mikey@ernie.Berkeley.EDU (Michael Yang) (09/28/88)
I had a weird problem with my Mac SE just now. Everything was fine until suddenly, spurious characters would be generated with each keypress. In Versaterm, S's would appear between keystrokes. In an editor, it would be *'s. I unplugged the cable from my keyboard and a continuous stream of *'s would appear, and this would continue even if I unplugged the cable altogether. After plugging the cable in and out a few times, trying different ADB ports, the problem went away. Phew. Anyone know what might have caused this? Is there something wrong with my Mac? Inquiring minds want to know... ---------------------------------------------------------------- Mike Yang mikey@ernie.berkeley.edu ---------------------------------------------------------------- Mike Yang | email: mikey@polya.stanford.edu Stanford/Berkeley transition | mikey@score.stanford.edu (Thor says "hi") | summer only: mikey@decwrl.dec.com
mikey@ernie.Berkeley.EDU (Michael Yang) (09/29/88)
I had a weird problem with my Mac SE just now. Everything was fine until suddenly, spurious characters would be generated with each keypress. In Versaterm, S's would appear between keystrokes. In an editor, it would be *'s. I unplugged the cable from my keyboard and a continuous stream of *'s would appear, and this would continue even if I unplugged the cable altogether. After plugging the cable in and out a few times, trying different ADB ports, the problem went away. Phew. Anyone know what might have caused this? Is there something wrong with my Mac? Inquiring minds want to know... ---------------------------------------------------------------- Mike Yang mikey@ernie.berkeley.edu UC Berkeley Thor says "hi" ----------------------------------------------------------------
gillies@p.cs.uiuc.edu (10/01/88)
I am suprised your keyboard works at all. You see, the keyboard and
mouse both have small CPUs in them, with registers, and when you
unplug these devices you reset all the registers (some of which have
been programmed by the Mac SE when the machine was booted).
So in general, don't expect your ADB devices to work if you unplug
them after the SE/II has booted up.
Don Gillies, Dept. of Computer Science, University of Illinois
1304 W. Springfield, Urbana, Ill 61801
ARPA: gillies@cs.uiuc.edu UUCP: {uunet,ihnp4,harvard}!uiucdcs!gillies