MAMEWorld Christmas Tree Ice Skating Arcade Party Town >> EmuChat
Previous thread Previous  View all threads Index   Next thread Next   Flat Mode Flat  

stephh
Happy Bonze
Reged: 07/23/06
Posts: 368
Send PM
Re: why so many "Screen flipping in cocktail mode is not supported"?
09/21/10 08:12 PM


>> Some games do not support cocktail mode (and thus are flagged NO_COCKTAIL)

> I don't think that games that games that don't support this mode in the first place are flagged as NO_COCKTAIL.

You're right : when a game does NOT support cocktail mode while the hardware is supposed to do so (eg: some bootlegs on Galaxian hardware), there is a note in the driver, but no flag ...


> There must be something with cocktail mode that makes is specially hard or strange and thus not emulated in many cases, that's what I was curious about...

Beside RB's answer (screen flipping can be hard to emulate), another reason why games have this flag is because inputs are NOT mapped for player 2 ... Most of the time, the inputs are multiplexed on the same adress(es), and you need to add PORT_CUSTOM and some other tricky things to simulate what is done by the hardware ...

Steph from The Ultimate Patchers







Entire thread
Subject Posted by Posted on
* why so many "Screen flipping in cocktail mode is not supported"? franciscohs 09/21/10 01:48 AM
. * Re: why so many "Screen flipping in cocktail mode is not supported"? R. Belmont  09/21/10 03:07 PM
. * Re: why so many "Screen flipping in cocktail mode is not supported"? franciscohs  09/21/10 03:30 PM
. * Re: why so many "Screen flipping in cocktail mode is not supported"? Captain Pugwash  09/21/10 06:34 AM
. * Re: why so many "Screen flipping in cocktail mode is not supported"? franciscohs  09/21/10 02:31 PM
. * Re: why so many "Screen flipping in cocktail mode is not supported"? stephh  09/21/10 08:12 PM

Extra information Permissions
Moderator:  redk9258, URherenow, Tafoid 
0 registered and 36 anonymous users are browsing this forum.
You cannot start new topics
You cannot reply to topics
HTML is enabled
UBBCode is enabled
Thread views: 4332