2007-01-11 16:25:52 -05:00
|
|
|
subroutine packtext(msg,nc1,nc2,nc3)
|
|
|
|
|
|
|
|
|
|
parameter (MASK28=2**28 - 1)
|
|
|
|
|
character*13 msg
|
|
|
|
|
character*44 c
|
|
|
|
|
data c/'0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ +-./?'/
|
|
|
|
|
|
|
|
|
|
nc1=0
|
|
|
|
|
nc2=0
|
|
|
|
|
nc3=0
|
|
|
|
|
|
|
|
|
|
do i=1,5 !First 5 characters in nc1
|
|
|
|
|
do j=1,44 !Get character code
|
|
|
|
|
if(msg(i:i).eq.c(j:j)) go to 10
|
|
|
|
|
enddo
|
|
|
|
|
j=37
|
|
|
|
|
10 j=j-1 !Codes should start at zero
|
|
|
|
|
nc1=42*nc1 + j
|
|
|
|
|
enddo
|
|
|
|
|
|
|
|
|
|
do i=6,10 !Characters 6-10 in nc2
|
|
|
|
|
do j=1,44 !Get character code
|
|
|
|
|
if(msg(i:i).eq.c(j:j)) go to 20
|
|
|
|
|
enddo
|
|
|
|
|
j=37
|
|
|
|
|
20 j=j-1 !Codes should start at zero
|
|
|
|
|
nc2=42*nc2 + j
|
|
|
|
|
enddo
|
|
|
|
|
|
|
|
|
|
do i=11,13 !Characters 11-13 in nc3
|
|
|
|
|
do j=1,44 !Get character code
|
|
|
|
|
if(msg(i:i).eq.c(j:j)) go to 30
|
|
|
|
|
enddo
|
|
|
|
|
j=37
|
|
|
|
|
30 j=j-1 !Codes should start at zero
|
|
|
|
|
nc3=42*nc3 + j
|
|
|
|
|
enddo
|
|
|
|
|
|
|
|
|
|
C We now have used 17 bits in nc3. Must move one each to nc1 and nc2.
|
|
|
|
|
nc1=nc1+nc1
|
|
|
|
|
if(iand(nc3,32768).ne.0) nc1=nc1+1
|
|
|
|
|
nc2=nc2+nc2
|
|
|
|
|
if(iand(nc3,65536).ne.0) nc2=nc2+1
|
|
|
|
|
nc3=iand(nc3,32767)
|
|
|
|
|
|
|
|
|
|
return
|
|
|
|
|
end
|
