Date: Wed, 6 Sep 2000 08:21:47 -0400
From: "Jubal Harshaw" <[EMAIL PROTECTED]>
Subject: Re: SNES emulator on Lib
Do you have any specifics on the parallel-controller adapter you built? I'm
running an emulator on my 110CT but hate the keyboard controls.
----- Original Message -----
From: "�TechnoDragon�" <[EMAIL PROTECTED]>
To: "Libretto" <[EMAIL PROTECTED]>
Sent: Saturday, September 02, 2000 2:15 PM
Subject: Re: SNES emulator on Lib
> Date: Sat, 02 Sep 2000 11:08:54 -0700
> From: =?iso-8859-1?Q?=B7TechnoDragon=B7?= <[EMAIL PROTECTED]>
> Subject: Re: SNES emulator on Lib
>
>
> >Anyone use an SNES emulator on their Lib? Is your video and audio
> >performance poor. If not, which emulator are you using?
>
> Boy, you sure came to the right person. I just happen to play snes
> all of the time on my libretto on long business trips. I even made a
> parallel port to snes controller adapter so that I can have a better input
> device than the keyboard.
> Ok, in order to have an 80x86 processor emulate a snes, it has to
> create a virtual motorola 68000 processor. Even though the origional snes
> ran at like 4mhz or so, you'll need at least a 200mhz in order to get
> decent emulation.
> My libretto 70ct is a 133mhz, and it kinda sucks, but it's better
> than nothing. If you're running it on a 60ct or 50ct, I pity you. :)
> To speed it up, try turning off sound emulation. Because the
emulator
> is not trying to emulate sound anymore, it has more cpu cycles dedicated
to
> emulating the graphics. You may notice the improvement, you may not, but
> its there.
> Another thing to do is run it truly from DOS. Not a dos prompt in
> windows, but a true start the computer when pressing F8 or something and
> not even load windows and go straight to the dos prompt type dos prompt.
> Without the windows overhead, you'll have way more ram and it'll run
faster.
> Sound will indeed suck. A tiny mono speaker in the libretto that's
> less than 1" in diameter is not the best source for sound. I perfer
> fingernails running down a chalkboard to hearing that speaker.
> If you must use sound, use headphones or external speakers. That
> alone will improve the quality one hell of a lot.
> When it emulates sound, you can choose what rate the emulation is at
> that's fed to the sound device. The default is usually 22050hz in mono. In
> the settings this can be changed to a nicer, higher rate, like 44100hz in
> stereo.
> (please note that sound support is a pain in the ass under a pure
dos
> boot, so you may not even have dos sound abilities except for under
> windows. also, some games require sound in order for their internal timing
> to work, turning off sound emulatuion may cause a few games to lock at
> certain points)
> Usually there's an automatic frame skip. The emulator will
> automatically skip frames on slow systems in order to keep the game
running
> in real time. I choose to switch this off.
> You'll notice that the game will now be running in slow motion. This
> can be remedied to manually turn up the frame skip. Auto frame skip will
> skip more frames than a manual one, because of the calculations to see if
> it needs to skip or not.
> If you turn up the frame skip too high, you'll get a super fast
game.
> Great for if a game is no longer a challenge to you. :)
> Finally, try to get a vesa2 mode to work for the emulator under dos,
> or run it in 16bpp or 24bpp graphics mode under windows for a windows
> emulator. This'll let the game now use effects such as transparency and
> faster graphics drawing modes.
>
> The emulator I use is called ZSNES. ( http://www.zsnes.com ) ZSNES
> rocks over other emulators because it is written completely in assembly
> language. This means that it's as fast of an emulator as one can get.
> Better than pretty much any other emulator I've seen.
> It's pretty simple to get working, but you'll find that it indeed
> does work the best for emulation of snes under the libretto's limited
> resources.
>
> After writing this email, I just checked out the site, it looks like
> they have a windows version. Humm, that might work almost as good as the
> dos version. But it is in beta though and I couldn't get it to work on my
> desktop system.
>
>
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