diff --git a/doc/c64.sgml b/doc/c64.sgml index c89fb3c98..74b8f478c 100644 --- a/doc/c64.sgml +++ b/doc/c64.sgml @@ -41,10 +41,11 @@ config. Memory layout

cc65 generated programs with the default setup run with the I/O area and the -kernal ROM enabled. The BASIC ROM is disabled, which gives a usable memory -range of $0800 - $CFFF. This means that kernal entry points may -be called directly, but using the BASIC ROM is not possible without additional -code. +kernal ROM enabled (memory under the kernal may be used for graphics or as +extended memory - see the sections about graphics and extended memory +drivers). The BASIC ROM is disabled, which gives a usable memory range of +$0800 - $CFFF. This means that kernal entry points may be called +directly, but using the BASIC ROM is not possible without additional code. Special locations: