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52 lines
1.6 KiB
Plaintext
52 lines
1.6 KiB
Plaintext
C02 for C programmers
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TYPES
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C02 only supports one data type: unsigned char.
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POINTERS
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C02 does not support pointer type variables or parameters. However, the
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address-of operator may be used in function calls and the inline
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statement.
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DIRECTIVES
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C02 does not use a preprocessor. All directives are directly processed
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by the compiler.
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CONSTANTS
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Constant definitions use the same syntax as C, but when a constant is
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subsequently referenced in code, it must be prefixed with a # symbol.
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ENUMERATION
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Instead of the enum keyword, C02 uses the #enum directive. Values may
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not be specified when defining enumerated constants.
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DECLARATIONS
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Variable and function names may be no more than six characters in length.
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Multiple variable declarations separated by commas are allowed.
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A variable in a declaration may be initialized by following it with an
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equal sign and a constant, however this declaration is done at compile
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time, so no re-initialization will occur during code execution.
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Array declarations using bracket syntax specify the upper bound, rather
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than the array size. Therefore, the array will be allocated with one more
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element than the specified number.
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EXPRESSIONS
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C02 supports the addition, subtraction, bitwise-and, bitwise-or, and
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exclusive-or operators. The multiplication, division, and binary shift
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operators are not supported. These can be implemented through functions.
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STATEMENTS
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Instead of the switch statement, C02 uses the select statement. The
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select statement works almost identically to the switch statement except
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that case blocks do not fall through.
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