From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mailserv2.iuinc.com (qmailr@mailserv2.iuinc.com [206.245.164.55]) by puffin.external.hp.com (8.8.7/8.8.7) with SMTP id CAA06326 for ; Tue, 13 Jul 1999 02:48:16 -0600 Received: from nemeton.com.au (dy02.edison.dialix.com.au [203.12.2.33]) by edison.dialix.com.au (8.9.1/8.9.1/DIALixFlat) with ESMTP id SAA11556 for ; Tue, 13 Jul 1999 18:48:33 +1000 (EST) (envelope-from giles@nemeton.com.au) To: Thomas Bogendoerfer cc: parisc-linux@thepuffingroup.com Subject: Re: [parisc-linux] serial console In-reply-to: <19990712231019.A2039@alpha.franken.de> Date: Tue, 13 Jul 1999 18:50:30 +1000 Message-ID: <19099.931855830@nemeton.com.au> From: Giles Lean List-ID: On Mon, 12 Jul 1999 23:10:19 +0200 Thomas Bogendoerfer wrote: > > Also, is there an equivalent to Sun's L1-A or the Indy's > > send-break-over-serial that will get me back to the PROM in the event > > that Linux jumps to east nowhere? Or do I have to power cycle? > > So far everbody denied the existance of that essentiell (at least for > kernel hackers) feature. Historically on HP servers (series 800 machines) ^B gets you to "PROM" mode. It has varied on different machines whether this is enabled and disabled by a key, or a switch on the back, or is not able to be disabled at all. Some newer machines (some D series, all A series, all R series) don't have this functionality out unless an "access port" card is added to the system. These systems do still have a TOC (Transfer of Control) button so that dumps can be taken. I'll dig out the part number for the access port card if anyone cares; I don't have it to hand right now. Regards, Giles