mirror of
https://github.com/inexorabletash/jsbasic.git
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Support left/alt right for apple keys. TOC/doc fixes
This commit is contained in:
Joshua Bell
615
reference.htm
615
reference.htm
@ -13,6 +13,7 @@ a:hover { text-decoration: underline; }
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code, .code, dt { font-family: 'Lucida Console', 'Courier New', Courier, monospace; font-weight: bold; color: #406040; }
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code, .code, dt { font-family: 'Lucida Console', 'Courier New', Courier, monospace; font-weight: bold; color: #406040; }
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h1 { margin-top: 0; }
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h1 { margin-top: 0; }
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h2 { border-top: solid 2px black; border-bottom: solid 2px black; }
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h2 { border-top: solid 2px black; border-bottom: solid 2px black; }
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pre.code { margin: 12pt; }
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.nyi { opacity: 0.65; }
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.nyi { opacity: 0.65; }
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@ -28,7 +29,7 @@ This is intended as a quick reference for the <a href="index.htm">Applesoft BASI
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</p>
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</p>
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<p>
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<p>
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<a href="#Extensions">Extensions</a> beyond Applesoft BASIC are called out with footnotes.
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<a href="#extensions">Extensions</a> beyond Applesoft BASIC are called out with footnotes.
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</p>
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</p>
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<p>See also:</p>
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<p>See also:</p>
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@ -40,7 +41,7 @@ This is intended as a quick reference for the <a href="index.htm">Applesoft BASI
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</ul>
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</ul>
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</section>
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</section>
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<section id="Statements">
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<section id="statements">
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<!-- ================================================== -->
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<!-- ================================================== -->
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<h2>Statements</h2>
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<h2>Statements</h2>
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<!-- ================================================== -->
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<!-- ================================================== -->
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@ -48,172 +49,172 @@ This is intended as a quick reference for the <a href="index.htm">Applesoft BASI
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<section>
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<section>
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<h3>Variable Control</h3>
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<h3>Variable Control</h3>
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<dl>
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<dl>
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<dt>CLEAR<dd>Clear all variables
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<dt>CLEAR<dd>Clear all variables
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<dt>[LET] <var>var</var> = <var>expr</var><dd>Assign variable
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<dt>[LET] <var>var</var> = <var>expr</var><dd>Assign variable
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<dt>DIM <var>var</var>( <var>size</var> [ , <var>size2</var> ...] ) [ , <var>var2</var>( <var>size</var> [ , <var>size2</var> ...] ) ... ] <dd>Allocate array
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<dt>DIM <var>var</var>( <var>size</var> [ , <var>size2</var> ...] ) [ , <var>var2</var>( <var>size</var> [ , <var>size2</var> ...] ) ... ] <dd>Allocate array
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<dt>DEF FN <var>f</var>(<var>var</var> ) = <var>expr</var><dd>Define function of a single variable <a href="#Extension_StringFuncs">[1]</a>
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<dt>DEF FN <var>f</var>(<var>var</var> ) = <var>expr</var><dd>Define function of a single variable <a href="#def_fn_string">[1]</a>
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</dl>
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</dl>
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</section>
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</section>
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<section>
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<section>
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<h3>Flow Control</h3>
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<h3>Flow Control</h3>
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<dl>
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<dl>
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<dt>GOTO<dd>Go to line number
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<dt>GOTO<dd>Go to line number
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<dt>GOSUB <var>line</var><dd>Go to subroutine
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<dt>GOSUB <var>line</var><dd>Go to subroutine
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<dt>RETURN<dd>Return from subroutine
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<dt>RETURN<dd>Return from subroutine
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<dt>ON <var>expr</var> GOTO <var>line</var> [, <var>line2</var> ... ]<dd>Branch based on index (value = 1, 2, ...)
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<dt>ON <var>expr</var> GOTO <var>line</var> [, <var>line2</var> ... ]<dd>Branch based on index (value = 1, 2, ...)
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<dt>ON <var>expr</var> GOSUB <var>line</var> [, <var>line2</var> ... ]<dd>Subroutine branch based on index (value = 1, 2, ...)
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<dt>ON <var>expr</var> GOSUB <var>line</var> [, <var>line2</var> ... ]<dd>Subroutine branch based on index (value = 1, 2, ...)
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<dt>POP<dd>Convert last gosub into a goto
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<dt>POP<dd>Convert last gosub into a goto
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<dt>FOR <var>var</var> = <var>start</var> TO <var>end</var> [ STEP <var>incr</var> ]<dd>Loop with counter variable
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<dt>FOR <var>var</var> = <var>start</var> TO <var>end</var> [ STEP <var>incr</var> ]<dd>Loop with counter variable
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<dt>NEXT [<var>var</var> [, <var>var</var> ...] ]<dd>End of loop(s)
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<dt>NEXT [<var>var</var> [, <var>var</var> ...] ]<dd>End of loop(s)
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<dt>IF <var>expr</var> THEN <var>statement</var><br />IF <var>expr</var> GOTO <var>line</var><dd>Conditional; if expr is false, rest of line is skipped
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<dt>IF <var>expr</var> THEN <var>statement</var><br />IF <var>expr</var> GOTO <var>line</var><dd>Conditional; if expr is false, rest of line is skipped
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<dt>END<dd>Terminate program
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<dt>END<dd>Terminate program
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<dt>STOP<dd>Break, as if an error occurred
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<dt>STOP<dd>Break, as if an error occurred
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</dl>
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</dl>
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</section>
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</section>
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<section>
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<section>
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<h3>Error Handling</h3>
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<h3>Error Handling</h3>
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<dl>
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<dl>
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<dt>ONERR GOTO <var>line</var><dd>Set error hook
