\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{Krrag}
\pdfinfo{
  /Title (hepia-risc-assembler.pdf)
  /Creator (Cheatography)
  /Author (Krrag)
  /Subject (HEPIA-RISC Assembler Cheat Sheet)
}

% Lengths and widths
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\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
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\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{FF0000}
\definecolor{LightBackground}{HTML}{FFEFEF}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{HEPIA-RISC Assembler Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Krrag} via \textcolor{DarkBackground}{\uline{cheatography.com/205339/cs/43813/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Krrag \\
  \uline{cheatography.com/krrag} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 8th July, 2024.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{x{1.14471 cm} x{3.83229 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Registers}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Register}} & {\bf{Purpose}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
R0 & Function Argument 1 \{\{nl\}\} return value \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
R1 & Function Argument 2 \tn 
% Row Count 5 (+ 1)
% Row 3
\SetRowColor{white}
R2 & Function Argument 3 \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
R3 & Function Argument 4 \tn 
% Row Count 7 (+ 1)
% Row 5
\SetRowColor{white}
R4 & Interrupt Vector Register \tn 
% Row Count 8 (+ 1)
% Row 6
\SetRowColor{LightBackground}
R5 & Interrupt Vector Register \{\{nl\}\} customasm macros \tn 
% Row Count 10 (+ 2)
% Row 7
\SetRowColor{white}
R6 & Systick \tn 
% Row Count 11 (+ 1)
% Row 8
\SetRowColor{LightBackground}
R7 & Register Link \tn 
% Row Count 12 (+ 1)
% Row 9
\SetRowColor{white}
R8 & General purpose \tn 
% Row Count 13 (+ 1)
% Row 10
\SetRowColor{LightBackground}
R9 & General purpose \tn 
% Row Count 14 (+ 1)
% Row 11
\SetRowColor{white}
R10 & General purpose \tn 
% Row Count 15 (+ 1)
% Row 12
\SetRowColor{LightBackground}
R11 & General purpose \tn 
% Row Count 16 (+ 1)
% Row 13
\SetRowColor{white}
R12 & General purpose \tn 
% Row Count 17 (+ 1)
% Row 14
\SetRowColor{LightBackground}
R13 & General purpose \tn 
% Row Count 18 (+ 1)
% Row 15
\SetRowColor{white}
R14 & General purpose \tn 
% Row Count 19 (+ 1)
% Row 16
\SetRowColor{LightBackground}
R15 & Stack Pointer \tn 
% Row Count 20 (+ 1)
% Row 17
\SetRowColor{white}
IRL & Interrupt Register Link \tn 
% Row Count 21 (+ 1)
% Row 18
\SetRowColor{LightBackground}
PC & Program Counter \tn 
% Row Count 22 (+ 1)
% Row 19
\SetRowColor{white}
SR & Status Register \tn 
% Row Count 23 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{IRL, PC \& SR are not addressable}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{4.4793 cm} p{0.4977 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Size}}  \tn
% Row 0
\SetRowColor{LightBackground}
Word (16-bits) & w \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
Byte (8-bits) & b \tn 
% Row Count 2 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{Instructions default to word if no size specified}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.69218 cm} x{3.28482 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Conditions}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Mnemonic}} & {\bf{Meaning}} \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
VC & No overflow \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
VS & Overflow \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
HS & Unsigned higher or same \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
LO & Unsigned lower \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
MI & Negative \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
PL & Positive \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
EQ & Equal \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
NE & Not equal \tn 
% Row Count 9 (+ 1)
% Row 9
\SetRowColor{white}
HI & Unsigned higher \tn 
% Row Count 10 (+ 1)
% Row 10
\SetRowColor{LightBackground}
GT & Signed greater \tn 
% Row Count 11 (+ 1)
% Row 11
\SetRowColor{white}
GE & Signed greater or equal \tn 
% Row Count 12 (+ 1)
% Row 12
\SetRowColor{LightBackground}
LT & Signed less \tn 
