> Possible? Yes. Easy and cheap? Hell no. You'd need _at least_ a > programmable > IC, IC programmer, some breadboard and as many PS/2 and ADB ports as you > want to convert.
Easy? No, cheap... YES. You can take e.g. Atmel AT90-series microcontroller that is ISP programmable, so you can leave out that expensive programmer. Also you can use ponyprog or other similiar very cheap programmer to program other (like PIC-series) microcontrollers. > In short, you'd have to prototype your own converter. The IC is there to > convert the signal from PS/2 standard to ADB; this shouldn't be too > difficult as the only real difference is the keycodes and that Apple > keyboards send out a model ID number over the ADB bus. Actually, it's bit more complex thing. ADB device number negotiations etc. > All of this information should be available somewhere in the > Apple Knowledge > Base or on developer.apple.com Actually protocol is explained somewhere, but timings are only (?) in some big big book. Second thing is that ADB is patented/trademarked/copyrighted and not sure is it legal to build such a adapter (at least to publish it...) I personally have tought this because I rather would like to use my old repaired AT-keyboards and mices with my powerbook. If needed I can provide information I found about timings and protocol of ADB if someone want's to build such a little circuit. (Timing information that I found was in German, protocol can be found from some Apple document) ---------- Duo/2400 List, The friendliest place on the Net! A listserv for users and fans of Mac subportables. FAQ at <http://www.themacintoshguy.com/lists/DuoListFAQ.shtml> Be sure to visit Mac2400! <http://www.sineware.com/mac2400> To unsubscribe, E-mail to: <[EMAIL PROTECTED]> To switch to the DIGEST mode, E-mail to <[EMAIL PROTECTED]> Need help from a real person? Try. <[EMAIL PROTECTED]> ---------- Dr. Bott | 10/100 Ethernet for your 2400 is finally here! MPC-100 | <http://www.drbott.com/prod/mpc100.html> NineWire | If they are cool enough to host this list... Digital Solutions | ...you should check them out! http://www.NineWire.com/ Midwest Mac Parts ][ <http://www.midwestmac.com> After-market parts for Macs. ][ 888-356-1104 ][ MacResQ Specials: LaCie SCSI CDR From $99! PowerBook 3400/200 Only $879! Norton AntiVirus 6 Only $19! We Stock PARTS! <http://www.macresq.com>
