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1800 lines
58 KiB
Plaintext
1800 lines
58 KiB
Plaintext
<!doctype linuxdoc system>
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<article>
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<title>cc65 function reference
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<author>Ullrich von Bassewitz, <htmlurl url="mailto:uz@cc65.org" name="uz@cc65.org">
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<date>07.11.2002
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<abstract>
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cc65 is a C compiler for 6502 based systems. This function reference describes
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the available C functions supplied by the library.
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</abstract>
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<!-- Table of contents -->
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<toc>
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<!-- Begin the document -->
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<sect>Introduction<p>
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cc65 is a C compiler for 6502 based systems. It implements a subset of the ISO
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C standard plus additional functions specially crafted for 6502 systems or
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just some of the supported machines. This function refrence describes the
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available functions together with any limitations.
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For an overview about the available libraries, their purpose, and any
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differences to the ISO standard, please have a look at the <htmlurl
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url="library.html" name="cc65 Library Overview">.
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<bf/Note:/ Standard C functions are listed here, but not described in detail.
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Since these functions behave identical on all standard compliant systems, they
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are described in any book covering standard C.
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Each entry for a function contains a detailed description
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<quote>
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<descrip>
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<tag/Function/Summary of what <bf/function/ does.
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<tag/Header/The header file that contains the declaration.
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<tag/Declaration/Describes the needed header files and declaration of the
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function.
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<tag/Description/Description of the function.
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<tag/Limits/Limits.
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<tag/Availability/The availability of the function.
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<tag/See also/Other related functions.
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<tag/Example/A piece of actual code using the function.
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</descrip>
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</quote>
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<sect>Functions by header file<p>
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<sect1><tt/6502.h/<label id="6502.h"><p>
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<itemize>
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<item><ref id="BRK" name="BRK">
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<item><ref id="CLI" name="CLI">
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<item><ref id="SEI" name="SEI">
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<!-- <item><ref id="_sys" name="_sys"> -->
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<!-- <item><ref id="getcpu" name="getcpu"> -->
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<!-- <item><ref id="reset_brk" name="reset_brk"> -->
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<!-- <item><ref id="set_brk" name="set_brk"> -->
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</itemize>
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<sect1><tt/assert.h/<label id="assert.h"><p>
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<itemize>
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<item><ref id="assert" name="assert">
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</itemize>
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<sect1><tt/conio.h/<label id="conio.h"><p>
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<itemize>
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<item><ref id="bgcolor" name="bgcolor">
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<item><ref id="bordercolor" name="bordercolor">
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<item><ref id="cclear" name="cclear">
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<item><ref id="cclearxy" name="cclearxy">
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<item><ref id="cgetc" name="cgetc">
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<item><ref id="chline" name="chline">
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<item><ref id="chlinexy" name="chlinexy">
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<item><ref id="clrscr" name="clrscr">
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<!-- <item><ref id="cprintf" name="cprintf"> -->
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<!-- <item><ref id="cputc" name="cputc"> -->
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<!-- <item><ref id="cputcxy" name="cputcxy"> -->
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<!-- <item><ref id="cputs" name="cputs"> -->
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<!-- <item><ref id="cputsxy" name="cputsxy"> -->
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<item><ref id="cursor" name="cursor">
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<item><ref id="cvline" name="cvline">
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<item><ref id="cvlinexy" name="cvlinexy">
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<item><ref id="gotox" name="gotox">
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<item><ref id="gotoxy" name="gotoxy">
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<item><ref id="gotoy" name="gotoy">
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<item><ref id="kbhit" name="kbhit">
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<item><ref id="revers" name="revers">
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<item><ref id="screensize" name="screensize">
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<item><ref id="textcolor" name="textcolor">
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<!-- <item><ref id="vcprintf" name="vcprintf"> -->
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<item><ref id="wherex" name="wherex">
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<item><ref id="wherey" name="wherey">
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</itemize>
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<sect1><tt/ctype.h/<label id="ctype.h"><p>
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<itemize>
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<item><ref id="isalnum" name="isalnum">
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<item><ref id="isalpha" name="isalpha">
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<item><ref id="isascii" name="isascii">
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<item><ref id="isblank" name="isblank">
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<item><ref id="iscntrl" name="iscntrl">
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<item><ref id="isdigit" name="isdigit">
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<item><ref id="isgraph" name="isgraph">
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<item><ref id="islower" name="islower">
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<item><ref id="isprint" name="isprint">
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<item><ref id="ispunct" name="ispunct">
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<item><ref id="isspace" name="isspace">
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<item><ref id="isupper" name="isupper">
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<item><ref id="isxdigit" name="isxdigit">
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<item><ref id="tolower" name="tolower">
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<item><ref id="toupper" name="toupper">
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</itemize>
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<sect1><tt/em.h/<label id="em.h"><p>
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<itemize>
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<item><ref id="em_commit" name="em_commit">
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<item><ref id="em_copyfrom" name="em_copyfrom">
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<item><ref id="em_copyto" name="em_copyto">
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<item><ref id="em_load_driver" name="em_load_driver">
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<item><ref id="em_map" name="em_map">
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<item><ref id="em_pagecount" name="em_pagecount">
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<item><ref id="em_unload" name="em_unload">
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<item><ref id="em_use" name="em_use">
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</itemize>
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<sect1><tt/stdlib.h/<label id="stdlib.h"><p>
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<itemize>
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<item><ref id="abort" name="abort">
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<item><ref id="atexit" name="atexit">
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<item><ref id="exit" name="exit">
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</itemize>
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<sect1><tt/string.h/<label id="string.h"><p>
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<itemize>
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<item><ref id="strcat" name="strcat">
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<item><ref id="strchr" name="strchr">
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<item><ref id="strcpy" name="strcpy">
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<item><ref id="strlen" name="strlen">
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<item><ref id="strlower" name="strlower">
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<item><ref id="strlwr" name="strlwr">
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<item><ref id="strncpy" name="strncpy">
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<item><ref id="strrchr" name="strrchr">
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<item><ref id="strupper" name="strupper">
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<item><ref id="strupr" name="strupr">
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</itemize>
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<sect>Alphabetical function reference<p>
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<sect1>BRK<label id="BRK"><p>
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<quote>
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<descrip>
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<tag/Function/Insert a 6502 BRK instrunction into the code.