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<dt>ONERR GOTO <var>line</var><dd>Set error hook
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<dt>RESUME<dd>Retry line that caused ONERR GOTO
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<dt>RESUME<dd>Retry line that caused ONERR GOTO
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</dl>
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</dl>
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</section>
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</section>
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<section>
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<section>
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<h3>Input/Output</h3>
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<h3>Input/Output</h3>
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<dl>
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<dl>
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<dt>PRINT <var>expr</var> [ [;,] <var>expr2</var> ... ] [;]<dd>Output text
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<dt>PRINT <var>expr</var> [ [;,] <var>expr2</var> ... ] [;]<dd>Output text
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<dt>INPUT [<var>string</var> ;] <var>var</var> [, <var>var2</var> ... ]<dd>Read line of input
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<dt>INPUT [<var>string</var> ;] <var>var</var> [, <var>var2</var> ... ]<dd>Read line of input
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<dt>GET <var>var</var><dd>Read single key
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<dt>GET <var>var</var><dd>Read single key
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<dt>HOME<dd>Clear text display
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<dt>HOME<dd>Clear text display
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<dt>HTAB <var>expr</var><dd>Position text cursor horizontally
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<dt>HTAB <var>expr</var><dd>Position text cursor horizontally
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<dt>VTAB <var>expr</var><dd>Position text cursor vertically
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<dt>VTAB <var>expr</var><dd>Position text cursor vertically
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<dt>INVERSE<dd>Set output mode to black-on-white
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<dt>INVERSE<dd>Set output mode to black-on-white
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<dt>FLASH<dd>Set output mode to flashing
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<dt>FLASH<dd>Set output mode to flashing
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<dt>NORMAL<dd>Set output mode to white-on-black
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<dt>NORMAL<dd>Set output mode to white-on-black
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<dt>TEXT<dd>Set display to text mode
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<dt>TEXT<dd>Set display to text mode
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</dl>
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</dl>
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</section>
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</section>
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<section>
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<section>
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<h3>Miscellaneous</h3>
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<h3>Miscellaneous</h3>
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<dl>
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<dl>
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<dt>REM [ <var>comment</var> ]<dd>Begin a comment; rest of line is skipped
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<dt>REM [ <var>comment</var> ]<dd>Begin a comment; rest of line is skipped
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<dt>TRACE<dd>Turn on trace mode (line numbers printed)
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<dt>TRACE<dd>Turn on trace mode (line numbers printed)
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<dt>NOTRACE<dd>Turn off trace mode
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<dt>NOTRACE<dd>Turn off trace mode
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</dl>
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</dl>
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</section>
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</section>
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<section>
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<section>
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<h3>Inline Data</h3>
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<h3>Inline Data</h3>
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<dl>
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<dl>
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<dt>DATA <var>value</var> [, <var>value2</var> ... ]<dd>Define inline data
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<dt>DATA <var>value</var> [, <var>value2</var> ... ]<dd>Define inline data
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<dt>READ <var>var</var> [, <var>var2</var> ... ]<dd>Read the next DATA value
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<dt>READ <var>var</var> [, <var>var2</var> ... ]<dd>Read the next DATA value
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<dt>RESTORE<dd>Restore the DATA pointer to the first value
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<dt>RESTORE<dd>Restore the DATA pointer to the first value
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</dl>
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</dl>
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</section>
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</section>
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<section>
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<section>
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<h3>Lo-Res Graphics</h3>
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<h3>Lo-Res Graphics</h3>
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<dl>
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<dl>
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<dt>GR<dd>Set display to lores mode, clear screen
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<dt>GR<dd>Set display to lores mode, clear screen
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<dt>COLOR= <var>expr</var><dd>Set lores color (0...15)
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<dt>COLOR= <var>expr</var><dd>Set lores color (0...15)
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<dt>PLOT <var>expr</var>, <var>expr</var><dd>Plot lores point (x = 0...39, y = 0...39/47)
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<dt>PLOT <var>expr</var>, <var>expr</var><dd>Plot lores point (x = 0...39, y = 0...39/47)
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<dt>HLIN <var>expr</var>, <var>expr</var> AT <var>expr</var><dd>Plot horizontal line (x1, x2 at y)
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<dt>HLIN <var>expr</var>, <var>expr</var> AT <var>expr</var><dd>Plot horizontal line (x1, x2 at y)
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<dt>VLIN <var>expr</var>, <var>expr</var> AT <var>expr</var><dd>Plot vertical line (y1, y2 at x)
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<dt>VLIN <var>expr</var>, <var>expr</var> AT <var>expr</var><dd>Plot vertical line (y1, y2 at x)
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</dl>
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</dl>
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</section>
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</section>
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<section>
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<section>
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<h3>Hi-Res Graphics</h3>
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<h3>Hi-Res Graphics</h3>
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<dl>
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<dl>
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<dt>HGR<dd>Set display to hires mode, clear screen
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<dt>HGR<dd>Set display to hires mode, clear screen
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<dt>HGR2<dd>Set display to hires mode (page 2), clear screen
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<dt>HGR2<dd>Set display to hires mode (page 2), clear screen
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<dt>HPLOT [TO] <var>expr</var>, <var>expr</var> [ TO <var>expr</var>, <var>expr</var> ] ... <dd>Plot hires point/line (x=0...279, y=0...191)
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<dt>HPLOT [TO] <var>expr</var>, <var>expr</var> [ TO <var>expr</var>, <var>expr</var> ] ... <dd>Plot hires point/line (x=0...279, y=0...191)
