Search found 478 matches

by r57shell
Wed Feb 27, 2013 8:25 am
Forum: Sound
Topic: YM2612 Timers
Replies: 28
Views: 8199

Give me NTSC Master clock & YM2612 clock for info) 18µs not differs? Differs sequences timing only? (because based on VBLANK) Is it right?
by r57shell
Wed Feb 27, 2013 7:44 am
Forum: Sound
Topic: YM2612 Timers
Replies: 28
Views: 8199

55.075kHz = 18.15µs Problems with math? Those calculations was from image measuring - As I told. On your image noted 3.03µs. 6 channels -> 18.18µs. It's not same as you writed. 23 cycles / 3.03 µs = 7 590 759 Hz. It's not same with label in bottom of your image. Assuming 7 692 000 Hz - correct cloc...
by r57shell
Tue Feb 26, 2013 7:05 pm
Forum: Sound
Topic: YM2612 Timers
Replies: 28
Views: 8199

In UMK3 too many DMA, is it reason why PCM played only 6500 Hz?
I made some test: I removed timer overflow check, and I got same 6500 Hz. But If I change timer to 5200 Hz, for example - it works well.
Wanna cool sound (((.
by r57shell
Tue Feb 26, 2013 6:20 pm
Forum: Sound
Topic: YM2612 Timers
Replies: 28
Views: 8199

TmEE co.(TM)
How many PCM you can mix and samplerate?
UMK3 can play maximum 2 PCM, each 6500 Hz. Quite ugly.
by r57shell
Tue Feb 26, 2013 6:16 pm
Forum: Sound
Topic: YM2612 Timers
Replies: 28
Views: 8199

Thanks for info. From picture http://nemesis.hacking-cult.org/MegaDrive/Documentation/multiplexing.png image measures gives: 19.1 +- 0.2 µs delay between switch channels returns. http://nemesis.hacking-cult.org/MegaDrive/Documentation/multiplexing3.png I DON'T see 24 clock cycles between them, 23 on...
by r57shell
Tue Feb 26, 2013 3:20 pm
Forum: Sound
Topic: YM2612 Timers
Replies: 28
Views: 8199

YM2612 Timers

I just tired in searching for precise info. Common formula: 18 * (1024 - TIMER A) microseconds Timer A - all 1's -> 18 µs = 0.018 ms But, I think it is not precise. Where it goes from? I suppose 18µ goes from 1s / 53267 Hz = 18,773349353258114780257945820114 µs But I'm not sure, in this. And... 5326...
by r57shell
Fri Feb 08, 2013 11:27 am
Forum: Tools
Topic: Sprites Splitter
Replies: 8
Views: 2805

Video related to this topic. :)
http://youtu.be/5la3tQe7B_0
by r57shell
Thu Feb 07, 2013 5:52 pm
Forum: Tools
Topic: Sprites Splitter
Replies: 8
Views: 2805

I have already done some steps in this way.
I have implemeted one algorithm to do that, but it still not good enough.

I think, it is not new "Topic" or "Idea". So, there must be good software for doing it. I hope.
by r57shell
Thu Feb 07, 2013 2:25 pm
Forum: Tools
Topic: Sprites Splitter
Replies: 8
Views: 2805

Author is you?
This program is quite big. Many dependencies. I don't like it.
Is there command line interface?

I need to find program or algorithm that gives such result.
I prefer command line interface.
by r57shell
Thu Feb 07, 2013 9:26 am
Forum: Tools
Topic: Sprites Splitter
Replies: 8
Views: 2805

Sprites Splitter

Looking for Tool: Given: Large Sprite. Output: Coordinates, Size of boxes. Condition: gold middle (tiles count)/(sprites count). Examples: From ---> To http://i3.imageban.ru/out/2013/02/07/7ae3f8635b564beb37bd53f256b5def9.png --->>> http://i3.imageban.ru/out/2013/02/07/351469bd9844a06d9f18f98f01ed6c...
by r57shell
Thu Jan 03, 2013 3:51 pm
Forum: Sound
Topic: Looking for latest GEMS
Replies: 29
Views: 10171

Big thanks. I did some research... I wrote some script on Perl to extract and compare dumps of GEMS z80 driver from romset. Only dumps - not asm. So summary I have GEMS dumps from 1331 rom, it's from 214 different games. It's 27 different GEMS dump from games. Only z80 code - main driver. Not all do...
by r57shell
Fri Dec 28, 2012 10:07 am
Forum: Sound
Topic: Looking for latest GEMS
Replies: 29
Views: 10171

TmEE co.(TM) wrote:I got GEMS 2.8
I'm glad that you got it. But, where I can get it?) And, is it latest version?

About midi2gems - I don't know, but I wrote gems2midi -_-
by r57shell
Thu Dec 27, 2012 11:50 pm
Forum: Sound
Topic: Looking for latest GEMS
Replies: 29
Views: 10171

Looking for latest GEMS

Ok, let's start. I'm searching for GEMS devkits. I spent few days already in google :D. I've found only GEMS devkit for 2.1, and for 2.5. But, nevermind. I want only latest possible version or best version of GEMS. Where can I get it?) I see only one way: rip from some game, but... I don't know whic...