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subroutine m70opn (FCB, error)
C
c Routine to open model 70
c
c Error is returned as:
c -1 = display open
c 0 = OK
c 1 = timeout
c 2 = invalid or non-responding device
c >= 1000 : machine dependent error number
c
integer fcb(*), error
include 'fcbu.inc'
C
integer*4 sys$assign, chan, status
integer*2 chan2(2), name2(2), stat(2)
byte name1(4)
character*4 m70
equivalence (chan, chan2), (status, stat(1))
equivalence (name1, name2), (name1, m70)
C
name2(1) = fcb(fcb_u_m70_name)
name2(2) = fcb(fcb_u_m70_name+1)
chan2(1) = fcb(fcb_u_m70_chan)
chan2(2) = fcb(fcb_u_m70_chan+1)
c
if (chan.eq.0) then
status = sys$assign ('_'//m70//':', chan,,)
if (status) then
fcb(fcb_u_m70_chan) = chan2(1)
fcb(fcb_u_m70_chan+1) = chan2(2)
error = 0
else
error = 1000 + stat(1)
endif
else
error = -1
endif
c
return
end
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