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<tag/Header/<tt/<ref id="6502.h" name="6502.h">/
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<tag/Declaration/<tt/void BRK (void);/
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<tag/Description/The function will insert a 6502 BRK instruction into the code
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which may be used to trigger a debugger.
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<tag/Limits/<itemize>
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<item>The function is actually a macro.
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<item>The inserted instruction may lead to unexpected results if no debugger
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is present.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="CLI" name="CLI">,
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<ref id="SEI" name="SEI">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>CLI<label id="CLI"><p>
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<quote>
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<descrip>
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<tag/Function/Insert a 6502 CLI instrunction into the code.
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<tag/Header/<tt/<ref id="6502.h" name="6502.h">/
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<tag/Declaration/<tt/void CLI (void);/
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<tag/Description/The function will insert a 6502 CLI instruction into the code,
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so interrupts are disabled. Note that non maskable interrupts cannot be
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disabled.
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<tag/Limits/<itemize>
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<item>The function is actually a macro.
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<item>Disabling interrupts may lead to unexpected results.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="BRK" name="BRK">,
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<ref id="SEI" name="SEI">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>SEI<label id="SEI"><p>
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<quote>
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<descrip>
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<tag/Function/Insert a 6502 SEI instrunction into the code.
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<tag/Header/<tt/<ref id="6502.h" name="6502.h">/
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<tag/Declaration/<tt/void SEI (void);/
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<tag/Description/The function will insert a 6502 SEI instruction into the code,
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so interrupts are enabled. Enabling interrupts has no effects if they are
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already enabled (the default).
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<tag/Limits/<itemize>
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<item>The function is actually a macro.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="BRK" name="BRK">,
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<ref id="CLI" name="CLI">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>abort<label id="abort"><p>
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<quote>
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<descrip>
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<tag/Function/Terminates a program abnormally.
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<tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
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<tag/Declaration/<tt/void abort (void);/
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<tag/Description/<tt/abort/ writes a termination message on stderr, then
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terminates the program with an exit code of 3.
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<tag/Availability/ISO 9899
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<tag/See also/
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<ref id="assert" name="assert">,
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<ref id="exit" name="exit">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>assert<label id="assert"><p>
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<quote>
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<descrip>
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<tag/Function/Test a condition and possibly abort.
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<tag/Header/<tt/<ref id="assert.h" name="assert.h">/
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<tag/Declaration/<tt/void assert (int cond);/
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<tag/Description/<tt/assert/ is a macro that expands to a <tt/id/
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statement. If the condition evaluates t zero (false), assert prints a message
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on stderr and aborts the program.
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<tag/Limits/<itemize>
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<item>The function is actually a macro.
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</itemize>
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<tag/Availability/ISO 9899
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<tag/See also/
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<ref id="abort" name="abort">,
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<ref id="exit" name="exit">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>atexit<label id="atexit"><p>
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<quote>
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<descrip>
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<tag/Function/Register an exit function.
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<tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
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<tag/Declaration/<tt/int __fastcall__ atexit (void (*exitfunc) (void));/
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<tag/Description/<tt/atexit/ registers the function pointed to by
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<tt/exitfunc/ as an exit function. Exit functions are called when the program
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terminates, they are called in LIFO order (the last function registered is
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called first). <tt/atexit/ returns zero on success and a nonzero value on
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failure.
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<tag/Limits/<itemize>
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<item>A maximum of 5 exit functions can be registered.
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<item>There is no way to unregister an exit function.
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<item>The function is only available as fastcall function, so it may only be
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used in presence of a prototype.
