jEnesisDS 0.7.4 - Genesis Emulator for Nintendo DS

[Flygon]

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!

The Mega Drive has a low resolution function that runs at 256*224, the DS runs at 256*192. Going by your confusing question you are asking why you can see the whole screen.

The answer is simply because that game probably runs with the "low-res" mode in order to run faster. 3D flight sims often abused this along with huge borders to get every last bit of lag gone... not that it really helped.

[ds benjmin]

I have a really good idea,isn't there a way for
games like sonic3&knuckles,with too big
of filesize to run,save a cache memory data
so it will not lag.

And how would sega cd lag so much
when ds games like zelda phantom
hourglass with a vsync disable code
goes faster than normal but like twice
fast?

[Flygon]

Sega CD emulation would lag severely because the Sega Cd being emulated along with the Mega Drive can actually be considered half the DS's power, in CPU power anyway. Obviously it would be near impossible to get full speed.

And about running sonic 3 and knuckles, it is already cached in the RAM, its just that the game takes up all the RAM, limiting emulator use.

The reason Phanton Hourglass would run so fast is because it is being told to not delay any of the speed as a simple way of saying this. Very similar results are findable using jEnesisDS by turning off VSync.

[ds benjmin]

I know,but is there a way to expand the RAM size so you can play games with bigger romsize?
also,because sonic cd is similar to the regular genesis series except for special stages,should it run a decent speed if
support was made for it

P.S. Jenesis DS runs at a very excellent speed at the current time,I think Sonic CD should run at least 45FPS.

P.S.S. A well-known sonic hack made by tweaker and team megamix of sonic retro called sonic megamix runs at full speed for the most:it has loads of features,huge levels,and currently 5 selectable characters,and even a special sound test!

[DanTheManMS]

ds benjmin, unless you have some coding experience yourself, I'd suggest staying away from the "such-and-such emulation should be easy!" comments. They don't help anything.

Sega CD emulation cannot be compared to a native DS game running. At all. The two things are entirely different. For instance, just because the DS can run Super Mario 64 DS doesn't mean it can emulate the N64 at any playable framerate.

[ds benjmin]

I just had expectation because sega cd isn't much
different than genesis. Also I still think it's possible
to make a secondary RAM by making a filetype for it. Even though it would take up some space in your sd card but I think it's worth it.

[spajdr]

well, there is always some hope, unless author says otherwise

[ds benjmin]

How about this,someone can make a special version of Jenesis DS with sega cd support only!

[ethd]

I just had expectation because sega cd isn't much
different than genesis.

You're missing the point ever so slightly. From what I understand, the Sega CD uses the Genesis's processors, too. And while jEnesisDS looks like it's making emulation of the Genesis easy, in reality, Lordus has had to optimize the code several times and make several hacky workarounds in order to ensure its speed. Adding another 68000 to the two processors already being emulated (the Z80 and the 68000) would be near impossible. (I say "near" because Lordus has impressed us all before.) Just look at the old jEnesisDS threads on DCEmu and you'll see that it's been hard getting up to this point.

How about this,someone can make a special version of Jenesis DS with sega cd support only!

I doubt that would help anything, because the Genesis still has to be emulated anyways. And "someone" would be Lordus, as jEnesisDS is closed source until/unless Lordus says otherwise.
I'm not trying to be a jerk, I'm just trying to inform you that your expectations may be a bit too high for the DS to handle.

[ds benjmin]

sorry ,by "someone" I meant Lordus.
But if each newer/excellent release it gets faster
which makes me think eventually,it will be able to run any sort of sega cd rom
or maybe even 32x roms.

And also,I hope in the eventual next release that
the savestate bug is fixed cuz when you load a save-state,it is missing some sound that I think is caused by it overlooking some of the sound channels,
and that there could be screensize options with,widescreen,fullscreen,screen scaling,and screen-size select.