Search found 43 matches

by fenarinarsa
Fri Jan 26, 2018 12:21 am
Forum: Games - General
Topic: Enchanted Land parallax scroll
Replies: 21
Views: 2510

Re: Enchanted Land parallax scroll

I didn't go that far. But if you use Steem SSE's debugger you will quickly see that the code is quite easy to read and there's a lot of jump to subroutines (jsr) to pointers like jsr (a0). You can replace them with nops ($4e71) and immediately see what you disabled. That's the way I found out the te...
by fenarinarsa
Wed Jan 24, 2018 12:34 am
Forum: Games - General
Topic: Enchanted Land parallax scroll
Replies: 21
Views: 2510

Re: Enchanted Land parallax scroll

Okay I'm no syncscroll master like you troed or others great people, but I did a quick check of the intro with Steem SSE debug and from what I could see the foreground is indeed achieved with syncscroll (that was an easy find by modifying the colors or by tracing the hbl interrupt). Since the 4-bit ...
by fenarinarsa
Tue Jan 23, 2018 12:40 am
Forum: Games - General
Topic: Enchanted Land parallax scroll
Replies: 21
Views: 2510

Re: Enchanted Land parallax scroll

First of all Enchanted Lands works on plain STF so you can forget about using the blitter and changing the video address counter mid screen since it's possible only on the STE. So it's all software. During the game it obviously uses the syncscroll technique. Syncscroll is mostly used to achieve vert...
by fenarinarsa
Mon Jan 08, 2018 11:51 pm
Forum: Applications
Topic: TOS 3.1 desktop for the ST
Replies: 22
Views: 2331

Re: TOS 3.1 desktop for the ST

Frank your version is slightly different. I did have this NEWDESK.PRG (named TT_DESK.PRG) on my boot disk back then, I worked a lot with it on my STE with 2.5MB of RAM. Some menus looks different, for instance the preference dialog show the actual resolutions (320x200 / 640x200...) when on your vers...
by fenarinarsa
Sun Dec 31, 2017 11:25 am
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

TT is definitevely a beast :o cvid is not the best codec to pack this video, a better choice would be QuickTime's "animation" (which is actually delta packing). I'm quite sure on TT it would be possible to compress delta-packed frames with a dictionary-based algorithm and make a full res 2...
by fenarinarsa
Sat Dec 30, 2017 12:23 am
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

I just released the final version. Contains 4 versions: high 50kHz, high 12kHz, low 50kHz, low 12kHz. The 12kHz versions make really smaller files, if your HDD is a bit slow it may work better. Also seems to work better with more HDD drivers, thanks to Petari. https://fenarinarsa.com/badapple/fenari...
by fenarinarsa
Wed Dec 27, 2017 10:32 pm
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

Yes this is because of the dithering. I did a pure black & white version in lowres, the borders are a bit sharper but not so much and we lose all the shadow/blur effects... That's why I chose to do a dithering. I used Photoshop to do the batch conversion like I did for the color version. There's...
by fenarinarsa
Wed Dec 27, 2017 4:36 pm
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

Okay, here's the monochrome version. Please don't repost the link, it's a beta version. I don't have a mono monitor to test it on real hardware. If you do, please test it and tell me if it's okay, then I will do a proper release :) https://fenarinarsa.com/badapple/ba_mono.zip There is also some bugf...
by fenarinarsa
Tue Dec 26, 2017 7:46 pm
Forum: Steem
Topic: Capture card advice for Steem...
Replies: 8
Views: 2186

Re: Capture card advice for Steem...

You can use OBS Studio, it's the best solution so far if you don't need to record the native 50Hz display. If OBS doesn't work then a regular HDMI game capture card will work like El Gato or AverMedia (I recently tried AverMedia Live Gamer Portable 2 which works pretty well and can be used as a stan...
by fenarinarsa
Sun Dec 24, 2017 11:39 am
Forum: Coding
Topic: Atari STE video & DMA sound frequencies
Replies: 3
Views: 1422

Re: Atari STE video & DMA sound frequencies

THANK YOU. No matter how hard I searched, I couldn't find those numbers (even here, I didn't find that thread Cyprian). And the Atari wiki has been down for years :( So if I compare the result I found by trial & error (2*50035)/60 = 1667,83 bytes/vbl to the actual numbers (2*50066)/60.03747642 =...
by fenarinarsa
Sun Dec 24, 2017 10:05 am
Forum: Coding
Topic: Atari STE video & DMA sound frequencies
Replies: 3
Views: 1422

Atari STE video & DMA sound frequencies

Christmas topic :) When I developped Bad Apple I found out that the STE DMA frequencies may not exactly be the ones that are in every documentation. This also applies to vertical video frequencies. Atari ST video frequencies are often described as: 50Hz (PAL) 60Hz (NTSC) 71Hz (hig-res) However it se...
by fenarinarsa
Sat Dec 23, 2017 10:44 pm
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

Okay guess what, I replaced an IFEQ by an IFNE and now it works.