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</itemize>
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<tag/Availability/ISO 9899
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<tag/See also/
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<ref id="abort" name="abort">,
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<ref id="exit" name="exit">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>bgcolor<label id="bgcolor"><p>
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<quote>
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<descrip>
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<tag/Function/Set the background text color.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/unsigned char __fastcall__ bgcolor (unsigned char color);/
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<tag/Description/The function will set a new background text color. It returns
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the old (current) background color.
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<tag/Limits/<itemize>
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<item>Background colors are system dependent. The function may have no effect
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on systems where the background color cannot be changed.
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<item>The function is only available as fastcall function, so it may only be
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used in presence of a prototype.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="bordercolor" name="bordercolor">,
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<ref id="textcolor" name="textcolor">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>bordercolor<label id="bordercolor"><p>
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<quote>
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<descrip>
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<tag/Function/Set the border (frame) color.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/unsigned char __fastcall__ bordercolor (unsigned char color);/
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<tag/Description/The function will set a new border color. It returns the old
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(current) border color.
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<tag/Limits/<itemize>
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<item>Border colors are system dependent. The function may have no effect
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on systems where the border color cannot be changed.
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<item>The function is only available as fastcall function, so it may only
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be used in presence of a prototype.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="bgcolor" name="bgcolor">,
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<ref id="textcolor" name="textcolor">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>cclear<label id="cclear"><p>
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<quote>
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<descrip>
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<tag/Function/Clear part of a line (write a given amount of spaces).
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/void __fastcall__ cclear (unsigned char length);/
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<tag/Description/The function clears part of a line by writing <tt/length/
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spaces in the current text color.
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<tag/Limits/<itemize>
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<item>The function is only available as fastcall function, so it may
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only be used in presence of a prototype.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="cclearxy" name="cclearxy">,
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<ref id="clrscr" name="clrscr">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>cclearxy<label id="cclearxy"><p>
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<quote>
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<descrip>
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<tag/Function/Clear part of a line (write a given amount of spaces) starting
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at a specific screen position.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/void __fastcall__ cclearxy (unsigned char length);/
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<tag/Description/The function moves the cursor to a specific position, and
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will then clear part of the line by writing <tt/length/ spaces in the current
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text color.
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<tag/Limits/<itemize>
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<item>The function is only available as fastcall function, so it may
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only be used in presence of a prototype.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="cclear" name="cclear">,
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<ref id="clrscr" name="clrscr">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>cgetc<label id="cgetc"><p>
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<quote>
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<descrip>
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<tag/Function/Read a character from the keyboard.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/char cgetc (void);/
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<tag/Description/The function reads a character from the keyboard. If there is
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no character available, <tt/cgetc/ waits until the user presses a key. If the
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cursor is enabled by use of the <tt/cursor/ function, a blinking cursor is
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displayed while waiting.
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<tag/Limits/<itemize>
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<item>If the system supports a keyboard buffer, <tt/cgetc/ will fetch a key
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from this buffer and wait only if the buffer is empty.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="cursor" name="cursor">,
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<ref id="kbhit" name="kbhit">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>chline<label id="chline"><p>
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<quote>
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<descrip>
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<tag/Function/Output a horizontal line in text mode.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/void __fastcall__ chline (unsigned char length);/
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<tag/Description/The function outputs a horizontal line with the given length
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starting at the current cursor position.
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<tag/Limits/<itemize>
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<item>The character used to draw the horizontal line is system dependent.
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If available, a line drawing character is used. Drawing a line that is partially
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off screen leads to undefined behaviour.
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<item>The function is only available as fastcall function, so it may only be
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used in presence of a prototype.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="chlinexy" name="chlinexy">,
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<ref id="cvline" name="cvline">,
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<ref id="cvlinexy" name="cvlinexy">
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<tag/Example/None.
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</descrip>
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</quote>
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<sect1>chlinexy<label id="chlinexy"><p>
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<quote>
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<descrip>
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<tag/Function/Output a horizontal line at a given position in text mode.
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<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
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<tag/Declaration/<tt/void __fastcall__ chlinexy (unsigned char x, unsigned char y, unsigned char length);/
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<tag/Description/The function outputs a horizontal line with the given length
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starting at a given position.
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<tag/Limits/<itemize>
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<item>The character used to draw the horizontal line is system dependent.
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If available, a line drawing character is used. Drawing a line that is partially
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off screen leads to undefined behaviour.
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<item>The function is only available as fastcall function, so it may only be
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used in presence of a prototype.
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</itemize>
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<tag/Availability/cc65
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<tag/See also/
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<ref id="chline" name="chline">,
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<ref id="cvline" name="cvline">,
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<ref id="cvlinexy" name="cvlinexy">
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<tag/Example/None.
