mirror of
https://github.com/cc65/cc65.git
synced 2024-12-23 19:29:37 +00:00
1221 lines
42 KiB
Plaintext
1221 lines
42 KiB
Plaintext
<!doctype linuxdoc system>
|
|
|
|
<article>
|
|
<title>cc65 function reference
|
|
<author>Ullrich von Bassewitz, <htmlurl url="mailto:uz@cc65.org" name="uz@cc65.org">
|
|
<date>07.11.2002
|
|
|
|
<abstract>
|
|
cc65 is a C compiler for 6502 based systems. This function reference describes
|
|
the available C functions supplied by the library.
|
|
</abstract>
|
|
|
|
<!-- Table of contents -->
|
|
<toc>
|
|
|
|
<!-- Begin the document -->
|
|
|
|
<sect>Introduction<p>
|
|
|
|
cc65 is a C compiler for 6502 based systems. It implements a subset of the ISO
|
|
C standard plus additional functions specially crafted for 6502 systems or
|
|
just some of the supported machines. This function refrence describes the
|
|
available functions together with any limitations.
|
|
|
|
<bf/Note:/ Standard C functions are listed here, but not described in detail.
|
|
Since these functions behave identical on all standard compliant systems, they
|
|
are described in any book covering standard C.
|
|
|
|
Each entry for a function contains a detailed description
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Summary of what <bf/function/ does.
|
|
<tag/Header/The header file that contains the declaration.
|
|
<tag/Declaration/Describes the needed header files and declaration of the
|
|
function.
|
|
<tag/Description/Description of the function.
|
|
<tag/Limits/Limits.
|
|
<tag/Availability/The availability of the function.
|
|
<tag/See also/Other related functions.
|
|
<tag/Example/A piece of actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect>Functions by header file<p>
|
|
|
|
<sect1><tt/6502.h/<label id="6502.h"><p>
|
|
|
|
<itemize>
|
|
<item><ref id="BRK" name="BRK">
|
|
<item><ref id="CLI" name="CLI">
|
|
<item><ref id="SEI" name="SEI">
|
|
<!-- <item><ref id="_sys" name="_sys"> -->
|
|
<!-- <item><ref id="getcpu" name="getcpu"> -->
|
|
<!-- <item><ref id="reset_brk" name="reset_brk"> -->
|
|
<!-- <item><ref id="set_brk" name="set_brk"> -->
|
|
</itemize>
|
|
|
|
|
|
<sect1><tt/assert.h/<label id="assert.h"><p>
|
|
|
|
<itemize>
|
|
<item><ref id="assert" name="assert">
|
|
</itemize>
|
|
|
|
|
|
<sect1><tt/conio.h/<label id="conio.h"><p>
|
|
|
|
<itemize>
|
|
<item><ref id="bgcolor" name="bgcolor">
|
|
<item><ref id="bordercolor" name="bordercolor">
|
|
<item><ref id="cclear" name="cclear">
|
|
<item><ref id="cclearxy" name="cclearxy">
|
|
<item><ref id="cgetc" name="cgetc">
|
|
<item><ref id="chline" name="chline">
|
|
<item><ref id="chlinexy" name="chlinexy">
|
|
<item><ref id="clrscr" name="clrscr">
|
|
<!-- <item><ref id="cprintf" name="cprintf"> -->
|
|
<!-- <item><ref id="cputc" name="cputc"> -->
|
|
<!-- <item><ref id="cputcxy" name="cputcxy"> -->
|
|
<!-- <item><ref id="cputs" name="cputs"> -->
|
|
<!-- <item><ref id="cputsxy" name="cputsxy"> -->
|
|
<item><ref id="cursor" name="cursor">
|
|
<item><ref id="cvline" name="cvline">
|
|
<item><ref id="cvlinexy" name="cvlinexy">
|
|
<item><ref id="gotox" name="gotox">
|
|
<item><ref id="gotoxy" name="gotoxy">
|
|
<item><ref id="gotoy" name="gotoy">
|
|
<item><ref id="kbhit" name="kbhit">
|
|
<item><ref id="revers" name="revers">
|
|
<item><ref id="screensize" name="screensize">
|
|
<item><ref id="textcolor" name="textcolor">
|
|
<!-- <item><ref id="vcprintf" name="vcprintf"> -->
|
|
<item><ref id="wherex" name="wherex">
|
|
<item><ref id="wherey" name="wherey">
|
|
</itemize>
|
|
|
|
|
|
<sect1><tt/ctype.h/<label id="ctype.h"><p>
|
|
|
|
<itemize>
|
|
<item><ref id="isalnum" name="isalnum">
|
|
<item><ref id="isalpha" name="isalpha">
|
|
<item><ref id="isascii" name="isascii">
