Added comments to cbm.h.

load/save returns oserror code.
Added open/close and read (which is not tested yet).


git-svn-id: svn://svn.cc65.org/cc65/trunk@637 b7a2c559-68d2-44c3-8de9-860c34a00d81

libsrc/cbm/cbm_open.c

@@ -0,0 +1,16 @@
+/*
+ * Marc 'BlackJack' Rintsch, 18.03.2001
+ *
+ * unsigned char cbm_open(unsigned char lfn, unsigned char device,
+ *                        unsigned char sec_addr, const char* name)
+ */
+ 
+#include <cbm.h>
+
+unsigned char cbm_open(unsigned char lfn, unsigned char device,
+                       unsigned char sec_addr, const char* name)
+{
+    cbm_k_setlfs(lfn, device, sec_addr);
+    cbm_k_setnam(name);
+    return cbm_k_open();
+}