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</descrip>
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</quote>
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|
|
|
|
<sect1>clrscr<label id="clrscr"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Clear the text screen.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void clrscr (void);/
|
|
<tag/Description/The function clears the text screen and moves the cursor to
|
|
the upper left corner.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="cclear" name="cclear">,
|
|
<ref id="cclearxy" name="cclearxy">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>cursor<label id="cursor"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Enable/disable a blinking cursor when waiting for keyboard input.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/unsigned char __fastcall__ cursor (unsigned char onoff);/
|
|
<tag/Description/If the argument to the function is non zero, a blinking cursor
|
|
will be enabled when the <tt/cgetc/ function waits for input from the keyboard.
|
|
If the argument is zero, <tt/cgetc/ will wait without a blinking cursor.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="cgetc" name="cgetc">,
|
|
<ref id="kbhit" name="kbhit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>cvline<label id="cvline"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Output a vertical line in text mode.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ cvline (unsigned char length);/
|
|
<tag/Description/The function outputs a vertical line with the given length
|
|
starting at the current cursor position.
|
|
<tag/Limits/<itemize>
|
|
<item>The character used to draw the vertical line is system dependent.
|
|
If available, a line drawing character is used. Drawing a line that is partially
|
|
off screen leads to undefined behaviour.
|
|
<item>The function is only available as fastcall function, so it may only be
|
|
used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="chline" name="chline">,
|
|
<ref id="chlinexy" name="chlinexy">,
|
|
<ref id="cvlinexy" name="cvlinexy">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>cvlinexy<label id="cvlinexy"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Output a vertical line at a given position in text mode.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ cvlinexy (unsigned char x, unsigned char y, unsigned char length);/
|
|
<tag/Description/The function outputs a vertical line with the given length
|
|
starting at a given position.
|
|
<tag/Limits/<itemize>
|
|
<item>The character used to draw the vertical line is system dependent.
|
|
If available, a line drawing character is used. Drawing a line that is partially
|
|
off screen leads to undefined behaviour.
|
|
<item>The function is only available as fastcall function, so it may only be
|
|
used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="chline" name="chline">,
|
|
<ref id="chlinexy" name="chlinexy">,
|
|
<ref id="cvline" name="cvline">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>em_commit<label id="em_commit"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Commit changes into extended memory.
|
|
<tag/Header/<tt/<ref id="em.h" name="em.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ em_commit (void);/
|
|
<tag/Description/Commit changes in the memory window to extended storage. If
|
|
the contents of the memory window have been changed, these changes may be lost
|
|
if <tt/<ref id="em_map" name="em_map">/, <tt/<ref id="em_use" name="em_use">/,
|
|
<tt/<ref id="em_copyfrom" name="em_copyfrom">/ or <tt/<ref id="em_copyto"
|
|
name="em_copyto">/ are called without calling <tt/em_commit/ first.
|
|
<tag/Limits/<itemize>
|
|
<item>Calling <tt/em_commit/ does not necessarily mean that changes to the
|
|
memory window are discarded, it does just mean that the drivers is allowed
|
|
to discard it.
|
|
<item>The function is only available as fastcall function, so it may only be
|
|
used in presence of a prototype.
|
|
<item>The function produces undefined results if no extended memory driver is
|
|
loaded.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="em_load_driver" name="em_load_driver">,
|
|
<ref id="em_map" name="em_map">,
|
|
<ref id="em_use" name="em_use">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>em_copyfrom<label id="em_copyfrom"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Copy from extended into normal memory.
|
|
<tag/Header/<tt/<ref id="em.h" name="em.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ em_copyfrom (const struct em_copy* copy_data);/
|
|
<tag/Description/Copy data from extended memory into linear memory. Source and
|
|
target addresses as well as the number of bytes to transfer are specified in
|
|
the <tt/em_copy/ structure that is passed as a parameter.
|
|
<tag/Limits/<itemize>
|
|
<item>Calling <tt/em_copyfrom/ will invalidate the memory window, so if you
|
|
made any changes to the data in the window, call <tt/<ref id="em_commit"
|
|
name="em_commit">/ first, or the changes are lost.
|
|
<item>The function is only available as fastcall function, so it may only be
|
|
used in presence of a prototype.
|
|
<item>The function produces undefined results if no extended memory driver is
|
|
loaded.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="em_commit" name="em_commit">,
|
|
<ref id="em_copyto" name="em_copyto">,
|
|
<ref id="em_load_driver" name="em_load_driver">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>em_copyto<label id="em_copyto"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Copy from normal into extended memory.
|
|
<tag/Header/<tt/<ref id="em.h" name="em.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ em_copyto (const struct em_copy* copy_data);/
|
|
<tag/Description/Copy data from linear into extended memory. Source and
|
|
target addresses as well as the number of bytes to transfer are specified in
|
|
the <tt/em_copy/ structure that is passed as a parameter.
|
|
<tag/Limits/<itemize>
|
|
<item>Calling <tt/em_copyto/ will invalidate the memory window, so if you
|
|
made any changes to the data in the window, call <tt/<ref id="em_commit"
|
|
name="em_commit">/ first, or the changes are lost.
|
|
<item>The function is only available as fastcall function, so it may only be
|
|
used in presence of a prototype.
