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lngsrc/lnkcst.mac
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TITLE LNKCST - LOAD CUSTOMER LINK ITEMS MODULE FOR LINK
SUBTTL D.M.NIXON/DMN/JBC/JNG/DZN/PAH/HD/RJF 5-Feb-88
;COPYRIGHT (c) DIGITAL EQUIPMENT CORPORATION 1973,1986,1988.
; ALL RIGHTS RESERVED.
;
;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.
SEARCH LNKPAR,LNKLOW,MACTEN,UUOSYM,SCNMAC
SALL
ENTRY LNKCST
EXTERN LNKSCN,LNKLOD,LNKCOR,LNKWLD,LNKLOG
CUSTVR==0 ;CUSTOMER VERSION
DECVER==5 ;DEC VERSION
DECMVR==1 ;DEC MINOR VERSION
DECEVR==2417 ;DEC EDIT VERSION
SEGMENT
;LOCAL ACC DEFINITIONS
INTERN R,RB,WC
R=R1 ;CURRENT RELOCATION COUNTER
RB=R+1 ;RELOCATION BYTE WORD
WC=R3 ;WORD COUNT
SUBTTL REVISION HISTORY
;START OF VERSION 2
;START OF VERSION 2B
;363 UPDATE MINOR VERSION #
;START OF VERSION 2C
;465 Redo entire module, remove T.100.
;START OF VERSION 3A
;560 Release on both TOPS-10 and TOPS-20 as LINK version 3A(560)
;START OF VERSION 4
;731 SEARCH MACTEN,UUOSYM
;765 Release on both TOPS-10 and TOPS-20 as LINK version 4(765)
;START OF VERSION 4A
;1174 Label and clean up all error messages.
;1217 Clean up the listings for release.
;1220 Release on both TOPS-10 and TOPS-20 as version 4A(1220).
;Start of Version 5.1
;2026 Update copyright notice.
;Start of Version 6.0
;2403 New corporate Copywrite statememt.
;2417 Update Copywrite statememt to 1988.
SUBTTL DISPATCH TABLES FOR CUSTOMER TYPES
;CUSTOMERS HAVE THE FOLLOWING TYPES RESERVED TO THEM:
; 40 - 77
; 402 - 677
; 2000 - 3777
;WHERE 40-577 SHOULD BE USED FOR THOSE TYPES INVOLVING RADIX50,
;ONE OR TWO SEGMENTS, OR SINGLE LENGTH SYMBOLS (OLD STYLE BLOCKS),
;600-677 SHOULD BE USED FOR CUSTOMER SPECIAL FILE TYPES, AND
;2000-3777 SHOULD BE USED FOR BLOCK TYPES INVOLVING SIXBIT,
;EXTENDED SYMBOLS, OR MULTIPLE SEGMENTS (NEW BLOCK TYPES)
;ON THE OTHER HAND, CUSTOMERS CAN DO ANYTHING THEY PLEASE.
;DISPATCH FOR TYPES 40-77
CDSTB1: LITYPE (40,41)
CDSTL1==.-CDSTB1
;DISPATCH FOR TYPES 402-677
CDSTB2: LITYPE (402,403)
CDSTL2==.-CDSTB2
IFN .NWBLK,<
;DISPATCH FOR TYPES 2000-3777
CDSTB3: LITYPE (2000,2001)
CDSTL3==.-CDSTB3
> ;END OF IFN .NWBLK
SALL
SUBTTL DISPATCH TO LINK ITEM TYPE
;ENTER WITH LINK ITEM TYPE IN T1
;ALSO IN W1
LNKCST: CAIL T1,40 ;IN FIRST RANGE?
CAIL T1,40+2*CDSTL1 ;..
SKIPA ;NO, CHECK OTHER RANGES
JRST CSTYP1 ;YES, GO HANDLE
CAIL T1,402 ;HOW ABOUT 2ND RANGE?
CAIL T1,402+2*CDSTL2 ;..
IFE .NWBLK,<
JRST E$$IRB## ;[1174] NEW BLOCK TYPES NOT IMPLEMENTED
> ;END IFE .NWBLK
IFN .NWBLK,<
SKIPA ;NO, MUST BE 3RD RANGE
JRST CSTYP2 ;OK, GO DISPATCH
CAIL T1,2000 ;IN NEW CUSTOMER RANGE?
CAIL T1,2000+2*CDSTL3;..
JRST E$$IRB## ;[1174] SNH,GIVE ERROR MESSAGE
HRREI T2,-<2000+CDSTL3>(T1) ;OFFSET TYPE
JUMPGE T2,.+2 ;IF NEGATIVE, USE RHS
SKIPA T2,CDSTB3+CDSTL3(T2) ;USE RIGHT HALF
HLRZ T2,CDSTB3(T2) ;USE LEFT HALF
JRST (T2) ;DISPATCH
> ;END IFN .NWBLK
CSTYP2: HRREI T2,-<402+CDSTL2>(T1) ;OFFSET TYPE
JUMPGE T2,.+2 ;IF NEGATIVE, USE RHS
SKIPA T2,CDSTB2+CDSTL2(T2) ;USE RIGHT HALF
HLRZ T2,CDSTB2(T2) ;USE LEFT HALF
JRST (T2) ;DISPATCH
CSTYP1: HRREI T2,-<2000+CDSTL1>(T1) ;OFFSET TYPE
JUMPGE T2,.+2 ;IF NEGATIVE, USE RHS
SKIPA T2,CDSTB1+CDSTL1(T2) ;USE RIGHT HALF
HLRZ T2,CDSTB1(T2) ;USE LEFT HALF
JRST (T2) ;DISPATCH
SUBTTL THE END
CSTLIT: END