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Added documentation about the slightly different behavior of cpeekcolor() on the cx16 platform.

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This commit is contained in:
Greg King
2021-03-25 08:28:15 -04:00
parent d3cd668585
commit 0f1386ff4c
2 changed files with 40 additions and 31 deletions
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69
doc/cx16.sgml
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@@ -142,13 +142,20 @@ The functions listed below are special for the CX16. See the <url
url="funcref.html" name="function reference"> for declarations and usage.
<itemize>
<item>get_ostype
<item>set_tv
<item>videomode
<item>vpeek
<item>vpoke
<item>get_ostype()
<item>set_tv()
<item>videomode()
<item>vpeek()
<item>vpoke()
</itemize>
<tt/cpeekcolor()/ works differently on the Commander X16 than it does on other
platforms. Each character has two colors: background and text (foreground).
<tt/cpeekcolor()/ returns both colors. The high nybble describes the
background color, the low nybble describes the text color. For example, if the
function is used on the default screen, then it returns &dollar;61, which means
white-on-blue.
<sect1>CBM-specific functions<p>
@@ -157,32 +164,32 @@ machines. See the <url url="funcref.html" name="function reference"> for
declarations and usage.
<itemize>
<item>cbm_close
<item>cbm_closedir
<item>cbm_k_basin
<item>cbm_k_bsout
<item>cbm_k_chkin
<item>cbm_k_ckout
<item>cbm_k_close
<item>cbm_k_clrch
<item>cbm_k_getin
<item>cbm_k_load
<item>cbm_k_open
<item>cbm_k_readst
<item>cbm_k_save
<item>cbm_k_second
<item>cbm_k_setlfs
<item>cbm_k_setnam
<item>cbm_k_tksa
<item>cbm_load
<item>cbm_open
<item>cbm_opendir
<item>cbm_read
<item>cbm_readdir
<item>cbm_save
<item>cbm_write
<item>get_tv
<item>waitvsync
<item>cbm_close()
<item>cbm_closedir()
<item>cbm_k_basin()
<item>cbm_k_bsout()
<item>cbm_k_chkin()
<item>cbm_k_ckout()
<item>cbm_k_close()
<item>cbm_k_clrch()
<item>cbm_k_getin()
<item>cbm_k_load()
<item>cbm_k_open()
<item>cbm_k_readst()
<item>cbm_k_save()
<item>cbm_k_second()
<item>cbm_k_setlfs()
<item>cbm_k_setnam()
<item>cbm_k_tksa()
<item>cbm_load()
<item>cbm_open()
<item>cbm_opendir()
<item>cbm_read()
<item>cbm_readdir()
<item>cbm_save()
<item>cbm_write()
<item>get_tv()
<item>waitvsync()
</itemize>