|
|
<item>The function produces undefined results if no extended memory driver is
|
|
loaded.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="em_commit" name="em_commit">,
|
|
<ref id="em_copyfrom" name="em_copyfrom">,
|
|
<ref id="em_load_driver" name="em_load_driver">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>em_load_driver<label id="em_load_driver"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Load and initialize an extended memory driver.
|
|
<tag/Header/<tt/<ref id="em.h" name="em.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ em_load_driver (const char* name);/
|
|
<tag/Description/Load an extended memory driver into memory and initialize
|
|
it. The function returns an error code that tells if all this has been
|
|
successful.
|
|
<tag/Limits/<itemize>
|
|
<item>Not all drivers are able to detect if the supported hardware is really
|
|
present.
|
|
<item>The function is only available as fastcall function, so it may only be
|
|
used in presence of a prototype.
|
|
<item>The driver is loaded by name, so currently you must know the type of
|
|
extended memory that should be supported. There is no autodetect capability.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="em_unload" name="em_unload">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>em_map<label id="em_map"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Make a page of extended memory accessible.
|
|
<tag/Header/<tt/<ref id="em.h" name="em.h">/
|
|
<tag/Declaration/<tt/void* __fastcall__ em_map (unsigned page);/
|
|
<tag/Description/The function maps one page of extended memory into linear
|
|
memory and returns a pointer to the page frame. Depending on the hardware
|
|
and driver, the data is either mapped into the address space or transfered
|
|
into a buffer. If you don't need the actual contents of the page (for example
|
|
because you're going to overwrite it completely, it is better to call
|
|
<tt/<ref id="em_use" name="em_use">/ instead. <tt/em_use/ will not transfer the
|
|
data if it is possible to avoid that.
|
|
<tag/Limits/<itemize>
|
|
<item>Calling <tt/em_map/ will invalidate the memory window, so if you
|
|
made any changes to the data in the window, call <tt/<ref id="em_commit"
|
|
name="em_commit">/ first, or the changes are lost.
|
|
<item>The function is only available as fastcall function, so it may only be
|
|
used in presence of a prototype.
|
|
<item>The function produces undefined results if no extended memory driver is
|
|
loaded.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="em_commit" name="em_commit">,
|
|
<ref id="em_load_driver" name="em_load_driver">,
|
|
<ref id="em_use" name="em_use">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>em_pagecount<label id="em_pagecount"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Return the number of available extended memory pages.
|
|
<tag/Header/<tt/<ref id="em.h" name="em.h">/
|
|
<tag/Declaration/<tt/unsigned __fastcall__ em_pagecount (void);/
|
|
<tag/Description/The function returns the size of the extended memory supported
|
|
by the driver in 256 byte pages.
|
|
<tag/Limits/<itemize>
|
|
<item>The function returns zero if no extended memory driver is loaded.
|
|
<item>The function may return zero if the supported hardware was not detected.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="em_load_driver" name="em_load_driver">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>em_unload<label id="em_unload"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Unload an extended memory driver.
|
|
<tag/Header/<tt/<ref id="em.h" name="em.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ em_unload (void);/
|
|
<tag/Description/The function unloads a loaded extended memory driver and
|
|
frees all memory allocated for the driver.
|
|
<tag/Limits/<itemize>
|
|
<item>The function does nothing if no driver is loaded.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="em_load_driver" name="em_load_driver">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>em_use<label id="em_use"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Prepare an extended memory page for use.
|
|
<tag/Header/<tt/<ref id="em.h" name="em.h">/
|
|
<tag/Declaration/<tt/void* __fastcall__ em_use (unsigned page);/
|
|
<tag/Description/The function maps one page of extended memory into linear
|
|
memory and returns a pointer to the page frame. This function is similar to
|
|
<tt/<ref id="em_map" name="em_map">/, but will not transfer data into the
|
|
actual memory window in the assumption that the existing data is wrong or
|
|
will get overwritten.
|
|
<tag/Limits/<itemize>
|
|
<item>Calling <tt/em_use/ will invalidate the memory window, so if you
|
|
made any changes to the data in the window, call <tt/<ref id="em_commit"
|
|
name="em_commit">/ first, or the changes are lost.
|
|
<item>The function is only available as fastcall function, so it may only be
|
|
used in presence of a prototype.
|
|
<item>The function produces undefined results if no extended memory driver is
|
|
loaded.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="em_commit" name="em_commit">,
|
|
<ref id="em_load_driver" name="em_load_driver">,
|
|
<ref id="em_map" name="em_map">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>exit<label id="exit"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Terminate the program.
|
|
<tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ exit (int status);/
|
|
<tag/Description/<tt/exit/ terminates the program. The argument specifies the
|
|
return code of the program. Before termination, all files are closed, buffered
|
|
output is written and any functions registered with <tt/<ref id="atexit"
|
|
name="atexit">/ are called. Common values for status are <tt/EXIT_SUCCESS/ and
|
|
<tt/EXIT_FAILURE/ which are also defined in <tt/<ref id="stdlib.h"
|
|
name="stdlib.h">/.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
<item>It depends on the host machine if the program return code can be
|
|
evaluated or is ignored.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="abort" name="abort">,
|
|
<ref id="exit" name="exit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>gotox<label id="gotox"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Move the text mode cursor to a new X position.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ gotox (unsigned char x);/
|
|
<tag/Description/The function moves the text mode cursor to the specified X
|
|
position while leaving the Y position untouched. The leftmost position on the
|
|
screen has the coordinate 0.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype.
