Search found 81 matches

by eteream
Fri Mar 05, 2010 10:53 pm
Forum: Hardware
Topic: Gen cart pinout
Replies: 27
Views: 121202

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))
by eteream
Fri Mar 05, 2010 9:58 pm
Forum: Hardware
Topic: Gen cart pinout
Replies: 27
Views: 121202

!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...
by eteream
Wed Mar 03, 2010 4:59 pm
Forum: Hardware
Topic: Gen cart pinout
Replies: 27
Views: 121202

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...
by eteream
Mon Mar 01, 2010 1:53 am
Forum: Hardware
Topic: i have released my everdrive MD flashcart for SEGA
Replies: 17
Views: 37150

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

(to enjoy personal graphics, for example)
by eteream
Mon Mar 01, 2010 1:49 am
Forum: Hardware
Topic: Gen cart pinout
Replies: 27
Views: 121202

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...
by eteream
Sun Feb 28, 2010 2:09 am
Forum: Hardware
Topic: Gen cart pinout
Replies: 27
Views: 121202

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...
by eteream
Sat Feb 27, 2010 11:41 pm
Forum: Megadrive/Genesis
Topic: How I can count the FPS of my game?
Replies: 4
Views: 2369

Thanks guys! I will read it tomorrow, now i-m exhausted...
by eteream
Sat Feb 27, 2010 11:40 pm
Forum: Hardware
Topic: Gen cart pinout
Replies: 27
Views: 121202

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?
by eteream
Sat Feb 27, 2010 11:03 pm
Forum: Hardware
Topic: i have released my everdrive MD flashcart for SEGA
Replies: 17
Views: 37150

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

What about save state feature? Just kidding! But... is it possible?
by eteream
Fri Feb 26, 2010 8:06 pm
Forum: Megadrive/Genesis
Topic: IF everyone here Pooled ...
Replies: 11
Views: 2669

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.
by eteream
Fri Feb 26, 2010 7:55 pm
Forum: Megadrive/Genesis
Topic: How I can count the FPS of my game?
Replies: 4
Views: 2369

How I can count the FPS of my game?

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...
by eteream
Thu Feb 18, 2010 3:00 am
Forum: Megadrive/Genesis
Topic: IF everyone here Pooled ...
Replies: 11
Views: 2669

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...
by eteream
Sun Feb 14, 2010 9:23 pm
Forum: Megadrive/Genesis
Topic: Benefits between SMD and BIN Format
Replies: 5
Views: 2489

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.
by eteream
Sat Feb 13, 2010 3:52 pm
Forum: SGDK
Topic: Need a Tut with images for the Stef Dev Kit ...
Replies: 26
Views: 7054

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...
by eteream
Sat Feb 13, 2010 3:32 pm
Forum: Megadrive/Genesis
Topic: Benefits between SMD and BIN Format
Replies: 5
Views: 2489

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...