mirror of
https://github.com/curioustorvald/tsvm.git
synced 2026-03-08 12:11:51 +09:00
35 lines
2.0 KiB
TeX
35 lines
2.0 KiB
TeX
This chapter describes commands accepted by the \tbas\ editor.
|
|
|
|
\section{The Editor}
|
|
|
|
When you first launch the \tbas, all you can see is some generic welcome text and two letters: \code{Ok}. Sure, you can just start type away your programs and type \code{run} to execute them, there's more things you can do with.
|
|
|
|
\subsection{LOAD}
|
|
\codeline{\textbf{LOAD} FILENAME}\par
|
|
Loads BASIC program by the file name. Default working directory for \tbas\ is \code{/home/basic}.\footnote{This is a directory within the emulated disk. On the host machine, this directory is typically \code{PWD/assets/diskN/home/basic}, where \code{PWD} is working directory for the \thismachine, \code{diskN} is a number of the disk.}
|
|
|
|
\subsection{LIST}
|
|
\codeline{\textbf{LIST} [LINE\_NUMBER]}
|
|
\codeline{\textbf{LIST} [LINE\_FROM LINE\_TO]}\par
|
|
Displays BASIC program that currently has been typed. When no arguments were given, shows entire program; when single line number was given, displays that line; when range of line numbers were given, displays those lines.
|
|
|
|
\subsection{NEW}
|
|
\codeline{\textbf{NEW}}\par
|
|
Immediately deletes the program that currently has been typed.
|
|
|
|
\subsection{RENUM}
|
|
\codeline{\textbf{SAVE} FILENAME}\par
|
|
Re-numbers program line starting from 10 and incrementing by 10s. Jump targets will be re-numbered accordingly. Nonexisting jump targets will be replaced with \code{undefined}.\footnote{This behaviour is simply Javascript's null-value leaking into the BASIC. This is nonstandard behaviour and other \tbas\ implementations may act differently.}
|
|
|
|
\subsection{RUN}
|
|
\codeline{\textbf{RUN}}\par
|
|
Executes BASIC program that currently has been typed. Execution can be arbitrarily terminated with Ctrl-C key combination (except in \code{INPUT} mode).
|
|
|
|
\subsection{SAVE}
|
|
\codeline{\textbf{SAVE} FILENAME}\par
|
|
Saves BASIC program that currently has been typed. Existing files are overwritten \emph{silently}.
|
|
|
|
\subsection{SYSTEM}
|
|
\codeline{\textbf{SYSTEM}}\par
|
|
Exits \tbas.
|