|
|
<item>Invalid values for the X position (out of screen coordinates) may
|
|
lead to undefined behaviour.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="gotoy" name="gotoy">,
|
|
<ref id="gotoxy" name="gotoxy">,
|
|
<ref id="wherex" name="wherex">,
|
|
<ref id="wherey" name="wherey">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>gotoxy<label id="gotoxy"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Move the text mode cursor to a new position.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ gotoxy (unsigned char x, unsigned char y);/
|
|
<tag/Description/The function moves the text mode cursor to the specified
|
|
position. The leftmost position on the screen has the X coordinate 0, the
|
|
topmost line has the Y coordinate 0.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only be
|
|
used in presence of a prototype.
|
|
<item>Invalid values for any of both coordinates (out of screen positions) may
|
|
lead to undefined behaviour.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="gotox" name="gotox">,
|
|
<ref id="gotoy" name="gotoy">,
|
|
<ref id="wherex" name="wherex">,
|
|
<ref id="wherey" name="wherey">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>gotoy<label id="gotoy"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Move the text mode cursor to a new Y position.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ gotoy (unsigned char x);/
|
|
<tag/Description/The function moves the text mode cursor to the specified Y
|
|
position while leaving the X position untouched. The uppermost position on the
|
|
screen has the coordinate 0.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype.
|
|
<item>Invalid values for the Y position (out of screen coordinates) may lead
|
|
to undefined behaviour.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="gotox" name="gotox">,
|
|
<ref id="gotoxy" name="gotoxy">,
|
|
<ref id="wherex" name="wherex">,
|
|
<ref id="wherey" name="wherey">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isalnum<label id="isalnum"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a letter or digit.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isalnum (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a letter or digit. The return value is non zero if the character
|
|
is anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing
|
|
the macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isalpha<label id="isalpha"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a letter.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isalpha (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a letter. The return value is non zero if the character is anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isascii<label id="isascii"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is in the ASCII (0..127) range.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isascii (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is in the range 0..127 (the range of valid ASCII characters) and a non zero
|
|
value if not.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isblank<label id="isblank"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a space or tab.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isblank (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a blank or space character. The return value is non zero if the character
|
|
is anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>iscntrl<label id="iscntrl"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a control character.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ iscntrl (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a control character. The return value is non zero if the character
|
|
is anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isdigit<label id="isdigit"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a digit.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isdigit (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a digit. The return value is non zero if the character is anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isgraph<label id="isgraph"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a printable character (except
|
|
space).
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isgraph (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a printable character with the exception of space. The return value is non
|
|
zero if the character is anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>islower<label id="islower"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a lower case letter.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ islower (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a lower case letter. The return value is non zero if the character is
|
|
anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isprint<label id="isprint"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a printable character.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isprint (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a printable character (this includes the space character). The return value
|
|
is non zero if the character is anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>ispunct<label id="ispunct"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a printable character but not a
|
|
space or an alphanumeric character.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ ispunct (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a printable character, but not a space or anything alphanumeric. The return
|
|
value is non zero if the character is anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isspace<label id="isspace"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a a white-space character.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isspace (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a white space character. The return value is non zero if the character is
|
|
anything else. The standard white space characters are: space, formfeed ('\f'),
|
|
newline ('\n'), carriage return ('\r'), horizontal tab ('\t'), and vertical tab
|
|
('\v').
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isupper<label id="isupper"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is an upper case letter.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isupper (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is an upper case letter. The return value is non zero if the character is
|
|
anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isxdigit" name="isxdigit">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>isxdigit<label id="isxdigit"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if a given character is a hexadecimal digit.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ isxdigit (int c);/
|
|
<tag/Description/The function returns a value of zero if the given argument
|
|
is a hexadecimal digit (0..9, a..f and A..F). The return value is non zero
|
|
if the character is anything else.
|
|
<tag/Limits/<itemize>
|
|
<item>When compiling with <tt/-Os/ the function is actually a macro. The
|
|
inline sequence generated by the macro will not work correctly for values
|
|
outside the range 0..255. <bf/Note:/ The constant <tt/EOF/ is not part of
|
|
this range. The non inline function may be accessed by <tt/#undef/'ing the
|
|
macro.
