chapter-instr-glance-general.tex

\section{General-Purpose Arithmetic and CPU Control}

\begin{minipage}{\textwidth}

\begin{instrtable}

	\begin{instruction}{DAA}
		\Symbol{}
			\FlagsDAA
			\OpCode{00}{100}{111}
			\Hex{27}{1}
			\Cycles{1}{4}
	\end{instruction}

	\begin{instruction}{CPL} 
		\Symbol{\SymCPL}
			\FlagsCPL
			\OpCode{00}{101}{111}
			\Hex{2F}{1}
			\Cycles{1}{4}
	\end{instruction}

	\begin{instruction}{NEG} 
		\Symbol{\SymNEG}
			\FlagsNEG
			\OpCode{11}{101}{101}
			\Hex{ED}{2}
			\Cycles{2}{8}
		\SkipToOpCode 
			\OpCode{01}{000}{100}
			\Hex{44}{}
	\end{instruction}

	\begin{instruction}{CCF\See{1}} 
		\Symbol{\SymCCF}
			\FlagsCCF
			\OpCode{00}{111}{111}
			\Hex{3F}{1}
			\Cycles{1}{4}
	\end{instruction}

	\begin{instruction}{SCF\See{1}} 
		\Symbol{\SymSCF}
			\FlagsSCF
			\OpCode{00}{110}{111}
			\Hex{37}{1}
			\Cycles{1}{4}
	\end{instruction}

	\begin{instruction}{NOP}
		\Symbol{}
			\FlagsNOP
			\OpCode{00}{000}{000}
			\Hex{00}{1}
			\Cycles{1}{4}
	\end{instruction}

	\begin{instruction}{HALT}
		\Symbol{}
			\FlagsHALT
			\OpCode{01}{110}{110}
			\Hex{76}{1}
			\Cycles{1}{4}
	\end{instruction}

	\begin{instruction}{DI\See{3}} 
		\Symbol{\SymDI[0]}
			\FlagsDI
			\OpCode{11}{110}{011}
			\Hex{F3}{1}
			\Cycles{1}{4}
		\SkipToSymbol
			\Symbol{\SymDI[1]}
	\end{instruction}

	\begin{instruction}{EI\See{3}} 
		\Symbol{\SymEI[0]}
			\FlagsEI
			\OpCode{11}{111}{011}
			\Hex{FB}{1}
			\Cycles{1}{4}
		\SkipToSymbol
			\Symbol{\SymEI[1]}
	\end{instruction}

	\begin{instruction}{IM 0\See{4}}
		\Symbol{}
			\FlagsIM
			\OpCode{11}{101}{101}
			\Hex{ED}{2}
			\Cycles{2}{8}
		\SkipToOpCode 
			\OpCode{01}{000}{110}
			\Hex{46}{}
	\end{instruction}

	\begin{instruction}{IM 1\See{4}}
		\Symbol{}
			\FlagsIM
			\OpCode{11}{101}{101}
			\Hex{ED}{2}
			\Cycles{2}{8}
		\SkipToOpCode 
			\OpCode{01}{010}{110}
			\Hex{56}{}
	\end{instruction}

	\begin{lastinstruction}{IM 2\See{4}}
		\Symbol{}
			\FlagsIM
			\OpCode{11}{101}{101}
			\Hex{ED}{2}
			\Cycles{2}{8}
		\SkipToOpCode 
			\OpCode{01}{011}{110}
			\Hex{5E}{}
	\end{lastinstruction}
	
\end{instrtable}

\begin{notestable}
	\NoteItem{\See{1}YF and XF are copied from register {\tt A}}
	\NoteItem{\See{2}Documentation says original value of CF is copied to HF, but my tests show that \FlagHF{} remains unchanged}
	\NoteItem{\See{3}No interrupts are accepted directly after {\tt EI} or {\tt DI}}
	\NoteItem{\See{4}This instruction has other undocumented opcodes}
\end{notestable}
	
\end{minipage}