SpritesMind.Net

it is very difficult to hear it but the blip sound (it's more something like cymbals, tingtingtingtingting, very fast) is there, in background (which means, very very low) try the same bgm in an emulator (not kega off course) to get an idea about this sound then listen to your OGG again, it's mostly...

This is crazy

ok, I think I understood so, to resume: 1/ genesis default mode is 240p (288p) and generates 262 (313) unique "superposed" lines per frame (exact framerate is unknown ?) resulting in a gap between each scanline. 313 lines in PAL is maybe because line 1 (odd field) out of 625 is drawn first on a PAL ...

It's too bad Steve Snake never shared with you his finding about this one
He probably made thousand of test program to finally get it

You're thinking about it wrong: there are two fields that make up each frame, an even and an odd field. We say the field rate is 60Hz because every 60th of a second, ONE of the two fields is displayed. Since a single field is not the entire frame, the field rate is not the frame rate. It takes two ...

There is a racing game (championship pro arm?) that is using this mode for two player too... If I remember. I think it's Combat Cars... it also relies on a proper vcounter emulation to display properly (note that the sega's manual seems wrong about this when using interlaced 2 mode) so, if I unders...

My MD2 doesn't do this "blip" sound... as I said, it's only present in some specific games and at a very low level, making it sound a lot more "normal" To hear it on real hardware, I guess you will need to set the volume high enough and to know exactly what you are looking for since it's covered by...

Are you speaking about how interlaced display generally work or about the specific Genesis interlaced modes ? I also wonder how the interlaced VDP modes 1&2 both work and the differences between them ... Anyway, I thought the genesis display was not interlaced, ie it displayed the same half amount o...

I recently made some testing about this YM2612 "bug" and discovered the following (I'm probably not the first one discovering this but I hope we could finally managed to understand how the "bug" really work): 1/ every game producing this noisy sound on emulators seem to use the same sound engine: GE...

In Sonic 3, the value in Hint reg correspondends to the line where water is... and 255 is when there's no water. as far as I know, register #10 setups a counter which is only decremented on lines 0-224. The counter value is reloaed: 1/ at the start of a new frame 2/ when the counter expired (Hint b...

OK I got IPL1 and video on the scope, It's triggered on line 255 (the scope says, but at the end of VSYNC it's already line 7... Question ), but how do I count cycles? from line 255 to IPL1? the clock of 53MHz is so damn fast... even 13MHz is so much... maybe you could get the cycle count either fr...

HAHA, ROTFLOL! Syncs look like this: only the vertical blanking period is shown... C-sync[1] + Vsync[2] http://img210.imageshack.us/img210/295/csvsov2.th.jpg Video [1] + Hsync[2] http://img210.imageshack.us/img210/8271/cvhsvq7.th.jpg cell phone pics.... :( If anyone wants too see something on the s...

I don't know for sure. I've seen a line vary in length, but not that much. I'll ask Charles if he tested/measured the line with an oscope. Patents and docs are known to be wrong. I can test it myself if it's that important. As for 342 isn't too far off from 341 considering all the rounding involved...

Did you miss the formula that I posted? 40 CELL mode uses a 6.7125Mhz dot clock and 32 CELL mode uses a 5.37mhz dot clock. That's what defines the "width" of a pixel for determining correct pixel aspect ratio and overscan area. 6.7125mhz/ 15735hz = 426 dot clock(pixel) length scanline / 1.186 (not ...

thanks again... how do you know that the active witdh is 352 pixels in H40 mode ? anyway, that's effectively how I planned to do, I especially wanted to see those vertical borders when the emulated genesis run in PAL mode but accurate ratio is also something important about H32 mode, the SMS VDP ref...