From: "Charles Sandmann" Newsgroups: comp.os.msdos.djgpp Subject: Re: Keyboard Lockups Date: Thu, 13 Apr 2000 16:15:17 Organization: Aspen Technology, Inc. Lines: 22 Message-ID: <38f5f295.sandmann@clio.rice.edu> References: <38ED9D75 DOT 13827ACF AT is DOT elta DOT co DOT il> NNTP-Posting-Host: dcloan.hou.aspentech.com X-Trace: selma.aspentech.com 955661033 29630 10.32.115.107 (13 Apr 2000 21:23:53 GMT) X-Complaints-To: postmaster AT aspentech DOT com NNTP-Posting-Date: 13 Apr 2000 21:23:53 GMT X-NewsEditor: ED-1.5.8 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com > Raymond Martineau wrote: > > Under MS-DOS 7.0 (Windows 95 in Dos mode), I encounter keyboard > > lockups when I quit a program compiled by a recent version of DJGPP. > > When I either press or release a key during a split second window of > > the program terminating, the keyboard completely locks up, and does > > not respond. > Eli Responds: > I have never seen such problems, and neither did anyone else complained about > this, ever. I saw this behavior under V2.01 on a 486/33 under DOS (and no other system). It was infrequent but common enough to be a real pain. V2.00 didn't do this. I didn't have time to investigate and I didn't use the system very often. But I don't think it's completely uncommon. It would happen on all programs built with V2.01 that I tested, even simple "hello world" ones if I ran them frequently enough. Since the CTRL-C handler hooks the HW interrupt for the keyboard, I tried to disable this and the symptoms went away. So I'm sure it was some strange window of vunerability at exit. I have no idea if this still exists in recent versions.