fix register clobbering in ps2 calls

1 files changed, 1 insertions, 1 deletions

diff --git a/vbox.h b/vbox.h
index d47c01a..e2eb0ec 100644
--- a/vbox.h
+++ b/vbox.h
@@ -60,7 +60,7 @@ static void vbox_send_request(uint16_t iobase, uint32_t addr);
 	"out dx, eax" \
 	"pop eax" \
 	__parm [dx] [bx ax] \
-	__modify [dx]
+	__modify []
 
 /** Finds the VirtualBox PCI device and reads the current IO base.
   * @returns 0 if the device was found. */