Retrocopy Megadrive reset Error

Type: Member
Posts: 297
Joined: 3/11/2011

Hello RetroRalph, i'm really sorry for open another post for errors of Megadrive, but this is a different error:

I found a bug in Retrocopy in the game X-men:
At one stage, you have to reset the Sega Genesis in order to move to another stage but I try to do the same in retrocopy and does not work.

This is a video of the game played on a real Sega Genesis :

Link: http://www.mediafire.com/?1bo9emfr5tlleqn

And this is a video of the game played on Retrocopy (the same stage):

Link: http://www.mediafire.com/?3xq82y9x51n5a33

From 0:54 to 1:12. I press reset on the sega genesis and that happens,and then you can play the next Stage.
But this does not work in Retrocopy, therefore, the Reset feature in Retrocopy must be equal to reset feature of a real Sega Genesis to be able to play the next stage of Xmen in Retrocopy.

Edited 2 times. Last edit by Pepodmc

micky

Type: Member
Posts: 148
Joined: 12/12/2009

Hello Ralf,

I would be interested to know if retrocopy emulates or will emulate the vdp slot access to vram like the real genesis :
http://gendev.spritesmind.net/forum/viewtopic.php?t=851

I know that the emulation isn't accurate now because of the bug in mickey mania but to emulate it properly you have to change the way the vdp is emulated or it's just a adjustement?

Thanks.

Pepodmc

Type: Member
Posts: 297
Joined: 3/11/2011

RetroRalph please,download this video in which the angry Nintendo Nerd talks about xmen of sega genesis and you will understand the problem better (Megadrive´s reset):

LINK (only 15 MB): http://www.mediafire.com/?lbv515butob5opr

Edited 5 times. Last edit by Pepodmc

Pepodmc

Type: Member
Posts: 297
Joined: 3/11/2011

micky wrote:

Hello Ralf,

I would be interested to know if retrocopy emulates or will emulate the vdp slot access to vram like the real genesis :
http://gendev.spritesmind.net/forum/viewtopic.php?t=851

I know that the emulation isn't accurate now because of the bug in mickey mania but to emulate it properly you have to change the way the vdp is emulated or it's just a adjustement?

Thanks.

The requirements of that emulator looks like a Joke (core 2 Quad for sega Genesis emulation :lol:

)

Edited 3 times. Last edit by Pepodmc

Sasha

Type: Beta Tester
Posts: 318
Joined: 2/19/2010

Don't worry Pepodmc we can handle it easily.

I have Phenom II x4 at 3600Mhz, accuracy most important part for me.

I have good idea about Accuracy!

Here two profiles:

Cycle Accurate - Requires overclocked CPU's.
Performance - Requires CPU's with 2 cores.

Edited 2 times. Last edit by Sasha

Pepodmc

Type: Member
Posts: 297
Joined: 3/11/2011

Sasha wrote:

Don't worry Pepodmc we can handle it easily.

I have Phenom II x4 at 3600Mhz, accuracy most important part for me. ;)

You are right :lol:

Edited 1 times. Last edit by Pepodmc

Sasha

Type: Beta Tester
Posts: 318
Joined: 2/19/2010

It must be not so hard, if BSNES 0.77 x64 (Profile: Cycle Accurate) run fine for me (all games with good speed 67~102fps)...

Pepodmc

Type: Member
Posts: 297
Joined: 3/11/2011

But really , Bsnes has a bad optimization and some sync audio problems (in my PC BSNES runs well , but it has high requirements for be a SNES emulator).
I mean, accuracy is a good thing, but optimization TOO !!

RetroRalph

Type: Administrator
Posts: 1336
Joined: 7/19/2009

RetroCopy does emulate memory accurately. However there is a caveat, with the sprite engine I didn't know the timings or have time to find them so they are inaccurate. The design of the Megadrive VDP in RetroCopy is such that it can be used accurately when the timing information was available which it is now. So it's just a matter of plugging it in.

Pepodmc

Type: Member
Posts: 297
Joined: 3/11/2011

RetroRalph , can you fix the Reset issue of Retrocopy?

Pepodmc

Type: Member
Posts: 297
Joined: 3/11/2011

Sasha wrote:

I have good idea about Accuracy!

Here two profiles:

Cycle Accurate - Requires overclocked CPU's.
Performance - Requires CPU's with 2 cores.

Great idea !!!

Edited 1 times. Last edit by Pepodmc

RetroRalph

Type: Administrator
Posts: 1336
Joined: 7/19/2009

To answer the original post. The RESET you can currently do isn't the same as the reset button on the console, it's more like a power on-power off. That reset button will need to be added at some stage.

Pepodmc

Type: Member
Posts: 297
Joined: 3/11/2011

OK!!!
Thanks for answer and I hope that you will add the reset feature to Retrocopy one day !!!

micky

Type: Member
Posts: 148
Joined: 12/12/2009

[quote=Pepodmc]

micky wrote:

Hello Ralf,

I would be interested to know if retrocopy emulates or will emulate the vdp slot access to vram like the real genesis :
http://gendev.spritesmind.net/forum/viewtopic.php?t=851

I know that the emulation isn't accurate now because of the bug in mickey mania but to emulate it properly you have to change the way the vdp is emulated or it's just a adjustement?

Thanks.

The requirements of that emulator looks like a Joke (core 2 Quad for sega Genesis emulation :lol:

)[/quote]

I'm not surprised by this requirements because Nemesis the author try to do a emulator at cycle level.

Pepodmc

Type: Member
Posts: 297
Joined: 3/11/2011