mirror of
https://github.com/michaelcmartin/Ophis.git
synced 2024-12-22 03:29:55 +00:00
206 lines
3.2 KiB
HTML
206 lines
3.2 KiB
HTML
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<HTML
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><HEAD
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><TITLE
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>Related commands and options</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
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REL="HOME"
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TITLE="Programming with Ophis"
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HREF="book1.html"><LINK
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REL="UP"
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TITLE="The basics"
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HREF="c35.html"><LINK
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REL="PREVIOUS"
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TITLE="Producing Commodore 64 programs"
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HREF="x51.html"><LINK
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REL="NEXT"
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TITLE="Writing the actual code"
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HREF="x140.html"></HEAD
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><BODY
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CLASS="SECTION"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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SUMMARY="Header navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>Programming with Ophis</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="x51.html"
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ACCESSKEY="P"
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><<< Previous</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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>The basics</TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="x140.html"
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ACCESSKEY="N"
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>Next >>></A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECTION"
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><H1
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CLASS="SECTION"
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><A
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NAME="AEN119"
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>Related commands and options</A
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></H1
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><P
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> This code includes constants that are both in decimal and in
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hex. It is also possible to specify constants in octal, binary,
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or with an ASCII character.
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<P
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></P
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><UL
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><LI
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><P
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>To specify decimal constants, simply write the number.</P
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></LI
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><LI
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><P
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>To specify hexadecimal constants, put a $ in front.</P
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></LI
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><LI
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><P
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>To specify octal constants, put a 0 (zero) in front.</P
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></LI
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><LI
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><P
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>To specify binary constants, put a % in front.</P
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></LI
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><LI
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><P
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>To specify ASCII constants, put an apostrophe in front.</P
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></LI
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></UL
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>
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Example: 65 = $41 = 0101 = %1000001 = 'A
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</P
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><P
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> There are other commands besides <TT
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CLASS="LITERAL"
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>.byte</TT
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>
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and <TT
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CLASS="LITERAL"
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>.word</TT
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> to specify data. In particular,
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the <TT
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CLASS="LITERAL"
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>.dword</TT
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> command specifies four-byte values
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which some applications will find useful. Also, some linking
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formats (such as the <TT
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CLASS="FILENAME"
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>SID</TT
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> format) have
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header data in big-endian (high byte first) format.
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The <TT
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CLASS="LITERAL"
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>.wordbe</TT
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> and <TT
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CLASS="LITERAL"
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>.dwordbe</TT
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>
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directives provide a way to specify multibyte constants in
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big-endian formats cleanly.
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</P
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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SUMMARY="Footer navigation table"
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="x51.html"
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ACCESSKEY="P"
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><<< Previous</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="book1.html"
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ACCESSKEY="H"
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>Home</A
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></TD
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><TD
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|
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WIDTH="33%"
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|
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ALIGN="right"
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VALIGN="top"
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><A
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HREF="x140.html"
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|
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ACCESSKEY="N"
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>Next >>></A
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></TD
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></TR
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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|
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>Producing Commodore 64 programs</TD
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|
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><TD
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WIDTH="34%"
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|
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="c35.html"
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ACCESSKEY="U"
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>Up</A
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></TD
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|
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><TD
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WIDTH="33%"
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|
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ALIGN="right"
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|
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VALIGN="top"
|
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|
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>Writing the actual code</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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>
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