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<dt>HCOLOR= <var>expr</var><dd>Set hires color (0...7)
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<dt>HCOLOR= <var>expr</var><dd>Set hires color (0...7)
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</dl>
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</dl>
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</section>
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</section>
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<section class="nyi">
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<section class="nyi">
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<h3>Hi-Res Shape Tables <var>- NOT IMPLEMENTED</var></h3>
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<h3>Hi-Res Shape Tables <var>- NOT IMPLEMENTED</var></h3>
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<dl>
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<dl>
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<dt>ROT= <var>expr</var><dd>Set hires shape table rotation (0...63)
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<dt>ROT= <var>expr</var><dd>Set hires shape table rotation (0...63)
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<dt>SCALE= <var>expr</var><dd>Set hires shape table scale (1...255)
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<dt>SCALE= <var>expr</var><dd>Set hires shape table scale (1...255)
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<dt>DRAW <var>expr</var> [ AT <var>expr</var>, <var>expr</var> ]<dd>Draw hires shape table shape in color
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<dt>DRAW <var>expr</var> [ AT <var>expr</var>, <var>expr</var> ]<dd>Draw hires shape table shape in color
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<dt>XDRAW <var>expr</var> [ AT <var>expr</var>, <var>expr</var> ]<dd>Draw hires shape table shape with XOR
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<dt>XDRAW <var>expr</var> [ AT <var>expr</var>, <var>expr</var> ]<dd>Draw hires shape table shape with XOR
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</dl>
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</dl>
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</section>
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</section>
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<section class="nyi">
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<section class="nyi">
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<h3>Interpreter and Program State <var>- NOT IMPLEMENTED</var></h3>
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<h3>Interpreter and Program State <var>- NOT IMPLEMENTED</var></h3>
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<dl>
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<dl>
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<dt>CONT<dd>Continue from a STOP
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<dt>CONT<dd>Continue from a STOP
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<dt>DEL<dd>Delete lines of program
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<dt>DEL<dd>Delete lines of program
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<dt>LIST [ <var>expr</var> [, <var>expr</var> ] ]<dd>List lines of program
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<dt>LIST [ <var>expr</var> [, <var>expr</var> ] ]<dd>List lines of program
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<dt>NEW<dd>Clear program and variables
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<dt>NEW<dd>Clear program and variables
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<dt>RUN [ <var>expr</var> ]<dd>Start program execution at line
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<dt>RUN [ <var>expr</var> ]<dd>Start program execution at line
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</dl>
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</dl>
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</section>
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</section>
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<section class="nyi">
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<section class="nyi">
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<h3>Native Platform Interaction <var>- NOT IMPLEMENTED</var></h3>
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<h3>Native Platform Interaction <var>- NOT IMPLEMENTED</var></h3>
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<dl>
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<dl>
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<dt>HIMEM: <var>expr</var><dd>Set upper address of variable memory
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<dt>HIMEM: <var>expr</var><dd>Set upper address of variable memory
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<dt>IN# <var>expr</var><dd>Direct input from slot
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<dt>IN# <var>expr</var><dd>Direct input from slot
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<dt>LOMEM: <var>expr</var><dd>Set lower address of variable memory
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<dt>LOMEM: <var>expr</var><dd>Set lower address of variable memory
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<dt>WAIT <var>expr</var>, <var>expr</var> [, <var>expr</var>]<dd>Wait until memory location masked by second argument equals third argument (or zero)
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<dt>WAIT <var>expr</var>, <var>expr</var> [, <var>expr</var>]<dd>Wait until memory location masked by second argument equals third argument (or zero)
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</dl>
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</dl>
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</section>
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</section>
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<section class="nyi">
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<section class="nyi">
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<h3>Cassette Tape <var>- NOT IMPLEMENTED</var></h3>
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<h3>Cassette Tape <var>- NOT IMPLEMENTED</var></h3>
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<dl>
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<dl>
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<dt>LOAD<dd>Load program from cassette
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<dt>LOAD<dd>Load program from cassette
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<dt>RECALL<dd>Load variables from cassette
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<dt>RECALL<dd>Load variables from cassette
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<dt>SAVE<dd>Save program to cassette
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<dt>SAVE<dd>Save program to cassette
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<dt>STORE<dd>Save variables to cassette
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<dt>STORE<dd>Save variables to cassette
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<dt>SHLOAD<dd>Load hires shape table from cassette
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<dt>SHLOAD<dd>Load hires shape table from cassette
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</dl>
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</dl>
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</section>
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</section>
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<section id="Compatibility_Shims">
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<section id="shims">
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<h3>Compatibility Shims</h3>
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<h3>Compatibility Shims</h3>
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<dl>
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<dl>
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<dt>SPEED= <var>expr</var><dd>Set character output delay - <em>has no effect</em>
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<dt>SPEED= <var>expr</var><dd>Set character output delay - <em>has no effect</em>
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<dt id="Poke">POKE <var>expr</var>, <var>expr</var><dd>Set memory location to value
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<dt>POKE <var>expr</var>, <var>expr</var><dd>Set memory location to value
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<ul>
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<ul>
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<li><code>POKE 32,<var>n</var></code> - Text window left edge
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<li><code>POKE 32,<var>n</var></code> - Text window left edge
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<li><code>POKE 33,<var>n</var></code> - Text window width
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<li><code>POKE 33,<var>n</var></code> - Text window width
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<li><code>POKE 34,<var>n</var></code> - Text window top edge
