www.delorie.com/archives/browse.cgi | search |
From: | "Liam D. Redmond" <LiamRedmond AT busicom DOT demon DOT co DOT uk> |
Newsgroups: | comp.os.msdos.djgpp |
Subject: | Re: (SOT) Boot environment |
Date: | Mon, 23 Nov 1998 14:11:32 -0000 |
Message-ID: | <911830357.14556.0.nnrp-05.d4e48df1@news.demon.co.uk> |
References: | <3658a7a7 DOT 104312 AT newshost DOT cc DOT utexas DOT edu> |
NNTP-Posting-Host: | busicom.demon.co.uk |
X-NNTP-Posting-Host: | busicom.demon.co.uk:212.228.141.241 |
X-Trace: | news.demon.co.uk 911830357 nnrp-05:14556 NO-IDENT busicom.demon.co.uk:212.228.141.241 |
X-Complaints-To: | abuse AT demon DOT net |
X-Newsreader: | Microsoft Outlook Express 4.72.3110.1 |
X-MimeOLE: | Produced By Microsoft MimeOLE V4.72.3110.3 |
Lines: | 29 |
To: | djgpp AT delorie DOT com |
DJ-Gateway: | from newsgroup comp.os.msdos.djgpp |
Reply-To: | djgpp AT delorie DOT com |
Phoenix Technologies (a well know known BIOS manufacturer) produce some very good books on the 'pre-operating system' state of the PC and how BIOS's work and actually how the BIOS loads the boot sector etc. Also some memory maps. I don't have my book with me so I can't give you the ISBN. Sorry. Cheers, Liam. D. Redmond. Jeramie Hicks wrote in message <3658a7a7 DOT 104312 AT newshost DOT cc DOT utexas DOT edu>... >Sorry for the "Slightly Off Topic" (SOT) post, but I don't know where >else a question like this is more appropriate. > >What is the computer environment like at boot time, specifically the >16-bit memory layout before any OS plays with it? I know the the >vector table starts at memory 0. The video memory is at 0xA000 >(hardware standard, or MS de facto standard?). Pnp BIOSes float their >data in memory (I can look that up, I've read it before). But what >else is already loaded in memory, before even the boot sector is >loaded? > >Thanks! And sorry for being SOT... > >- Jeramie Hicks
webmaster | delorie software privacy |
Copyright © 2019 by DJ Delorie | Updated Jul 2019 |