Search found 211 matches

by Oerg866
Mon Jul 23, 2012 8:28 pm
Forum: Demos
Topic: Direct Color Demo using DMA
Replies: 89
Views: 48118

It is not bad to have a separate thread for that so we can find it easily. Also the demo you posted did not worked (at least for me) where Chilly Willy ones does which may explain why people has now more interest about the method :) The original topic you are talking about is this one ? I had my bi...
by Oerg866
Mon Jul 23, 2012 8:09 pm
Forum: Demos
Topic: Direct Color Demo using DMA
Replies: 89
Views: 48118

First, the only thing from your demo is the loop that sets up the dma, and even that had to be rewritten for GAS syntax. Second, from what's been said and the comments, this is about the only way to get the timing, which means that whole loop is a FUNCTIONAL dependency, and thus not eligible for co...
by Oerg866
Mon Jul 23, 2012 6:48 pm
Forum: Demos
Topic: Direct Color Demo using DMA
Replies: 89
Views: 48118

Let me get this straight, I posted the source to my implementation only to have some person reuse the code even if the readme kinda forbids it and in turn bash my proof of concept demo and accept 2 pages of praise in return...? nice going, spritesmind I know, I might sound like being an asshole, but...
by Oerg866
Mon Jul 23, 2012 4:43 pm
Forum: Demos
Topic: Direct Color Demo using DMA
Replies: 89
Views: 48118

I like the idea of using it on the MD much more rewarding than on the Sega CD tbh... sure it seems predestined for it, but exploiting such things on the original system is where the fun is ;)
by Oerg866
Mon Jul 23, 2012 3:11 am
Forum: Demos
Topic: Direct Color Demo using DMA
Replies: 89
Views: 48118

ALSO About the guy's distorted head etc., There is certain parts of every line that are twice as wide, as in double "pixels", which is small lag induced by refresh cycles. No writes occur, so the DMA doesn't advance, hence "double pixels" occuring. Hardware issue, not image issue. Well, it doesn't ...
by Oerg866
Mon Jul 23, 2012 12:59 am
Forum: Demos
Topic: Direct Color Demo using DMA
Replies: 89
Views: 48118

Neat ! As you said i really wonder why this had never been used for Sega CD FMV, maybe simply because no one though about it :p The sub CPU could decompress and prepare the 192x224 9 bits (word) buffer then send it to main CPU in word ram at VBlank time. Also we can use border to extends the vertic...
by Oerg866
Sun Jul 22, 2012 12:00 pm
Forum: Demos
Topic: Direct Color Demo using DMA
Replies: 89
Views: 48118

Re: Direct Color Demo using DMA

Okay, so what I originally invisioned are static screens and parts. You can blank the display mid-screen, use the top portion of the screen for some kind of other thing like a scroller or something, then have a high color bitmap in the other. As for the suckey image, well, we just wanted an image wi...
by Oerg866
Fri Jul 20, 2012 11:58 pm
Forum: Video Display Processor
Topic: show a 256 colors picture in MD
Replies: 21
Views: 17713

Here it is... Cleaned it up a bit... http://oerg866.mdscene.net/BITMAP.zip
by Oerg866
Thu Jul 05, 2012 12:01 pm
Forum: Hardware
Topic: Best current Genesis clone out there?
Replies: 5
Views: 5012

Don't bother. All current clones suck the big one.
by Oerg866
Thu Jul 05, 2012 10:46 am
Forum: Tools
Topic: Questions about the Echo sound engine
Replies: 12
Views: 5376

djcouchycouch wrote:
Oerg866 wrote: Make sure you got the loading code in and everything like the sgdk example shows you,
Which loading code and sgdk example would those be?
The SGDK kit should have some explanations in it (as comments in the source files, iirc)
by Oerg866
Wed Jul 04, 2012 4:28 pm
Forum: Tools
Topic: Questions about the Echo sound engine
Replies: 12
Views: 5376

After converting the song with xm2esf, how would it be imported/compiled into my SGDK-based project? How do I refer to the data so I can pass it to Echo's functions? Before using xm2esf, you must gather all samples, psg envelopes and FM instruments you intend to use, and build an instrument pointer...
by Oerg866
Wed Jul 04, 2012 12:24 pm
Forum: Tools
Topic: Questions about the Echo sound engine
Replies: 12
Views: 5376

I make an XM file with fixed channel layout and try to make something that sounds good. if it does sound to my liking, i start making the MD version of it with xm2esf. It's quite simple.

http://projectmd.mdscene.net

I made the entire game's soundtrack like that.
by Oerg866
Tue Jul 03, 2012 6:03 pm
Forum: Tools
Topic: Questions about the Echo sound engine
Replies: 12
Views: 5376

djcouchycouch wrote:What would be your recommended/favorite tracker program?
OpenMPT ;)
by Oerg866
Tue Jul 03, 2012 5:36 pm
Forum: Tools
Topic: Questions about the Echo sound engine
Replies: 12
Views: 5376

- does it support whatever TFM and VGM trackers output? Not at this time, because the two formats are so different. My tool "xm2esf" takes any XM tracker output though, and converts it quite accurately. - do sound effects play on the genesis sound chip or the mastersystem sound chip? both? Both! All...
by Oerg866
Tue Jul 03, 2012 2:56 pm
Forum: Video Display Processor
Topic: show a 256 colors picture in MD
Replies: 21
Views: 17713

Yeah, emulators aren't designed to handle this... neither Gens/GS nor Fusion handle it correctly. It works great on my CDX - very stable. Any source on this? I'd like to do some experimenting with it. :D as soon as I can be bothered to boot up my old barebone again :D (I wrote the code on a tiny at...