% Row Count 13 (+ 1)
% Row 13
\SetRowColor{white}
LE & Signed lower or equal \tn 
% Row Count 14 (+ 1)
% Row 14
\SetRowColor{LightBackground}
LS & Unsigned lower or equal \tn 
% Row Count 15 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.3731 cm} x{1.00694 cm} x{2.19696 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Function call and jumps}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Instruction}} & {\bf{Example}} & {\bf{Result}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
bl & bl func & R7 = PC, PC=func \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
bx & bx & PC = R7 \tn 
% Row Count 4 (+ 1)
% Row 3
\SetRowColor{white}
b & b \#-2 & PC = PC - 2 \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
b\{cond\} & bgt loop & PC = loop if z=0 and n=v \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{5.377cm}}{Both version of "b" can use labels or relative values}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.60195 cm} x{1.60195 cm} x{1.3731 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Load and store instructions}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Instruction}} & {\bf{Example}} & {\bf{Result}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
ldr & ldr r0 {[}r1{]}, \#3 & r0 = {[}0x4003{]} \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
str & str r0, {[}r1{]} & {[}0x4000{]} = r0 \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{5.377cm}}{Assume r1 = 0x4000 \{\{nl\}\} {[}value{]} indicates a data bus address}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.46464 cm} x{1.3731 cm} x{1.73926 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Arithmetic Instructions}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Instruction}} & {\bf{Example}} & {\bf{Result}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
mov & mov r3, \#3 & r3 = 3 \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
add & add r3, r0, r1 & r3 = 1 + 2 \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
sub & sub r2, r0 & r2 = 3 - 1 \tn 
% Row Count 6 (+ 1)
% Row 4
\SetRowColor{LightBackground}
lsl & lsl r3, r0, \#2 & r3 = 1 \textless{}\textless{} 2 = 4 \tn 
% Row Count 8 (+ 2)
% Row 5
\SetRowColor{white}
lsr & lsr r3, r0, \#2 & r3 = 1 \textgreater{}\textgreater{} 2 = 0 \tn 
% Row Count 10 (+ 2)
% Row 6
\SetRowColor{LightBackground}
asr & asr r3, r0, \#2 & r3 = 1 \textgreater{}\textgreater{}\textgreater{} 3 = 0 \tn 
% Row Count 12 (+ 2)
% Row 7
\SetRowColor{white}
and & and r3, r1, r0 & r3 = (1 and 2) = 0 \tn 
% Row Count 14 (+ 2)
% Row 8
\SetRowColor{LightBackground}
orr & orr r3, r1, r0 & r3 = (1 or 2) = 3 \tn 
% Row Count 16 (+ 2)
% Row 9
\SetRowColor{white}
not & not r3, r1 & r3 = \textasciitilde{}r1 = -3 \tn 
% Row Count 17 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{5.377cm}}{assume r0 = 1, r1 = 2, r2 = 3}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.14425 cm} x{1.23579 cm} x{2.19696 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{3}{x{5.377cm}}{\bf\textcolor{white}{Pseudo-ops}}  \tn
% Row 0
\SetRowColor{LightBackground}
{\bf{Instruction}} & {\bf{Example}} & {\bf{True Operation}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
nop & nop & r0 = r0 and r0 \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
eor & eor r0, r1, r2 & r0 = (r1 or r2) - (r1 and r2) \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
ib\{cond\} & ibgt \#2 & ble (branch if not gt) \tn 
% Row Count 7 (+ 2)
% Row 4
\SetRowColor{LightBackground}
cmp & cmp r0, r1 & Set flags using sub \tn 
% Row Count 8 (+ 1)
% Row 5
\SetRowColor{white}
cmn & cmn r0, r1 & Set flags using add \tn 
% Row Count 9 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\{op\}\{cond\} & addeq r0, r1, r2 & r0 = r1 + r2 if z=0 \tn 
% Row Count 11 (+ 2)
% Row 7
\SetRowColor{white}
psh & psh r0 & {[}SP{]} = r0 \tn 
% Row Count 12 (+ 1)
% Row 8
\SetRowColor{LightBackground}
pop & pop r0 & r0 = {[}SP{]} \tn 
% Row Count 13 (+ 1)
% Row 9
\SetRowColor{white}
zero & zero r0 & r0 = 0 \tn 
% Row Count 14 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\SetRowColor{LightBackground}
\mymulticolumn{3}{x{5.377cm}}{push and pop do not automatically increment/decrement SP.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}---}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}