|
|
<item>When compiling without <tt/-Os/, the function is only available as
|
|
fastcall function, so it may only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="isalnum" name="isalnum">,
|
|
<ref id="isalpha" name="isalpha">,
|
|
<ref id="isascii" name="isascii">,
|
|
<ref id="isblank" name="isblank">,
|
|
<ref id="iscntrl" name="iscntrl">,
|
|
<ref id="isdigit" name="isdigit">,
|
|
<ref id="isgraph" name="isgraph">,
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isprint" name="isprint">,
|
|
<ref id="ispunct" name="ispunct">,
|
|
<ref id="isspace" name="isspace">,
|
|
<ref id="isupper" name="isupper">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>kbhit<label id="kbhit"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Check if there's a key waiting in the keyboard buffer.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/unsigned char kbhit (void);/
|
|
<tag/Description/The function returns a value of zero if there is no character
|
|
waiting to be read from the keyboard. It returns non zero otherwise.
|
|
<tag/Limits/<itemize>
|
|
<item>If the system does not support a keyboard buffer (most systems
|
|
do), the function is rather useless.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="cgetc" name="cgetc">,
|
|
<ref id="cursor" name="cursor">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>revers<label id="revers"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Control revers character display.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/unsigned char __fastcall__ revers (unsigned char onoff);/
|
|
<tag/Description/If the argument is non zero, the function enables reverse
|
|
character display. If the argument is zero, reverse character display is
|
|
switched off. The old value of the setting is returned.
|
|
<tag/Limits/<itemize>
|
|
<item>The function may not be supported by the hardware, in which case
|
|
the call is ignored.
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="textcolor" name="textcolor">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>screensize<label id="screensize"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Return the dimensions of the text mode screen.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ screensize (unsigned char* x, unsigned char* y);/
|
|
<tag/Description/The function returns the dimensions of the text mode screen.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="gotox" name="gotox">,
|
|
<ref id="gotoxy" name="gotoxy">,
|
|
<ref id="gotoy" name="gotoy">,
|
|
<ref id="wherex" name="wherex">,
|
|
<ref id="wherey" name="wherey">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>strcat<label id="strcat"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Concatentate two strings.
|
|
<tag/Header/<tt/<ref id="string.h" name="string.h">/
|
|
<tag/Declaration/<tt/char* __fastcall__ strcat (char* s1, const char* s2);/
|
|
<tag/Description/The <tt/strcat/ function appends a copy of the string
|
|
pointed to by s2 (including the terminating null byte) to the end of the
|
|
string pointed to by s1. The initial byte of s2 overwrites the null byte at
|
|
the end of s1.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
<item>If copying takes place between objects that overlap, the behavior
|
|
is undefined.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="strcpy" name="strcpy">
|
|
<ref id="strncpy" name="strncpy">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>strchr<label id="strchr"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Search for a character in a string.
|
|
<tag/Header/<tt/<ref id="string.h" name="string.h">/
|
|
<tag/Declaration/<tt/char* __fastcall__ strchr (const char* s, int c);/
|
|
<tag/Description/The <tt/strchr/ function locates the first occurrence of <tt/c/
|
|
(converted to a char) in the string pointed to by <tt/s/. The terminating null
|
|
byte is considered to be part of the string. Upon completion, the function
|
|
returns a pointer to the byte, or a null pointer if the byte was not found.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="strrchr" name="strrchr">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>strcpy<label id="strcpy"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Copy a string.
|
|
<tag/Header/<tt/<ref id="string.h" name="string.h">/
|
|
<tag/Declaration/<tt/char* __fastcall__ strcpy (char* s1, const char* s2);/
|
|
<tag/Description/The <tt/strcpy/ function copies the string pointed to by
|
|
<tt/s2/ (including the terminating null byte) into the array pointed to by
|
|
<tt/s1/. The function will always return <tt/s1/.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
<item>If copying takes place between objects that overlap, the behavior
|
|
is undefined.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="strcat" name="strcat">
|
|
<ref id="strncpy" name="strncpy">
|
|
<tag/Example/
|
|
<verb>
|
|
#include <string.h>
|
|
|
|
static char hello[14];
|
|
|
|
strcpy (hello, "Hello world!\n");
|
|
</verb>
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>strlen<label id="strlen"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Return the length of a string.
|
|
<tag/Header/<tt/<ref id="string.h" name="string.h">/
|
|
<tag/Declaration/<tt/size_t __fastcall__ strlen (const char* s);/
|
|
<tag/Description/The <tt/strlen/ function computes the number of bytes in the
|
|
string to which s points, not including the terminating null byte.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
<item>When compiling with <tt/-Os/ (inline known standard functions), the
|
|
function does not work correctly for strings with more than 255 characters.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="strcpy" name="strcpy">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>strlower<label id="strlower"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Make a string lower case.
|
|
<tag/Header/<tt/<ref id="string.h" name="string.h">/
|
|
<tag/Declaration/<tt/char* __fastcall__ strlower (char* s);/
|
|
<tag/Description/The <tt/strlower/ function will apply the <tt/tolower/
|
|
function to each character of a string. The function will always return <tt/s/.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
<item>The function prototype is unavailable when compiling in strict ANSI mode.
|
|
<item>An alias name for this function is <tt/strlwr/.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="strupper" name="strupper">
|
|
<ref id="tolower" name="tolower">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>strlwr<label id="strlwr"><p>
|
|
|
|
<quote>
|
|
See <tt/strlower/.
