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!<REL4A.TKB-VNP>WTSK.BLI.3,  3-Dec-79 15:19:43, Edit by SROBINSON
MODULE WTSK (					!WRITE TASK FILE
		IDENT = 'X2.0'
		) =
BEGIN
!
!
!
!                    COPYRIGHT (c) 1980, 1981, 1982
!                    DIGITAL EQUIPMENT CORPORATION
!                        Maynard, Massachusetts
!
!     This software is furnished under a license and may  be  used
!     and copied only in accordance with the terms of such license
!     and with the inclusion of the above copyright notice.   This
!     software  or any other copies thereof may not be provided or
!     otherwise made available to any other person.  No  title  to
!     and ownership of the software is hereby transferred.
!
!     The information  in  this  software  is  subject  to  change
!     without  notice  and should not be construed as a commitment
!     by DIGITAL EQUIPMENT CORPORATION.
!
!     DIGITAL assumes no responsibility for the use or reliability
!     of  its  software  on  equipment  which  is  not supplied by
!     DIGITAL.
!

!++
! FACILITY: TKB-20
!
! ABSTRACT:
!
!
! THIS MODULE WRITES THE TASK FILE, IN RSX-11M VERSION 3 FORMAT.
!
!
! ENVIRONMENT: TOPS-20 USER MODE
!
! AUTHOR: J. SAUTER, CREATION DATE: 14-MAR-78
!
! MODIFIED BY:
!
!	Scott G. Robinson, 3-DEC-79 : Version X2.0
!	- Ensure DECnet-10 Compatibility
!
!	, : VERSION
! 01	-
!--

!<BLF/PAGE>

!
! TABLE OF CONTENTS:
!

FORWARD ROUTINE
    GET11,					!GET A BYTE FROM PDP-11 CORE
    WTSK : NOVALUE;				!WRITE TASK FILE

!
! INCLUDE FILES
!

LIBRARY 'TKBLIB';

!REQUIRE 'BLOCKH.REQ';				!PREPARE TO DEFINE STORAGE BLOCKS
!REQUIRE 'FILE.REQ';				!FILE DATA BLOCK
!REQUIRE 'FILSW.REQ';				!SWITCH STORAGE BLOCK
!REQUIRE 'BLOCKT.REQ';				!END OF STORAGE BLOCK DEFINITIONS

!
! MACROS:
!
!	NONE
!
! EQUATED SYMBOLS:
!

LITERAL
    DEBUG = 0;

!
! OWN STORAGE:
!
!	NONE
!
! EXTERNAL REFERENCES:
!

EXTERNAL ROUTINE
    ERRMSG : NOVALUE,				!TYPE AN ERROR MESSAGE
    ERROR : NOVALUE,				!SIGNAL AN INTERNAL ERROR
    OUTNUM : NOVALUE,				!WRITE A NUMBER ON A FILE
    OUTPUT : NOVALUE;				!WRITE ON A FILE

ROUTINE GET11 (CORE_IMAGE, CORE_SIZE, ADDRESS) = 	!GET A BYTE FROM PDP-11 CORE

!++
! FUNCTIONAL DESCRIPTION:
!
!
!	ROUTINE TO GET A BYTE OF DATA FROM SIMUALTED PDP-11 CORE
!
!
! FORMAL PARAMETERS:
!
!	CORE_IMAGE - SIMULATED PDP-11 MEMORY
!	CORE_SIZE - LENGTH OF SIMULATED PDP-11 MEMORY
!	ADDRESS - PLACE TO GET THE BYTE FROM
!
! IMPLICIT INPUTS:
!
!	NONE
!
! IMPLICIT OUTPUTS:
!
!	NONE
!
! ROUTINE VALUE:
!
!	THE BYTE FROM THE SPECIFIED LOCATION
!
! SIDE EFFECTS
!
!	NONE
!
!--

    BEGIN

    BIND
	ROUTINE_NAME = UPLIT (%ASCIZ'GET11');

    MAP
	CORE_IMAGE : REF VECTOR;

    LOCAL
	ADDR1,
	ADDR2,
	BYTE_VAL,
	CORE_WORD;

    IF (.ADDRESS GEQU .CORE_SIZE)
    THEN
	BEGIN
	ERROR (UPLIT (%ASCIZ'ADDRESS OUT OF RANGE - GET11'));
	0;
	END
    ELSE
	BEGIN
	ADDR1 = .ADDRESS/4;
	ADDR2 = .ADDRESS MOD 4;
	CORE_WORD = .CORE_IMAGE [.ADDR1];
	BYTE_VAL = .CORE_WORD<(CASE .ADDR2 FROM 0 TO 3 OF
		SET
		[0] : 18;
		[1] : 26;
		[2] : 0;
		[3] : 8;
		TES), 8>;
	.BYTE_VAL
	END

    END;					!OF GET11

GLOBAL ROUTINE WTSK (CORE_IMAGE, CORE_SIZE, LBL_IMAGE, LBL_SIZE, FILE_PTR, CHAN) : NOVALUE =
						!WRITE CORE IMAGE

!++
! FUNCTIONAL DESCRIPTION:
!
!
!	ROUTINE TO WRITE OUT THE TASK FILE
!
!
! FORMAL PARAMETERS:
!
!	CORE_IMAGE - SIMULATED PDP-11 MEMORY
!	CORE_SIZE - LENGTH OF SIMULATED PDP-11 MEMORY
!	LBL_IMAGE - POINTER TO THE TASK'S LABEL BLOCKS
!	LBL_SIZE - LENGTH OF THE LABEL, IN BYTES
!	FILE_PTR - POINTER TO THE FILE ON WHICH TO WRITE THE CORE IMAGE
!	CHAN - CHANNEL ON WHICH THE FILE IS OPEN, IN BINARY MODE
!
! IMPLICIT INPUTS:
!
!	NONE
!
! IMPLICIT OUTPUTS:
!
!	NONE
!
! ROUTINE VALUE:
!
!	NONE
!
! SIDE EFFECTS
!
!	WRITES ON THE SPECIFIED FILE
!
!--

    BEGIN

    BIND
	ROUTINE_NAME = UPLIT (%ASCIZ'WTSK');

    MAP
	CORE_IMAGE : REF VECTOR,
	LBL_IMAGE : REF VECTOR;

    LOCAL
	BYTE_VAL;

!
! FIRST WRITE OUT THE LABEL BLOCKS
!

    INCR COUNTER FROM 0 TO .LBL_SIZE - 1 DO
	BEGIN
	BYTE_VAL = .LBL_IMAGE [.COUNTER];
	OUTPUT (.CHAN, .BYTE_VAL);
	END;

!
! NOW WRITE OUT THE CORE IMAGE
!

    INCR COUNTER FROM 0 TO .CORE_SIZE - 1 DO
	BEGIN
	BYTE_VAL = GET11 (.CORE_IMAGE, .CORE_SIZE, .COUNTER);
	OUTPUT (.CHAN, .BYTE_VAL);
	END;

    END;					!OF WTSK

END

ELUDOM
! Local Modes:
! Comment Start:!
! Comment Column:36
! Mode:Fundamental
! Auto Save Mode:2
! End: