on other sites More sharing options...
paulrobson Posted September 15, 2016 Share Posted September 15, 2016 Question : if I write any more Rcas2 games, to make them compatible with this what memory can I use, beyond the obvious (400-7ff) ? Is it just c00-Fff ? 1 Quote Link to comment Share on other sites More sharing options...
linville Posted September 15, 2016 Share Posted September 15, 2016 I would like a cart and composite board -- thanks! Quote Link to comment Share on other sites More sharing options...
TLD1985 Posted September 15, 2016 Share Posted September 15, 2016 Question : if I write any more Rcas2 games, to make them compatible with this what memory can I use, beyond the obvious (400-7ff) ? Is it just c00-Fff ? I'd like to see some new games in colour/sound Quote Link to comment Share on other sites More sharing options...
flip Posted September 15, 2016 Author Share Posted September 15, 2016 Question : if I write any more Rcas2 games, to make them compatible with this what memory can I use, beyond the obvious (400-7ff) ? Is it just c00-Fff ? Hi Paul, Yes - I am only decoding the lower 4 address lines so the cart only 'knows' A0-A11, which gives it 1K addressable space... $800 to $BFF is used by the different consoles, so that leaves the addresses you quote. I guess that adding a second latch is possible, which would give 64K to play with, but there's no way to add RAM to the cart, as the MWR signal isn't there... Not sure you saw my message some time ago: on real hardware, using long branches causes timing issues for the 1861, because it loses sync due to the three CPU cycles these instructions use. I've managed to patch Pong/Hockey and Combat, so they play fine. Invaders is giving me more problems, as it has a lot of long branches and 2 really long routines as far as I can see that go beyond the 256-byte pages. At the end of every cycle, the screen flickers as a result... Since Emma doesn't show the problem, testing can only be done by burning new versions to EEPROMs, which is rahter cumbersome. As for ideas for new games: I was going to try and see whether I could adapt your Scramble code into a Flappy Bird clone - haven't gotten around to it yet, so I hope you can beat me to it! There's a complementary cart reserved for you - if you PM me your details, I'll send it out with the rest of them... regards, FliP Quote Link to comment Share on other sites More sharing options...
paulrobson Posted September 15, 2016 Share Posted September 15, 2016 Hi. Thanks for the offer, but I haven't got any way of running it. What's the timescale for sending these out ? I can have a crack at upgrading Invaders (I've obviously learnt for the new ones !) Paul Robson Quote Link to comment Share on other sites More sharing options...
flip Posted September 15, 2016 Author Share Posted September 15, 2016 Hi again, The plan was to start shipping late next week. But since I've not asked anyone for money yet, the timescale is still 'when they are ready'. I still need to build at least half a dozen and I'm waiting for some more parts to build the composite mod. If you could come up with a fix, that would obviously be worth the wait/delay! Cheers, FliP Quote Link to comment Share on other sites More sharing options...
paulrobson Posted September 15, 2016 Share Posted September 15, 2016 I will try and get it done in the next couple of days. I'll let you know. Quote Link to comment Share on other sites More sharing options...
+KylJoy Posted September 15, 2016 Share Posted September 15, 2016 Hey, my 2 cents... I'd wait a bit for a "fixed" version. Quote Link to comment Share on other sites More sharing options...
paulrobson Posted September 15, 2016 Share Posted September 15, 2016 Okay, I have set up a repository at https://github.com/paulscottrobson/studio2-games. The three problematic games are the old ones, Combat, Hockey and Invaders which were written before I knew about the 3-cycles issue. I probably won't have time tomorrow but should get it done over the weekend - hopefully ! 1 Quote Link to comment Share on other sites More sharing options...
+KylJoy Posted September 15, 2016 Share Posted September 15, 2016 ... I probably won't have time tomorrow but should get it done over the weekend - hopefully ! Wow... I love you, bro... Quote Link to comment Share on other sites More sharing options...
djones60 Posted September 16, 2016 Share Posted September 16, 2016 (edited) Put me down for one. The composite video board would be nice too. As far as the shell goes, I'll probably design my own and print it with my 3d printer. Of course, I'll publish anything I come up with. Edited September 16, 2016 by djones60 1 Quote Link to comment Share on other sites More sharing options...
flip Posted September 16, 2016 Author Share Posted September 16, 2016 Okay, I have set up a repository at https://github.com/paulscottrobson/studio2-games. The three problematic games are the old ones, Combat, Hockey and Invaders which were written before I knew about the 3-cycles issue. I probably won't have time tomorrow but should get it done over the weekend - hopefully ! I've forked the patches in for Hockey and Combat... Hope that's OK. FliP Quote Link to comment Share on other sites More sharing options...
