SnesPSP_TYL 0.2 is Out!

[Valiant]

opps double post XD.

[ataribob]

Mystic Ark
Is the only translated RPG that will not boot on any system ?

[jordo]

Hey guy's i live in Australia so i dont get my PSP for 5 days just wondering how does this emu compare to say Snes station on ps2 with speed sound and compatability

[ataribob]

ask that same question in 5 days when you get your PSP.
If it has the Firmware 1.50 or lower.
If's its higher than 1.50 you can forget the question on any emu for now.
Both snes emulators run great

[pkmusicmaker]

I was wondering if anyone else has been slightly dissapointed in the SNES emulators. My Genesis emulator (DGEN) seems to run much smoother. Does anyone know the reason for this? I always thought that Genesis and SNES were very similar systems. Anyway, if anyone knows some information on this subject, I'd appreciate it being cleared up.

[laxer3a]

Hi !!! My point may look biased because we release TYL but...

The megadrive graphic chipset IS 10x TIMES EASIER TO EMULATE !!!!
Try to find :

- Mosaic mode ? None on Megadrive.
- Mode 7 (2d matrix texture transform PER scanline) ? None on Megadrive
- Add/Sub blending per pixel ? None on megadrive
- 256 colors at the same time ? Not sure... I think it is 64 colors out of 32768.
(well does not impact emulation speed on psp but, may impact the way the emulator is done)
- 4 BG ? 1 or 2 BG on megadrive I believe...
- And finally the system of priority like a Z buffer ?
- Changes of register per scanline ? I dont even remember having seen color rasters on a megadrive :-)

http://www.nationmaster.com/encyclopedia/Sega-Genesis
(Bottom of the page)

Compared with this :
http://www.nationmaster.com/encyclopedia/Snes
(Bottom of the page)

If you read well between the line, the PERSCANLINE is very important.
It makes the complexity of the emu increase 10 fold !

Play a game like Axelay of even FF6 to see that it is clearly impossible for the megadrive to reach such graphical quality.

To be honnest, the megadrive hardware is childplay compare to the Snes hardware.

The only problem for megadrive emu then is the CPU.

Because in a Snes, the main cpu run between 1.7 and 3.7 Mhz if I am correct,
inside the megadrive it is a motorola 68000 and I believe the speed is 8Mhz
which may suck all your power for emulation.
In average a snes instruction takes around 5 cycles to execute.
Which means that the emulation has to emulate around 0.4 to 0.8 millions instruction per sec to have full speed.

In the 68000, instruction takes a little bit more cycle I believe but you have somehow 6x times more cycles to emulate.
Instruction decoding also may be a little bit harder than the Snes cpu (68hc816) opcodes.

On the audio side, I also believe that the FM chip is inferior to the one in the Snes.(from what I could remember playing both)
The snes has 8 voices with digital sampling, mixing and echo...

Hope this answers well, why the Snes emu is slow, and why the Megadrive emu should never be slow

[pkmusicmaker]

Thanks a lot, that was a much better response than I expected, I appreciate it. Keep up the good work guys!

[ganon]

SO is Y gonna be involved in the next release?

[laxer3a]

Learn to read between the lines on our site...

- Y will have access to the source code before anybody else (=the current version).
- If Y do modify the code, then it will be integrated in the emu and proper credit will be given.

Does that mean NEXT version ? Nope.
Does that mean that he WILL do it ? Nope.

It is funny to read the different boards and compare to what we said on our forum. Now I understand how stories are becoming legend. How lies are becoming truth and the opposite

[ganon]

So he has not obtained the source yet?