Date: Sat, 9 Sep 1995 16:18:12 -0500 (CDT) From: Rob Snow <rsnow@txdirect.net> To: Randy Berndt <rberndt@nething.com> Cc: Brian Litzinger <brian@MediaCity.com>, freebsd-questions@freebsd.org Subject: Re: watchdog board? Message-ID: <Pine.BSF.3.91.950909161108.12619B-100000@oasis> In-Reply-To: <199509081622.LAA21572@vellocet.insync.net>
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On Fri, 8 Sep 1995, Randy Berndt wrote: > At 01:22 AM 9/8/95 -0700, Brian Litzinger wrote: > >Is there a cheap card out there that will push the reset button for > >me if my machine hangs up? > > > > Don't have the details in front of me, but Galacticomm (the BBS people) have > a magazine with this board advertised. It was expensive for what it did > (About $200 as I recall, a friend bought one for his bbs). The "keep-awake" > program was dos-tsr based, so you would need to write something for it. > Basically, it sent a timer reset signal to the board, and if the timer ever > expired, it hit the switch. Unfortunately, the design substituted for the > reset switch, rather than hooking up parallel. (You could rewire it easily > enough, though.) > > Check boardwatch magazine for Galacticomm. > > Randy Berndt <rberndt@nething.com> > ---------------------------------- > AOS/VS, FreeBSD, DOS: > I'm caught in a maze of twisty little command interpreters, all different. > I believe that I remember a message here in hackers? hardware? early this year about a watchdog board. (Really streching..... I believe it came with either source? or a FreeBSD binary? ) Hold on, (firing up netscape) Ahh, here it is: /******* NEW PRODUCT ANNOUNCEMENT FOR BSD UN*X ********/ Now available for BSD/OS and FreeBSD, the ET/WDT watchdog timer card. The ET/WDT watchdog timer can detect system failures and physically reboot your PC in seconds in an unattended environment, or can be used to physically reset your PC from a remote location, eliminating reboot hangs. The ET/WDT is an ISA card with a hardware timer that wires directly into the reset switch on the pc and can reset the PC just as if you pressed the reset button. The watchdog timer can detect system hangs in seconds instead of hours. A simple utility is provided which sets the watchdog timer to reboot the PC after X seconds (were X is 0 to 2500) if not notified before the timer expires. A driver supplied with the board uses an on-board interrupt which notifies the watchdog timer once per second that the system is alive. If you have source code to the operating system ( or other Emerging Technologies communications boards) you can enhance the function or disable the on-board interrupt and use other supplied mechanisms to notify the watchdog that the system is running properly. (i.e. IP traffic, Ethernet interface interrupts, etc). Additionally, running the utility with a timeout value of 0 physically boots the PC on demand. Availability: Immediate. Pricing. ET/WDT Stand-alone watchdog Timer Board . Quantity 1 - $195. 2+ 169. 5+ $149. ET/5021 RS-232 56k-64k Com Board with on-board watchdog Timer Quantity 1 - $495. ET/5021 V.35 56k-T1 Com Board with on-board watchdog Timer Quantity 1 - $595. Emerging Technologies, Inc. (516) 271-4525 E-Mail: dennis@et..htp.com ______________________________________________________________________ Rob Snow Powered by FreeBSD rsnow@txdirect.net http://www.freebsd.org
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