boegehol@informatik.uni-stuttgart.de (Harald Boegeholz) (02/07/91)
In article <8976@star.cs.vu.nl> of comp.sys.ibm.ps2.hardware, mabdoor@cs.vu.nl (Doorn van MAB) writes: > I have a strange question about my IBM PS/2 Model 50Z. > > When I boot with MS-DOS, I get my normal prompt, but there also appears an > extra character. ... > I have to press Backspace to erase the character. Then I have no problem, my > system works fine. ... > NOTE2: It's not MS-DOS-s fault. The character also appears when I boot > MINIX (a unix version), or the OS/2 DOS-box. I got the same problem. Since it is not a PS/2, I'm crossposting... Most of the time, after I boot my system, there seems to be a character in the keyboard buffer. It's displayed as ^@ at the first prompt (probably a 0 character) and can be easily erased. It happens under DOS and OS/2 DOS-box. Of course no character appears in protected mode sessions. I suspect the keyboard controller gets messed up somewhere in the boot process, but I have no idea what could be done about it. It's a little annoying although not particularly harmful. Btw, it happens only about 9 out of 10 times... My system: ALR PowerVEISA 486/25 w/ Phoenix BIOS version 1.00.04 Any insight into the problem would be appreciated. ANYBODY AT PHOENIX LISTENING OUT THERE? (think it might be their problem:-)) Harald PS: Doorn, did you try a different keyboard yet? I haven't had a chance yet, but I will... -- Harald Boegeholz |Home: hwb@texnix.stgt.sub.org (read daily) |University: boegehol@az3.informatik.uni-stuttgart.de | ^ please use the latter for large (>100k) mails -- Harald Boegeholz |Home: hwb@texnix.stgt.sub.org (read daily) |University: boegehol@az3.informatik.uni-stuttgart.de | ^ please use the latter for large (>100k) mail
jporter@twaddle.dell.com (Jeff Porter) (02/08/91)
In article <BOEGEHOL.91Feb7161812@asdemo.informatik.uni-stuttgart.de>, boegehol@informatik.uni-stuttgart.de (Harald Boegeholz) writes: |> In article <8976@star.cs.vu.nl> of comp.sys.ibm.ps2.hardware, |> mabdoor@cs.vu.nl (Doorn van MAB) writes: |> > I have a strange question about my IBM PS/2 Model 50Z. |> > |> > When I boot with MS-DOS, I get my normal prompt, but there also appears an |> > extra character. |> ... |> > I have to press Backspace to erase the character. Then I have no problem, my |> > system works fine. |> ... |> > NOTE2: It's not MS-DOS-s fault. The character also appears when I boot |> > MINIX (a unix version), or the OS/2 DOS-box. |> I got the same problem. Since it is not a PS/2, I'm crossposting... |> |> Most of the time, after I boot my system, there seems to be a |> character in the keyboard buffer. It's displayed as ^@ at the |> first prompt (probably a 0 character) and can be easily erased. |> |> It happens under DOS and OS/2 DOS-box. Of course no character appears |> in protected mode sessions. |> |> I suspect the keyboard controller gets messed up somewhere in the boot |> process, but I have no idea what could be done about it. It's a little |> annoying although not particularly harmful. Btw, it happens only about |> 9 out of 10 times... |> There is a problem with the KEYB.COM (or KEYB.SYS) file shipped with some versions of MS-DOS. It has been known to cause strange characters to appear on boot (such as ^@ and ^H). Jeff Porter