Apple 1js

What is this?

Apple 1js is an Apple 1 emulator written entirely in JavaScript and HTML5.

Updates

2013-06-25

• ACI Emulation

  Programs are now loaded via ACI emulation off of virtual tapes. This is slower than just slamming them into memory, faster than emulated typing. Actually loading programs from audio files is on my radar, but quite a bit more work.

2013-06-05

• More Accurater

  I've scraped the Internet for more information. For instance Cameron's Closet had some nice info on character display.

• Krusader off by default

  Krusader seems to cause some output weirdness outside of the Krusader shell, so I'm not using it by default anymore. Use #krusader to turn it back on.

2013-05-28

• Less Limited Input

  Pasting into the load window is now the same as typing. For now it is not any faster, though.

2013-05-27

• Krusader

  I've decided to use Krusader as the default ROM for now. I'm just starting to find my way around it, but other Apple 1 people might find it useful.

Requirements

• A Browser with HTML5 Support

  The most recent versions of Google Chrome, Safari, Firefox, and Opera all seem to work reasonably well these days, although variations in HTML5 support pop up, and occasionally a major release will move things around out from under me. IEs prior to 9 lacks canvas tag support and are unsupported. IE 9+ renders nicely on a modern machine.
  

• Basic Knowledge of the Apple 1

  If you don't know how to use an Apple 1, this won't be much fun for you. A good place to start is the Apple I Owners Club.

Known Limitations

• Limited Accuracy

  Unlike the Apple ][ I wrote an emulator for, I don't own an Apple 1. My emulation is based on all the reference materials I was able to dig up, and by comparison to the behavior of other emulators.

Acknowlegements

• I'm using the following libraries:

  • jQuery and jQuery UI
  • JSON 2
  • Base64 Utilities via KvZ

• I heavily referenced:

  • Apple I Owners Club and the applefritter forums.

• And special thanks to:

  • Mike for an eclectic collection of useful information. Someday I will work up the nerve to try building a replica.
  • And of course Woz, for launching my 30+ years of both silly and practical computer projects.

Contact

• apple1js@scullinsteel.com