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Article #448

Example block driver code & HPFS info

#448
From: Jeff Gortatowsky CUST
Date: Mon, 09 Apr 1990 20:03
29 lines
1775 bytes
I'm just starting to write an OS/2 non-booting SCSI device driver
so I can use my SCSI drive.  Right now I'm limited to using the
MFM drive unless running real DOS.  I've got lots of materials
(books, etc...) but I still *love* to see a real DMA capable example
of a block device driver before diveing in (tho dive I will). If you
have such code and can send source I'd love to receive it.

Second item.  Does anyone have the technical layout of the HPFS? 
I've looked in my Microsoft book that came with the PM toolkit
and nothing is described.  Of course all the books I have don't
even know about OS/2 1.2 or IFS's.  Does anyone have an electronic
version of a HPFS reference or structures/layout?  I *THINK* I
need it for my device driver because it must return information
in the boot block about the file system (like volume name, and 
starting directory block, etc.).  This would be old hat under
the FAT FS.  But I have no idea what to look for in an HPFS boot
block and what to do with it when I found it.  I know everything
has been tossed with the HPFS.  Any help (maybe the C structure
equivlents) would be appreciated.

cheers,
	Jeff Gortatowsky


-- 
Jeff Gortatowsky-Eastman Kodak Company  .....sun!sunrock!kodak!elmgate!jdg
(716)-726-0084
Eastman Kodak makes film not comments.  Therefore these comments are mine
not theirs.
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!udel!rochester!kodak!elmgate!jdg
From: jdg@elmgate.UUCP (Jeff Gortatowsky CUST)
Newsgroups: comp.os.os2
Subject: Example block driver code & HPFS info
Message-ID: <1243@elmgate.UUCP>
Date: 9 Apr 90 20:03:17 GMT
Reply-To: jdg@elmgate.UUCP (Jeff Gortatowsky CUST)
Organization: Eastman Kodak Company, Rochester, NY
Lines: 29