/* BEGIN INCLUDE FILE  syserr_data.incl.pl1 */

/* Created by  Bill Silver  on 01/03/73. */
/* Modified September 1975 by Larry Johnson to add binary data */
/* Modified March 1976 by Steve Webber for use with cds */
/* Modified 1985-01-21 by EJ Sharpe: added wmess.process_id */
/* Modified 1985-02-18 by Keith Loepere to break out headers. */

/* This include file defines the syserr and log areas found in  syserr_data.cds
   There is one lock that coordinates the use of all the data found in
   syserr_data.cds.  NOTE, if this include file changes, syserr_data.cds
   may also have to be changed. */

dcl  syserr_data$syserr_area char (1) aligned external,
     syserr_data$wired_log_area char (1) aligned external;

dcl  sd_ptr ptr,					/* Pointer to beginning of syserr_area. */
     wlog_ptr ptr,					/* Pointer to beginning of wired_log_area. */
     wmess_ptr ptr;					/* Pointer to a message entry in the wired log. */

dcl 1 sd based (sd_ptr) aligned,			/* Overlay of syserr_data$syserr_area. */
    2 lock bit (36),				/* Locks all the data in syserr_data. */
    2 log_flag bit (1) unal,				/* ON => logging mechanism enabled. */
    2 char_type_flag bit (1) unal,			/* ON => ASCII,  OFF => BCD. */
    2 ocdcm_init_flag bit (1) unal,			/* ON => ocdcm_ has been initialized. */
    2 pad bit (33) unal,
    2 prev_text_written char (80);			/* Text of last message written */

dcl 1 wlog based (wlog_ptr) aligned,			/* Overlay of syserr_data$wired_log_area. */
    2 head like wlog_header,				/* Wired log header. */
    2 buffer (wlog.head.bsize) bit (36);		/* Wired log buffer. */

dcl 1 wlog_header based aligned,			/* WIRED LOG HEADER */
    2 bsize fixed bin,				/* Size of the wired log buffer in words.
						   Defined in syserr_data.cds. */
    2 count fixed bin,				/* Num of message entries in wired log. */
    2 slog_ptr ptr,					/* Pointer to the paged log segment: syserr_log. */
    2 seq_num fixed bin (35),				/* Sequence number of last message logged. */
    2 next bit (18) unal,				/* Offset relative to base syserr_data */
						/* Where next entry will go in wired log. */
    2 pad bit (18) unal;


/* This is an overlay of a message entry that goes into the wired log.  Each message
   entry corresponds to one syserr message. */

dcl 1 wmess based (wmess_ptr) aligned,
    2 header aligned like wmess_header,
    2 text char (0 refer (wmess.text_len)),		/* Text of expanded message - kept in ASCII. */
    2 data (0 refer (wmess.data_size)) bit (36);		/* Binary data area */

dcl 1 wmess_header based aligned,
    2 seq_num fixed bin (35),				/* Sequence number of this message. */
    2 time fixed bin (71) unal,			/* Time message logged at */
    2 code fixed bin (11) unal,			/* Syserr code associated with this message. */
    2 text_len fixed bin (11) unal,			/* Length of message text in ASCII characters. */
    2 data_size fixed bin (11) unal,			/* Size of binary data */
    2 data_code fixed bin (11) unal,			/* Data code */
    2 pad bit (24) unal,
    2 process_id bit (36);				/* ID of process which wrote message */

/* END INCLUDE FILE syserr_data.incl.pl1 */


*/
                                          -----------------------------------------------------------


Historical Background

This edition of the Multics software materials and documentation is provided and donated
to Massachusetts Institute of Technology by Group Bull including Bull HN Information Systems Inc. 
as a contribution to computer science knowledge.  
This donation is made also to give evidence of the common contributions of Massachusetts Institute of Technology,
Bell Laboratories, General Electric, Honeywell Information Systems Inc., Honeywell Bull Inc., Groupe Bull
and Bull HN Information Systems Inc. to the development of this operating system. 
Multics development was initiated by Massachusetts Institute of Technology Project MAC (1963-1970),
renamed the MIT Laboratory for Computer Science and Artificial Intelligence in the mid 1970s, under the leadership
of Professor Fernando Jose Corbato. Users consider that Multics provided the best software architecture for 
managing computer hardware properly and for executing programs. Many subsequent operating systems 
incorporated Multics principles.
Multics was distributed in 1975 to 2000 by Group Bull in Europe , and in the U.S. by Bull HN Information Systems Inc., 
as successor in interest by change in name only to Honeywell Bull Inc. and Honeywell Information Systems Inc. .

                                          -----------------------------------------------------------

Permission to use, copy, modify, and distribute these programs and their documentation for any purpose and without
fee is hereby granted,provided that the below copyright notice and historical background appear in all copies
and that both the copyright notice and historical background and this permission notice appear in supporting
documentation, and that the names of MIT, HIS, Bull or Bull HN not be used in advertising or publicity pertaining
to distribution of the programs without specific prior written permission.
    Copyright 1972 by Massachusetts Institute of Technology and Honeywell Information Systems Inc.
    Copyright 2006 by Bull HN Information Systems Inc.
    Copyright 2006 by Bull SAS
    All Rights Reserved

*/