PSP emulating Dreamcast? HOW IS THAT POSSIBLE??

[xaeroxcore]

Hello everyone, searching the net, i´ve seen that 1 year ago the project for briging NullDC to PSP was released to the public. I remember many years ago some YouTube videos of somebody emulating DC home menu, Power Stone and even Shenmue on DC, obviously very flawed, lots of glithes and tecnically unplayable....But damn, RUNNING ON FREAKING PSP, which is supossed to be sort of similar in graphical power to DC. Look for yourself: https://youtu.be/skUS7UI5OGU

I always thought it was a hoax, but...

Turns out, that "somebody" is known as drk||Raziel and released the NullDC for PSP made by him and others last year, 13 years later. See it: https://archive.org/details/nullDC-PSP

And there are various recent videos of different users testing it, see https://youtu.be/vTpIax8PUY4

My question is....How on earth is this possible?

Yes, i know PSP is 6 years newer than DC, so it can be more powerful, but we have seen what both systems can do, and yes, PSP has more complex and demanding games than anything on the same genre on DC like Midnight Club 3, GTA Vice and Liberty City Stories, but also DC has games with higher polycounts than games from the same genre on PSP, like Shenmue or DOA 2.... see it for yourself on this thread https://forum.beyond3d.com/threads/yes- ... 1/page-107

And yes, PSP has 64 MB RAM from 2001 models and beyond (Null DC PSP doesnt work on 1000 Model, which has 32 MB) vs 16 on DC, and also looks like overall PSP sports more geometry and is capable to display more advanced post processing effects out of the box than DC....but DC has more VRAM and it displays the games on higher native resolution than PSP... So how can it be? anyone has a clue? For emulating a system, your machine has to be at least 10 times more powerful than the system emulated...So PSP is at least equivalent to 5 times DC power (cause emulation is far from perfect and i highly doubt it would ever be) for emulating slowly and glitched DC games?
Even Vita struggles to emulate perfect some DC games...so...i dont understand...
and also, PSP dreamcast ports, like Power Stone and Crazy Taxy misses detail on textures and other stuff...so hooow?

So, is this turns out to be real is PSP more powerful than PS2 then?
Otherwise, +20 years ago Sony was right and PS2 was almost a gen ahead from out beloved DC in graphical power?
Is our machine a buffed system 32/64 bit console and not a real "128 bits system"?
So DC potential was really untapped?
Or this is just a technical miracle made by some skilled dude?

[Ian Micheal]

Or this is just a technical miracle made by some skilled dude? Yes and it's not like it's anywhere near use-able it's a tech demo try a demanding dc game on it.. You pretty much point it out your self.. I dont see why this is so shocking.. Any demanding 3d game will make it chug even worst..

Here is my updated build of the n64 emulator doing the same thing yes it's useless but it's emulation of system that is even more powerful .. Do the math 90mhz cpu on 200mhz dc..

This is also using more ram then the dc has this is mmu virtual page space ..
Banjo on dc at 3 fps But using more ram then the system has.. NO it's not fake
it load any size rom at all..

[Gabbyjay]

Otherwise, +20 years ago Sony was right and PS2 was almost a gen ahead from out beloved DC in graphical power?

lol no way. A bit more powerful than DC for sure, but nowhere near a generation.

I have not looked into that emulator, but I could imagine it's HLE.

[Ian Micheal]

Otherwise, +20 years ago Sony was right and PS2 was almost a gen ahead from out beloved DC in graphical power?

lol no way. A bit more powerful than DC for sure, but nowhere near a generation.

I have not looked into that emulator, but I could imagine it's HLE.

Yeah None of the DC emulators fully emulate the hardware even on pc.. This dont run even 15fps so i dont know what it proves to anyone ..

[Anthony817]

That was made by my friend back in the day. Most people knew him as Atreyu187 though back in the tiz days. He also made a PS3 emu port proof of concept.

https://youtu.be/-YCA9N_OVxo

How is it possible? It is because it is clearly a tech demo. It runs so poorly it would never run playable speeds. It was just to show off his coding skills. No more impressive than the Saturn or N64 emulators on Dreamcast that also run at less than 5 fps. I would argue that Bleem is much more impressive as it is running PSX games at playable speeds on a Dreamcast. Any coder worth their salt could achieve the same, but what is the point other than for a PoC tech demo?

[xaeroxcore]

I totally get nulldc for PSP is a proof of concept, probably will never be playable but the examples you guys are using are from systems one generation ahead from each other at a techinical level. DC is one gen ahead from N64. PS3 is one gen ahead from DC....

PSP and DC are supossed to be systems on the same league and both sports similar geometry numbers and texture quality on most of its games....This is something like New 3DS emulating Gamecube or PS2....Or i dont know, steam deck emulating Xbox Series S....How can it be? Only rational explanation is PSP sports more power under the hood tan PS2, but probably due to power efficiency never showed what was capable of, cuz probably games would eat the battery fast....

[Ian Micheal]

I totally get nulldc for PSP is a proof of concept, probably will never be playable but the examples you guys are using are from systems one generation ahead from each other at a techinical level. DC is one gen ahead from N64. PS3 is one gen ahead from DC....

PSP and DC are supossed to be systems on the same league and both sports similar geometry numbers and texture quality and most of its games....This is something like New 3DS emulating Gamecube or PS2....Or i dont know, steam deck emulating Xbox Series S....How can it be? Only rational explanation is PSP sports more power under the hood tan PS2, but probably due to power efficiency never showed what was capable of, cuz probably games would eat the battery fast....

Are you forgeting the low res of the psp screen ? it's not that powerful not even as much as ps2 Do we have to post the models from games from psp there about the same as the DC sometimes less poly's

This not full emulation of a DC in any way not something new could do ps2 emulator on dc it be just as useless

[Ian Micheal]

I totally get nulldc for PSP is a proof of concept, probably will never be playable but the examples you guys are using are from systems one generation ahead from each other at a techinical level. DC is one gen ahead from N64. PS3 is one gen ahead from DC....

PSP and DC are supossed to be systems on the same league and both sports similar geometry numbers and texture quality on most of its games....This is something like New 3DS emulating Gamecube or PS2....Or i dont know, steam deck emulating Xbox Series S....How can it be? Only rational explanation is PSP sports more power under the hood tan PS2, but probably due to power efficiency never showed what was capable of, cuz probably games would eat the battery fast....

I know the coder that did this his name is skmp:
dan also did skmp was mentioning, you can find it on the archives of dcdev's old site
Dcemulator on dreamcast so dreamcast emulation of a dreamcast on dreamcast..

whats that prove ?

it's right here https://github.com/skmp/nulldce
first ever video

On wii

on wii


Silly thing was thinking this is fake the src code was around you could build it your self..

Can emulate almost any thing on anything dont mean it's use-able.. I guess you missed the fact i was loading 32mb rom on dreamcast with 16mb of ram..

[Dakangel]

Here is my updated build of the n64 emulator doing the same thing yes it's useless but it's emulation of system that is even more powerful .. Do the math 90mhz cpu on 200mhz dc..

This is also using more ram then the dc has this is mmu virtual page space ..

Your daedalus version can run Castlevania 64 ,when even the psp and wii version hangs, crash and doestn open that game.

Why dont you share your source build with the current daedalus developers,your additions are gold and they want to make a unique structure for all the ports.