From owner-freebsd-hackers Fri Jul 7 00:02:08 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id AAA01707 for hackers-outgoing; Fri, 7 Jul 1995 00:02:08 -0700 Received: from gndrsh.aac.dev.com (gndrsh.aac.dev.com [198.145.92.241]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id AAA01701 for ; Fri, 7 Jul 1995 00:02:06 -0700 Received: (from rgrimes@localhost) by gndrsh.aac.dev.com (8.6.11/8.6.9) id AAA02389; Fri, 7 Jul 1995 00:01:43 -0700 From: "Rodney W. Grimes" Message-Id: <199507070701.AAA02389@gndrsh.aac.dev.com> Subject: Re: Booting/NCR problems [long] To: bde@zeta.org.au (Bruce Evans) Date: Fri, 7 Jul 1995 00:01:43 -0700 (PDT) Cc: hackers@freebsd.org, jaitken@vt.edu In-Reply-To: <199507070528.PAA06379@godzilla.zeta.org.au> from "Bruce Evans" at Jul 7, 95 03:28:27 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 604 Sender: hackers-owner@freebsd.org Precedence: bulk > > >[... as an aside, what the hell does this mean? ...] > >BIOS basemem (635K) != RTC basemem (640K) > > This means that the BIOS reserves 5K of memory for something and that > FreeBSD will not use that memory (actually 8K = 5K rounded up to a > page boundary) when it stops abusing the CMOS. That something is in all likely hood the sequencer code and state area for the SDMS NCR bios, since you don't want to bus master that out of ROM :-). -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Reliable computers for FreeBSD