SpritesMind.Net

Yeah... it depends on the speed at which circuitry stabilizes, and you have to deal with a23 or !CE0 too.

But I think is much better the first approach (ignoring !CE0) than the bank-switch method, because it-s simpler.
(From what I can see now it needs no extra chip (in the worst case only one))

!CARTIN is an input to the address decode logic from the cartridge port, not an output to be used by the cartridge. It's how the system senses that a game cartridge is plugged in as opposed to something like the BRAM cart. It's not useful for making a big 8MB cart, but you can do that just by imple...

Sorry, I missundertod your earlier messages (I read somewhere extension port only can access a miserable amount of KB... (????)). It's a hardware restriction in the sense that the address decoding logic limits a cartridge to the first 4MB of the address space. You can implement your own address deco...

KRIKzz, is possible to replace the OS (boot, menu, etc...) with custom one?

(to enjoy personal graphics, for example)

ok, so the 4MB rom space is a sega restriction, not a hardware restriction (expansion policies, if you let me say so). Then a 8MB cartridge can exist, but it will not be compatible with 32X.

... so all games are mirrored into the 4-8MB space at less... uhmm... forget it, I said nothing...

One related question (if this is totally off topic, tell me and I will delete it): Since cart pin out has from A01 to A23, it can address 8 Megabytes. Well this is true? The upper 4MB are Sega restricted, but not hardware restricted? Or I-m missing something? You're missing A0. The 68000 bus is a W...

Thanks guys! I will read it tomorrow, now i-m exhausted...

One related question (if this is totally off topic, tell me and I will delete it):

Since cart pin out has from A01 to A23, it can address 8 Megabytes. Well this is true? The upper 4MB are Sega restricted, but not hardware restricted? Or I-m missing something?

lovely!
I need one of those. You have an email.

What about save state feature? Just kidding! But... is it possible?

Alex, what about a level designer who do all this work?

No seriously, in every aspect of this life, if you want to lead a project you have to put yourself first; with that work as a proof, convince other people.

Well, just that! I'm thinking to use a frame counter on screen & do an average for a minute. There is a more easy way? There is an emulator which can tell me that? I'm using C, and I can use asm with no problem; and of course I can download any free software or doing whatever necessary. A note for o...

As other said making a game is something more than be a good programmer. In any case, what we need most are graphic and audio artists, but who can work with what the Genny can do: FM sound and tiny graphics. That's my work so far (bin & code): http://cid-60b939ad111c4746.skydrive.live.com/browse.asp...

LocalH wrote: Not always. Sometimes such ROMs are actually SMD format (which can be confirmed by attempting to use them as BIN files, or by loading them in a hex editor).

It's true. I wanted to say most of the time.

http://gendev.spritesmind.net/forum/viewtopic.php?p=2718 To find it fast, look for: "I integrated the mini dev kit in Code::Block IDE. " Well, if you can-t see images, ask kindly to Stef. By the way, do you really need an IDE? I can-t believe that a genesis program has enough code to be necessary. Y...

SMD was a copier file format used by Super Magic Driver copier. http://info.sonicretro.org/Super_Magic_Drive http://info.sonicretro.org/SMD Although you can find a lot of roms named *.smd, they are really in bin format renamed to *.smd extension. There are no major differences, it's about how the da...