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doc update for memory map

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minjaesong
2022-09-29 00:19:48 +09:00
parent d03a76d635
commit be8ad3e303
2 changed files with 92 additions and 4 deletions
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doc/implementation.tex
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@@ -174,7 +174,7 @@ Sys library allows programmers to manipulate the system in low-level.
\chapter{Serial Communication}
Some pheripherals such as disk drives are connected through the ``Serial Communication''.
Some peripherals such as disk drives are connected through the ``Serial Communication''.
Unlike the name suggests, Serial Communication is not at all \emph{serial}; it's more like a \emph{block communication}.
@@ -454,6 +454,89 @@ F12 & 142 \\
TODO
\chapter{Peripherals and Memory Mapping}
\index{memory map}The hardware registers and memories of a peripheral is memory-mapped to the specific addresses that can be \code{peek}ed and \code{poke}d.
The memory map of \thismachine\ is illustrated as following:
\newcommand{\memend}[1]{\raisebox{1.3em}{#1}}
\newcommand{\memlabel}[1]{\raisebox{-0.1ex}{#1}}
\begin{tikzpicture}
\centering
\draw[thick] (0,0) rectangle (6, 12);
% Memory starting addr
\draw (6,12) node[anchor=north west] {8388607};
\draw[thick] (0,8) node[anchor=north east] {-1} -- (6,8);
\draw (0,7) node[anchor=north east] {-1048577} -- (6,7);
\draw (0,6) node[anchor=north east] {-2097153} -- (6,6);
\draw (0,5) node[anchor=north east] {-3145729} -- (6,5);
\draw (0,4) node[anchor=north east] {-4194305} -- (6,4);
\draw (0,3) node[anchor=north east] {-5242881} -- (6,3);
\draw (0,2) node[anchor=north east] {-6291457} -- (6,2);
\draw (0,1) node[anchor=north east] {-7340033} -- (6,1);
% Memory ending addr
\draw (0,8) node[anchor=east] {\memend{0}};
\draw (6,7) node[anchor=west] {\memend{-1048576}};
\draw (6,6) node[anchor=west] {\memend{-2097152}};
\draw (6,5) node[anchor=west] {\memend{-3145728}};
\draw (6,4) node[anchor=west] {\memend{-4194304}};
\draw (6,3) node[anchor=west] {\memend{-5242880}};
\draw (6,2) node[anchor=west] {\memend{-6291456}};
\draw (6,1) node[anchor=west] {\memend{-7340032}};
\draw (6,0) node[anchor=west] {\memend{-8388608}};
% Labels
\draw(0,12.5) node[anchor=north east] {Start};
\draw(6,12.5) node[anchor=north west] {End};
\draw(3,10) node[anchor=mid] {\memlabel{Scratchpad Memory}};
\draw(3,7.5) node[anchor=mid] {\memlabel{MMIO Area}};
\draw(3,6.5) node[anchor=mid] {\memlabel{Peripheral Memory \#1}};
\draw(3,5.5) node[anchor=mid] {\memlabel{Peripheral Memory \#2}};
\draw(3,4.5) node[anchor=mid] {\memlabel{Peripheral Memory \#3}};
\draw(3,3.5) node[anchor=mid] {\memlabel{Peripheral Memory \#4}};
\draw(3,2.5) node[anchor=mid] {\memlabel{Peripheral Memory \#5}};
\draw(3,1.5) node[anchor=mid] {\memlabel{Peripheral Memory \#6}};
\draw(3,0.5) node[anchor=mid] {\memlabel{Peripheral Memory \#7}};
\end{tikzpicture}
The MMIO Area is further divided as shown:
\begin{tikzpicture}
\centering
\draw[thick] (0,0) rectangle (6, 8);
% Memory starting addr
\draw (0,8) node[anchor=north east] {-1} -- (6,8);
\draw (0,7) node[anchor=north east] {-131073} -- (6,7);
\draw (0,6) node[anchor=north east] {-262145} -- (6,6);
\draw (0,5) node[anchor=north east] {-393217} -- (6,5);
\draw (0,4) node[anchor=north east] {-524289} -- (6,4);
\draw (0,3) node[anchor=north east] {-655361} -- (6,3);
\draw (0,2) node[anchor=north east] {-786433} -- (6,2);
\draw (0,1) node[anchor=north east] {-917505} -- (6,1);
% Memory ending addr
\draw (6,7) node[anchor=west] {\memend{-131072}};
\draw (6,6) node[anchor=west] {\memend{-262144}};
\draw (6,5) node[anchor=west] {\memend{-393216}};
\draw (6,4) node[anchor=west] {\memend{-524288}};
\draw (6,3) node[anchor=west] {\memend{-655360}};
\draw (6,2) node[anchor=west] {\memend{-786432}};
\draw (6,1) node[anchor=west] {\memend{-917504}};
\draw (6,0) node[anchor=west] {\memend{-1048576}};
% Labels
\draw(0,8.5) node[anchor=north east] {Start};
\draw(6,8.5) node[anchor=north west] {End};
\draw(3,7.5) node[anchor=mid] {\memlabel{MMIO for Main Hardwares}};
\draw(3,6.5) node[anchor=mid] {\memlabel{MMIO for Peripheral \#1}};
\draw(3,5.5) node[anchor=mid] {\memlabel{MMIO for Peripheral \#2}};
\draw(3,4.5) node[anchor=mid] {\memlabel{MMIO for Peripheral \#3}};
\draw(3,3.5) node[anchor=mid] {\memlabel{MMIO for Peripheral \#4}};
\draw(3,2.5) node[anchor=mid] {\memlabel{MMIO for Peripheral \#5}};
\draw(3,1.5) node[anchor=mid] {\memlabel{MMIO for Peripheral \#6}};
\draw(3,0.5) node[anchor=mid] {\memlabel{MMIO for Peripheral \#7}};
\end{tikzpicture}
\chapter{Text and Graphics Display}
@@ -461,7 +544,11 @@ TODO: Textbuf, pixelbuf, graphics mode, chart of the draw order
\section{Text Buffer}
TODO
\index{text buffer}The reference text buffer stores 80 columns, 32 rows of characters with separate foreground and each character has separate 256 foreground and background colours.
While the graphics adapters can be plugged into any peripheral slot, it is highly recommended they occupy the 1st slot.
Text buffer is memory-mapped to the following address offset:
\subsection{Code Page}
\label{codepage}
@@ -793,9 +880,9 @@ TODO
\end{outline}
\section{Graphics MMIO}
\section{Graphics Memory Mapping}
\index{MMIO-graphics}
\index{graphics memory mapping}
\begin{tabulary}{\textwidth}{rL}
Address & Description \\