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<li><code>POKE 34,<var>n</var></code> - Text window top edge
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<li><code>POKE 35,<var>n</var></code> - Text window bottom
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<li><code>POKE 35,<var>n</var></code> - Text window bottom
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<li><code>POKE 36,<var>n</var></code> - Text cursor x
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<li><code>POKE 36,<var>n</var></code> - Text cursor x
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<li><code>POKE 37,<var>n</var></code> - Text cursor y
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<li><code>POKE 37,<var>n</var></code> - Text cursor y
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<li><code>POKE 216,<var>n</var></code> - ONERR flag (<var>n</var> < 128 disables ONERR handler)
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<li><code>POKE 216,<var>n</var></code> - ONERR flag (<var>n</var> < 128 disables ONERR handler)
|
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<li><code>POKE 230,<var>n</var></code> - Hi-Res plotting page (32 = page 1, 64 = page 2)
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<li><code>POKE 230,<var>n</var></code> - Hi-Res plotting page (32 = page 1, 64 = page 2)
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<li><code>POKE 49168,0</code> - clear keyboard strobe
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<li><code>POKE 49168,0</code> - clear keyboard strobe
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<li><code>POKE 49200,0</code> - toggle speaker (no-op)
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<li><code>POKE 49200,0</code> - toggle speaker (no-op)
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<li><code>POKE 49232,0</code> - graphics mode
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<li><code>POKE 49232,0</code> - graphics mode
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<li><code>POKE 49233,0</code> - text mode
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<li><code>POKE 49233,0</code> - text mode
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<li><code>POKE 49234,0</code> - full graphics
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<li><code>POKE 49234,0</code> - full graphics
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<li><code>POKE 49235,0</code> - split screen
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<li><code>POKE 49235,0</code> - split screen
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<li><code>POKE 49238,0</code> - lores
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<li><code>POKE 49238,0</code> - lores
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<li><code>POKE 49239,0</code> - hires
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<li><code>POKE 49239,0</code> - hires
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</ul>
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</ul>
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||||||
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<dt id="Call">CALL <var>expr</var><dd>Call native routine
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<dt>CALL <var>expr</var><dd>Call native routine
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||||||
<ul>
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<ul>
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<li><code>CALL -3100</code> - reveal hi-res page 1
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<li><code>CALL -3100</code> - reveal hi-res page 1
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<li><code>CALL -3086</code> - clear current hi-res page to black
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<li><code>CALL -3086</code> - clear current hi-res page to black
|
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<li><code>CALL -3082</code> - clear current hi-res page to current color
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<li><code>CALL -3082</code> - clear current hi-res page to current color
|
||||||
<li><code>CALL 54951</code> - clear stack (cancel pending <code>FOR</code>-<code>NEXT</code> loops and <code>GOSUB</code>s)
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<li><code>CALL 54951</code> - clear stack (cancel pending <code>FOR</code>-<code>NEXT</code> loops and <code>GOSUB</code>s)
|
||||||
</ul>
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</ul>
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||||||
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<dt>PR# <var>expr</var><dd>Direct output to slot
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<dt>PR# <var>expr</var><dd>Direct output to slot
|
||||||
<ul>
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<ul>
|
||||||
<li><code>PR#0</code> - set 40 column mode
|
<li><code>PR#0</code> - set 40 column mode
|
||||||
<li><code>PR#3</code> - set 80 column mode
|
<li><code>PR#3</code> - set 80 column mode
|
||||||
</ul>
|
</ul>
|
||||||
|
|
||||||
</dl>
|
</dl>
|
||||||
</section>
|
</section>
|
||||||
@ -226,102 +227,101 @@ This is intended as a quick reference for the <a href="index.htm">Applesoft BASI
|
|||||||
|
|
||||||
<h3>Numeric Functions</h3>
|
<h3>Numeric Functions</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>ABS( <var>expr</var> )<dd>Absolute value of number
|
<dt>ABS( <var>expr</var> )<dd>Absolute value of number
|
||||||
<dt>ATN( <var>expr</var> )<dd>Arctangent of number
|
<dt>ATN( <var>expr</var> )<dd>Arctangent of number
|
||||||
<dt>COS( <var>expr</var> )<dd>Cosine of number
|
<dt>COS( <var>expr</var> )<dd>Cosine of number
|
||||||
<dt>EXP( <var>expr</var> )<dd>Raise e to number
|
<dt>EXP( <var>expr</var> )<dd>Raise e to number
|
||||||
<dt>INT( <var>expr</var> )<dd>Integer part of number
|
<dt>INT( <var>expr</var> )<dd>Integer part of number
|
||||||
<dt>LOG( <var>expr</var> )<dd>Natural log of number
|
<dt>LOG( <var>expr</var> )<dd>Natural log of number
|
||||||
<dt>RND( <var>expr</var> )<dd>Pseudo-random number generator (0 repeats last, negative reseeds)
|
<dt>RND( <var>expr</var> )<dd>Pseudo-random number generator (0 repeats last, negative reseeds)
|
||||||
<dt>SGN( <var>expr</var> )<dd>Sign of number (-1,0,1)
|
<dt>SGN( <var>expr</var> )<dd>Sign of number (-1,0,1)
|
||||||
<dt>SIN( <var>expr</var> )<dd>Sine of number
|
<dt>SIN( <var>expr</var> )<dd>Sine of number
|
||||||
<dt>SQR( <var>expr</var> )<dd>Square root of number
|
<dt>SQR( <var>expr</var> )<dd>Square root of number
|
||||||
<dt>TAN( <var>expr</var> )<dd>Tangent of number
|
<dt>TAN( <var>expr</var> )<dd>Tangent of number
|
||||||
</dl>
|
</dl>
|
||||||
<h3>String Functions</h3>
|
<h3>String Functions</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>LEN( <var>expr</var> )<dd>Length of string
|
<dt>LEN( <var>expr</var> )<dd>Length of string
|
||||||
<dt>LEFT$( <var>expr</var>, <var>expr</var> )<dd>Left portion of (string, length)
|
<dt>LEFT$( <var>expr</var>, <var>expr</var> )<dd>Left portion of (string, length)
|
||||||
<dt>MID$( <var>expr</var>, <var>expr</var> [, <var>expr</var>] )<dd>Substring of (string, start character, length)
|
<dt>MID$( <var>expr</var>, <var>expr</var> [, <var>expr</var>] )<dd>Substring of (string, start character, length)
|
||||||
<dt>RIGHT$( <var>expr</var>, <var>expr</var> )<dd>Right portion of (string, length)
|
<dt>RIGHT$( <var>expr</var>, <var>expr</var> )<dd>Right portion of (string, length)
|
||||||
</dl>
|
</dl>
|
||||||
<h3>Type Conversion Functions</h3>
|
<h3>Type Conversion Functions</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>ASC( <var>expr</var> )<dd>ASCII code for first character of string
|
<dt>ASC( <var>expr</var> )<dd>ASCII code for first character of string
|
||||||
<dt>CHR$( <var>expr</var> )<dd>Character at specified ASCII code point<a href="#Extensions_CHR">[3]</a>
|
<dt>CHR$( <var>expr</var> )<dd>Character at specified ASCII code point<a href="#chr_extras">[3]</a>
|
||||||
<dt>STR$( <var>expr</var> )<dd>String representation of number
|
<dt>STR$( <var>expr</var> )<dd>String representation of number
|
||||||
<dt>VAL( <var>expr</var> )<dd>Parse string into number
|
<dt>VAL( <var>expr</var> )<dd>Parse string into number
|
||||||
</dl>
|
</dl>
|
||||||
<h3>System Interaction Functions</h3>
|
<h3>System Interaction Functions</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>FRE( <var>expr</var> )<dd>Garbage collect strings (returns 0)
|
<dt>FRE( <var>expr</var> )<dd>Garbage collect strings (returns 0)
|
||||||
<dt>PDL( <var>expr</var> )<dd>Paddle position (paddle number)
|
<dt>PDL( <var>expr</var> )<dd>Paddle position (paddle number)
|
||||||
<dt>POS( <var>expr</var> )<dd>Horizontal cursor position
|
<dt>POS( <var>expr</var> )<dd>Horizontal cursor position
|
||||||
<dt>SCRN( <var>expr</var>, <var>expr</var> )<dd>Lores color at pixel (x,y)
|
<dt>SCRN( <var>expr</var>, <var>expr</var> )<dd>Lores color at pixel (x,y)
|
||||||
<dt>HSCRN( <var>expr</var>, <var>expr</var> )<dd>Hires color at pixel (x,y)<a href="#Extension_HSCRN">[4]</a>
|
<dt>HSCRN( <var>expr</var>, <var>expr</var> )<dd>Hires color at pixel (x,y)<a href="#hscrn">[4]</a>
