51 lines
1.3 KiB
Fortran
51 lines
1.3 KiB
Fortran
program jt4code
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! Provides examples of message packing, bit and symbol ordering,
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! convolutional encoding, and other necessary details of the JT4
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! protocol.
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use jt4
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use packjt
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character*22 msg,decoded,bad*1,msgtype*13
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integer i4tone(206)
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include 'testmsg.f90'
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nargs=iargc()
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if(nargs.ne.1) then
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print*,'Usage: jt4code "message"'
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print*,' jt4code -t'
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go to 999
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endif
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call getarg(1,msg)
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nmsg=1
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if(msg(1:2).eq."-t") nmsg=NTEST
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write(*,1010)
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1010 format(" Message Decoded Err? Type"/ &
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74("-"))
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do imsg=1,nmsg
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if(nmsg.gt.1) msg=testmsg(imsg)
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call fmtmsg(msg,iz) !To upper case, collapse multiple blanks
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ichk=0
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call gen4(msg,ichk,decoded,i4tone,itype)
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msgtype=""
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if(itype.eq.1) msgtype="Std Msg"
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if(itype.eq.2) msgtype="Type 1 prefix"
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if(itype.eq.3) msgtype="Type 1 suffix"
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if(itype.eq.4) msgtype="Type 2 prefix"
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if(itype.eq.5) msgtype="Type 2 suffix"
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if(itype.eq.6) msgtype="Free text"
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bad=" "
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if(decoded.ne.msg) bad="*"
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write(*,1020) imsg,msg,decoded,bad,itype,msgtype
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1020 format(i2,'.',2x,a22,2x,a22,3x,a1,i3,": ",a13)
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enddo
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if(nmsg.eq.1) write(*,1030) i4tone
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1030 format(/'Channel symbols'/(30i2))
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999 end program jt4code
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