JamesD Posted August 27, 2021 Share Posted August 27, 2021 (edited) https://nowhereman999.wordpress.com/2021/08/17/joust-is-now-available-for-the-coco-3/ Edited August 27, 2021 by JamesD 2 Quote Link to comment Share on other sites More sharing options...
JamesD Posted August 28, 2021 Author Share Posted August 28, 2021 FWIW, this uses the arcade Joust code. Transcode, port, or whatever it's called, it's arcade Joust. 1 Quote Link to comment Share on other sites More sharing options...
doctorclu Posted August 31, 2021 Share Posted August 31, 2021 That is amazing! What did it take to port this? Quote Link to comment Share on other sites More sharing options...
JamesD Posted August 31, 2021 Author Share Posted August 31, 2021 Williams uses the 6809, so the game logic is largely intact as is. However, the arcade game has custom hardware for a lot of stuff that has to be replaced with the CPU. This includes a blitter, sound chips, and the graphics support more colors. So the sounds are samples that are played through the DAC with a timed CPU interrupt, sprites are drawn with optimized 6809 code, graphics are adapted to the CoCo 3. And on top of that, the arcade game had copy protection that had to be patched, and the change in screen aspect ratio had to be dealt with. The author may have some discussion on his blog, and it was discussed on an episode of CoCoTalk!, though I haven't gotten to watch it yet. He has a largely completed version of Defender as well, but he hadn't tracked down an issue in it. From his comments it was the same copy protection so he should be able to finish that soon. Quote Link to comment Share on other sites More sharing options...
VicViper Posted September 5, 2021 Share Posted September 5, 2021 Trying to get this running on my COCOSDC, but I'm getting a blank screen. I put the joust.dsk file on the SD, then DIR- to list, shows the file, then DRIVE 0,"JOUST" OK LOAD "JOUST" OK but then EXEC gives me ?FC ERROR So I try RUN, that goes to a black screen, then eventually a garbled pattern of blinking graphics? Quote Link to comment Share on other sites More sharing options...
VicViper Posted September 5, 2021 Share Posted September 5, 2021 1 minute ago, VicViper said: Trying to get this running on my COCOSDC, but I'm getting a blank screen. I put the joust.dsk file on the SD, then DIR- to list, shows the file, then DRIVE 0,"JOUST" OK LOAD "JOUST" OK but then EXEC gives me ?FC ERROR So I try RUN, that goes to a black screen, then eventually a garbled pattern of blinking graphics? Wait am I dumb? Do I need more than 128K RAM? Quote Link to comment Share on other sites More sharing options...
Briza1 Posted September 5, 2021 Share Posted September 5, 2021 3 minutes ago, VicViper said: Wait am I dumb? Do I need more than 128K RAM? Gidday mate. Yes Joust needs more then 128k ram, Need a 512k ram board min to run it. laters Briza Quote Link to comment Share on other sites More sharing options...
VicViper Posted September 5, 2021 Share Posted September 5, 2021 53 minutes ago, Briza1 said: Gidday mate. Yes Joust needs more then 128k ram, Need a 512k ram board min to run it. laters Briza Dangit. Thanks for the tip. Quote Link to comment Share on other sites More sharing options...
JamesD Posted September 6, 2021 Author Share Posted September 6, 2021 Yeah, the sound samples and graphics take up a lot of RAM Quote Link to comment Share on other sites More sharing options...
VicViper Posted September 6, 2021 Share Posted September 6, 2021 8 minutes ago, JamesD said: Yeah, the sound samples and graphics take up a lot of RAM Already shopping for a RAM board ? Quote Link to comment Share on other sites More sharing options...
MrDave Posted September 6, 2021 Share Posted September 6, 2021 10 hours ago, VicViper said: Already shopping for a RAM board ? Oh, and we all get the garbled screen during loading, so don''t panic.. but get at least a 512k Quote Link to comment Share on other sites More sharing options...
VicViper Posted September 13, 2021 Share Posted September 13, 2021 On 9/6/2021 at 9:28 AM, MrDave said: Oh, and we all get the garbled screen during loading, so don''t panic.. but get at least a 512k Yep, ordered a 512K Triad board from Mark Marlette. 1 Quote Link to comment Share on other sites More sharing options...
JamesD Posted September 29, 2021 Author Share Posted September 29, 2021 Quote Link to comment Share on other sites More sharing options...
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