|
||||||
<dt>USR( <var>expr</var> )<dd>Execute assembly code at address, return accumulator value <var>- NOT IMPLEMENTED</var>
|
<dt>USR( <var>expr</var> )<dd>Execute assembly code at address, return accumulator value <var>- NOT IMPLEMENTED</var>
|
||||||
</dl>
|
</dl>
|
||||||
<h3>User Defined Functions</h3>
|
<h3>User Defined Functions</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>FN <var>f</var>( <var>expr</var> )<dd>Execute user defined function <a href="#Extension_StringFuncs">[1]</a>
|
<dt>FN <var>f</var>( <var>expr</var> )<dd>Execute user defined function <a href="#def_fn_string">[1]</a>
|
||||||
</dl>
|
</dl>
|
||||||
|
|
||||||
<h3 id="Function_Compatibility_Shims">Function Compatibility Shims</h3>
|
<h3 id="function_shims">Function Compatibility Shims</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt id="peek">PEEK( <var>expr</var> )<dd>Value at memory location
|
<dt id="peek">PEEK( <var>expr</var> )<dd>Value at memory location
|
||||||
<ul>
|
<ul>
|
||||||
<li><code>PEEK(32)</code> - Text window left edge
|
<li><code>PEEK(32)</code> - Text window left edge
|
||||||
<li><code>PEEK(33)</code> - Text window width
|
<li><code>PEEK(33)</code> - Text window width
|
||||||
<li><code>PEEK(34)</code> - Text window top edge
|
<li><code>PEEK(34)</code> - Text window top edge
|
||||||
<li><code>PEEK(35)</code> - Text window bottom
|
<li><code>PEEK(35)</code> - Text window bottom
|
||||||
<li><code>PEEK(36)</code> - Text cursor x
|
<li><code>PEEK(36)</code> - Text cursor x
|
||||||
<li><code>PEEK(37)</code> - Text cursor y
|
<li><code>PEEK(37)</code> - Text cursor y
|
||||||
<li><code>PEEK(78)</code> & <code>PEEK(79)</code> - Random-Number Field
|
<li><code>PEEK(78)</code> & <code>PEEK(79)</code> - Random-Number Field
|
||||||
<li><code>PEEK(222)</code> - Last error code
|
<li><code>PEEK(222)</code> - Last error code
|
||||||
<li><code>PEEK(230)</code> - Hi-Res plotting page (32 = page 1, 64 = page 2)
|
<li><code>PEEK(230)</code> - Hi-Res plotting page (32 = page 1, 64 = page 2)
|
||||||
<li><code>PEEK(49152)</code> - Read Keyboard
|
<li><code>PEEK(49152)</code> - Read Keyboard
|
||||||
<li><code>PEEK(49168)</code> - Clear Keyboard strobe
|
<li><code>PEEK(49168)</code> - Clear Keyboard strobe
|
||||||
<li><code>PEEK(49200)</code> - Click Speaker (no-op)
|
<li><code>PEEK(49200)</code> - Click Speaker (no-op)
|
||||||
<li><code>PEEK(49248)</code> - Read Paddle Button #3 - <em>Use the PageDown key</em>
|
<li><code>PEEK(49248)</code> - Read Paddle Button #3 - <em>Use the PageDown key</em>
|
||||||
<li><code>PEEK(49249)</code> - Read Paddle Button #0 - <em>Use the Home key</em>
|
<li><code>PEEK(49249)</code> - Read Paddle Button #0 - <em>Use the Home key</em>
|
||||||
<li><code>PEEK(49250)</code> - Read Paddle Button #1 - <em>Use the End key</em>
|
<li><code>PEEK(49250)</code> - Read Paddle Button #1 - <em>Use the End key</em>
|
||||||
<li><code>PEEK(49251)</code> - Read Paddle Button #2 - <em>Use the PageUp or Shift key</em>
|
<li><code>PEEK(49251)</code> - Read Paddle Button #2 - <em>Use the PageUp or Shift key</em>
|
||||||
</ul>
|
</ul>
|
||||||
|
|
||||||
</dl>
|
</dl>
|
||||||
</section>
|
</section>
|
||||||
|
|
||||||
<section id="Operators">
|
<section id="operators">
|
||||||
<!-- ================================================== -->
|
<!-- ================================================== -->
|
||||||
<h2>Operators</h2>
|
<h2>Operators</h2>
|
||||||
<!-- ================================================== -->
|
<!-- ================================================== -->
|
||||||
|
|
||||||
<h3>Comparison Operators</h3>
|
<h3>Comparison Operators</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>=<dd>Equality<a href="#Extensions_DoubleEquals">[2]</a>
|
<dt>=<dd>Equality<a href="#eqeq">[2]</a>
|
||||||
<dt><<dd>Less than
|
<dt><<dd>Less than
|
||||||
<dt>><dd>Greater than
|
<dt>><dd>Greater than
|
||||||
<dt><=<dt>=<<dd>Less than or equal
|
<dt><=<dt>=<<dd>Less than or equal
|
||||||
<dt>>=<dt>=><dd>Greater than or equal
|
<dt>>=<dt>=><dd>Greater than or equal
|
||||||
<dt><><dt>><<dd>Not equal
|
<dt><><dt>><<dd>Not equal
|
||||||
</dl>
|
</dl>
|
||||||
<h3>Boolean Operators</h3>
|
<h3>Boolean Operators</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>AND<dd>Conjunction
|
<dt>AND<dd>Conjunction
|
||||||
<dt>OR<dd>Disjunction
|
<dt>OR<dd>Disjunction
|
||||||
<dt>NOT<dd>Negation
|
<dt>NOT<dd>Negation
|
||||||
</dl>
|
</dl>
|
||||||
<h3>Arithmetic Operators</h3>
|
<h3>Arithmetic Operators</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>^<dd>Exponentiation
|
<dt>^<dd>Exponentiation
|
||||||
<dt>*<dd>Multiplication
|
<dt>*<dd>Multiplication
|
||||||
<dt>/<dd>Division
|
<dt>/<dd>Division
|
||||||
<dt>+<dd>Addition
|
<dt>+<dd>Addition
|
||||||
<dt>-<dd>Subtraction
|
<dt>-<dd>Subtraction
|
||||||
</dl>
|
</dl>
|
||||||
<h3>String Operators</h3>
|
<h3>String Operators</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>+<dd>String Concatenation
|
<dt>+<dd>String Concatenation
|
||||||
</dl>
|
</dl>
|
||||||
</section>
|
</section>
|
||||||
|
|
||||||
@ -333,51 +333,51 @@ This is intended as a quick reference for the <a href="index.htm">Applesoft BASI
|
|||||||
<code>PEEK(222)</code> in an ONERR handler.</p>
|
<code>PEEK(222)</code> in an ONERR handler.</p>
|
||||||
|
|
||||||
<dl>
|
<dl>
|
||||||
<dt>0<dd>Next without for
|
<dt>0<dd>Next without for
|
||||||
<dt>16<dd>Syntax error - <em>Not generated</em>
|
<dt>16<dd>Syntax error - <em>Not generated</em>
|
||||||
<dt>22<dd>Return without gosub
|
<dt>22<dd>Return without gosub
|
||||||
<dt>42<dd>Out of data
|
<dt>42<dd>Out of data
|
||||||
<dt>53<dd>Illegal quantity
|
<dt>53<dd>Illegal quantity
|
||||||
<dt>69<dd>Overflow
|
<dt>69<dd>Overflow
|
||||||
<dt>77<dd>Out of memory - <em>Not generated by all browsers</em>
|
<dt>77<dd>Out of memory - <em>Not generated by all browsers</em>
|
||||||
<dt>90<dd>Undefined statement
|
<dt>90<dd>Undefined statement
|
||||||
<dt>107<dd>Bad subscript
|
<dt>107<dd>Bad subscript
|
||||||
<dt>120<dd>Redimensioned array
|
<dt>120<dd>Redimensioned array
|
||||||
<dt>133<dd>Division by zero
|
<dt>133<dd>Division by zero
|
||||||
<dt>163<dd>Type mismatch
|
<dt>163<dd>Type mismatch
|
||||||
<dt>176<dd>String too long - <em>Not generated</em>
|
<dt>176<dd>String too long - <em>Not generated</em>
|
||||||
<dt>191<dd>Formula too complex - <em>Not generated by all browsers</em>
|
<dt>191<dd>Formula too complex - <em>Not generated by all browsers</em>
|
||||||
<dt>224<dd>Undefined function
|
<dt>224<dd>Undefined function
|
||||||
<dt>254<dd>Re-enter
|
<dt>254<dd>Re-enter
|
||||||
<dt>255<dd>Break
|
<dt>255<dd>Break
|
||||||
</dl>
|
</dl>
|
||||||
</section>
|
</section>
|
||||||
|
|
||||||
<section id="DOSQuickReference">
|
<section id="dos">
|
||||||
<!-- ================================================== -->
|
<!-- ================================================== -->
|
||||||
<h2>DOS 3.3 / ProDOS Quick Reference</h2>
|
<h2>DOS 3.3 / ProDOS Quick Reference</h2>
|
||||||
<!-- ================================================== -->
|
<!-- ================================================== -->
|
||||||
|
|
||||||
<p>See also</p>
|
<p>See also</p>
|
||||||
<ul>
|
<ul>
|
||||||
<li><a href="http://www.xs4all.nl/~fjkraan/comp/apple2faq/app2doscmdfaq.html">Apple II DOS & Commands FAQ</a>
|
<li><a href="http://www.xs4all.nl/~fjkraan/comp/apple2faq/app2doscmdfaq.html">Apple II DOS & Commands FAQ</a>
|
||||||
<li><a href="http://www.textfiles.com/apple/ANATOMY/">Apple II Textfiles: the DOS 3.3 Anatomy</a>
|
<li><a href="http://www.textfiles.com/apple/ANATOMY/">Apple II Textfiles: the DOS 3.3 Anatomy</a>
|
||||||
<li><a href="http://vectronicsappleworld.com/appleii/dos.html">Vectronic's Apple World DOS 3.3 and ProDOS Guide</a>
|
<li><a href="http://vectronicsappleworld.com/appleii/dos.html">Vectronic's Apple World DOS 3.3 and ProDOS Guide</a>
|
||||||
</ul>
|
</ul>
|
||||||
|
|
||||||
<h3>DOS Commands</h3>
|
<h3>DOS Commands</h3>
|
||||||
<dl>
|
<dl>
|
||||||
<dt>MON[,C][,I][,O]<dd>Traces DOS 3.3 commands ('Commands', 'Input' and 'Output')
|
<dt>MON[,C][,I][,O]<dd>Traces DOS 3.3 commands ('Commands', 'Input' and 'Output')
|
||||||
<dt>NOMON[,C][,I][,O] <dd>Cancels tracing of DOS 3.3 commands ('Commands', 'Input' and 'Output')
|
<dt>NOMON[,C][,I][,O] <dd>Cancels tracing of DOS 3.3 commands ('Commands', 'Input' and 'Output')
|
||||||
<dt>OPEN <var>filename</var>[,L<var>len</var>] <dd>Opens a text file.
|
<dt>OPEN <var>filename</var>[,L<var>len</var>] <dd>Opens a text file.
|
||||||
<dt>APPEND <var>filename</var> <dd>Appends to a text file.
|
<dt>APPEND <var>filename</var> <dd>Appends to a text file.
|
||||||
<dt>CLOSE [<var>filename</var>] <dd>Closes specified (or all) open text files.
|
<dt>CLOSE [<var>filename</var>] <dd>Closes specified (or all) open text files.
|
||||||
<dt>POSITION <var>filename</var>[,R<var>num</var>] <dd>Advances position in text file.
|
<dt>POSITION <var>filename</var>[,R<var>num</var>] <dd>Advances position in text file.
|
||||||
<dt>READ <var>filename</var>[,R<var>num</var>][,B<var>byte</var>] <dd>Reads from a text file.
|
<dt>READ <var>filename</var>[,R<var>num</var>][,B<var>byte</var>] <dd>Reads from a text file.
