From mboxrd@z Thu Jan 1 00:00:00 1970 From: asbesto@freaknet.org (asbesto) Date: Tue, 15 Apr 2003 21:22:42 +0000 Subject: [TUHS] PDP11/34 boot problems, here i am again :) In-Reply-To: <200304151942.h3FJgO900113@opihi.ucsd.edu> References: <200304151942.h3FJgO900113@opihi.ucsd.edu> Message-ID: <20030415212242.GA2131@freaknet.org> Il Tue, Apr 15, 2003 at 12:42:24PM -0700, Carl Lowenstein rigurgitava: > While you probably _do_ have a real hardware problem with the broken > IC, I think that the red Parity Error light on first turn-on is normal > behavior. The MOS memory comes up with random values, and about half > of them will have the wrong parity. Some software routine must turn > off parity error detection and write a known data pattern (all 0's) to > each memory location. I don't remember whether this is something that > is done by the boot ROM of an 11/34. hmmm but running any code on the pdp11/34 (specifically, some boot code) will also result in the red light turn off and on again :( -- [asbesto : freaknet medialab : radio#cybernet : GPG key on keyservers] [ MAIL ATTACH, SPAM, HTML, WORD, and msgs larger than 95K > /dev/null ] [http://www.freaknet.org/asbesto :::::: http://kyuzz.org/radiocybernet] -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available URL: