Trailing-Edge
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PDP-10 Archives
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bb-bt99e-bb
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lnkfio.c07
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REP 2/1 ;07C1
SUBTTL D.M.NIXON/DMN/JLd/JBC/JNG/PAH/DZN/PY 6-Jan-83
WIT
SUBTTL D.M.NIXON/DMN/JLd/JBC/JNG/PAH/DZN/PY 14-Mar-83
REP 37/1 ;07C2
DECEVR==2026 ;DEC EDIT VERSION
WIT
DECEVR==2034 ;DEC EDIT VERSION
INS 69/2 ;07C3
;1547 Fix all cases where .REL bytesize not 36 bits.
INS 72/2 ;07C4
;2034 Use .IODPR instead of .IODMP in DVOPN. on TOPS-20
REP 15/4 ;07C5
CAIN T2,.IODMP
WIT
;**;[2034] Replace 1 Line at DVOPN.+6 Lines PY 17-Feb-83
CAIN T2,.IODPR ;[2034]
REP 64/8 ;07C6
MOVE T2,[6,,.FBCRE] ;[1500] LOOK AT WRDS 5-12 OF FDB
MOVEI T3,(P) ;[1500] PTR TO VERY TEMPORARY STORAGE
ADJSP P,6 ;[1500] RESERVE SIX WORDS FOR FDB DATA
GTFDB ;[1500] GET FILE DATA BLOCK
ERJMP [ ADJSP P,-6 ;[1500] OOPS, RESTORE STACK
POP P,T3 ;[1500] AND T3
POPJ P, ] ;[1500] NONSKIP ERROR RETURN
LDB T2,[POINT 6,.FBBYV-5(T3),11]
;[1500] GET BYTESIZE DATA
MOVEI T1,^D36 ;[1500] DIVIDE 36
IDIV T1,T2 ;[1500] BY THE BYTESIZE
MOVE T2,.FBSIZ-5(T3) ;[1500] FETCH FILE SIZE IN BYTES
CAIN T1,1 ;[1500] NORMAL BINARY DATA?
JRST DVLKP1 ;[1500] YES, DON'T BOTHER CALCULATING
EXCH T1,T2 ;[1500] T1:BYTECOUNT,T2:BYTES/WORD
IDIV T1,T2 ;[1500] FINAL WORD COUNT FOR FILE
EXCH T1,T2 ;[1500] GET IT TO T2
DVLKP1: MOVEM T2,RFLEN ;[1500] STORE WORD COUNT
MOVE T2,.FBCRE-5(T3) ;[1500] ALSO PICK UP CREATION DATE
ADJSP P,-6 ;[2014] RESTORE STACK
DVLKP2: MOVE T3,IO.CHN ;[2014] AND PUT IT IN THE IO BLOCK
MOVE T3,IO.PTR(T3) ;[1500] FOR MAP FILE
MOVEM T2,I.PRV(T3) ;[1500] ...
POP P,T3 ; PUT REGISTER CONTENTS BACK
WIT
;**;[1547] Replace at NFSLKP+19 Lines PAH 14-Mar-83
MOVE T2,[6,,.FBCRE] ;[1547] LOOK AT WRDS 5-12 OF FDB
MOVEI T3,.FBCRE(P) ;[1547] PTR TO VERY TEMPORARY STORAGE
ADJSP P,6 ;[1547] SET IT ASIDE
GTFDB ;[1547] GET FILE DATA BLOCK
ERJMP [ ADJSP P,-6 ;[1547] RELEASE TEMP STORAGE
POP P,T3 ;[1547] AND T3
POPJ P, ] ;[1547] NONSKIP ERROR RETURN
MOVE T2,<.FBCRE-.FBCRE>(T3) ;[1547] PICK UP CREATION DATE
MOVE T1,IO.CHN ;[1547]
MOVE T1,IO.PTR(T1) ;[1547] SAVE THIS INFO
MOVEM T2,I.PRV(T1) ;[1547] FOR THE MAP FILE
;[1547] Now compute RFLEN, length of .REL file
MOVE T1,<.FBSIZ-.FBCRE>(T3) ;[1547]
LDB T3,[POINT 6,<.FBBYV-.FBCRE>(T3),11]
;[1547] GET BYTESIZE DATA
JUMPE T3,DVLKP2 ;[1547] BYTESIZE=WORD SIZE
CAILE T3,^D18 ;[1547] IF GREATER THAN 18
JRST DVLKP2 ;[1547] BYTESIZE=WORD SIZE
MOVEI T2,^D36 ;[1547] DIVIDE 36
IDIV T2,T3 ;[1547] BY THE BYTESIZE
IDIV T1,T2 ;[1547] FILE SIZE IN WORDS
SKIPE T2 ;[1547] EXTRA BYTES?
AOS T1 ;[1547] YES, ONE MORE WORD
DVLKP2: MOVEM T1,RFLEN ;[1547] STORE WORD COUNT
ADJSP P,-6 ;[1547] RELEASE TEMP STORAGE
POP P,T3 ;[1547] AND AC
REP 8/22 ;07C7
; MOVE IO.CHN CHAN #
WIT
; MOVEM AC,IO.CHN STORE CHANNEL # AWAY
SUM 197194