/*  */
/* BEGIN INCLUDE ..............imp_dim_data..................... */

/* For IMP DIM */

dcl  imp_data$dim ext;

dcl 1 dim based aligned,

/* Following variables are for initialization value, locks etc. */

    2 initialized bit (36) aligned,			/* IMP DIM has been initialized if non-zero */
    2 lock bit (36) aligned,				/* IMP DIM sets this lock */
    2 lock_event_id fixed bin,			/* The event number for unlocking above lock */

    2 messages_received fixed bin (34),			/* This variable is incremented at the interrupt
						   time when a message is received. */
    2 messages_processed fixed bin (34),		/* This variable is incremented after a message has
						   been processed.When there are no messages
						   in the wired down buffers of IMP DCM this variable
						   should be eual to the above. */
    2 state_queue_in fixed bin (34),			/* Number of entries put in the state
						   queue. (Whenever thestate of IMP changes an entry
						   is put in the state queue. */
    2 state_queue_out fixed bin (34),
    2 dummy1 fixed bin,
    2 state_queue (1:8),
      3 state char (8) aligned,
      3 status fixed binary (35),
    2 state_of_imp char (8) aligned,			/* Current state of IMP */
    2 bad_state bit (1),				/* If on something is wrong. */
    2 filler fixed bin (35),

/* Miscellaneous */

    2 init_time fixed bin (71),			/* Time when IMP DIM was initialized */
    2 finish_time fixed bin (71),			/* Time when IMP DIM was finished */
    2 no_buffering bit (1) aligned,			/* If bit on no write behind for write links */
    2 input_processing_blocked bit (1) aligned,		/* If due to lack of pageable buffers input
						   processing is stopped this bit is turned
						   on. */
    2 new_error_codes bit (1),			/* If on new error codes are returned. */
    2 imp_going_down bit (32);			/* If on IMP is about to go down. */

/* END INCLUDE.................imp_dim_data.............. */


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


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

*/