|
||||||
<dt>WRITE <var>filename</var>[,R<var>num</var>][,B<var>byte</var>]<dd>Writes to a text file
|
<dt>WRITE <var>filename</var>[,R<var>num</var>][,B<var>byte</var>]<dd>Writes to a text file
|
||||||
<dt>DELETE <var>filename</var> <dd>Delete a file
|
<dt>DELETE <var>filename</var> <dd>Delete a file
|
||||||
<dt>RENAME <var>oldname</var>,<var>newname</var> <dd>Rename a file
|
<dt>RENAME <var>oldname</var>,<var>newname</var> <dd>Rename a file
|
||||||
<dt>PR# <var>slot</var> <dd>Same as the BASIC command
|
<dt>PR# <var>slot</var> <dd>Same as the BASIC command
|
||||||
</dl>
|
</dl>
|
||||||
<p><var>Other DOS commands are NOT IMPLEMENTED.</var></p>
|
<p><var>Other DOS commands are NOT IMPLEMENTED.</var></p>
|
||||||
<p>Some sample files are present in a server-side store loaded on-demand into a client-side virtual file system (VFS). Creating or writing to a file will write to the VFS. Subsequent reads will read from the VFS. Files may be deleted from the VFS. These changes will not persist if the browser is refreshed or closed.</p>
|
<p>Some sample files are present in a server-side store loaded on-demand into a client-side virtual file system (VFS). Creating or writing to a file will write to the VFS. Subsequent reads will read from the VFS. Files may be deleted from the VFS. These changes will not persist if the browser is refreshed or closed.</p>
|
||||||
@ -388,20 +388,20 @@ This is intended as a quick reference for the <a href="index.htm">Applesoft BASI
|
|||||||
<code>PEEK(222)</code> in an ONERR handler.</p>
|
<code>PEEK(222)</code> in an ONERR handler.</p>
|
||||||
|
|
||||||
<dl>
|
<dl>
|
||||||
<dt>1<dd>Language not available - <em>Not generated</em>
|
<dt>1<dd>Language not available - <em>Not generated</em>
|
||||||
<dt>2<dd>Range error - <em>Not generated</em>
|
<dt>2<dd>Range error - <em>Not generated</em>
|
||||||
<dt>4<dd>Write protected - <em>Not generated</em>
|
<dt>4<dd>Write protected - <em>Not generated</em>
|
||||||
<dt>5<dd>End of data
|
<dt>5<dd>End of data
|
||||||
<dt>6<dd>File not found
|
<dt>6<dd>File not found
|
||||||
<dt>7<dd>Volume mismatch - <em>Not generated</em>
|
<dt>7<dd>Volume mismatch - <em>Not generated</em>
|
||||||
<dt>8<dd>I/O error - <em>Not generated</em>
|
<dt>8<dd>I/O error - <em>Not generated</em>
|
||||||
<dt>9<dd>Disk full - <em>Not generated</em>
|
<dt>9<dd>Disk full - <em>Not generated</em>
|
||||||
<dt>10<dd>File locked - <em>Not generated</em>
|
<dt>10<dd>File locked - <em>Not generated</em>
|
||||||
<dt>11<dd>Invalid option
|
<dt>11<dd>Invalid option
|
||||||
<dt>12<dd>No buffers available - <em>Not generated</em>
|
<dt>12<dd>No buffers available - <em>Not generated</em>
|
||||||
<dt>13<dd>File type mismatch - <em>Not generated</em>
|
<dt>13<dd>File type mismatch - <em>Not generated</em>
|
||||||
<dt>14<dd>Program too large - <em>Not generated</em>
|
<dt>14<dd>Program too large - <em>Not generated</em>
|
||||||
<dt>15<dd>Not direct command - <em>Not generated</em>
|
<dt>15<dd>Not direct command - <em>Not generated</em>
|
||||||
</dl>
|
</dl>
|
||||||
</section>
|
</section>
|
||||||
|
|
||||||
@ -421,8 +421,8 @@ a best-effort has been made testing on available systems and browsers.
|
|||||||
<p>
|
<p>
|
||||||
The <em>Open Apple</em> and <em>Closed Apple</em> keys on later Apple II models
|
The <em>Open Apple</em> and <em>Closed Apple</em> keys on later Apple II models
|
||||||
correspond to the Button #0 and Button #1 inputs and are emulated on modern keyboards
|
correspond to the Button #0 and Button #1 inputs and are emulated on modern keyboards
|
||||||
with the <em>Home</em> and <em>End</em> keys respectively. (Unfortunately, browsers
|
with the <em>Left Alt</em> and <em>Right Alt</em> keys respectively if possible,
|
||||||
are currently unable to distinguish the left and right <em>Alt</em> or <em>Command</em> keys.)
|
otherwise the <em>Home</em> and <em>End</em> keys respectively.
|
||||||
</p>
|
</p>
|
||||||
|
|
||||||
<p>
|
<p>
|
||||||
@ -432,14 +432,14 @@ using <code>GET</code> (blocking) or <code>PEEK(49152)</code> (non-blocking):
|
|||||||
</p>
|
</p>
|
||||||
|
|
||||||
<table style="margin-left: 3em;">
|
<table style="margin-left: 3em;">
|
||||||
<tr><td><code>CHR$(8)</code><td>Left arrow
|
<tr><td><code>CHR$(8)</code><td>Left arrow
|
||||||
<tr><td><code>CHR$(10)</code><td>Down arrow
|
<tr><td><code>CHR$(10)</code><td>Down arrow
|
||||||
<tr><td><code>CHR$(11)</code><td>Up arrow
|
<tr><td><code>CHR$(11)</code><td>Up arrow
|
||||||
<tr><td><code>CHR$(13)</code><td>Enter or Return
|
<tr><td><code>CHR$(13)</code><td>Enter or Return
|
||||||
<tr><td><code>CHR$(21)</code><td>Right arrow
|
<tr><td><code>CHR$(21)</code><td>Right arrow
|
||||||
<tr><td><code>CHR$(24)</code><td>Clear
|
<tr><td><code>CHR$(24)</code><td>Clear
|
||||||
<tr><td><code>CHR$(27)</code><td>Escape
|
<tr><td><code>CHR$(27)</code><td>Escape
|
||||||
<tr><td><code>CHR$(127)</code><td>Delete or Backspace
|
<tr><td><code>CHR$(127)</code><td>Delete or Backspace
|
||||||
</table>
|
</table>
|
||||||
|
|
||||||
|
|
||||||
@ -457,33 +457,33 @@ from 32-126 (printable ASCII). Control characters have the typical Apple II mean
|
|||||||
</p>
|
</p>
|
||||||
|
|
||||||
<table style="margin-left: 3em;">
|
<table style="margin-left: 3em;">
|
||||||
<tr><td><code>CHR$(4)</code><td>DOS command escape prefix
|
<tr><td><code>CHR$(4)</code><td>DOS command escape prefix
|
||||||
<tr><td><code>CHR$(7)</code><td>Make a "beep" (if your browser supports it)
|
<tr><td><code>CHR$(7)</code><td>Make a "beep" (if your browser supports it)
|
||||||
<tr><td><code>CHR$(8)</code><td>Backspace (move cursor left, wrap up)
|
<tr><td><code>CHR$(8)</code><td>Backspace (move cursor left, wrap up)
|
||||||
<tr><td><code>CHR$(10)</code><td>Line feed (move cursor down)
|
<tr><td><code>CHR$(10)</code><td>Line feed (move cursor down)
|
||||||
<tr><td><code>CHR$(13)</code><td>Carriage return (move cursor down and to left edge)
|
<tr><td><code>CHR$(13)</code><td>Carriage return (move cursor down and to left edge)
|
||||||
<tr><td><code>CHR$(127)</code><td>Displays a cursor glyph
|
<tr><td><code>CHR$(127)</code><td>Displays a cursor glyph
|
||||||
</table>
|
</table>
|
||||||
|
|
||||||
<p>
|
<p>
|
||||||
If 80-column firmware is active, the following additional codes are available:
|
If 80-column firmware is active, the following additional codes are available:
|
||||||
</p>
|
</p>
|
||||||
<table style="margin-left: 3em;">
|
<table style="margin-left: 3em;">
|
||||||
<tr><td><code>CHR$(11)</code><td>Clears from the cursor position to the end of the window
|
<tr><td><code>CHR$(11)</code><td>Clears from the cursor position to the end of the window
|
||||||
<tr><td><code>CHR$(12)</code><td>Move cursor to upper left and clear window
|
<tr><td><code>CHR$(12)</code><td>Move cursor to upper left and clear window
|
||||||
<tr><td><code>CHR$(14)</code><td>Set normal text output
|
<tr><td><code>CHR$(14)</code><td>Set normal text output
|
||||||
<tr><td><code>CHR$(15)</code><td>Set inverse text output
|
<tr><td><code>CHR$(15)</code><td>Set inverse text output
|
||||||
<tr><td><code>CHR$(17)</code><td>Set display to 40 columns
|
<tr><td><code>CHR$(17)</code><td>Set display to 40 columns
|
||||||
<tr><td><code>CHR$(18)</code><td>Set display to 80 columns
|
<tr><td><code>CHR$(18)</code><td>Set display to 80 columns
|
||||||
<tr><td><code>CHR$(21)</code><td>Deactivate the 80-column firmware
|
<tr><td><code>CHR$(21)</code><td>Deactivate the 80-column firmware
|
||||||
<tr><td><code>CHR$(22)</code><td>Scroll display down, preserving cursor position
|
<tr><td><code>CHR$(22)</code><td>Scroll display down, preserving cursor position
|
||||||
<tr><td><code>CHR$(23)</code><td>Scroll display up, preserving cursor position
|
<tr><td><code>CHR$(23)</code><td>Scroll display up, preserving cursor position
|
||||||
<tr><td><code>CHR$(24)</code><td>Disable mousetext
|
<tr><td><code>CHR$(24)</code><td>Disable mousetext
|
||||||
<tr><td><code>CHR$(25)</code><td>Move cursor to upper left (but don't clear window)
|
<tr><td><code>CHR$(25)</code><td>Move cursor to upper left (but do not clear window)
|
||||||
<tr><td><code>CHR$(26)</code><td>Clear the current line
|
<tr><td><code>CHR$(26)</code><td>Clear the current line
|
||||||
<tr><td><code>CHR$(27)</code><td>Enable mousetext
|
<tr><td><code>CHR$(27)</code><td>Enable mousetext
|
||||||
<tr><td><code>CHR$(28)</code><td>Forward space (move cursor right, wrap down)
|
<tr><td><code>CHR$(28)</code><td>Forward space (move cursor right, wrap down)
|
||||||
<tr><td><code>CHR$(29)</code><td>Clear from cursor position to end of line
|
<tr><td><code>CHR$(29)</code><td>Clear from cursor position to end of line
|
||||||
</table>
|
</table>
|
||||||
|
|
||||||
<p>
|
<p>
|
||||||
@ -503,15 +503,15 @@ consumed by a recursive descent parser which outputs a JavaScript
|
|||||||
object representing the program.</p>
|
object representing the program.</p>
|
||||||
|
|
||||||
<p>The token types (treated as terminals) are
|
<p>The token types (treated as terminals) are
|
||||||
<code>reserved</code>,
|
<code>reserved</code>,
|
||||||
<code>identifier</code>,
|
<code>identifier</code>,
|
||||||
<code>string-literal</code>,
|
<code>string-literal</code>,
|
||||||
<code>number-literal</code>,
|
<code>number-literal</code>,
|
||||||
<code>operator</code>,
|
<code>operator</code>,
|
||||||
<code>line-number</code>,
|
<code>line-number</code>,
|
||||||
<code>separator</code>,
|
<code>separator</code>,
|
||||||
<code>remark</code>,
|
<code>remark</code>,
|
||||||
<code>data-declaration</code>
|
<code>data-declaration</code>
|
||||||
- take a peek at the code if you want the gruesome details. Source lines may
|
- take a peek at the code if you want the gruesome details. Source lines may
|
||||||
only start with line numbers or (as an extension) separators. Special statement
|
only start with line numbers or (as an extension) separators. Special statement
|
||||||
parsing is done while lexing: <code>REM</code> consumes anything to the next
|
parsing is done while lexing: <code>REM</code> consumes anything to the next
|
||||||
@ -529,10 +529,10 @@ object representing the program.</p>
|
|||||||
<p>Overall program parsing is done with a recursive descent parser.</p>
|
<p>Overall program parsing is done with a recursive descent parser.</p>
|
||||||
|
|
||||||
<pre class="code">
|
<pre class="code">
|
||||||
Program = Line { Line }
|
Program = Line { Line }
|
||||||
Line = line-number Statement { separator Statement }
|
Line = line-number Statement { separator Statement }
|
||||||
Statement = data-declaration | remark | Command | EmptyStatement
|
Statement = data-declaration | remark | Command | EmptyStatement
|
||||||
Command = identifier /*...*/ | reserved /*...*/
|
Command = identifier /*...*/ | reserved /*...*/
|
||||||
</pre>
|
</pre>
|
||||||
|
|
||||||
<p>Statements ("commands" in the above grammar) are parsed with distinct cases for each statement type.
|
<p>Statements ("commands" in the above grammar) are parsed with distinct cases for each statement type.
|
||||||
@ -541,88 +541,77 @@ with a standard recursive descent parser. The parser generates JavaScript expres
|
|||||||
which are used as arguments for the library calls.</p>
|
which are used as arguments for the library calls.</p>
|
||||||
|
|
||||||
<pre class="code">
|
<pre class="code">
|
||||||
Expression = OrExpression
|
Expression = OrExpression
|
||||||
OrExpression = AndExpression { 'OR' AndExpression }
|
OrExpression = AndExpression { 'OR' AndExpression }
|
||||||
AndExpression = RelationalExpression { 'AND' RelationalExpression }
|
AndExpression = RelationalExpression { 'AND' RelationalExpression }
|
||||||
RelationalExpression = AdditiveExpression { RelOp AdditiveExpression }
|
RelationalExpression = AdditiveExpression { RelOp AdditiveExpression }
|
||||||
RelOp = '=' | '<' | '>' | '<=' | '=<' | '>=' | '=>' | '<>' | '><'
|
RelOp = '=' | '<' | '>' | '<=' | '=<' | '>=' | '=>' | '<>' | '><'
|
||||||
AdditiveExpression = MultiplicativeExpression { ( '+' | '-' ) MultiplicativeExpression }
|
AdditiveExpression = MultiplicativeExpression { ( '+' | '-' ) MultiplicativeExpression }
|
||||||
MultiplicativeExpression = PowerExpression { ( '*' | '/' ) PowerExpression }
|
MultiplicativeExpression = PowerExpression { ( '*' | '/' ) PowerExpression }
|
||||||
PowerExpression = UnaryExpression [ '^' UnaryExpression ]
|
PowerExpression = UnaryExpression [ '^' UnaryExpression ]
|
||||||
UnaryExpression = ( '+' | '-' | 'NOT' ) UnaryExpression
|
UnaryExpression = ( '+' | '-' | 'NOT' ) UnaryExpression
|
||||||
| FinalExpression
|
| FinalExpression
|
||||||
FinalExpression = number-literal
|
FinalExpression = number-literal
|
||||||
| string-literal
|
| string-literal
|
||||||
| 'FN' user_function_name '(' Expression ')'
|
| 'FN' user_function_name '(' Expression ')'
|
||||||
| reserved '(' Expression { ',' Expression } ')'
|
| reserved '(' Expression { ',' Expression } ')'
|
||||||
| identifier [ '(' Expression { ',' Expression } ')' ]
|
| identifier [ '(' Expression { ',' Expression } ')' ]
|
||||||
| '(' Expression ')'
|
| '(' Expression ')'
|
||||||
</pre>
|
</pre>
|
||||||
|
|
||||||
|
|
||||||
<p>Since Applesoft supports re-entrant error handling and synchronous input,
|
<p>Since Applesoft supports re-entrant error handling and synchronous input,
|
||||||
the output of the compiler is an array of statement-functions plus a driver
|
the output of the compiler is an array of statement-functions plus a driver
|
||||||
function which implements the logic for walking over the array.<p>
|
function which implements the logic for walking over the array.<p>
|
||||||
</section>
|
</section>
|
||||||
|
|
||||||
<section id="Extensions">
|
<section id="extensions">
|
||||||
<!-- ================================================== -->
|
<!-- ================================================== -->
|
||||||
<h2>Extensions beyond Standard Applesoft</h2>
|
<h2>Extensions beyond Standard Applesoft</h2>
|
||||||
<!-- ================================================== -->
|
<!-- ================================================== -->
|
||||||
<ul style="list-style: none;">
|
<ul style="list-style: none;">
|
||||||
<li id="Extension_StringFuncs">
|
<li id="def_fn_string">
|
||||||
[1] <code>DEF FN</code> supports string and integer functions
|
[1] <code>DEF FN</code> supports string and integer functions
|
||||||
e.g. <code>DEF FN IN$(X$) = " " + X$</code>
|
e.g. <code>DEF FN IN$(X$) = " " + X$</code>
|
||||||
(but return type must still match argument type)
|
(but return type must still match argument type)
|
||||||
<li id="Extension_DoubleEquals">
|
<li id="eqeq">
|
||||||
[2] <code>==</code> is supported for equality comparisons, in addition to <code>=</code>
|
[2] <code>==</code> is supported for equality comparisons, in addition to <code>=</code>
|
||||||
<li id="Extension_CHR">
|
<li id="chr_extras">
|
||||||
[3] When printing characters, <code>CHR$()</code> values greater than 255 generate glyphs that might be useful for certain maze games.