paulrobson Posted September 16, 2016 Share Posted September 16, 2016 I've sent you an invite to push to the repo - if you want to update it or send me your changes via email (paul@robsons.org.uk), then I can work on Invaders. Quote Link to comment Share on other sites More sharing options...
flip Posted September 16, 2016 Author Share Posted September 16, 2016 Yes - I am only decoding the lower 4 address lines so the cart only 'knows' A0-A11, which gives it 1K addressable space... That should actually say 4k of addressable space - $000-$FFF = 4096 bytes... FliP Quote Link to comment Share on other sites More sharing options...
paulrobson Posted September 17, 2016 Share Posted September 17, 2016 Okay, the github version of Invaders now has no LBanything LSanything or NOP. I don't think there are any other three cycle 1802 instructions. I've played it a bit and it seems to work fine. You might want to test it but I can't see any reason it should be problematic, it works okay in emulation. I wrote that sixteen years ago ... makes me feel very old. Interesting coding, I appear to have written it as one long bash ... not very modular ... and just used long branches to work round the paging .... still those three were about the first 1802 code I wrote. I notice Combat and Hockey have had some not all of the LBRs fixed. Are the glitches if any in these barely noticeable ? If so, I will just leave them alone if they work okay, so you can get your carts out. Quote Link to comment Share on other sites More sharing options...
paulrobson Posted September 17, 2016 Share Posted September 17, 2016 Flappy bird would be fairly easy but I'd do it differently. Invaders would be more appropriate. Invaders can't move the invaders invididually, the 1802 just can't cope, so what it does is remove all the bullets, scroll the whole screen left, right or down as far as the bases, and then draw the bullets back again. Flappy could work the same way ; remove the bird, scroll the whole screen left, draw the bird back, check for collision, draw in the right hand wall and loop. Quote Link to comment Share on other sites More sharing options...
flip Posted September 17, 2016 Author Share Posted September 17, 2016 Okay, the github version of Invaders now has no LBanything LSanything or NOP. I don't think there are any other three cycle 1802 instructions. I've played it a bit and it seems to work fine. You might want to test it but I can't see any reason it should be problematic, it works okay in emulation. I wrote that sixteen years ago ... makes me feel very old. Interesting coding, I appear to have written it as one long bash ... not very modular ... and just used long branches to work round the paging .... still those three were about the first 1802 code I wrote. I notice Combat and Hockey have had some not all of the LBRs fixed. Are the glitches if any in these barely noticeable ? If so, I will just leave them alone if they work okay, so you can get your carts out. Hi again I can confirm it runs perfect now on the real thing as well. Greatly appreciated Paul, thanks! The long branches that are left in the others don't seem to do any harm. As long as they are not in the main loop, where a lot of screen updating happens, it doesn't seem to matter - or it's at least not noticeable/disturbing. Thanks for the hints on how to tackle Flappy Bird - I'll try and get this cart out the door before having a go at that ;o) FliP Quote Link to comment Share on other sites More sharing options...
thevnaguy Posted September 17, 2016 Share Posted September 17, 2016 put me down for a cart with shell and the composite video Quote Link to comment Share on other sites More sharing options...
slydc Posted September 17, 2016 Share Posted September 17, 2016 Hi flip, Great job you're doing! But i do have a question about it: how much $ are you asking for a multicart ? As for the composite board, i'll pass since both my Studio II and Visicom are already AV modded. =) Quote Link to comment Share on other sites More sharing options...
flip Posted September 17, 2016 Author Share Posted September 17, 2016 Hi flip, Great job you're doing! But i do have a question about it: how much $ are you asking for a multicart ? As for the composite board, i'll pass since both my Studio II and Visicom are already AV modded. =) Hi, See the first post - Cart is $US40, which includes shipping from Belgium to anywhere in the world... FliP Quote Link to comment Share on other sites More sharing options...
slydc Posted September 17, 2016 Share Posted September 17, 2016 Thanks for the info, i must have crap in my eyes not seeing (errr...reading) in the first post....think i'm getting too old. At $40 (cart+shipping), it's a great deal so put my name on the list too. Now, it only missing a front and a back label for those who's going to get a shell with it. Anyone up to designing those labels ? Like this guy (Nishikintoki) on DeviantArt who made a front label and the box cover of a fan-made (non-existant) game called "Race of Speed". Check out the two links: http://nishikintoki.deviantart.com/art/Race-of-Speed-Studio-II-625633565 http://nishikintoki.deviantart.com/art/Race-of-Speed-Cartridge-Studio-II-1977-625634601 1 Quote Link to comment Share on other sites More sharing options...
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