why do you need to press all the cursor keys simultaniously?, i would have thought 3 keys at the same time would suffice!
(just like a PC, all i ever use is Ctrl, ALT, Del!) Dean > -----Original Message----- > From: Andrew Gale [SMTP:[EMAIL PROTECTED] > Sent: Friday, October 12, 2001 9:55 AM > To: [email protected] > Subject: Re: Questions, questions.... > > > Keyboards, is someone working on a interface-thingie so that you can > hook > up > > a PC-keyboard to your Sam? If so what is the status about it. > > I've had one working for quite a long time now > (see www.ee.surrey.ac.uk/Personal/A.Gale/sam/ ) but sadly > the central chip isn't easy to obtain anymore. Also, there > wasn't really much interest in it, possibly because it required > soldering inside the SAM. > > If there is sufficient interest then I may pick it up again in > the new year. I was thinking about a design that used more easily > available chips, and the biggest design decision is "how many > keys can be pressed simultaneously" ? The simplest design I'm > thinking of would allow any or all of the cursor keys, ctrl, shift, > and symbol shift to be pressed simultaneously, plus any one other > key. This would use approximately 13 chips for an internal > version, and 20 for an external version. To add another key (any) > would require another 6 chips per key.... the PCB would be getting > quite hairy with > 1 'any' key, though. > > Andy