|
[3] When printing characters, <code>CHR$()</code> values greater than 255 generate glyphs that might be useful for certain maze games.
|
||||||
<li id="Extension_HSCRN">
|
<li id="hscrn">
|
||||||
[4] <code>HSCRN(<var>x</var>,<var>y</var>)</code> is added to allow reading the
|
[4] <code>HSCRN(<var>x</var>,<var>y</var>)</code> is added to allow reading the
|
||||||
hires screen. On a real Apple this required a machine-language routine (or a shape table and <code>XDRAW</code>).
|
hires screen. On a real Apple this required a machine-language routine (or a shape table and <code>XDRAW</code>).
|
||||||
|
|
||||||
</ul>
|
</ul>
|
||||||
</section>
|
</section>
|
||||||
|
|
||||||
|
<script type="text/javascript" src="../polyfill/polyfill.js"></script>
|
||||||
<script>
|
<script>
|
||||||
(function (el) {
|
(function buildTOC(el) {
|
||||||
var html = [];
|
var html = [];
|
||||||
el.innerHTML = "";
|
el.innerHTML = "";
|
||||||
|
|
||||||
var level = 1, newLevel, unique = 10000, key, c
|
var level = 1, unique = 10000;
|
||||||
for (c = document.body.firstChild; c; c = c.nextSibling) {
|
[].forEach.call(document.querySelectorAll('h2, h3'), function(c) {
|
||||||
if( c.nodeName === "H2" || c.nodeName === "H3" ) {
|
var newLevel = parseInt(c.nodeName.charAt(1), 10);
|
||||||
newLevel = parseInt(c.nodeName.charAt(1), 10);
|
if (newLevel > level) {
|
||||||
|
html.push('<ol>');
|
||||||
if (newLevel > level) {
|
} else if (level > newLevel) {
|
||||||
html.push( "<ol>" );
|
html.push('</ol>');
|
||||||
}
|
|
||||||
else if (level > newLevel) {
|
|
||||||
html.push( "<"+"/ol>" );
|
|
||||||
}
|
|
||||||
|
|
||||||
key = "key_" + unique++;
|
|
||||||
|
|
||||||
html.push( "<li>",
|
|
||||||
"<a href='#"+key+"'>",
|
|
||||||
c.textContent !== undefined ? c.textContent : c.innerText,
|
|
||||||
"<"+"/a>" ,
|
|
||||||
"<"+"/li>" );
|
|
||||||
|
|
||||||
c.setAttribute('id', key);
|
|
||||||
|
|
||||||
level = newLevel;
|
|
||||||
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
level = newLevel;
|
||||||
|
|
||||||
while( level > 1 ) {
|
var key = 'key_' + unique++;
|
||||||
html.push( "<"+"/ol>" );
|
|
||||||
--level;
|
html.push('<li><a href="#' + key + '">' + c.innerHTML + '</a>');
|
||||||
}
|
|
||||||
el.innerHTML = html.join("");
|
c.setAttribute('id', key);
|
||||||
}(document.getElementById("toc")));
|
|
||||||
|
});
|
||||||
|
|
||||||
|
while( level > 1 ) {
|
||||||
|
html.push( '</ol>' );
|
||||||
|
--level;
|
||||||
|
}
|
||||||
|
el.innerHTML = html.join('');
|
||||||
|
}(document.getElementById('toc')));
|
||||||
|
|
||||||
</script>
|
</script>
|
||||||
|
|||||||
4
tty.js
4
tty.js
@ -789,7 +789,9 @@ function TTY(screenElement, keyboardElement, bell) {
|
|||||||
break;
|
break;
|
||||||
|
|
||||||
// Used as paddle buttons (0=Open Apple, 1=Solid Apple)
|
// Used as paddle buttons (0=Open Apple, 1=Solid Apple)
|
||||||
|
case 'AltLeft':
|
||||||
case 'Home': buttonState[0] = 255; handled = true; break;
|
case 'Home': buttonState[0] = 255; handled = true; break;
|
||||||
|
case 'AltRight':
|
||||||
case 'End': buttonState[1] = 255; handled = true; break;
|
case 'End': buttonState[1] = 255; handled = true; break;
|
||||||
case 'PageUp': buttonState[2] = 255; handled = true; break;
|
case 'PageUp': buttonState[2] = 255; handled = true; break;
|
||||||
case 'Shift':
|
case 'Shift':
|
||||||
@ -835,7 +837,9 @@ function TTY(screenElement, keyboardElement, bell) {
|
|||||||
break;
|
break;
|
||||||
|
|
||||||
// Used as paddle buttons (0=Open Apple, 1=Solid Apple)
|
// Used as paddle buttons (0=Open Apple, 1=Solid Apple)
|
||||||
|
case 'AltLeft':
|
||||||
case 'Home': buttonState[0] = 0; handled = true; break;
|
case 'Home': buttonState[0] = 0; handled = true; break;
|
||||||
|
case 'AltRight':
|
||||||
case 'End': buttonState[1] = 0; handled = true; break;
|
case 'End': buttonState[1] = 0; handled = true; break;
|
||||||
case 'PageUp': buttonState[2] = 0; handled = true; break;
|
case 'PageUp': buttonState[2] = 0; handled = true; break;
|
||||||
case 'Shift': buttonState[2] = 0; handled = true; break;
|
case 'Shift': buttonState[2] = 0; handled = true; break;
|
||||||
|
|||||||
Reference in New Issue
Block a user