|
|
<item><ref id="isblank" name="isblank">
|
|
<item><ref id="iscntrl" name="iscntrl">
|
|
<item><ref id="isdigit" name="isdigit">
|
|
<item><ref id="isgraph" name="isgraph">
|
|
<item><ref id="islower" name="islower">
|
|
<item><ref id="isprint" name="isprint">
|
|
<item><ref id="ispunct" name="ispunct">
|
|
<item><ref id="isspace" name="isspace">
|
|
<item><ref id="isupper" name="isupper">
|
|
<item><ref id="isxdigit" name="isxdigit">
|
|
<item><ref id="tolower" name="tolower">
|
|
<item><ref id="toupper" name="toupper">
|
|
</itemize>
|
|
|
|
|
|
<sect1><tt/stdlib.h/<label id="stdlib.h"><p>
|
|
|
|
<itemize>
|
|
<item><ref id="abort" name="abort">
|
|
<item><ref id="atexit" name="atexit">
|
|
<item><ref id="exit" name="exit">
|
|
</itemize>
|
|
|
|
|
|
|
|
|
|
<sect>Alphabetical function reference<p>
|
|
|
|
<sect1>BRK<label id="BRK"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Insert a 6502 BRK instrunction into the code.
|
|
<tag/Header/<tt/<ref id="6502.h" name="6502.h">/
|
|
<tag/Declaration/<tt/void BRK (void);/
|
|
<tag/Description/The function will insert a 6502 BRK instruction into the code
|
|
which may be used to trigger a debugger.
|
|
<tag/Limits/The function is actually a macro. The inserted instruction may lead
|
|
to unexpected results if no debugger is present.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="CLI" name="CLI">,
|
|
<ref id="SEI" name="SEI">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>CLI<label id="CLI"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Insert a 6502 CLI instrunction into the code.
|
|
<tag/Header/<tt/<ref id="6502.h" name="6502.h">/
|
|
<tag/Declaration/<tt/void CLI (void);/
|
|
<tag/Description/The function will insert a 6502 CLI instruction into the code,
|
|
so interrupts are disabled. Note that non maskable interrupts cannot be
|
|
disabled.
|
|
<tag/Limits/The function is actually a macro. Disabling interrupts may lead to
|
|
unexpected results.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="BRK" name="BRK">,
|
|
<ref id="SEI" name="SEI">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>SEI<label id="SEI"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Insert a 6502 SEI instrunction into the code.
|
|
<tag/Header/<tt/<ref id="6502.h" name="6502.h">/
|
|
<tag/Declaration/<tt/void SEI (void);/
|
|
<tag/Description/The function will insert a 6502 SEI instruction into the code,
|
|
so interrupts are enabled. Enabling interrupts has no effects if they are
|
|
already enabled (the default).
|
|
<tag/Limits/The function is actually a macro.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="BRK" name="BRK">,
|
|
<ref id="CLI" name="CLI">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>abort<label id="abort"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Terminates a program abnormally.
|
|
<tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
|
|
<tag/Declaration/<tt/void abort (void);/
|
|
<tag/Description/<tt/abort/ writes a termination message on stderr, then
|
|
terminates the program with an exit code of 3.
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="assert" name="assert">,
|
|
<ref id="exit" name="exit">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>assert<label id="assert"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Test a condition and possibly abort.
|
|
<tag/Header/<tt/<ref id="assert.h" name="assert.h">/
|
|
<tag/Declaration/<tt/void assert (int cond);/
|
|
<tag/Description/<tt/assert/ is a macro that expands to a <tt/id/
|
|
statement. If the condition evaluates t zero (false), assert prints a message
|
|
on stderr and aborts the program.
|
|
<tag/Limits/The function is actually a macro.
