Path: utzoo!attcan!uunet!van-bc!lpami
From: lphillips@lpami.van-bc.UUCP (Larry Phillips)
Newsgroups: comp.sys.amiga
Subject: Re: Disk environment vector, MakeDosNode
Message-ID: <1949@van-bc.UUCP>
Date: 14 Nov 88 14:40:55 GMT
Sender: lpami@van-bc.UUCP
Lines: 48


> Where are those new mountlist entries "MaxTransfer, dostype, etc."
> located in the disk environment vector (I want to supply the parameters
> via MakeDosNode()) and what exactly do they mean? The last one that is
> documented is "DE_BufMemType".

 struct DosEnvec {
    ULONG de_TableSize;    /* check this for size of this table */
    ULONG de_SizeBlock;
    ULONG de_SecOrg;
    ULONG de_Surfaces;
    ULONG de_SectorPerBlock;
    ULONG de_BlocksPerTrack;
    ULONG de_Reserved;
    ULONG de_PreAlloc;
    ULONG de_Interleave;
    ULONG de_LowCyl;
    ULONG de_HighCyl;
    ULONG de_NumBuffers;
    ULONG de_BufMemType;
    ULONG de_MaxTransfer;
    ULONG de_Mask;
    LONG de_BootPri;
    ULONG de_DosType;
 };

  As for what they mean, MaxTransfer tells the file system how large a
transfer can be, for those drivers that do not handle transfer larger than
the controller limit. Mask tells the driver where it can transfer to/from
with DMA. BootPri sets the boot priority of a device, and DOSType is
old or new file system.

> How do I tell the system to use another filesystem like FFS (not in
> the mountlist but with AddDosNode())? Should I patch the structure
> returned by MakeDosNode()?

Wish I could help you with this one.

-larry

--
"Intelligent CPU?  I thought you said Intel CPU!" 
        -Anonymous IBM designer-
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|   //   Larry Phillips                                          |
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