Adnukes by Lieves!Tuore [web]
screenshot added by Marq on 2010-08-21 20:40:50
platform :
type :
release date : august 2010
release party : MSX Info Update 2010
compo : combined demo
ranked : 1st
  • 7
  • 5
  • 0
popularity : 54%
  • 0.58
alltime top: #13484
added on the 2010-08-21 20:40:50 by Marq Marq

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Would have been better with some music.
added on the 2010-08-21 21:29:24 by hitchhikr hitchhikr
Maybe I'm biased since I provided some of the photos, but the coder guys being able to get a plain MSX1 to show this many colors is amazing and pushing the machine to it's limits.
rulez added on the 2010-08-21 23:39:29 by manu manu
Yes, probably most non-MSX people have a hard time understanding what merit this demo could possibly have, but it's not only the number of colors, it's also the fact that poor old MSX1's "screen 2" graphics mode only allows 2 different colors (out of a fixed palette of 15 colors) inside each 8x1 pixel block.

We didn't want to have music, because on an MSX, interrupts must be disabled when loading from disk, because each manufacturer's disk drive requires different timings provided by the drive's own interface ROM routines. So we would have had to stop the music between pictures.
added on the 2010-08-22 00:08:15 by yzi yzi
Nicely done!
rulez added on the 2010-08-22 00:13:22 by Haohmaru Haohmaru
I'm always up for respecting completely hardcore new graphics modes on old machines, but what resolution, how many colours is this prod achieving, for us non-MSX people please :-)
added on the 2010-08-22 01:18:34 by CiH CiH
Basically it's 256x192 with 15 fixed (ugly) colors and one graphics page. Two colors for a 8x1 block. The vram is not memory-mapped but accessed through a port. Here with partial realtime updating 120 flicker colors are possible, but in addition to that there's dithering and interlacing to make the combinations smoother.
added on the 2010-08-22 08:46:38 by Marq Marq
for the tech !
rulez added on the 2010-08-22 11:46:53 by ɧ4ɾɗվ. ɧ4ɾɗվ.
Very cool and about time!
rulez added on the 2010-08-22 13:47:43 by linde linde
A standalone viewer for the images available now:
added on the 2010-08-24 08:29:10 by Marq Marq
what hArDy said
rulez added on the 2010-08-26 13:55:21 by tobé tobé
Is the screen flicker thing is really an achievement for the MSX? In 1990s it was made for almost every 8-bit system with low color resolution, and had no real use other than few demos and sometimes (almost unusable) games.
added on the 2010-09-01 21:47:54 by Shiru Shiru
Flicker colors through page flipping definitely isn't an achievement, but there's other things like interlace, special dithering (in the converter side), realtime screen update and more involved. Screen 2 doesn't even have two pages to flip.
added on the 2010-09-01 23:43:15 by Marq Marq
The demo needs an "MSX 1 and screen 2 for dummies" explanation. For example:
- On an MSX1, you have 16kB video RAM
- The video memory is not memory-mapped so the CPU can't just write stuff to it (like e.g. C64 or ZX Spectrum can), but you need to access it through IO port commands
- The VDP (video chip) is so slow that if you use 100% CPU, you can upload about 3kB of stuff during a 1/50s frame.
- Screen 2 (256x192 "multicolor" mode where you can have 2 colors out of 15 for each 8x1 block) doesn't have any "pages" because there's only 16kB of video memory
- Even if memory allowed, the VDP1 doesn't have page-flipping to begin with, no "scroll register" or stuff like that. The only thing you can do is flip the "name table" to another location, allowing you to change the contents of the screen without uploading data through IO commands, but there's only a single "character" (i.e. 8x8 block) space.
added on the 2010-09-02 13:18:32 by yzi yzi
Belated thumb from my last comment.
rulez added on the 2010-09-15 10:30:06 by CiH CiH
Video here :


Thanks to blueMSX special feature, no any flickering !
rulez added on the 2011-09-14 11:50:51 by mars2000 mars2000
nice tech

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