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="abort" name="abort">,
|
|
<ref id="exit" name="exit">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>atexit<label id="atexit"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Register an exit function.
|
|
<tag/Header/<tt/<ref id="stdlib.h" name="stdlib.h">/
|
|
<tag/Declaration/<tt/int __fastcall__ atexit (void (*exitfunc) (void));/
|
|
<tag/Description/<tt/atexit/ registers the function pointed to by
|
|
<tt/exitfunc/ as an exit function. Exit functions are called when the program
|
|
terminates, they are called in LIFO order (the last function registered is
|
|
called first). <tt/atexit/ returns zero on success and a nonzero value on
|
|
failure.
|
|
<tag/Limits/A maximum of 5 exit functions can be registered. There is no way
|
|
to unregister an exit function. The function is only available as fastcall
|
|
function, so it may only be used in presence of a prototype.
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="abort" name="abort">,
|
|
<ref id="exit" name="exit">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>bgcolor<label id="bgcolor"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Set the background text color.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/unsigned char __fastcall__ bgcolor (unsigned char color);/
|
|
<tag/Description/The function will set a new background text color. It returns
|
|
the old (current) background color.
|
|
<tag/Limits/Background colors are system dependent. The function may have no effect
|
|
on systems where the background color cannot be changed. The function is only
|
|
available as fastcall function, so it may only be used in presence of a
|
|
prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="bordercolor" name="bordercolor">,
|
|
<ref id="textcolor" name="textcolor">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>bordercolor<label id="bordercolor"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Set the border (frame) color.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/unsigned char __fastcall__ bordercolor (unsigned char color);/
|
|
<tag/Description/The function will set a new border color. It returns the old
|
|
(current) border color.
|
|
<tag/Limits/Border colors are system dependent. The function may have no effect
|
|
on systems where the border color cannot be changed. The function is only
|
|
available as fastcall function, so it may only be used in presence of a
|
|
prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="bgcolor" name="bgcolor">,
|
|
<ref id="textcolor" name="textcolor">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>cclear<label id="cclear"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Clear part of a line (write a given amount of spaces).
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ cclear (unsigned char length);/
|
|
<tag/Description/The function clears part of a line by writing <tt/length/
|
|
spaces in the current text color.
|
|
<tag/Limits/The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="cclearxy" name="cclearxy">,
|
|
<ref id="clrscr" name="clrscr">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>cclearxy<label id="cclearxy"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Clear part of a line (write a given amount of spaces) starting
|
|
at a specific screen position.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ cclearxy (unsigned char length);/
|
|
<tag/Description/The function moves the cursor to a specific position, and
|
|
will then clear part of the line by writing <tt/length/ spaces in the current
|
|
text color.
|
|
<tag/Limits/The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="cclear" name="cclear">,
|
|
<ref id="clrscr" name="clrscr">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>cgetc<label id="cgetc"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Read a character from the keyboard.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/char cgetc (void);/
|
|
<tag/Description/The function reads a character from the keyboard. If there is
|
|
no character available, <tt/cgetc/ waits until the user presses a key. If the
|
|
cursor is enabled by use of the <tt/cursor/ function, a blinking cursor is
|
|
displayed while waiting.
|
|
<tag/Limits/If the system supports a keyboard buffer, <tt/cgetc/ will fetch a
|
|
key from this buffer and wait only if the buffer is empty.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="cursor" name="cursor">,
|
|
<ref id="kbhit" name="kbhit">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>chline<label id="chline"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Output a horizontal line in text mode.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ chline (unsigned char length);/
|
|
<tag/Description/The function outputs a horizontal line with the given length
|
|
starting at the current cursor position.
|
|
<tag/Limits/The character used to draw the horizontal line is system dependent.
|
|
If available, a line drawing character is used. Drawing a line that is partially
|
|
off screen leads to undefined behaviour. The function is only available
|
|
as fastcall function, so it may only be used in presence of a prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="chlinexy" name="chlinexy">,
|
|
<ref id="cvline" name="cvline">,
|
|
<ref id="cvlinexy" name="cvlinexy">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<sect1>chlinexy<label id="chlinexy"><p>
|
|
|
|
<quote>
|
|
<descrip>
|
|
<tag/Function/Output a horizontal line at a given position in text mode.
