X-Authentication-Warning: delorie.com: mailnull set sender to djgpp-bounces using -f From: "Petr Maxa" Newsgroups: comp.os.msdos.djgpp Subject: strange problem with dos DPMI Date: Thu, 17 Jan 2002 23:33:10 +0100 Lines: 26 Message-ID: NNTP-Posting-Host: dial216.za.euroweb.sk (195.72.5.216) X-Trace: fu-berlin.de 1011306976 32517322 195.72.5.216 (16 [127824]) X-Priority: 3 X-MSMail-Priority: Normal X-Newsreader: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com Hello all, I have program, which runs correctly under win95 dpmi server, but under clear dos v 7.0 with csdpmi5 server has strange behaviour: The program installs protected mode driver for serial port, tries to sends some bytes over it, but wve it also writes/reads from disk during it, the program frees for several seconds (cca 30 secs) and then runs agains. The same program runs under win95 without any problems and the same variation of this program build by borland runs without any problems. I am looking for some tips as I have tried several test without success. I even created a small version of this program, but it works without any problems also in DOS. So please if You have any tips, please let me know. Best regards, Petr Maxa