Update cbm510.sgml

There is just one CIA but it's not called "CIA1"...

diff --git a/doc/cbm510.sgml b/doc/cbm510.sgml
index 1ec0e05d411a25f5c6397db05a9486f4d684560e..012a7b596db58063334a19dbc088f26c6471e5f8 100644 (file)
--- a/doc/cbm510.sgml
+++ b/doc/cbm510.sgml
@@ -244,7 +244,7 @@ The default drivers, <tt/mouse_stddrv (mouse_static_stddrv)/, point to <tt/cbm51
 
 <sect1>Realtime clock<p>
 
-The realtime clock functions use the CIA1 TOD clock. As that clock only stores
+The realtime clock functions use the CIA2 TOD clock. As that clock only stores
 the time but not the date, the date set by <tt/clock_settime()/ is simply stored
 inside the C library for retrieval in the same program via <tt/clock_gettime()/.