Apple-2-SW
/
jsbasic
mirror of https://github.com/inexorabletash/jsbasic.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Document PEEK/POKE shims using negative integers

This commit is contained in:
Joshua Bell 2021-05-29 12:08:29 -07:00
parent b0b2299cfb
commit 6fb8412aab
1 changed files with 24 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

48
reference.html
View File

@ -200,16 +200,16 @@ can be literals (unquoted strings), strings, or numbers
<li><code>POKE 37,<var>n</var></code> &mdash; Text cursor y <li><code>POKE 37,<var>n</var></code> &mdash; Text cursor y
<li><code>POKE 216,<var>n</var></code> &mdash; ONERR flag (<var>n</var> &lt; 128 disables ONERR handler) <li><code>POKE 216,<var>n</var></code> &mdash; ONERR flag (<var>n</var> &lt; 128 disables ONERR handler)
<li><code>POKE 230,<var>n</var></code> &mdash; Hi-Res plotting page (32 = page 1, 64 = page 2) <li><code>POKE 230,<var>n</var></code> &mdash; Hi-Res plotting page (32 = page 1, 64 = page 2)
<li><code>POKE 49168,0</code> &mdash; clear keyboard strobe <li><code>POKE 49168,0</code> or <code>POKE -16368,0</code> &mdash; clear keyboard strobe
<li><code>POKE 49200,0</code> &mdash; toggle speaker (no-op) <li><code>POKE 49200,0</code> or <code>POKE -16336,0</code> &mdash; toggle speaker (no-op)
<li><code>POKE 49232,0</code> &mdash; graphics mode <li><code>POKE 49232,0</code> or <code>POKE -16304,0</code> &mdash; graphics mode
<li><code>POKE 49233,0</code> &mdash; text mode <li><code>POKE 49233,0</code> or <code>POKE -16303,0</code> &mdash; text mode
<li><code>POKE 49234,0</code> &mdash; full graphics mode <li><code>POKE 49234,0</code> or <code>POKE -16302,0</code> &mdash; full graphics mode
<li><code>POKE 49235,0</code> &mdash; mixed text/graphics mode <li><code>POKE 49235,0</code> or <code>POKE -16301,0</code> &mdash; mixed text/graphics mode
<li><code>POKE 49236,0</code> &mdash; display page 1 <li><code>POKE 49236,0</code> or <code>POKE -16300,0</code> &mdash; display page 1
<li><code>POKE 49237,0</code> &mdash; display page 2 <li><code>POKE 49237,0</code> or <code>POKE -16299,0</code> &mdash; display page 2
<li><code>POKE 49238,0</code> &mdash; lores graphics mode <li><code>POKE 49238,0</code> or <code>POKE -16298,0</code> &mdash; lores graphics mode
<li><code>POKE 49239,0</code> &mdash; hires graphics mode <li><code>POKE 49239,0</code> or <code>POKE -16297,0</code> &mdash; hires graphics mode
</ul> </ul>
<dt>CALL <var>aexpr</var><dd>Call native routine <dt>CALL <var>aexpr</var><dd>Call native routine
@ -302,21 +302,21 @@ can be literals (unquoted strings), strings, or numbers
<li><code>PEEK(78)</code> &amp; <code>PEEK(79)</code> &mdash; Random-Number Field <li><code>PEEK(78)</code> &amp; <code>PEEK(79)</code> &mdash; Random-Number Field
<li><code>PEEK(222)</code> &mdash; Last error code <li><code>PEEK(222)</code> &mdash; Last error code
<li><code>PEEK(230)</code> &mdash; Hi-Res plotting page (32 = page 1, 64 = page 2) <li><code>PEEK(230)</code> &mdash; Hi-Res plotting page (32 = page 1, 64 = page 2)
<li><code>PEEK(49152)</code> &mdash; Read Keyboard <li><code>PEEK(49152)</code> or <code>PEEK(-16384)</code> &mdash; Read Keyboard
