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chapter-instr-glance-16bit-arithmetic.tex
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chapter-instr-glance-16bit-arithmetic.tex
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\section{16-Bit Arithmetic}
\vspace*{0.7ex} % ensure this table starts at the same height as the one on the odd page
\begin{minipage}{\textwidth}
\begin{instrtable}
\begin{instruction}{ADC HL,rr}
\Symbol{\SymADC{HL}{rr}}
\FlagsADCrr
\OpCode{11}{101}{101}
\Hex{ED}{2}
\Cycles{4}{15}
\Comment{
\tt
\multirow{4}{*}{
\begin{tabular}{ll}
rr & \OCT{rr} \\
\hline
BC & 00 \\
DE & 01 \\
HL & 10 \\
SP & 11 \\
\end{tabular}
}
}
\SkipToOpCode
\OpCode{01}{\OCT{rr}1}{010}
\Hex{..}{}
\end{instruction}
\begin{instruction}{SBC HL,rr}
\Symbol{\SymSBC{HL}{rr}}
\FlagsSBCrr
\OpCode{11}{101}{101}
\Hex{ED}{2}
\Cycles{4}{15}
\SkipToOpCode
\OpCode{01}{\OCT{rr}0}{010}
\Hex{..}{}
\end{instruction}
\begin{instruction}{ADD HL,rr}
\Symbol{\SymADD{HL}{rr}}
\FlagsADDrr
\OpCode{00}{\OCT{rr}1}{001}
\Hex{..}{1}
\Cycles{3}{11}
\end{instruction}
\begin{instruction}{ADD IX,pp}
\Symbol{\SymADD{IX}{pp}}
\FlagsADDrr
\OpCode{11}{011}{101}
\Hex{DD}{2}
\Cycles{4}{15}
\Comment{
\multirow{4}{*}{
\tt
\begin{tabular}{ll}
pp & \OCT{pp} \\
\hline
BC & 00 \\
DE & 01 \\
IX & 10 \\
SP & 11 \\
\end{tabular}
}
}
\SkipToOpCode
\OpCode{00}{\OCT{pp}1}{001}
\Hex{..}{}
\end{instruction}
\begin{instruction}{ADD IY,qq}
\Symbol{\SymADD{IY}{qq}}
\FlagsADDrr
\OpCode{11}{111}{101}
\Hex{FD}{2}
\Cycles{4}{15}
\SkipToOpCode
\OpCode{00}{\OCT{qq}1}{001}
\Hex{..}{}
\end{instruction}
\begin{instruction}{INC rr}
\Symbol{\SymINC{rr}}
\FlagsINCrr
\OpCode{00}{\OCT{rr}0}{011}
\Hex{..}{1}
\Cycles{1}{6}
\end{instruction}
\begin{instruction}{INC IX}
\Symbol{\SymINC{IX}}
\FlagsINCrr
\OpCode{11}{011}{101}
\Hex{DD}{2}
\Cycles{2}{10}
\Comment{
\multirow{4}{*}{
\tt
\begin{tabular}{ll}
qq & \OCT{qq} \\
\hline
BC & 00 \\
DE & 01 \\
IY & 10 \\
SP & 11 \\
\end{tabular}
}
}
\SkipToOpCode
\OpCode{00}{100}{011}
\Hex{23}{}
\end{instruction}
\begin{instruction}{INC IY}
\Symbol{\SymINC{IY}}
\FlagsINCrr
\OpCode{11}{111}{101}
\Hex{FD}{2}
\Cycles{2}{10}
\SkipToOpCode
\OpCode{00}{100}{011}
\Hex{23}{}
\end{instruction}
\begin{instruction}{DEC rr}
\Symbol{\SymDEC{rr}}
\FlagsDECrr
\OpCode{00}{\OCT{rr}1}{011}
\Hex{..}{1}
\Cycles{1}{6}
\end{instruction}
\begin{instruction}{DEC IX}
\Symbol{\SymDEC{IX}}
\FlagsDECrr
\OpCode{11}{011}{101}
\Hex{DD}{2}
\Cycles{2}{10}
\SkipToOpCode
\OpCode{00}{101}{011}
\Hex{2B}{}
\end{instruction}
\begin{lastinstruction}{DEC IY}
\Symbol{\SymDEC{IY}}
\FlagsDECrr
\OpCode{11}{111}{101}
\Hex{FD}{2}
\Cycles{2}{10}
\SkipToOpCode
\OpCode{00}{101}{011}
\Hex{2B}{}
\end{lastinstruction}
\end{instrtable}
\begin{notestable}
\NoteItem{\See{1}Flag is set by carry from bit 15}
\NoteItem{\See{2}Flag is set by carry from bit 11 (half carry in high byte)}
\end{notestable}
\end{minipage}