jEnesisDS 0.7.4 - Genesis Emulator for Nintendo DS

[dm1983]

Is there any way to change the screen settings so that the whole screen fits in? At the moment part of each side is missing.

[Spidery_Yoda]

Is there any way to change the screen settings so that the whole screen fits in? At the moment part of each side is missing.

Please read the thread next time. You'll find the answer you're looking for without us having to repost it over and over again.

It's horizontal scaling that is needed for the screen to fit, and this is why it can't happen. Ever:

I'm trying to relax now, when i hear the scaling question for the 100th time, but it's not always easy
No, the screen can't be scaled like NeoDS does it. If I could do that, then I can tell you that I would, instead of having stupid workarounds like panning and the follow d-pad option.
The NeoGeo composes it's screen almost entirely out of sprites, that NeoDS renders in 3D. With 3D it's relatively easy to scale the whole thing.
The Genesis has 2 background layers and 1 sprite layer, each of which can have high or low priorities (selectable on a per tile basis). So effectively the screen can be composed out of 6 layers. To do this with the DS hardware i need all the 4 backgrounds it offers. Just 2 of those backgrounds can be scaled in hardware, and software scaling is out of the question.
The other alternative is software rendering, where you compose a bitmap out of all Genesis layers, which you can then draw on a single DS background and scale it in hardware.
The downside of this is, that it is incredibly slow. I can tell you, that a typical PC Genesis emulator probably spends about 50% of all its time in software rendering. That's a more than the emulation of the 2 CPUs takes (except the CPU cores are very unoptimized).

[ds benjmin]

I decided to release a little update, although most of the things I wanted to do for the next version are not done yet. jEnesisDS 0.7.4 has no new features, but I think it's still worth the update, as the speed is improved by up to 30% and the sound is substantially better, too, in my opinion

Changelog:
********
v0.7.4 *
********
- Changed scheduling of M68000 and Z80.
- Some changes in M68000 internal memory handlers.
- YM2612 FM core mostly rewritten in ASM.
- Some bugs in FM core fixed (Operator 1 was sometimes not considered in certain cases).
- Fixed reset bug for FM core resulting in unstable sound for every game loaded except the 1st one.
- Raised sample rate for FM emulation from 16KHz to 28KHz (28, because a few games can't do 32KHz)
- Sound is completely mixed in hardware now, meaning every FM channel, PSG and DAC have their own DS sound channels.


Download Here and Give feedback & Compatability Reports Via Comments

:thumbup: I love it!!!!! 2 thumbs up
I hope when you make a new release that you can make support for stuff like:
gamegenie&pro action replay,and make sound quality selections in the configuration. EDIT:I also hope the next release includes the savestate sound bug being fixed.

[xneoken]

The screen scrolling idea is ingenius! Perfect for side scrolling games like Sonic. Is a rewind function possible?

[zondajag]

The screen scrolling idea is ingenius! Perfect for side scrolling games like Sonic. Is a rewind function possible?

rewind function? thats madness!

[puslar_t]

Okay if anyone tried Maximum Carnage he or she would notice a full-scale screen running at normal speed and using the newest audio engine! Is the game running in a natively lower res to accommodate the cartoon sprites or does it run in hardware scaling mode? One could hope Lordus has been experimenting with new methods in this build since I don't think full-scale is included any longer!

[ds benjmin]

I decided to release a little update, although most of the things I wanted to do for the next version are not done yet. jEnesisDS 0.7.4 has no new features, but I think it's still worth the update, as the speed is improved by up to 30% and the sound is substantially better, too, in my opinion

Changelog:
********
v0.7.4 *
********
- Changed scheduling of M68000 and Z80.
- Some changes in M68000 internal memory handlers.
- YM2612 FM core mostly rewritten in ASM.
- Some bugs in FM core fixed (Operator 1 was sometimes not considered in certain cases).
- Fixed reset bug for FM core resulting in unstable sound for every game loaded except the 1st one.
- Raised sample rate for FM emulation from 16KHz to 28KHz (28, because a few games can't do 32KHz)
- Sound is completely mixed in hardware now, meaning every FM channel, PSG and DAC have their own DS sound channels.


Download Here and Give feedback & Compatability Reports Via Comments

can you,in your next release,implement
sega cd support and fix the genesis romsize limit for sonic3&knuckles will work.

P.S. sonic3&knuckles does'nt work because
the filesize. sorry bout the text size

EDIT:I hope also that there is a way to fix checksum bugs for some roms like the newer version of sonic megamix,a famous/legendary romhack,won't even run with its original checksum or autofix,just shows red screen. It works fine with
gens+ on my computer.

Oh,and what is casino cash
<-
supposed to be for?

[ethd]

can you,in your next release,implement
sega cd support and fix the genesis romsize limit for sonic3&knuckles will work.

P.S. sonic3&knuckles does'nt work because
the filesize.

You might consider making your fonts smaller. I think Lordus can read
From what I understand, the SEGA CD adds a more powerful 68000 processor to the Genesis's 68000, which is already being emulated. With how much CPU time jEnesisDS is taking already, Lordus would have to super-optimize the code, and even then, on the DS's limited hardware, you'd be lucky to get a playable framerate.
He's already said he's working on a paging system to load big ROMs. For now, why don't you try Sonic 3 and Sonic & Knuckles alone? You've got practically the same game... just minus a few features.
Here's the tl;dr: SEGA CD, probably not next release or even EVER. Big ROM support: probably jEnesisDS 0.8.

Oh, and thanks for the emulator, Lordus. It rocks on my EDGE, and while I have to take a few workarounds to get it to work on my Games n' Music, that's not too much of a problem. It looks great, it sounds great, and it's fast. I can play Dune on the go now

[ds benjmin]

I just wanted to textingly be heard,and I did try them alone but wish to have them together for debug mode.

[Spidery_Yoda]

Sonic 3 and Knuckles doesn't work because the DS simply doesn't have enough RAM to load the larger filesize.

Its a shame because I think the 2 together are the best game on the system.

But yeah Lordus is indirectly working on it apparently.