-#define PF_RCOLL 0x01
-#define PF_WCOLL 0x02
-#define PF_PKT 0x08 /* packet mode */
-#define PF_STOPPED 0x10 /* user told stopped */
-#define PF_REMOTE 0x20 /* remote and flow controlled input */
-#define PF_NOSTOP 0x40
-#define PF_UCNTL 0x80 /* user control mode */
+#define PF_RCOLL 0x0001
+#define PF_WCOLL 0x0002
+#define PF_PKT 0x0008 /* packet mode */
+#define PF_STOPPED 0x0010 /* user told stopped */
+#define PF_REMOTE 0x0020 /* remote and flow controlled input */
+#define PF_NOSTOP 0x0040
+#define PF_UCNTL 0x0080 /* user control mode */
+#define PF_COPEN 0x0100 /* master open */
+#define PF_SOPEN 0x0200 /* slave open */