|
|
</quote>
|
|
|
|
|
|
<sect1>strncpy<label id="strncpy"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Copy part of a string.
|
|
<tag/Header/<tt/<ref id="string.h" name="string.h">/
|
|
<tag/Declaration/<tt/char* __fastcall__ strcpy (char* s1, const char* s2, size_t n);/
|
|
<tag/Description/The <tt/strncpy/ function copies not more than n bytes from
|
|
the array pointed to by <tt/s2/ to the array pointed to by <tt/s1/. If the array
|
|
pointed to by <tt/s2/ is a string that is shorter than n bytes, null bytes are
|
|
appended to the copy in the array pointed to by <tt/s1/, until <tt/n/ bytes are
|
|
written. The function will always return <tt/s1/.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype. If there is no null byte in the first <tt/n/
|
|
bytes of the array pointed to by <tt/s2/, the result is not null-terminated.
|
|
<item>If copying takes place between objects that overlap, the behavior is
|
|
undefined.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="strcat" name="strcat">
|
|
<ref id="strcpy" name="strcpy">
|
|
<tag/Example/
|
|
<verb>
|
|
#include <string.h>
|
|
|
|
static char hello[6];
|
|
|
|
strcpy (hello, "Hello world!\n", sizeof (hello) - 1);
|
|
hello[5] = '\0';
|
|
</verb>
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>strrchr<label id="strrchr"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Search for a character in a string.
|
|
<tag/Header/<tt/<ref id="string.h" name="string.h">/
|
|
<tag/Declaration/<tt/char* __fastcall__ strrchr (const char* s, int c);/
|
|
<tag/Description/The <tt/strrchr/ function locates the last occurrence of <tt/c/
|
|
(converted to a char) in the string pointed to by <tt/s/. The terminating null
|
|
byte is considered to be part of the string. Upon completion, the function
|
|
returns a pointer to the byte, or a null pointer if the byte was not found.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="strchr" name="strchr">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>strupper<label id="strupper"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Make a string upper case.
|
|
<tag/Header/<tt/<ref id="string.h" name="string.h">/
|
|
<tag/Declaration/<tt/char* __fastcall__ strupper (char* s);/
|
|
<tag/Description/The <tt/strupper/ function will apply the <tt/toupper/
|
|
function to each character of a string. The function will always return <tt/s/.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
<item>The function prototype is unavailable when compiling in strict ANSI mode.
|
|
<item>An alias name for this function is <tt/strupr/.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="strlower" name="strlower">
|
|
<ref id="toupper" name="toupper">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>strupr<label id="strupr"><p>
|
|
|
|
<quote>
|
|
See <tt/strupper/.
|
|
</quote>
|
|
|
|
|
|
<sect1>textcolor<label id="textcolor"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Set the text color.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/unsigned char __fastcall__ textcolor (unsigned char color);/
|
|
<tag/Description/The function will set a new text color. It returns the old
|
|
(current) text color. Text output using any <tt/conio.h/ function will use
|
|
the color set by this function.
|
|
<tag/Limits/<itemize>
|
|
<item>Text colors are system dependent. The function may have no effect
|
|
on systems where the text color cannot be changed.
|
|
<item>The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="bgcolor" name="bgcolor">,
|
|
<ref id="bordercolor" name="bordercolor">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>tolower<label id="tolower"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Convert a character into its lower case representation.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ tolower (int c);/
|
|
<tag/Description/The function returns the given character converted to lower
|
|
case. If the given character is not a letter, it is returned unchanged.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="toupper" name="toupper">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>toupper<label id="toupper"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Convert a character into its upper case representation.
|
|
<tag/Header/<tt/<ref id="ctype.h" name="ctype.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ toupper (int c);/
|
|
<tag/Description/The function returns the given character converted to upper
|
|
case. If the given character is not a letter, it is returned unchanged.
|
|
<tag/Limits/<itemize>
|
|
<item>The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype.
|
|
</itemize>
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="tolower" name="tolower">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>wherex<label id="wherex"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Return the current X position of the text mode cursor.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/unsigned char wherex (void);/
|
|
<tag/Description/The function returns the current X position of the text mode
|
|
cursor. Zero is returned for the leftmost screen position.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="gotox" name="gotox">,
|
|
<ref id="gotoy" name="gotoy">,
|
|
<ref id="gotoxy" name="gotoxy">,
|
|
<ref id="wherey" name="wherey">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>wherey<label id="wherey"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Return the current Y position of the text mode cursor.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/unsigned char wherey (void);/
|
|
<tag/Description/The function returns the current Y position of the text mode
|
|
cursor. Zero is returned for the uppermost screen position.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="gotox" name="gotox">,
|
|
<ref id="gotoy" name="gotoy">,
|
|
<ref id="gotoxy" name="gotoxy">,
|
|
<ref id="wherex" name="wherex">
|
|
<tag/Example/None.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
</article>
|
|
|
|
|