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0.8 is not backwards compatible

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This commit is contained in:
Jordan Sherer 2018-10-31 11:56:12 -04:00
parent 33446297fa
commit 8d28ea345a
4 changed files with 5 additions and 5 deletions
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2
lib/ft8/chkcrc12a.f90
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@ -16,7 +16,7 @@ subroutine chkcrc12a(decoded,nbadcrc)
i1Dec8BitBytes(10)=iand(i1Dec8BitBytes(10),128+64+32)
i1Dec8BitBytes(11)=0
icrc12=crc12(c_loc(i1Dec8BitBytes),11) !CRC12 computed from 75 msg bits
! icrc12=xor(icrc12, 41) ! TODO: jsherer - could change the crc here
icrc12=xor(icrc12, 42) ! TODO: jsherer - could change the crc here
nbadcrc=1
if(ncrc12.eq.icrc12) nbadcrc=0

4
lib/ft8/extractmessage174.f90
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@ -22,9 +22,9 @@ subroutine extractmessage174(decoded,msgreceived,ncrcflag)
i1Dec8BitBytes(10)=iand(i1Dec8BitBytes(10),128+64+32)
i1Dec8BitBytes(11)=0
icrc12=crc12(c_loc(i1Dec8BitBytes),11) !CRC12 computed from 75 msg bits
! icrc12=xor(icrc12, 41) ! TODO: jsherer - could change the crc here
icrc12=xor(icrc12, 42) ! TODO: jsherer - could change the crc here
if(ncrc12.eq.icrc12 .or. sum(decoded(57:87)).eq.0) then !### Kludge ###
if(ncrc12.eq.icrc12) then ! .or. sum(decoded(57:87)).eq.0) then !### Kludge ###
! CRC12 checks out --- unpack 72-bit message
do ibyte=1,12
itmp=0

2
lib/ft8/genft8.f90
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@ -38,7 +38,7 @@ subroutine genft8(msg,mygrid,bcontest,i3bit,msgsent,msgbits,itone)
i1Msg8BitBytes(10)=iand(i1Msg8BitBytes(10),128+64+32)
i1Msg8BitBytes(11)=0
icrc12=crc12(c_loc(i1Msg8BitBytes),11)
! icrc12=xor(icrc12, 41) ! TODO: jsherer - could change the crc here
icrc12=xor(icrc12, 42) ! TODO: jsherer - could change the crc here
! For reference, here's how to check the CRC
! i1Msg8BitBytes(10)=icrc12/256

2
lib/ft8/ldpcsim174.f90
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@ -91,7 +91,7 @@ allocate ( rxdata(N), llr(N) )
i1Msg8BitBytes(10:11)=0
checksum = crc12 (c_loc (i1Msg8BitBytes), 11)
! checksum = xor(checksum, 41) ! TODO: jsherer - could change the crc here
checksum = xor(checksum, 42) ! TODO: jsherer - could change the crc here
! For reference, the next 3 lines show how to check the CRC
i1Msg8BitBytes(10)=checksum/256
i1Msg8BitBytes(11)=iand (checksum,255)