UDSC.EQU
资源名称:drdossrc.zip [点击查看]
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上传日期:2007-01-08
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操作系统开发
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Asm
- ; File : $UDSC.EQU$
- ;
- ; Description :
- ;
- ; Original Author : DIGITAL RESEARCH
- ;
- ; Last Edited By : $CALDERA$
- ;
- ;-----------------------------------------------------------------------;
- ; Copyright Work of Caldera, Inc. All Rights Reserved.
- ;
- ; THIS WORK IS A COPYRIGHT WORK AND CONTAINS CONFIDENTIAL,
- ; PROPRIETARY AND TRADE SECRET INFORMATION OF CALDERA, INC.
- ; ACCESS TO THIS WORK IS RESTRICTED TO (I) CALDERA, INC. EMPLOYEES
- ; WHO HAVE A NEED TO KNOW TO PERFORM TASKS WITHIN THE SCOPE OF
- ; THEIR ASSIGNMENTS AND (II) ENTITIES OTHER THAN CALDERA, INC. WHO
- ; HAVE ACCEPTED THE CALDERA OPENDOS SOURCE LICENSE OR OTHER CALDERA LICENSE
- ; AGREEMENTS. EXCEPT UNDER THE EXPRESS TERMS OF THE CALDERA LICENSE
- ; AGREEMENT NO PART OF THIS WORK MAY BE USED, PRACTICED, PERFORMED,
- ; COPIED, DISTRIBUTED, REVISED, MODIFIED, TRANSLATED, ABRIDGED,
- ; CONDENSED, EXPANDED, COLLECTED, COMPILED, LINKED, RECAST,
- ; TRANSFORMED OR ADAPTED WITHOUT THE PRIOR WRITTEN CONSENT OF
- ; CALDERA, INC. ANY USE OR EXPLOITATION OF THIS WORK WITHOUT
- ; AUTHORIZATION COULD SUBJECT THE PERPETRATOR TO CRIMINAL AND
- ; CIVIL LIABILITY.
- ;-----------------------------------------------------------------------;
- ;
- ; *** Current Edit History ***
- ; *** End of Current Edit History ***
- ;
- ; $Log$
- ; ENDLOG
- UDSC_BPB_LENGTH equ 25
- UDSC struc
- UDSC_NEXT dd ? ; link to next UDSC_
- UDSC_RUNIT db ? ; ROS drive number (0/1/80/81)
- UDSC_DRIVE db ? ; logical drive
- UDSC_BPB db UDSC_BPB_LENGTH dup (?) ; current BPB
- UDSC_FATFLAG db ?
- UDSC_OPNCNT dw ? ; # of files open on drive
- UDSC_TYPE db ? ; floppy drive type (0/1/2/7)
- UDSC_FLAGS dw ? ; various flags for drive
- UDSC_NCYL dw ? ; # of cylinders per drive
- UDSC_DEVBPB db UDSC_BPB_LENGTH dup (?) ; device BPB
- db 7 dup (?)
- UDSC_TIMER dw 2 dup (?) ; tick count for MEDCHK
- UDSC_LABEL db 12 dup (?) ; ASCIIZ volume label
- UDSC_SERIAL dd ? ; serial number
- UDSC_FSTYPE db 9 dup (?) ; ASCIIZ "FAT12"/"FAT16" type
- UDSC ends
- UDSC_LENGTH equ size UDSC
- UDF_HARD equ 0001h ; drive is a hard disk
- UDF_CHGLINE equ 0002h ; drive support disk change line
- UDF_UNSURE equ 0004h ; drive has just been formatted
- UDF_VFLOPPY equ 0010h ; drive shares physical drive
- UDF_OWNER equ 0020h ; logical drive "owns" physical drive
- UDF_MEDIA equ 0100h ; media id is from bootsec, not default
- MAXPART equ 26 ; support up 26 drives