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by fenarinarsa
Mon Nov 12, 2018 11:15 pm
Forum: Professionals
Topic: Falcon DSP mp2 replay frequency
Replies: 16
Views: 7335

Re: Falcon DSP mp2 replay frequency

Wow, great! Thanks for pointing this out. The only software I knew of was screen pains. BTW I think I found why the Falcon cannot generate standard NTSC, it's related to the horizontal frequency as expected. The standard horizontal video frequencies are: PAL - 15625 Hz 15625/50 = 312.5 lines (interl...
by fenarinarsa
Mon Nov 12, 2018 1:12 am
Forum: Professionals
Topic: Falcon DSP mp2 replay frequency
Replies: 16
Views: 7335

Re: Falcon DSP mp2 replay frequency

The code generated by screens of pain works very well unless you’re doing something very wrong (obviously you need to call it from supervisor mode, for example). Well actually it doesn't work for RGB but I may have done something wrong. Unfortunately Screen Pains does not allow advanced settings, o...
by fenarinarsa
Sat Nov 10, 2018 9:07 pm
Forum: Professionals
Topic: Falcon DSP mp2 replay frequency
Replies: 16
Views: 7335

Re: Falcon DSP mp2 replay frequency

fenarinarsa, Videl is very flexible. It gives you a full control of video signal and allows you to define vertical/horizontal frequency whatever you want. Yes I know, except that the vertical frequency is related to the number of scanlines, and that for me to change it I need dig into Videl's regis...
by fenarinarsa
Fri Nov 09, 2018 7:36 pm
Forum: Professionals
Topic: Falcon DSP mp2 replay frequency
Replies: 16
Views: 7335

Re: Falcon DSP mp2 replay frequency

Thanks a lot for all your replies. As I said in my first message I did what you say dhedberg, and it looks like it's correctly in sync. It'as amazing that I never heard of this 49170Hz frequency before. I thought the "50kHz" of the Falcon was 50066Hz like on STE (which is not even 50066Hz)...
by fenarinarsa
Fri Nov 09, 2018 12:10 am
Forum: Professionals
Topic: Falcon DSP mp2 replay frequency
Replies: 16
Views: 7335

Falcon DSP mp2 replay frequency

I'm new to the Falcon and I'm currently using the DHS framework to start doing some stuff. I use the included mp2 player but it seems it doesn't replay the file at the correct frequency. For instance when I use a 48kHz mp2 file, it's played a bit too fast (actually I can see this since I'm trying to...
by fenarinarsa
Tue Oct 16, 2018 3:15 pm
Forum: Hardware
Topic: Read Falcon IDE drive on PC
Replies: 17
Views: 8980

Re: Read Falcon IDE drive on PC

Just for you to know, I tried driveimage on Win10 and it works in XP SP3 compatibility mode + run as admin. But this tool is not really good to manage a lot of files on the hard disks or transfer directories... What I discovered though is that on Linux you can use Hatari to directly access the drive...
by fenarinarsa
Tue Oct 09, 2018 10:55 pm
Forum: Professionals
Topic: How to find damaged trace? [SOLVED]
Replies: 18
Views: 6871

Re: How to find damaged trace?

Hi, in my case for fix the nvram nightmare was checking all the u64, contacts, i checked this check list: 64/Pin1 Power 5V U64/Pin2 not connected or not used U64/Pin3 not connected or not used U64/Pin4 AD0 <-> U31/Pin41 (...) OMG thanks a lot for the checklist, I just changed the NVRAM and my Falco...
by fenarinarsa
Fri Jan 26, 2018 12:21 am
Forum: Games - General
Topic: Enchanted Land parallax scroll
Replies: 21
Views: 7537

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: 7537

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: 7537

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: 4373

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: 67
Views: 30745

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: 67
Views: 30745

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: 67
Views: 30745

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: 67
Views: 30745

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: 7686

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: 4
Views: 6274

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: 4
Views: 6274

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: 67
Views: 30745

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: 67
Views: 30745

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: 145
Views: 62898

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: 145
Views: 62898

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: 67
Views: 30745

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: 67
Views: 30745

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 ...

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