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1 files changed, 76 insertions, 0 deletions

diff --git a/pkg/images/tv/display/iisopn.x b/pkg/images/tv/display/iisopn.x
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+++ b/pkg/images/tv/display/iisopn.x
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+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include	<mach.h>
+include <knet.h>
+include "zdisplay.h"
+include "iis.h"
+
+# ----------------------------------------------------------------------
+# MODIFIED VERSION OF IISOPN.X FOR IMTOOL -- DO NOT DELETE.
+# Referenced by the Sun/IRAF special file list: see hlib$mkpkg.sf.
+# ----------------------------------------------------------------------
+
+# IISOPN -- Open IIS display.
+
+procedure iisopn (devinfo, mode, chan)
+
+char	devinfo[ARB]		# device info for zopen (packed)
+int	mode			# access mode
+int	chan[ARB]		# receives IIS descriptor
+
+int	delim
+char	resource[SZ_FNAME]
+char	node[SZ_FNAME]
+bool	first_time
+data	first_time /true/
+int	ki_gnode(), strncmp()
+include	"iis.com"
+include	"imd.com"
+define	quit_ 91
+
+begin
+	if (first_time) {
+	    iisnopen = 0
+	    iis_version = 0
+	    first_time = false
+	}
+
+	# We permit multiple opens but only open the physical device once.
+	if (iisnopen == 0) {
+	    call zopngd (devinfo, mode, iischan)
+
+	    # Initialize imd_gcur.
+	    call strcpy (devinfo, imd_devinfo, SZ_LINE)
+	    imd_mode = mode
+	    imd_magic = -1
+	}
+
+	if (iischan != ERR) {
+	    iisnopen = iisnopen + 1
+	    chan[1] = FRTOCHAN(iisframe)
+
+	    # The following code is DEVICE DEPENDENT (horrible kludge, but
+	    # it simplifies things and this is throw away code).
+
+	    # Byte pack i/o if the device is on a remote node since the i/o
+	    # bandwidth is the limiting factor; do not bytepack if on local
+	    # node since cpu time is the limiting factor.
+
+	    call strupk (devinfo, resource, SZ_FNAME)
+	    packit = (ki_gnode (resource, node, delim) != 0)
+	    if (!packit)
+		packit = (strncmp (resource[delim+1], "imt", 3) == 0)
+
+	    # Enable byte swapping if the device is byte swapped but the
+	    # local host is not (assumes that if there is an IIS it is on
+	    # a byte swapped VAX - this should be done in graphcap instead).
+
+	    swap_bytes = (strncmp (resource[delim+1], "iis", 3) == 0 &&
+		BYTE_SWAP2 == NO)
+
+	    # Initialize zoom.
+	    call iiszm (1, 0, 0)
+
+	} else
+	    chan[1] = ERR
+end