pouët.net

krusty information 702 glöps

• general:
• level: user
• personal:
• portals:
• demozoo: profile
• cdcs:
• cdc #1: Ecole Buissoniere by Overlanders [web]
• cdc #2: Batman Forever by Batman Group
• cdc #3: Still Rising by Vanity [web]
• cdc #4: Isometrikum by Vanity [web]

• demo Amstrad Plus 3DManiaks2 by Impact
• Interesting and original show for the plus platform.
  Too long in my opinion
• rulezadded on the 2025-04-20 10:41:01
• 256b Atari XL/XE Sprout by Agenda & Ilmenit
• Really nice
• rulezadded on the 2025-04-16 07:38:39
• demo ZX Spectrum Add Mortem by Arise & Joker [web]
• very "nice" show
• rulezadded on the 2025-04-14 22:46:07
• 4k ZX Enhanced RED SUPREMACY by Virtual Vision Group
• No idea if there's a political message there, but I really like the fact of having some abstract stuffs on a low end machine
• rulezadded on the 2025-04-07 09:32:15
• musicdisk Amstrad CPC Amstrad Plus 40 Years Of Magic
• Why is it on pouet?
• sucksadded on the 2025-01-21 07:52:33
• 40k Amstrad CPC Amstrad Plus Flush wishes you a happy new year 2025 by Flush
• Cute and well polished!
  I can't stand the music, sorry. I do not get the point with normal vs oral however
• rulezadded on the 2025-01-13 22:10:12
• demo Amstrad CPC Ghost NOP by Pulpo Corrosivo & Futurs [web]
• To change an address requires to "out" 4 bit values (2 to select the video chip register, 2 to set the low/high byte address)
  The adress is restricted to the memory areas 0x0000-0x07fff, 0x4000-0x47fff, 0x8000-0x87fff, 0xc000-0xc7fff at off values. This is the maximum amount of video memory available when playing with video chip to be able to change the video address one time per line and displaying demo effects.
  
  For the twister screen, i guess it is as following. But I may be completely wrong.
  
  It is impossible to copy pixels for the moving character and there are not enough memory to store the animation.
  
  To display the character is cpu intensive. The background is composed of vertical stripes of pens and the ink of each pen must be change every few lines. As you do that several time you mimick zoomed pixels. We name that magic raster and I guess it comes from atari demos.
  
  This is wobbly because inks are changed at various pace and there are several variations of the striped background for different zoom levels. 2 outs per stripe (1 to select the pen, one to set the ink)
  
  For the twister, I do not know. This is the part that makes the screen less easy to do, in my opinion. Maybe there are T twister steps and Z background zoom factor and thus T×Z versions in memory.
  Maybe it is drawn in real-time by handling the edges (but there are some points that vote against that).
  Maybe drawn completely.
  Or a mix of that plus other things
• isokadded on the 2024-12-29 10:02:00
• demo Amstrad CPC Ghost NOP by Pulpo Corrosivo & Futurs [web]
• Quote:

  Can you change the screen/display address mid scanline on CPC? To any address?

  
  
  Not exactly. There are plenty of constraints (the CPU time it takes to address the video contraoller chip + constraints on the the available addresses for that purpose.
  
  However, I'm pretty sure such kind of trick has been used to display the 284x372 logo and the following volume meter (see around 2min in the linked youtube video)
  
  Then most effects changes the display address at most once per scanline, but I doubt there are save/restore buffer stuff. Let's wait the making off
• isokadded on the 2024-12-25 08:06:28
• demo Amiga OCS/ECS Blood Sugar Rises by AttentionWhore
• Original and nice to look at
• rulezadded on the 2024-12-21 11:51:58
• demo JavaScript Honig Senf Panne by Mal Anders
• Messy as we like
• rulezadded on the 2024-12-21 11:36:13