Ericde45 Posted February 27, 2022 Share Posted February 27, 2022 with source code available : https://www.pouet.net/prod.php?which=91133 A total conversion of the ST CONNEXION Demo - Let's Do The Twist Again - to the Atari Jaguar original credits: Coding: Alien Graphics: Krazy Rex Music: Celtics using LSP by Arnaud Carré : https://github.com/arnaud-carre/LSPlayer ported to Atari Jaguar complete source of this demo is available at https://github.com/ericde45/mega_JAG Thanks to CyranoJ, Dilinger, Zerosquare, SCPCD, Fadest, 42bs for technical support and good advices Thanks to Dyno & WAB.COM for the graphics assets and scrolltext. Curves are coming directly from the ST No 68000 ! No Blitter ! GPU & DSP only. 15 Quote Link to comment Share on other sites More sharing options...
+CyranoJ Posted February 27, 2022 Share Posted February 27, 2022 Awesome! 1 Quote Link to comment Share on other sites More sharing options...
+Saturn Posted February 27, 2022 Share Posted February 27, 2022 Nice! Just grabbed this. Will give it a go asap. Thanks Quote Link to comment Share on other sites More sharing options...
SCPCD Posted February 27, 2022 Share Posted February 27, 2022 Great job ! Quote Link to comment Share on other sites More sharing options...
Cyprian Posted February 27, 2022 Share Posted February 27, 2022 cool Quote Link to comment Share on other sites More sharing options...
+cubanismo Posted February 27, 2022 Share Posted February 27, 2022 (edited) The YouTube link looks cool, but I've tried this on three different Jaguars connected to three different displays now with four different Skunkboards and a GameDrive, both the ABS and .j64 ROM. Doesn't work. I see the intro screens, then it just goes black. On one system, I get the music. On the rest, just silence. Finally, I tried switching to 50Hz on my system that supports this, and on the 2nd try it worked there. Seems to be an NTSC/PAL thing. NTSC support plz! Edited February 27, 2022 by cubanismo Tried Game Drive and 50Hz too now. Quote Link to comment Share on other sites More sharing options...
Zerosquare Posted February 28, 2022 Share Posted February 28, 2022 I think it's more subtle than that. @DEATH reported elsewhere that it did run fine on his Jaguar in NTSC mode. I have mixed results: - the ABS version (uploaded with BJL) crashes at PC=0x401D with 68K exception 3 - I have tested the ROM version in both PAL and NTSC mode, both with the normal boot ROM and with the BJL ROM. Sometimes it works fine, sometimes the title screen is OK but the screen turns black when the demo starts, sometimes I only get a black screen. Sounds appears to work in all cases. I think it's either uninitialized RAM or uninitialized video registers. Quote Link to comment Share on other sites More sharing options...
Ericde45 Posted February 28, 2022 Author Share Posted February 28, 2022 regarding 0x401D error, difficult to know what's going on as code starts at $4000 and $401d is not an instruction step does the BJL needs some specific initializations ? BSS RAM is cleared at start. stack also and OL areas also i think i have issues with the fact that i have video inits + object list for first part and another video init + another OL for second part. but currently as i only have 50 HZ jaguar, it is difficult to test. under emulators this is fine. ( at least on my PC ) 004000: 23FC0007000700F0210C move [#F0210C], #70007 00400A: 23FC0007000700F1A10C move [#F1A10C], #70007 004014: 2E7C001FFFFC movea a7, #1FFFFC 00401A: 33FC06C700F00028 move [#F00028].w, #6C7 004022: 33FC010000F14000 move [#F14000].w, #100 00402A: 41F900053D40 lea a0, [#53D40] 004030: 43F900063768 lea a1, [#63768] 004036: 7000 moveq d0, #0 004038: 10C0 move [a0+].b, d0.b 00403A: B3C8 cmpa a1, a0 00403C: 66FA bne #4038 00403E: 41F9001FFF98 lea a0, [#1FFF98] 004044: 43F9001FFFFC lea a1, [#1FFFFC] 00404A: 7000 moveq d0, #0 00404C: 10C0 move [a0+].b, d0.b 00404E: B3C8 cmpa a1, a0 004050: 66FA bne #404C 004052: 41F9001E0C00 lea a0, [#1E0C00] 004058: 43F900200000 lea a1, [#200000] 00405E: 7000 moveq d0, #0 004060: 10C0 move [a0+].b, d0.b 004062: B3C8 cmpa a1, a0 004064: 66FA bne #4060 004066: 61000450 bsr #44B8 00406A: 610007C6 bsr #4832 00406E: 7000 moveq d0, #0 004070: 303900F14002 move d0.w, [#F14002].w 004076: 23FC0195CA6C00053D40 move [#53D40], #195CA6C 004080: 23FC0006572A00053D44 move [#53D44], #6572A 00408A: 08000004 btst d0, #4 00408E: 6714 beq #40A4 004090: 23FC0195BEBA00053D40 move [#53D40], #195BEBA Quote Link to comment Share on other sites More sharing options...
Zerosquare Posted February 28, 2022 Share Posted February 28, 2022 4 minutes ago, Ericde45 said: regarding 0x401D error, difficult to know what's going on as code starts at $4000 and $401d is not an instruction step Hmm, yeah that's strange... 4 minutes ago, Ericde45 said: does the BJL needs some specific initializations ? No, you don't have to do anything special. Quote Link to comment Share on other sites More sharing options...
