## ALP Programming Guide and Reference

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### Operand Expression Type

An Operand-ExpressionType consists of those ExpressionType s that are valid for use as operands in processor instructions. The following ExpressionType s are not valid for use as an Operand-ExpressionType:

Compound-ExpressionType
Duplicated-ExpressionType

A String-ExpressionType is only valid as an Operand-ExpressionType if it is short enough to be converted to an Absolute-ExpressionType having an Operand Size less than or equal to the current Address Size setting.

Operand-ExpressionType:
Absolute-ExpressionType
Constant-ExpressionType
Immediate-ExpressionType
Direct-ExpressionType
Indirect-ExpressionType
Indexed-ExpressionType
Register-ExpressionType
String-ExpressionType
Floating-Point-ExpressionType
Type-ExpressionType