appendix-cia6526-registers.tex

\chapter{6526 Complex Interface Adapter (CIA) Registers}

\section{CIA 6526 Registers}

\subsection*{CIA1 Registers}
\input{regtable_CIA1.C64}

\subsection*{CIA2 Registers}
\input{regtable_CIA2.C64}

\section{CIA 6526 Hypervisor Registers}

In addition to the standard CIA registers available on the C64 and C65, the MEGA65
provides an additional set of registers that are visible only when the system is in
Hypervisor Mode. These additional registers allow the internal state of the CIA to
be more fully extracted when freezing, thus allowing more programs to function
correctly after being frozen.  They are not visible when using the MEGA65 normally,
and can be safely ignored by programmers who are not programming the MEGA65 in
Hypervisor Mode.

\subsection*{CIA1 Hypervisor Registers}
\input{regtable_CIA1.MEGA65}

\subsection*{CIA2 Hypervisor Registers}
\input{regtable_CIA2.MEGA65}