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Document predefined constants

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3214 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz 2004-10-06 21:12:28 +00:00
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@ -378,7 +378,7 @@ for the Apple ][ machines. It is available in the Apple ][ ROM. ca65 can
generate code for this pseudo CPU when switched into sweet16 mode. The generate code for this pseudo CPU when switched into sweet16 mode. The
following is special in sweet16 mode: following is special in sweet16 mode:
<itemize> <itemize>
<item>The '@' character denotes indirect addressing and is no longer available <item>The '@' character denotes indirect addressing and is no longer available
for cheap local labels. If you need cheap local labels, you will have to for cheap local labels. If you need cheap local labels, you will have to
@ -395,7 +395,7 @@ SWEET 16 code, nor the zero page locations needed for the SWEET 16 registers,
nor does it call the interpreter. All this must be done by your program. Apple nor does it call the interpreter. All this must be done by your program. Apple
][ programmers do probably know how to use sweet16 mode. ][ programmers do probably know how to use sweet16 mode.
For more information about SWEET 16, see For more information about SWEET 16, see
<htmlurl url="http://www.6502.org/source/interpreters/sweet16.htm" <htmlurl url="http://www.6502.org/source/interpreters/sweet16.htm"
name="http://www.6502.org/source/interpreters/sweet16.htm">. name="http://www.6502.org/source/interpreters/sweet16.htm">.
@ -3657,6 +3657,7 @@ each supported CPU a constant similar to
CPU_65C02 CPU_65C02
CPU_65816 CPU_65816
CPU_SUNPLUS CPU_SUNPLUS
CPU_SWEET16
</verb></tscreen> </verb></tscreen>
is defined. These constants may be used to determine the exact type of the is defined. These constants may be used to determine the exact type of the
@ -3669,6 +3670,7 @@ another constant is defined:
CPU_ISET_65C02 CPU_ISET_65C02
CPU_ISET_65816 CPU_ISET_65816
CPU_ISET_SUNPLUS CPU_ISET_SUNPLUS
CPU_ISET_SWEET16
</verb></tscreen> </verb></tscreen>
The value read from the <tt/<ref id=".CPU" name=".CPU">/ pseudo variable may The value read from the <tt/<ref id=".CPU" name=".CPU">/ pseudo variable may
@ -3698,6 +3700,34 @@ CPUs (the latter two are upwards compatible to the 65SC02).
<sect>Predefined constants<label id="predefined-constants"><p>
For better orthogonality, the assembler defines similar symbols as the
compiler, depending on the target system selected:
<itemize>
<item><tt/__ACE__/ - Target system is <tt/ace/
<item><tt/__APPLE2__",/ - Target system is <tt/apple2/
<item><tt/__APPLE2ENH__",/ - Target system is <tt/apple2enh/
<item><tt/__ATARI__/ - Target system is <tt/atari/
<item><tt/__ATMOS__",/ - Target system is <tt/atmos/
<item><tt/__BBC__",/ - Target system is <tt/bbc/
<item><tt/__C128__/ - Target system is <tt/c128/
<item><tt/__C16__/ - Target system is <tt/c16/
<item><tt/__C64__/ - Target system is <tt/c64/
<item><tt/__CBM__/ - Target is a Commodore system
<item><tt/__CBM510__/ - Target system is <tt/cbm510/
<item><tt/__CBM610__/ - Target system is <tt/cbm610/
<item><tt/__GEOS__",/ - Target system is <tt/geos/
<item><tt/__LUNIX__",/ - Target system is <tt/lunix/
<item><tt/__NES__",/ - Target system is <tt/nes/
<item><tt/__PET__/ - Target system is <tt/pet/
<item><tt/__PLUS4__/ - Target system is <tt/plus4/
<item><tt/__SUPERVISION__",/ - Target system is <tt/supervision/
<item><tt/__VIC20__/ - Target system is <tt/vic20/
</itemize>
<sect>Structs and unions<label id="structs"><p> <sect>Structs and unions<label id="structs"><p>
Structs and unions are special forms of <ref id="scopes" name="scopes">. They Structs and unions are special forms of <ref id="scopes" name="scopes">. They