DOS 3.30 source code leak
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; SCCSID = @(#)pdb.asm 1.1 85/04/10BREAK <Process data block>
;; Process data block (otherwise known as program header);
FilPerProc EQU 20
Process_data_block STRUCPDB_Exit_Call DW ? ; INT int_abort system terminatePDB_block_len DW ? ; size of execution block DB ?PDB_CPM_Call DB 5 DUP (?) ; ancient call to systemPDB_Exit DD ? ; pointer to exit routinePDB_Ctrl_C DD ? ; pointer to ^C routinePDB_Fatal_abort DD ? ; pointer to fatal error;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;; C A V E A T P R O G R A M M E R ;; ;PDB_Parent_PID DW ? ; PID of parent (terminate PID)PDB_JFN_Table DB FilPerProc DUP (?) ; indices into system table; ;; C A V E A T P R O G R A M M E R ;;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;PDB_environ DW ? ; seg addr of environment;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;; C A V E A T P R O G R A M M E R ;; ;PDB_User_stack DD ? ; stack of self during system callsPDB_JFN_Length DW ? ; number of handles allowedPDB_JFN_Pointer DD ? ; pointer to JFN tablePDB_Next_PDB DD ? ; pointer to nested PDB'sPDB_PAD1 DB 14h DUP (?); ;; C A V E A T P R O G R A M M E R ;;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;PDB_Call_system DB 5 DUP (?) ; portable method of system call;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;; C A V E A T P R O G R A M M E R ;; ;PDB_PAD2 DB 7h DUP (?); ;; C A V E A T P R O G R A M M E R ;;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;Process_data_block ENDS
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