gbadev.org forum archive

This is a read-only mirror of the content originally found on forum.gbadev.org (now offline), salvaged from Wayback machine copies. A new forum can be found here.

Beginners > emulator velocity %

#60424 - ghost Leinad - Thu Nov 10, 2005 3:50 am

what's the REAL velocity of your game/demo??? (using emulators)

for example: i use VBA, and the velocity in some games (some of my games) is faster than in no$gba..why's this???
_________________
All human wisdom is summed up in these two words, - 'Wait and hope"
****************************************
My site www.myth-world.net and www.bmrpg.com :)

#60436 - tepples - Thu Nov 10, 2005 6:31 am

In VisualBoyAdvance for Windows, try Options > Emulator > Show speed > Detailed to see if your PC can keep up with the emulated CPU and PPU. If you get something considerably below 100% (such as 88%), try increasing frameskip.
_________________
-- Where is he?
-- Who?
-- You know, the human.
-- I think he moved to Tilwick.

#60468 - ghost Leinad - Thu Nov 10, 2005 7:12 pm

yes, my percent is at 100 in VBA and in NO$GBA :D, but, is this the real velocity on hardware??? or the emulators changes his velocity depending on the computer...

i ask this because my games tested in VBA seems to run faster than games in NO$GBA.

i'd tested my games on another computers, and the velocity seems to be lower than mine...

i guess i found that out when i test my games on hardware :D
_________________
All human wisdom is summed up in these two words, - 'Wait and hope"
****************************************
My site www.myth-world.net and www.bmrpg.com :)

#60483 - tepples - Thu Nov 10, 2005 9:54 pm

If the game waits for vblank after every game loop, and it completes the game loop within 280896 cycles, then it should work at the same speed on hardware and all emulators.
_________________
-- Where is he?
-- Who?
-- You know, the human.
-- I think he moved to Tilwick.

#60492 - ScottLininger - Fri Nov 11, 2005 12:48 am

In my experience, certain things run slightly slower on VBA than on hardware. I have no idea why. My computer is certainly beefy enough to run at 100% speed.

Want you know your "real speed," why not test on hardware?

-Scott

#60593 - SittingDuck - Sat Nov 12, 2005 10:53 am

ScottLininger wrote:
Want you know your "real speed," why not test on hardware?

Yes, because that's the actual target platform.