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- From: pcg@aber.ac.uk (Piercarlo Grandi)
- Newsgroups: comp.protocols.tcp-ip.ibmpc,comp.sys.ibm.pc.misc,comp.dcom.lans.ethernet,comp.os.msdos.programmer
- Subject: Re: BOOTP, pkt drivers, and ethernet board type (SUMMARY)
- Message-ID: <PCG.93Jan25222500@decb.aber.ac.uk>
- Date: 25 Jan 93 22:25:00 GMT
- References: <PCG.93Jan12184450@decb.aber.ac.uk> <1993Jan19.220337.5676@intrepid.com>
- Sender: news@aber.ac.uk (USENET news service)
- Reply-To: pcg@aber.ac.uk (Piercarlo Grandi)
- Organization: Prifysgol Cymru, Aberystwyth
- Lines: 41
- In-Reply-To: vladimir@intrepid.com's message of 19 Jan 93 22: 03:37 GMT
- Nntp-Posting-Host: decb.aber.ac.uk
-
- >>> On 19 Jan 93 22:03:37 GMT, vladimir@intrepid.com (Vladimir Vukicevic) said:
-
- pcg> The problem is those dozen or so types of cards. In order to start
- pcg> the whole process the right driver (and its configuration) must be
- pcg> individuated [ ... ]
-
- Vukicevic> I assume that all these PCs have a writeable HD partition
- Vukicevic> [D:] (if not, forget this message! :).
-
- They do, but I cannot rely on this...
-
- Vukicevic> Why not just create a read-only/hidden file on D:, called,
- Vukicevic> for example, netstart.bat.
-
- ...as the D: partition is r/w to everybody as a scratch area. The C:
- partition is r/o so that users cannot tamper with it; D: is not. We
- cannot depend on user not to remove the read-only/hidden file on D:;
- indeed they can reformat D: at will, and even worse, D: gets actually
- reformatted on the first boot of the day.
-
- All in all I think that the better ideas I came up with (one of them was
- also suggested in an e-mail contribution) are:
-
- 1) find 4-5 unassigned bits in the CMOS RAM, and define as new
- 'ethernet board type' field in it, just as now there are two
- 6 bit 'hard drive type' fields.
-
- 2) put the ethernet board type in a spare byte in the boot block or
- in the partition table as a fake partition or in a spare sector
- on track 0.
-
- If I come around to writing a nice command 'ethertype [get | put NN] I
- will post it...
-
- Has anybody got any suggestion as to whether there are any unassigned
- bits in the CMOS RAM of any/most AT class machines?
-
-
- --
- Piercarlo Grandi <pcg@aber.ac.uk> c/o Dept of CS
- University of Wales, Penglais, Aberystwyth SY23 3BZ, UK
-