Best demos

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By wolf_

Ambassador_ (10076)

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02-12-2022, 19:22

Well, the thing is: using MSX2 bitmap modes and scroll registers, there's not much you can do in this context. The intro, I guess, with that moon landscape scrolling sideways. Other than that, the 9938 isn't going to cut it. For speed you'll need pattern mode, however blocky it is. It's just that creating non-rectangular shapes with those tiles (and possibly on-the-fly) is kind of crappy. Some things would be reasonable to do, I happen to have been thinking about how to do several parts for MSX2 today. But generally I doubt anything will work out.

There happens to be a gameboy version, but as you'll see it's rather incomplete and far from the C64-version: https://www.youtube.com/watch?v=L3JCDKLYA_M

I fear, whatever we may come up with will be closer to that GB-version than to any other version... ;(

By wolf_

Ambassador_ (10076)

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02-12-2022, 19:25

By santiontanon

Paragon (1734)

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02-12-2022, 20:29

Wow, the spectrum demo is pretty good!! Impressive!! About the GB version of Second Reality... well, it leaves a lot to be desired haha

By Accumulator

Expert (116)

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02-12-2022, 22:49

The first part of Second Reality with the moonscape and flying object is possible in screen 5.
The moon and 1 layer of stars smooth scrolling using 2 screen 5 pages, VDP 19 and copy block on other page when moving 1 pixel. layer 2 & 3 (stars moving faster) by sprites 16 and 16 even faster.
The space ship can be done in screen 4 (screensplit) or even 5.
First part I do not see a problem, but we can even enhance.
Second, with checkerboard, screen 5 and changing sprites..

@wolf_..

With the changing points / patterns... Thinking of source of power /anma

By max_iwamoto

Hero (627)

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02-12-2022, 23:46

santiontanon wrote:

Wow, the spectrum demo is pretty good!! Impressive!! About the GB version of Second Reality... well, it leaves a lot to be desired haha

Here is a ZX-Spectrum demo released in 1997 (August) before 2nd Reality and has a few effects seen in 2nd Reality.

Also, a few things in this demo have been influenced by MSX Smile It also uses loading from disk while playing video effects. Aleste's pictures colors in it look very close to MSX screen 8 and display way more than 8 original colors available on ZX-Spectrum (especially the last picture).

https://www.youtube.com/watch?v=6_27EJjjt48

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And the previous version of this demo (August 1996) has few references to Amiga. Whole demo fits in one basic file 36KB. Interesting how all three systems came together...

https://www.youtube.com/watch?v=K2ydsbiwOWg

I would recommend watching the two above demos on a real computer because it uses multi-screen flickering and it is very hard to emulate, even on real emulators.

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If the two demos above are trackmos (another Amiga influence), here is the Megademo which has some nice effects and has been released in 1995 before Amiga influence completely took over.

I want to point especially to the part at 42:18 which has a size of 5KB and has full-screen effects. Both balls are moveable and calculated in real-time.

https://www.youtube.com/watch?v=b_aX9mke23A

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And if we go all the way back to 1994 to the 1st Megademo, this one looks very primitive now. But also have stuff from MSX Nemesis in the Star Wars part. Don't get fooled by the "THE END" at the half of the demo :)

https://www.youtube.com/watch?v=KcCBo4dBfMk

By santiontanon

Paragon (1734)

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03-12-2022, 19:02

Wow, I am very impressed by Aye Ache 2! That is extremely cool! And indeed, lots of effects similar to Second Reality, better done that I thought would be possible on a Spectrum, very cool! (and I noticed a reference to your name there as well haha, nice!)

By Accumulator

Expert (116)

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05-12-2022, 00:32

A megademo for TI-99/4A can be found here

The TI-99/4A is running on 3 MHZ, however it uses the same or similar VDP V9918. The possibilities regarding video tricks should be similar as MSX.

Check for sources and editors the GitHub account of Rasmus-M

We can learn a lot from his sources! Rasmus, thank you!!

The coding should be converted from 16 bit TI to 8 bit Zilog, but I think that is not so difficult...

By salutte

Master (163)

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06-12-2022, 12:22

there was some debate on what constitutes a demo and what does not. IMHO, "video-encoded" demos are fully valid demos as long as it is clear that the intend is to show a video. I.e., the classical example of which is the "bad apple" class demo.

In MSX1 I particularly enjoy the "video-encoded" demos, because of the limitations of bandwidth of the TMS9918, you can not contiuously stream content to the VRAM and fill the screen each frame. You need to be very careful when selecting what you can send to the device, which ends up being a quite fun pre-processing job. MSX1 poses quite unique challenges, as mappers allow for instant and cycle-accurate access to a MB sized storage, but TMS9918 bandwith and palette limitations are way worse than on shared memory architectures.

MSX happens to be a super rich architecture, and IMHO we should leverage its richness to have fun and awe others!

By PingPong

Prophet (4088)

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06-12-2022, 16:27

I Agree to the fact is a superior architecture. the only weak point on MSX (especially msx1) is the TMS VDP. If they used a less limited- improved version of this chip (as it was on SMS) that would be a fantastic machine!
However, on msx you have no hw brake, as in TI/99 that is you can push data at maximum limit the VDP allow. TI/99 have trouble to overrun the VDP because there is a heavy brake that does not allow this. So teoretically we can push more than a TI/99 can. Of course we need to be careful because there is no safe net to protect us to loose data....

By santiontanon

Paragon (1734)

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07-12-2022, 15:47

Hehe, I have mixed feelings about demos like "bad apple", on the one hand, the challenge to encode/compress/send the data at high speed is nice, but then I only find it interesting if you add constraints (e.g., limiting to MSX1, or trying to do the best possible with a single 128KB MegaROM, etc.), once constraints start to be lifted and additional hardware is used, then it's not something that I am very interested in anymore haha (but again, that's just my preference, I understand that others are excited to see what can be done with new hardware).

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