57 lines
1.8 KiB
PHP
57 lines
1.8 KiB
PHP
; SCCSID = @(#)pdb.asm 1.1 85/04/10
|
||
BREAK <Process data block>
|
||
|
||
;** Process data block (otherwise known as program header)
|
||
;
|
||
|
||
; These offset are documented in the MSDOS Encyclopedia, so nothing
|
||
; can be rearranged here, ever. Reserved areas are probably safe
|
||
; for use.
|
||
|
||
|
||
FilPerProc EQU 20
|
||
|
||
Process_data_block STRUC
|
||
PDB_Exit_Call DW ? ; INT int_abort system terminate
|
||
PDB_block_len DW ? ; size of execution block
|
||
DB ?
|
||
PDB_CPM_Call DB 5 DUP (?) ; ancient call to system
|
||
PDB_Exit DD ? ; pointer to exit routine
|
||
PDB_Ctrl_C DD ? ; pointer to ^C routine
|
||
PDB_Fatal_abort DD ? ; pointer to fatal error
|
||
PDB_Parent_PID DW ? ; PID of parent (terminate PID)
|
||
PDB_JFN_Table DB FilPerProc DUP (?)
|
||
PDB_environ DW ? ; seg addr of environment
|
||
PDB_User_stack DD ? ; stack of self during system calls
|
||
PDB_JFN_Length DW ? ; number of handles allowed
|
||
PDB_JFN_Pointer DD ? ; pointer to JFN table
|
||
PDB_Next_PDB DD ? ; pointer to nested PDB's
|
||
|
||
PDB_InterCon DB ? ; *** jh-3/28/90 ***
|
||
PDB_Append DB ? ; *** Not sure if still used ***
|
||
|
||
PDB_Novell_Used DB 2 DUP (?) ; Novell shell (redir) uses these
|
||
|
||
PDB_Version DW ? ; DOS version reported to this app
|
||
|
||
PDB_PAD1 DB 0Eh DUP (?)
|
||
PDB_Call_system DB 5 DUP (?) ; portable method of system call
|
||
PDB_PAD2 DB 7h DUP (?) ; reserved so FCB 1 can be used as
|
||
; an extended FCB
|
||
PDB_FCB1 DB 10h dup (?) ; default FCB 1
|
||
PDB_FCB2 DB 10h dup (?) ; default FCB 2
|
||
PDB_PAD3 DB 4 dup (?) ; not sure if this is used by PDB_FCB2
|
||
PDB_TAIL DB 128 dup (?) ; command tail and default DTA
|
||
|
||
|
||
|
||
Process_data_block ENDS
|
||
|
||
|
||
;
|
||
;PDB_Append equ BYTE PTR PDB_PAD1 + 1 ; reincluded because APPEND
|
||
; ; wouldn't build w/o it. feb 1990, leaf
|
||
;
|
||
;PDB_InterCon EQU BYTE PTR PDB_PAD1 ; 2/12/KK
|
||
;
|
||
|