SpritesMind.Net

It's because you aren't using volatile on pressed. It is set by the callback, which is changed by an interrupt, so the variable needs to be set as volatile to force the loop to reread the variable from memory each time the while loop occurs. The drawText makes it work because all the registers get ...

I may be wrong, but I noticed that loops with only VDP_waitVSync() inside seem to be "overoptimized" and the VDP_waitVSync() ignored.

Try to compile with debug mode (just add debug to the end of your make.exe -f ...).

No, there's no way to avoid flickering. If SH2 uses sprites, then it doesn't reach the limits of 20 sprites or 320 pixels per scanline. The sprites are not very wide, so this is likely. The low framerate and choppy movement is mainly due to the fact that the MD can't do zoom, so there are frames at ...

Golden Axe SMS puts sprites in the background IIRC (Space Harrier SMS and Altered Beast SMS too). It can be seen by the fact that the "transparent pixels" around the sprite are opaque.

Is that this effect you want to reproduce ?

Sorry for the dumb question, but how is VBlank triggered ? I guess it's an internal clock to the VDP ? So how is it possible this way measuring a timing problem in the VDP ? And I guess the CPU is timed the same way. So how do we differentiate a problem with the VDP and a problem with the CPU ? Sorr...

Just out of curiosity, how do you know the loop lasts exactly one second without counting cycles ?

Thank you

Ah ah

I hate you

It took me 5 hours to install VS2013, I have no more room on my HDD. I'm uninstalling everything, and try again

I suck terribly when it comes to configure a compilation chain, and thus, I failed at compiling Exodus. Here are the instructions from https://www.exodusemulator.com/downloads/source : To setup your development environment, do the following: Download and install Visual Studio 2013 Community Edition ...

Just guessing : because he's French and plane is "plan" in French ?

Thanks a lot, it'll be very useful.

I'm digging into MAME source code. It's really interesting. But file locations are sometimes weird. Why is the Megadrive VDP code (315_5313.cpp) in devices subdir and not in video ? Header files can be anywhere and some of them contains code...

I guess you're right. Fortunately there are some documents describing the source code. Seems doable, though I don't speak C++ fluently

Thanks, it helps.

The topic title is maybe misleading though : I don't want to program for these boards. My goal would be closer to an emulator. So programming notes like Charles McDonald's genvdp, but for CPS-1/system16 (and I can add X68000) is closer to what I'm looking for.

I'm looking for documentation about programamtion on 68000 based arcade systems, especially Capcom CPS-1 or Sega System 16 (in particular gfx chips). Do you know where to find them ? I bet mame source code is one source, but where and what to read ? For the moment, I have that : https://patpend.net/...

Your ninja is almost the same colour as the background and it makes it difficult to spot.

But... awesome pixel art