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add comments about what flags mean 

git-svn-id: https://svn.code.sf.net/p/freedos/svn/kernel/branches/UNSTABLE@1150 6ac86273-5f31-0410-b378-82cca8765d1b
This commit is contained in:
Kenneth J Davis 2005-11-20 16:17:43 +00:00
parent 630e5c64d7
commit 23006698f1
1 changed files with 10 additions and 10 deletions
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20
hdr/device.h
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@ -245,16 +245,16 @@ typedef struct ddtstruct {
} ddt;
/* description flag bits */
#define DF_FIXED 0x001
#define DF_CHANGELINE 0x002
#define DF_CURBPBLOCK 0x004
#define DF_SAMESIZE 0x008
#define DF_MULTLOG 0x010
#define DF_CURLOG 0x020
#define DF_DISKCHANGE 0x040
#define DF_DPCHANGED 0x080
#define DF_REFORMAT 0x100
#define DF_NOACCESS 0x200
#define DF_FIXED 0x001 /* fixed media, ie hard drive */
#define DF_CHANGELINE 0x002 /* door lock or disk change detection reported as supported */
#define DF_CURBPBLOCK 0x004 /* current BPB locked ??? */
#define DF_SAMESIZE 0x008 /* all sectors in a track are the same size */
#define DF_MULTLOG 0x010 /* physical drive represents multiple logical ones, eg A: & B: */
#define DF_CURLOG 0x020 /* active (current) logical drive for this physical drive */
#define DF_DISKCHANGE 0x040 /* disk change was detected */
#define DF_DPCHANGED 0x080 /* device parameters changed */
#define DF_REFORMAT 0x100 /* disk formatted so BPB has changed */
#define DF_NOACCESS 0x200 /* don't allow access (read or write) to fixed media */
/* freedos specific flag bits */
#define DF_LBA 0x400
#define DF_WRTVERIFY 0x800