Must open the command channel before writing to it.

git-svn-id: svn://svn.cc65.org/cc65/trunk@3943 b7a2c559-68d2-44c3-8de9-860c34a00d81

diff --git a/libsrc/cbm/sysrename.s b/libsrc/cbm/sysrename.s
index b4211f9b4850b0ab76bb636a96d7c9d7ab7b4f34..4b299d250e7fb588e5a28eacb4db5df942a0c4d0 100644 (file)
--- a/libsrc/cbm/sysrename.s
+++ b/libsrc/cbm/sysrename.s
@@ -7,7 +7,7 @@
         .export         __sysrename
 
         .import         fnparse, fnadd, fnparsename
-        .import         writefndiskcmd, closecmdchannel
+        .import         opencmdchannel, closecmdchannel, writefndiskcmd
         .import         popax
 
         .import         fncmd, fnunit
@@ -28,6 +28,10 @@
         jsr     fnparsename     ; Parse second filename
         bne     done
 
+        ldx     fnunit
+        jsr     opencmdchannel
+        bne     done
+
         lda     #'r'            ; Rename command
         sta     fncmd
         jsr     writefndiskcmd