mirror of https://github.com/saitohirga/WSJT-X.git
46 lines
1.2 KiB
Fortran
46 lines
1.2 KiB
Fortran
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subroutine genmsk_short(msg,msgsent,itone,itype)
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use hashing
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character*22 msg0,msg,msgsent
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character*3 crpt,rpt(0:7)
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integer itone(37)
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integer b11(11)
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integer golay_15_3(0:7)
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data b11/1,1,1,0,0,0,1,0,0,1,0/ !Barker 11 code
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data rpt /'26 ','27 ','28 ','R26','R27','R28','RRR','73 '/
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data golay_15_3/00000,07025,11704,14025,19164,20909,26468,31765/
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itype=-1
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msgsent='*** bad message ***'
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itone=0
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i1=index(msg,'>')
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if(i1.lt.9) go to 900
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crpt=msg(i1+2:i1+5)
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do i=0,7
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if(crpt.eq.rpt(i)) go to 10
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enddo
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go to 900
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10 itone(1:11)=b11
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irpt=i
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ncodeword=golay_15_3(irpt) !Save the 15-bit codeword for report
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do i=26,12,-1 !Insert codeword into itone array
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itone(i)=iand(ncodeword,1)
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ncodeword=ncodeword/2
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enddo
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call hash(msg(2:i1-1),i1-2,ihash)
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ihash=iand(ihash,1023) !10-bit hash for the two callsigns
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n=ihash
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do i=36,27,-1
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itone(i)=iand(n,1)
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n=n/2
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enddo
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n=count(itone(1:36).eq.0)
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itone(37)=1
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if(iand(n,1).eq.1) itone(37)=0
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msgsent=msg
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itype=7
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900 return
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end subroutine genmsk_short
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