1 files changed, 38 insertions, 0 deletions
diff --git a/pkg/images/tv/display/iiszm.x b/pkg/images/tv/display/iiszm.x
new file mode 100644
index 00000000..d207f47a
--- /dev/null
+++ b/pkg/images/tv/display/iiszm.x
@@ -0,0 +1,38 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include <mach.h>
+include "zdisplay.h"
+include "iis.h"
+
+# IISZM -- Zoom IIS window.
+
+procedure iiszm (zfactor, x, y)
+
+int	zfactor, x, y
+short	zoom[LEN_ZOOM]
+int	status
+
+begin
+	call iishdr (IWRITE+VRETRACE, LEN_ZOOM, ZOOM, ADVXONTC, 0, 0, 0)
+	zoom[1] = zfactor - 1
+	zoom[2] = x / MCXSCALE
+	zoom[3] = y / MCYSCALE
+	call iisio (zoom, LEN_ZOOM * SZB_CHAR, status)
+end
+
+
+# IISRM -- Roam IIS display.
+
+procedure iisrm (zfactor)
+
+int	zfactor
+int	status, xcur, ycur
+int	and()
+
+begin
+	status = 0
+	while (status != EOF && and (status, PUSH) == 0) {
+	    call iisrcr (status, xcur, ycur)
+	    call iiszm (zfactor, xcur, ycur)
+	}
+end