<li><code>PEEK(49168)</code> &mdash; Clear Keyboard strobe <li><code>PEEK(49168)</code> or <code>PEEK(-16368)</code> &mdash; Clear Keyboard strobe
<li><code>PEEK(49178)</code> &mdash; See if text mode (&gt; 127) or graphics mode (&lt; 128) <li><code>PEEK(49178)</code> or <code>PEEK(-16358)</code> &mdash; See if text mode (&gt; 127) or graphics mode (&lt; 128)
<li><code>PEEK(49179)</code> &mdash; See if mixed mode (&gt; 127) or full mode (&lt; 128) <li><code>PEEK(49179)</code> or <code>PEEK(-16357)</code> &mdash; See if mixed mode (&gt; 127) or full mode (&lt; 128)
<li><code>PEEK(49180)</code> &mdash; See if page2 (&gt; 127) or page1 (&lt; 128) <li><code>PEEK(49180)</code> or <code>PEEK(-16356)</code> &mdash; See if page2 (&gt; 127) or page1 (&lt; 128)
<li><code>PEEK(49181)</code> &mdash; See if hires mode (&gt; 127) or lores mode (&lt; 128) <li><code>PEEK(49181)</code> or <code>PEEK(-16355)</code> &mdash; See if hires mode (&gt; 127) or lores mode (&lt; 128)
<li><code>PEEK(49182)</code> &mdash; See if mousetext mode (&gt; 127) <li><code>PEEK(49182)</code> or <code>PEEK(-16354)</code> &mdash; See if mousetext mode (&gt; 127)
<li><code>PEEK(49183)</code> &mdash; See if 80-column mode (&gt; 127) <li><code>PEEK(49183)</code> or <code>PEEK(-16353)</code> &mdash; See if 80-column mode (&gt; 127)
<li><code>PEEK(49200)</code> &mdash; Click Speaker (no-op) <li><code>PEEK(49200)</code> or <code>PEEK(-16336)</code> &mdash; Click Speaker (no-op)
<li><code>PEEK(49248)</code> &mdash; Read Paddle Button #3 &mdash; <em>Use the PageDown key</em> <li><code>PEEK(49248)</code> or <code>PEEK(-16288)</code> &mdash; Read Paddle Button #3 &mdash; <em>Use the PageDown key</em>
<li><code>PEEK(49249)</code> &mdash; Read Paddle Button #0 &mdash; <em>Use the Home key</em> <li><code>PEEK(49249)</code> or <code>PEEK(-16287)</code> &mdash; Read Paddle Button #0 &mdash; <em>Use the Home key</em>
<li><code>PEEK(49250)</code> &mdash; Read Paddle Button #1 &mdash; <em>Use the End key</em> <li><code>PEEK(49250)</code> or <code>PEEK(-16286)</code> &mdash; Read Paddle Button #1 &mdash; <em>Use the End key</em>
<li><code>PEEK(49251)</code> &mdash; Read Paddle Button #2 &mdash; <em>Use the PageUp or Shift key</em> <li><code>PEEK(49251)</code> or <code>PEEK(-16285)</code> &mdash; Read Paddle Button #2 &mdash; <em>Use the PageUp or Shift key</em>
</ul> </ul>
</dl> </dl>
</section> </section>
@ -458,7 +458,7 @@ otherwise the <em>Home</em> and <em>End</em> keys respectively.
<p> <p>
Since the <em>Tab</em> key is necessary for keyboard access to browser functions and Since the <em>Tab</em> key is necessary for keyboard access to browser functions and
the rest of the web page, it is not available. Otherwise, special keys can be detected the rest of the web page, it is not available. Otherwise, special keys can be detected
using <code>GET</code> (blocking) or <code>PEEK(49152)</code> (non-blocking): using <code>GET</code> (blocking) or <code>PEEK(49152)</code> or <code>PEEK(-16384)</code> (non-blocking):
</p> </p>
<table style="margin-left: 3em;"> <table style="margin-left: 3em;">