206 lines
3.2 KiB
HTML
206 lines
3.2 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<HTML
|
|
><HEAD
|
|
><TITLE
|
|
>Related commands and options</TITLE
|
|
><META
|
|
NAME="GENERATOR"
|
|
CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
|
|
REL="HOME"
|
|
TITLE="Programming with Ophis"
|
|
HREF="book1.html"><LINK
|
|
REL="UP"
|
|
TITLE="The basics"
|
|
HREF="c35.html"><LINK
|
|
REL="PREVIOUS"
|
|
TITLE="Producing Commodore 64 programs"
|
|
HREF="x51.html"><LINK
|
|
REL="NEXT"
|
|
TITLE="Writing the actual code"
|
|
HREF="x140.html"></HEAD
|
|
><BODY
|
|
CLASS="SECTION"
|
|
BGCOLOR="#FFFFFF"
|
|
TEXT="#000000"
|
|
LINK="#0000FF"
|
|
VLINK="#840084"
|
|
ALINK="#0000FF"
|
|
><DIV
|
|
CLASS="NAVHEADER"
|
|
><TABLE
|
|
SUMMARY="Header navigation table"
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TH
|
|
COLSPAN="3"
|
|
ALIGN="center"
|
|
>Programming with Ophis</TH
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="left"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="x51.html"
|
|
ACCESSKEY="P"
|
|
><<< Previous</A
|
|
></TD
|
|
><TD
|
|
WIDTH="80%"
|
|
ALIGN="center"
|
|
VALIGN="bottom"
|
|
>The basics</TD
|
|
><TD
|
|
WIDTH="10%"
|
|
ALIGN="right"
|
|
VALIGN="bottom"
|
|
><A
|
|
HREF="x140.html"
|
|
ACCESSKEY="N"
|
|
>Next >>></A
|
|
></TD
|
|
></TR
|
|
></TABLE
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"></DIV
|
|
><DIV
|
|
CLASS="SECTION"
|
|
><H1
|
|
CLASS="SECTION"
|
|
><A
|
|
NAME="AEN119"
|
|
>Related commands and options</A
|
|
></H1
|
|
><P
|
|
> This code includes constants that are both in decimal and in
|
|
hex. It is also possible to specify constants in octal, binary,
|
|
or with an ASCII character.
|
|
|
|
<P
|
|
></P
|
|
><UL
|
|
><LI
|
|
><P
|
|
>To specify decimal constants, simply write the number.</P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>To specify hexadecimal constants, put a $ in front.</P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>To specify octal constants, put a 0 (zero) in front.</P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>To specify binary constants, put a % in front.</P
|
|
></LI
|
|
><LI
|
|
><P
|
|
>To specify ASCII constants, put an apostrophe in front.</P
|
|
></LI
|
|
></UL
|
|
>
|
|
|
|
Example: 65 = $41 = 0101 = %1000001 = 'A
|
|
</P
|
|
><P
|
|
> There are other commands besides <TT
|
|
CLASS="LITERAL"
|
|
>.byte</TT
|
|
>
|
|
and <TT
|
|
CLASS="LITERAL"
|
|
>.word</TT
|
|
> to specify data. In particular,
|
|
the <TT
|
|
CLASS="LITERAL"
|
|
>.dword</TT
|
|
> command specifies four-byte values
|
|
which some applications will find useful. Also, some linking
|
|
formats (such as the <TT
|
|
CLASS="FILENAME"
|
|
>SID</TT
|
|
> format) have
|
|
header data in big-endian (high byte first) format.
|
|
The <TT
|
|
CLASS="LITERAL"
|
|
>.wordbe</TT
|
|
> and <TT
|
|
CLASS="LITERAL"
|
|
>.dwordbe</TT
|
|
>
|
|
directives provide a way to specify multibyte constants in
|
|
big-endian formats cleanly.
|
|
</P
|
|
></DIV
|
|
><DIV
|
|
CLASS="NAVFOOTER"
|
|
><HR
|
|
ALIGN="LEFT"
|
|
WIDTH="100%"><TABLE
|
|
SUMMARY="Footer navigation table"
|
|
WIDTH="100%"
|
|
BORDER="0"
|
|
CELLPADDING="0"
|
|
CELLSPACING="0"
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="x51.html"
|
|
ACCESSKEY="P"
|
|
><<< Previous</A
|
|
></TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="book1.html"
|
|
ACCESSKEY="H"
|
|
>Home</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="x140.html"
|
|
ACCESSKEY="N"
|
|
>Next >>></A
|
|
></TD
|
|
></TR
|
|
><TR
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="left"
|
|
VALIGN="top"
|
|
>Producing Commodore 64 programs</TD
|
|
><TD
|
|
WIDTH="34%"
|
|
ALIGN="center"
|
|
VALIGN="top"
|
|
><A
|
|
HREF="c35.html"
|
|
ACCESSKEY="U"
|
|
>Up</A
|
|
></TD
|
|
><TD
|
|
WIDTH="33%"
|
|
ALIGN="right"
|
|
VALIGN="top"
|
|
>Writing the actual code</TD
|
|
></TR
|
|
></TABLE
|
|
></DIV
|
|
></BODY
|
|
></HTML
|
|
> |