DEATH Posted February 28, 2022 Share Posted February 28, 2022 4 hours ago, Zerosquare said: I think it's more subtle than that. @DEATH reported elsewhere that it did run fine on his Jaguar in NTSC mode. more precisely it's a Euro Jaguar PAL (K version I think... I don't remember anymore. The most recent version anyway) but switched to 60Hz Quote Link to comment Share on other sites More sharing options...
Ericde45 Posted February 28, 2022 Author Share Posted February 28, 2022 (edited) updated so it should be better conclusions : - i emptied the object lists at start with 0.l 4.l, instead of zeros. better filled with stop - i added an object list for the introduction, as it seems better to avoid modifying an object list while it is used ... - i removed move #$2700,sr, seems to be ugly in Jaguar world. thanks a lot for all your tests Edited February 28, 2022 by Ericde45 mitype 3 2 Quote Link to comment Share on other sites More sharing options...
Zerosquare Posted February 28, 2022 Share Posted February 28, 2022 It now works reliably for me (except the ABS version). Quote Link to comment Share on other sites More sharing options...
+cubanismo Posted March 1, 2022 Share Posted March 1, 2022 Yup, new version works for me as well now. Quote Link to comment Share on other sites More sharing options...
TPAU65 Posted March 13, 2022 Share Posted March 13, 2022 New version works on my US NTSC Jaguar as well now, all three files! Did a (full scrolltext) video of this: https://youtu.be/RL062TH8bF4 Btw. the first time here that the YT-video looks better than the source video I used for uploading! That has the usual "not quite in sync" stuttering, which were much better if not almost gone on YT! ? 1 Quote Link to comment Share on other sites More sharing options...
Ericde45 Posted March 15, 2022 Author Share Posted March 15, 2022 (edited) thanks a lot what's your capture tool/card ? ( i have to buy one soon ) edit : ok, i saw the answer is written in the youtube description : Startech USB3HDCAP Edited March 15, 2022 by Ericde45 Quote Link to comment Share on other sites More sharing options...
TPAU65 Posted March 16, 2022 Share Posted March 16, 2022 Yep, it's quite versatile as it also has (apart from HDMI) DVI, VGA via DVI adapter and S-Video/Composite/Stereo adapter. For sound I usually use the Stereo line-in instead of HDMI, as it sometimes gives better results, e.g. Falcon and STE with their direct line out connectors. 1 Quote Link to comment Share on other sites More sharing options...
+Stephen Posted March 16, 2022 Share Posted March 16, 2022 Really cool! Quote Link to comment Share on other sites More sharing options...
Ericde45 Posted October 14, 2022 Author Share Posted October 14, 2022 (edited) i commited a new conversion, just because i really like the original on Atari ST https://www.pouet.net/prod.php?which=925293 of course source is on github : https://github.com/ericde45/replic22 Edited October 14, 2022 by Ericde45 9 Quote Link to comment Share on other sites More sharing options...
+CyranoJ Posted October 14, 2022 Share Posted October 14, 2022 Needs more Zoolook Quote Link to comment Share on other sites More sharing options...
Ericde45 Posted November 6, 2022 Author Share Posted November 6, 2022 (edited) next was a lot more difficult : https://www.pouet.net/prod.php?which=92821 https://youtu.be/9iGlcPxtzjY Edited November 6, 2022 by Ericde45 3 Quote Link to comment Share on other sites More sharing options...
42bs Posted November 7, 2022 Share Posted November 7, 2022 I like what you are doing/achieving but your coding style (all in one file) is kinda horrible Anyway, here is a new goal: https://demozoo.org/productions/68152/ Esp. this one (I love "tremblement"): https://demozoo.org/productions/124137/ Quote Link to comment Share on other sites More sharing options...
Ericde45 Posted November 7, 2022 Author Share Posted November 7, 2022 (edited) i don't see what you mean by tremblement ? is that the name of an effect in the mad max tune ? and this very old TNT demo would be quite easy on Jaguar. Edited November 7, 2022 by Ericde45 Quote Link to comment Share on other sites More sharing options...
42bs Posted November 7, 2022 Share Posted November 7, 2022 36 minutes ago, Ericde45 said: i don't see what you mean by tremblement ? is that the name of an effect in the mad max tune ? and this very old TNT demo would be quite easy on Jaguar. The German word is "Schwebung". IIRC if two (or more) tones are close to each other, you get the rising/falling of volume (interference). Quote Link to comment Share on other sites More sharing options...
Chilly Willy Posted November 7, 2022 Share Posted November 7, 2022 3 hours ago, 42bs said: The German word is "Schwebung". IIRC if two (or more) tones are close to each other, you get the rising/falling of volume (interference). In electronics, that's called heterodyning. Quote Link to comment Share on other sites More sharing options...
42bs Posted November 7, 2022 Share Posted November 7, 2022 10 minutes ago, Chilly Willy said: In electronics, that's called heterodyning. Not quiet. This one: https://en.wikipedia.org/wiki/Beat_(acoustics) 2 Quote Link to comment Share on other sites More sharing options...
Like us on Facebook
Follow us on Twitter
AtariAge on Instagram
Watch us on YouTube
Chat on Discord
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.