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Add softswitch reads for display modes

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Fixes #32

The RdAltChar (mousetext) is not accurate. Under Virtual II it seems
to always return true if the 80 column firmware is active, regardless
of which character set is active.
This commit is contained in:
Joshua Bell
2020-05-29 21:55:32 -07:00
parent 44e308f030
commit 17b0baf7e5
6 changed files with 56 additions and 5 deletions
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reference.html
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@ -304,6 +304,14 @@ can be literals (unquoted strings), strings, or numbers
<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(49168)</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(49179)</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(49181)</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(49188)</code> &mdash; See if 80-column mode (&gt; 127)
<li><code>PEEK(49200)</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(49249)</code> &mdash; Read Paddle Button #0 &mdash; <em>Use the Home key</em>