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74 lines
2.7 KiB
Plaintext
74 lines
2.7 KiB
Plaintext
.TITLE XQ_GET_CNTRL_FLD
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;-----------------------------------------------------------------------
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;
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; D I S C L A I M E R N O T I C E
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; ------------------- -----------
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;
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; This document and/or portions of the material and data furnished
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; herewith, was developed under sponsorship of the U. S. Government.
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; Neither the U.S. nor the U.S.D.O.E., nor the Leland Stanford Junior
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; University, nor their employees, nor their respective contractors,
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; subcontractors, or their employees, makes any warranty, express or
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; implied, or assumes any liability or responsibility for accuracy,
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; completeness or usefulness of any information, apparatus, product
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; or process disclosed, or represents that its use will not infringe
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; privately-owned rights. Mention of any product, its manufacturer,
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; or suppliers shall not, nor is it intended to, imply approval, dis-
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; approval, or fitness for any particular use. The U. S. and the
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; University at all times retain the right to use and disseminate same
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; for any purpose whatsoever. Such distribution shall be made by the
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; National Energy Software Center at the Argonne National Laboratory
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; and only subject to the distributee furnishing satisfactory proof
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; that he has a valid license from the Intel Corporation in effect.
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;
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;-----------------------------------------------------------------------
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;
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; This USEROPEN procedure is used by the XQIO package to
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; obtain access to SOS and Wylbur-style lines numbers in
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; source files. This code has been stolen almost verbatim
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; from the VAX-11 FORTRAN User's Guide, section 3.5.9.
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;
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;-----------------------------------------------------------------------
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;
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; R E V I S I O N H I S T O R Y
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;
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;
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; 04FEB82 Alex Hunter 1. Original version.
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;
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;-----------------------------------------------------------------------
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$FABDEF ; Define RAB and FAB offsets.
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$RABDEF
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; Define argument list offsets.
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FABOFF=4 ; 1st argument is FAB.
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RABOFF=8 ; 2nd argument is RAB.
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LUNOFF=12 ; 3rd argument is logical unit.
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.ENTRY XQ_GET_CNTRL_FLD, ^M<R2>
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MOVL FABOFF(AP),R0 ; Load FAB address to R0.
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MOVL RABOFF(AP),R1 ; Load RAB address to R1.
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MOVL @LUNOFF(AP),R2 ; Logical unit number to R2.
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; Set size of header field into FAB.
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MOVB #2,FAB$B_FSZ(R0)
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; Set address into RAB.
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MOVAW W_LINE_NUMBER[R2],RAB$L_RHB(R1)
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$OPEN FAB=@FABOFF(AP) ; Perform the OPEN.
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BLBC R0,10$ ; Return immediately if error.
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$CONNECT RAB=@RABOFF(AP); Connect stream to file.
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10$: RET ; Status value is from the OPEN or
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; the CONNECT.
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.PSECT XQ_LINE_SEQS,PIC,OVR,REL,GBL,SHR,NOEXE,RD,WRT,LONG
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W_LINE_NUMBER:
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.BLKW 100
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.END
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