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Cheat options (overclock) from command line (adding to derivative)
Tiger-Heli:
--- Quote from: Howard_Casto on April 13, 2004, 03:45:58 pm ---Take Crusin Usa for example:
During the bootup sequence it checks the processor speed.... if it isn't correct it reboots the cpu and keeps doing it until the reading is correct.
It appears to be the same with all harddrive games with the "computer like" bootup screen.
--- End quote ---
Actually, Cruisin' USA isn't a harddrive game, it just acts like one. FWIW!
Howard_Casto:
ssf wouldn't do any good.... ssf doesn't actually skip frames, it skips the rendering of frames. So the check would still take place. A delay would be a waste of time as the only games you would use this on would be games that don't run full-speed. So how long of a delay?
Tiger-Heli:
--- Quote from: Howard_Casto on April 14, 2004, 03:21:51 pm ---ssf wouldn't do any good.... ssf doesn't actually skip frames, it skips the rendering of frames. So the check would still take place. A delay would be a waste of time as the only games you would use this on would be games that don't run full-speed. So how long of a delay?
--- End quote ---
Okay, -ssf wouldn't speed anything up, but - we know the check for processor speed occurs when the computer board is visible, before the initial graphics start.
And from -ssf, I know that between -700 and -725, I am past this screen and into the main program. And this value should be the same regardless whether I'm running a 3.0 Ghz P4 or and Pentium 66, so . . .
what if we passed the underclock percentage, and a delay (in frames) before o/c, like this (it would still take a long time to load, but be fairly playable after that . . .)
crusnusa.ini
o/c_delay 725
cpu0
Tiger-Heli:
Additional idea - I saw in the http://www.arcadecontrols.org/yabbse/index.php?board=1;action=display;threadid=18209;start=new Extra buttons thread Reply #18 that PatickL is pressing F10 to turn speed throttling off during boot-up and back on again. This would be similar to the DECO cassette turbo load option in NoNameMAME.
Idea - how hard would it be to specify a -unthrottle_strartup_frames (-usf) command that could be added to the gamename.ini file as
-usf 725
With the command above, MAME would turn speed throttling off for the specified number of frames (725) and then back on again.
Theoretically, you could use all the new features together -
crusnusa.ini
o/c_delay
Howard_Casto:
I still think it's a good idea, but I still think it's a butt-load of work and I doubt anyone would be willing to invest the time in it.