|
|
<tag/Header/<tt/<ref id="conio.h" name="conio.h">/
|
|
<tag/Declaration/<tt/void __fastcall__ chlinexy (unsigned char x, unsigned char y, unsigned char length);/
|
|
<tag/Description/The function outputs a horizontal line with the given length
|
|
starting at a given position.
|
|
<tag/Limits/The character used to draw the horizontal line is system dependent.
|
|
If available, a line drawing character is used. Drawing a line that is partially
|
|
off screen leads to undefined behaviour. The function is only available
|
|
as fastcall function, so it may only be used in presence of a prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="chline" name="chline">,
|
|
<ref id="cvline" name="cvline">,
|
|
<ref id="cvlinexy" name="cvlinexy">
|
|
<tag/Example/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
<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/Actual code using the function.
|
|
</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/The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="cgetc" name="cgetc">,
|
|
<ref id="kbhit" name="kbhit">
|
|
<tag/Example/Actual code using the function.
|
|
</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/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. The function is only available
|
|
as fastcall function, so it may only be used in presence of a prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="chline" name="chline">,
|
|
<ref id="chlinexy" name="chlinexy">,
|
|
<ref id="cvlinexy" name="cvlinexy">
|
|
<tag/Example/Actual code using the function.
|
|
</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/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. The function is only available
|
|
as fastcall function, so it may only be used in presence of a prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="chline" name="chline">,
|
|
<ref id="chlinexy" name="chlinexy">,
|
|
<ref id="cvline" name="cvline">
|
|
<tag/Example/Actual code using the function.
|
|
</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/The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype. It depends on the host machine if the
|
|
program return code can be evaluated or is ignored.
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="abort" name="abort">,
|
|
<ref id="exit" name="exit">
|
|
<tag/Example/Actual code using the function.
|
|
</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/The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype. Invalid values for the X position
|
|
(out of screen coordinates) may lead to undefined behaviour.
|
|
<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/Actual code using the function.
|
|
</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/The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype. Invalid values for any of both
|
|
coordinates (out of screen positions) may lead to undefined behaviour.
|
|
<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/Actual code using the function.
|
|
</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/The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype. Invalid values for the Y position
|
|
(out of screen coordinates) may lead to undefined behaviour.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/When compiling with <tt/-Os/ the function is actually a macro. The
|
|
generated inline sequence 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. When compiling
|
|
without <tt/-Os/, the function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</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/If the system does not support a keyboard buffer (most systems
|
|
do), the function is rather useless.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="cgetc" name="cgetc">,
|
|
<ref id="cursor" name="cursor">
|
|
<tag/Example/Actual code using the function.
|
|
</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/The function may not be supported by the hardware, in which case
|
|
the call is ignored. The function is only available as fastcall function, so it
|
|
may only be used in presence of a prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="textcolor" name="textcolor">
|
|
<tag/Example/Actual code using the function.
|
|
</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/The function is only available as fastcall function, so it may only
|
|
be used in presence of a prototype.
|
|
<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/Actual code using the function.
|
|
</descrip>
|
|
</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/Text colors are system dependent. The function may have no effect
|
|
on systems where the text color cannot be changed. The function is only
|
|
available as fastcall function, so it may only be used in presence of a
|
|
prototype.
|
|
<tag/Availability/cc65
|
|
<tag/See also/
|
|
<ref id="bgcolor" name="bgcolor">,
|
|
<ref id="bordercolor" name="bordercolor">
|
|
<tag/Example/Actual code using the function.
|
|
</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/The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype.
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="toupper" name="toupper">
|
|
<tag/Example/Actual code using the function.
|
|
</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/The function is only available as fastcall function, so it may
|
|
only be used in presence of a prototype.
|
|
<tag/Availability/ISO 9899
|
|
<tag/See also/
|
|
<ref id="islower" name="islower">,
|
|
<ref id="isupper" name="isupper">,
|
|
<ref id="tolower" name="tolower">
|
|
<tag/Example/Actual code using the function.
|
|
</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/Actual code using the function.
|
|
</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/Actual code using the function.
|
|
</descrip>
|
|
</quote>
|
|
|
|
|
|
</article>
|
|
|
|
|