MZ is back!HEADmain

1 files changed, 51 insertions, 0 deletions

diff --git a/v4.0/src/INC/PDB.INC b/v4.0/src/INC/PDB.INC
new file mode 100644
index 0000000..41fbd90
--- /dev/null
+++ b/v4.0/src/INC/PDB.INC
@@ -0,0 +1,51 @@
+;       SCCSID = @(#)pdb.asm    1.1 85/04/10
+BREAK <Process data block>
+
+;
+; Process data block (otherwise known as program header)
+;
+
+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
+;----+----+----+----+----+----+----+----+----+----+----+----+----+----+----;
+;            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 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_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
+
+PDB_InterCon    EQU     BYTE PTR PDB_PAD1       ; 2/12/KK
+PDB_Append      EQU     BYTE PTR PDB_PAD1+1     ; 2/12/KK
+
\ No newline at end of file