I was clearing $ffff8260 so the ST was going to lowres but as the emulators are locked into highres per setting, of course I didn't see that immediatly. -_-'
by fenarinarsa
Sat Dec 23, 2017 8:50 pm
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

Exclusive preview of the monochrome version. https://fenarinarsa.com/badapple/atomic_bomb_explosion.jpg Hatari, Steem and Steem SSE: none gives the same result in monochrome, there is major bugs on the three emulators, but different bugs :? And I don't have a mono-VGA adapter at hand to test on real...
by fenarinarsa
Tue Dec 19, 2017 11:27 pm
Forum: News & Announcements
Topic: new Nova drivers
Replies: 71
Views: 6997

Re: new Nova drivers

Bikerbob wrote:These are the NOVA drivers .. see the beginning of the thread. Idek Tramielski is the author.


Oh, okay, I thought that they were old drivers that Idek recently rebuilt. My bad. There is not a lot of information on the website, it's actually quite hard to find out who's doing what :)
by fenarinarsa
Tue Dec 19, 2017 9:35 pm
Forum: News & Announcements
Topic: new Nova drivers
Replies: 71
Views: 6997

Re: new Nova drivers

May I ask how are the drivers generated? Are the sources available somewhere? I can't find anything, only some raw documentation of the ET4000 chipset.
by fenarinarsa
Mon Dec 18, 2017 11:49 pm
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

Very nice STe version of Bad Apple Fenarinarsa :D , see with my slow Satandisk with bigs pauses to load the code. Great, that means my low buffer detection works :p Unfortunately it doesn't seem to work on my 4MB STE with UltraSATAN and HDDriver 10.10. It just stops on the intro screen with only a ...
by fenarinarsa
Sun Dec 17, 2017 12:22 am
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

Yes, as I said before a monochrome version is completely possible. It needs some modifications of the generator to take into account the longer lines in memory and the higher number of lines. Also I'm not sure of the best way to handle the difference of framerate. In lowres it was easy, I switch to ...
by fenarinarsa
Tue Dec 12, 2017 10:55 am
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

I like your prod a lot. I have one question: it seems that yo're not using whole screen, how much does that save? Yes I do, it's 320x200 so it's the whole regular screen. The borders can't be used unless you use fullscreen techniques, but they're not compatible with disk loading (HDD loading uses D...
by fenarinarsa
Mon Dec 11, 2017 10:28 pm
Forum: Demos - General
Topic: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!
Replies: 66
Views: 8204

Re: Bad Apple by Fenarinarsa (Atari STe demo) !!!!!

Oh my god another thread XD I didn't expect to have that many talks about this conversion. So yes it may be considered as a simple video codec, but as I'm originally a demo coder and I used my old skills to do that, you can also consider it to be a demo. It's up to anyone, I don't mind at all. As fo...
by fenarinarsa
Sat Dec 02, 2017 11:29 pm
Forum: Steem
Topic: Steem 3.9.4
Replies: 3
Views: 1104

Steem 3.9.4

I don't understand what the following upgrade note means:

Code: Select all

- Sound: STE DMA sound in 16bit mono.

         Pro Sound Designer in 16bit (Wings of Death, Lethal XCess STF).


I can't find a mention of 16bit sound anywhere else ? Nothing about it either in Pro Sound Designer descriptions.
by fenarinarsa
Fri Dec 01, 2017 3:10 pm
Forum: Coding
Topic: horizontal scrolling on ST
Replies: 569
Views: 101807

Re: horizontal scrolling on ST

Interesting . I guess that he just wanted that it work on STE. Instead using/doing STE HW scroll based one. But, since video chip is different in STE, that syncscroll just wont work. That would be case of having fun instead thinking :D Well, if my memory's right it really works, that's why I pointe...
by fenarinarsa
Fri Dec 01, 2017 2:25 pm
Forum: Coding
Topic: horizontal scrolling on ST
Replies: 569
Views: 101807

Re: horizontal scrolling on ST

I just found a very old screen completely by chance (I knew it existed but couldn't remember where and when it was released) : the New Generation Crew screen in Delirious Demo 4. I remember that Biggles (the coder) tried very hard to make the 4-bit syncscroll technique to work on STE because it wasn...
by fenarinarsa
Mon May 15, 2017 11:18 pm
Forum: News & Announcements
Topic: *** R-TYPE DELUXE SOURCE CODE ***
Replies: 27
Views: 10674

Re: *** R-TYPE DELUXE SOURCE CODE ***

Okay I added stage select & cheat code activation when the game starts (from unpacked files right now) But I think there is already all the logic to go from on stage to another, there is a main part that loops back to the beginning of the level when you beat the boss (if the cheat mode is not ac...
by fenarinarsa
Mon May 15, 2017 11:02 am
Forum: News & Announcements
Topic: *** R-TYPE DELUXE SOURCE CODE ***
Replies: 27
Views: 10674

Re: *** R-TYPE DELUXE SOURCE CODE ***

Thanx for this. I think that I need to do new release of it. Any tips for some further changes (nothing big) ? I'm going to check the game difficulty level, I'm not the best player at R-Type but I can go as far as Level 5 easily in the original game, and on this version I hardly succeed in ending t...

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