SpritesMind.Net

PSG is not very good at playing samples, and I think it will be slower than mixing 8-bit samples. Duke3D can mix 3 channels with music pretty good.

I just downloaded it, but I can't test it when I get home.

I guess, it is simpler to use 4-bit PCM than DPCM or ADPCM, I can't imagine getting sampling rate over 8KHz decoding DPCM/ADPCM with z80. All of these formats cause some noise, and it ruins the sound when sampling rate is low but 4-bit PCM does not need to be decoded so sampling rate can be as high ...

Flame war... ah $h1T, Easy68K IDE sucks and QB IDE does not !!! As much as I played with it, it didn't prove to be much better than notepad.
Everyone has his/her own preferred tools and I don't want to argue about it !!!

It will use similiar techniques found in Sonic with my own quirks. For sprites, I probably update sprite patterns in VRAM or do like I did with GBMD, load all graphics into VRAM and don't do any updates during the game. I don't actually know how much tiles I would need for one stage, if there's not ...

Stef wrote:I guess you see 30 FPS only, du to the 30 Keys Per Second limit.

That explains the lag between keystroke (or button press (I use gamepad, modified MD 6-buttoner)) and event in game...

Who is Christuserloeser ?

You all are very helpful and I don't hesitate to ask if I'm in trouble. I will ask stuff for sure, because I started MD programming last year in september and there's much for me to learn about that magnificent machine.

After I finish GBMD (it needs some work) I'm going to write a action game which is pretty much like Contra or Metal Slug (NeoGeo). Main character: http://www.hot.ee/tmeeco/CA.PNG I made this decision yesterday, originally I planned to make a PC version in QB (or FB) but then again, MD is little easi...

How do you know that it is 60FPS ? I would add a FPS counter into my program, see the result and then let the program run as fast as machine would go (and beyond by overclocking...) and compare the results...

oops, there were some inaccuracies in my code (well, I wrote it by heart and with winter gloves(don't ask why :wink: )), I fixed the code. As far as i know, DPCM is just delta and ADPCM is delta which can change a little. DPCM would be much simpler to decode than ADPCM. still, you need to be a wizar...

Audio converter in QB, converts ordinary 8-bit PCM wav to 4-bit PCM: open "wavfile.wav" for binary as #1 'open source file open "convert.4bt" for binary as #2 'destination file Lenght&=(lof(1)-58)\2 'get the lenght - header seek #1, 58 'skip header for i& = 0 to Lenght& 'loop until all data processe...

I might be incorrect: * VDP reads data from the scrolldata * then reads graphics according to data from scrolldata * and then adds displacement (amount of scroll) to the graphics * and displays the stuff that fits the screen And the last result is: scrolldata remains unchanged I hope it is not too c...

OK, who is writing something ??? I am with some breaks

Z80 is there for SMS compatibility thats why YM2612 int is not connected.