Search found 141 matches

by gasega68k
Mon Aug 26, 2013 9:09 pm
Forum: Demos
Topic: wolfenstein demo for sega genesis
Replies: 364
Views: 468770

I just discovered a bug in the code that could cause the 68000 remains in an infinite loop. See this piece of code (The 68000 code is runing During VBLANK): z80 code: ld (hl),$ff ;$1ff0 ld (ix+0),$2a ;$4000 ld (ix+1),a ;$4001 => out ld (hl),$00 ;$1ff0 68000 code: ym2612wr: ; a0 = $a04000 move.w #$10...
by gasega68k
Mon Aug 26, 2013 9:08 pm
Forum: Demos
Topic: wolfenstein demo for sega genesis
Replies: 364
Views: 468770

I just discovered a bug in the code that could cause the 68000 remains in an infinite loop. See this piece of code (The 68000 code is runing During VBLANK): z80 code: ld (hl),$ff ;$1ff0 ld (ix+0),$2a ;$4000 ld (ix+1),a ;$4001 => out ld (hl),$00 ;$1ff0 68000 code: ym2612wr: ; a0 = $a04000 move.w #$10...
by gasega68k
Sat Aug 24, 2013 7:44 pm
Forum: Demos
Topic: wolfenstein demo for sega genesis
Replies: 364
Views: 468770

Well, I'm here again. I'm working on the pushable walls, the player's hand/weapon and some other things (objects?). Very soon I will post an update of my demo.

About Duke Nukem 3D, I think the problem was the palette that they used for the walls and enemies (too many gray).
by gasega68k
Fri Aug 23, 2013 4:54 am
Forum: Demos
Topic: wolfenstein demo for sega genesis
Replies: 364
Views: 468770

Thanks to all comments again. You said you don't need to double buffer, this is because you can upload the whole screen in VRAM in a single frame ? If that is the case i assume you prepare your screen buffer so it is directly organized as tiles so you can ue the full DMA speed to upload in VRAM ? Ye...
by gasega68k
Thu Aug 22, 2013 8:46 pm
Forum: Demos
Topic: wolfenstein demo for sega genesis
Replies: 364
Views: 468770

Thanks for all your comments, I've been working on this demo for about a year. I started looking for different techniques raycast, I found the source code for PC but at first I found difficult to do in sega genesis (and some parts did not understand), so I set aside. I started to try some tutorials ...
by gasega68k
Thu Aug 22, 2013 5:25 am
Forum: Demos
Topic: wolfenstein demo for sega genesis
Replies: 364
Views: 468770

wolfenstein demo for sega genesis

This is a demo of wolfenstein for sega genesis written in asm. Mostly is based on the source code of wolfenstein 3d for PC. (sorry for my bad english) :) Here is a video of the demo: http://youtu.be/BHtKv_cwgVk Version b5.5(January 10, 2014): http://www.mediafire.com/download/lbwpwho94k15xv3/wolf3dd...