82 lines
3.4 KiB
PHP
82 lines
3.4 KiB
PHP
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; SCCSID = @(#)cpmfcb.asm 1.1 85/04/10
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; SCCSID = @(#)cpmfcb.asm 1.1 85/04/10
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;BREAK <File Control Block definition>
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;
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; Field definition for FCBs
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; The FCB has the following structure:
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;
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; +---------------------------+
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; | Drive indicator(byte) |
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; +---------------------------+
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; | Filename (8 chars) |
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; +---------------------------+
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; | Extension (3 chars) |
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; +---------------------------+
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; | Current Extent(word) |
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; +---------------------------+
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; | Record size (word) |
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; +---------------------------+
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; | File Size (2 words) |
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; +---------------------------+
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; | Date of write |
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; +---------------------------+
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; | Time of write |
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; +---------------------------+
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;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;
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; C A V E A T P R O G R A M M E R ;
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; ;
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; +---------------------------+
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; | 8 bytes reserved |
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; +---------------------------+
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; ;
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; C A V E A T P R O G R A M M E R ;
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;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;
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; | next record number |
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; +---------------------------+
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; | random record number |
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; +---------------------------+
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;
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sys_fcb STRUC
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fcb_drive DB ?
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fcb_name DB 8 DUP (?)
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fcb_ext DB 3 DUP (?)
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fcb_EXTENT DW ?
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fcb_RECSIZ DW ? ; Size of record (user settable)
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fcb_FILSIZ DW ? ; Size of file in bytes; used with the
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; following word
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fcb_DRVBP DW ? ; BP for SEARCH FIRST and SEARCH NEXT
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fcb_FDATE DW ? ; Date of last writing
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fcb_FTIME DW ? ; Time of last writing
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;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;
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; C A V E A T P R O G R A M M E R ;
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; ;
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fcb_reserved DB 8 DUP (?) ; RESERVED
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; ;
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; C A V E A T P R O G R A M M E R ;
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;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;
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fcb_NR DB ? ; Next record
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fcb_RR DB 4 DUP (?) ; Random record
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sys_fcb ENDS
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FILDIRENT = fcb_FILSIZ ; Used only by SEARCH FIRST and SEARCH
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; NEXT
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; FCB's reserve area is interpreted on NT as follows.
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fcb_sfn EQU BYTE PTR fcb_reserved ; SFN
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fcb_res_dev EQU BYTE PTR fcb_reserved+1 ; 1 if local device
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fcb_res_dummy EQU BYTE PTR fcb_reserved+2 ; Not using in NT
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fcb_res_dummy2 EQU BYTE PTR fcb_reserved+3 ; Not using in NT
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fcb_res_Sig EQU DWORD PTR fcb_reserved+4 ; Using as a check
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; fcb_nsl_Sig is a signature to check if the FCB-SFT association is valid.
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;
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; for a local device this field contains the devptr. sft's field devptr
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; is checked against it.
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;
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; for a file/UNC/pipe etc this field contains an NT handle. sft's NThandle
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; field is checked against it.
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