Search found 381 matches

by mk79
Wed Oct 30, 2019 11:30 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

QLvsJAGUAR wrote:Had some spare minutes after work, here‘s my little contribution:
https://youtu.be/LMbZZe4UWA0
Thanks Urs, I thought about doing that, too, but it's basically cheating ;)

Cheers, Marcel
by mk79
Wed Oct 30, 2019 10:35 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

What's the equivalent QL speed of that emulator? I'm guessing not stock 7.5MHz :D As somebody who wrote both the emulator and the movie player in question I'd venture a guess of a 200-1000x speedup, depending on the exact scenario ;) The movie player displays RLE compressed full sprites, so no diff...
by mk79
Wed Oct 30, 2019 10:23 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

At that speed it might just work on a stock QL, which seems to be about 1/6th the speed of the SGC. At 25 fps, that demo seems to require 35% (loading) + 17% (decompression+playback) = 52% of SGC resources as a rough estimate. So the QL would have to be 1/2 the speed of the SGC, not 1/6. Or the dem...
by mk79
Wed Oct 30, 2019 10:21 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

Now off to bed. Enjoy, Marcel That's absolutely amazing! What sort of algorithm are you using for that? Thanks! Well, the design constraints were to minimize development time and maximize execution speed at the expense of code size. So I basically wrote a bitmap to 68k-code compiler. The difference...
by mk79
Tue Oct 29, 2019 11:41 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

vanpeebles wrote:Will you be doing a kit with the AY setup and software?
The software will be free and QPC will have AY support built in. I don't intend to build any hardware, this was strictly a proof of concept.
by mk79
Tue Oct 29, 2019 11:39 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

I really shouldn't be doing this because I don't have the time for it right now, but it was intriguing enough that I had a short stab at the problem while watching a movie with my wife... Here are the first 500 frames of the video running at max speed on a SGC, which in this case is about 150 frames...
by mk79
Mon Oct 28, 2019 7:32 am
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

vanpeebles wrote:Can you play chip choons???

Choons? I've got a player for most popular Spectrum file formats if that's what you're asking. Will make a video some day.
by mk79
Sun Oct 27, 2019 2:44 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

vanpeebles wrote:I think you should be telling us a lot more about your AY equipped QL too :ugeek:
Well, it's a QL. With an AY chip :-) Connected to the SGC PAR port. Quite simple really. One of many things I've been playing with the last year and didn't find the time to actually document/release.
by mk79
Thu Oct 24, 2019 1:45 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

Sure, with some pain you can do some music. But probably not this specific music. Even the Spectrum version uses 6 tracks (so three more than my AY-3-8910 equipped QL can do at the moment), I don't think a single track QL version would knock anyone's socks off. But I like to be proven wrong ;)
by mk79
Thu Oct 24, 2019 12:25 pm
Forum: General QL Chat
Topic: Bad Apple demos
Replies: 62
Views: 3204

Re: Bad Apple demos

I actually do have a QL that is equipped with the Spectrum sound chip, so that is feasible in theory. But an unmodified QL would certainly be a problem sound-wise.