JSNES

As time progresses, canvas applications are becoming more and more impressive. Ben Firshman has written a rather impressive JavaScript NES emulator.

Rather than rewriting the game in JavaScript, JSNES emulates and reads the encoded ROMs displaying the screen within a canvas element.

Ben comments:

I got underway shamelessly porting vNES into Javascript. Although not the most efficient, it didn’t have any of the pointer memory mapping magic associated with emulators written in lower level languages. As such, it was more or less a direct port, bar a few tweaks to compensate for the lack of static typing, and obviously a rewrite of all the I/O.

A selection of the titles demoed.

A selection of the titles demoed.

As everything is happening in JavaScript, JSNES eats a lot of resource so it’s best to try in Chrome.

Please ensure you follow the relevant laws regarding ROMs for your country before trying this demo.

Play JSNES

Info

Type:
Emulators, Games
Author:
Ben Firshman
Posted on:
October 14th, 2009
Posted by:
Andi Smith
Views:
10973

Rating

4.77

Your Rating:
1 Star2 Stars3 Stars4 Stars5 Stars

Works on

BETA Please let us know if you find JSNES works in other browsers by leaving a comment below.

Comments

Levi Aho

The fact that this works is utterly mindblowing. Of course, at about 4fps, iitit’s pretty unusable, but still, wow!

Posted on February 25, 2010

slam

Miercole, que bien eso si me gusto mucho

Posted on February 28, 2010

pwnsause

wait so is this in HTML 5, cause if it is, then wow.

Posted on April 5, 2010

CodexDraco

Amazing! Just amazing!

Posted on April 27, 2010

knx

@Levi Aho: this is actually perfectly playable on Chrome (about 60 fps on my 4-year old laptop)

Posted on June 3, 2010

fr0

Amazing. Works great without sound on Chrome 5.0.375.55 beta (Xubuntu Karmic). Enabling sound makes it much slower.

Posted on June 4, 2010

Fox

really impressive, also you can add Opera to the list, runs @ 60fps here.

Posted on June 5, 2010

Martin

Works well in Safari 5.0 without sound, 55fps

Posted on June 12, 2010

Pierre Rudloff

Works (with a terrible FPS) with 3.0, wow !

Posted on August 8, 2010

SWFlash

Aww, I wanna JSSNES!

Posted on August 28, 2010

GottZ

works fluitly for me in chrome
running on an intel centrino mobile with 1.7 ghz as singlecore.

Posted on January 19, 2011

Somebody

Dude, are you kidding with the HTML5 comment? This is Canvas, not HTML5… HTML5 is only a definition set for new HTML tags and attributes .
And ANYTHING you see on the web that is interactive has almost nothing to do with the ‘HTML’. Most likely it is javascript/yourbrowser doing the work…

Posted on May 1, 2011

Somebody else

@Somebody
Are you kidding me with the comment about the comment about HTML5?
canvas is part of HTML5… so yeah, you’re half right, but so was pwnsause

Posted on May 7, 2011

Nobody

@Somebody else
If you look at the HTML source of the game page, you’ll find that it does in fact not use HTML 5. Canvas is included in HTML 5, but it is also available independently of it. So Somebody is right in saying that this has very little to do with HTML at all.

Posted on July 28, 2011

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