Undefined values: Difference between revisions
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→{{header|6502 Assembly}}: Rephrased for clarity
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=={{header|6502 Assembly}}==
Every operation will return some 8-bit value, so there is no <code>null</code> in 6502 or anything like that. However, it is possible for certain actions to have '''undefined behavior''', for example, attempting to read from a write-only memory-mapped port might return any value from 0-255, depending on what was last on the data bus.
=={{header|ActionScript}}==
ActionScript has a special '''undefined''' value which applies to untyped variables and properties of dynamic classes which have not been initialized.
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