Intel 8XC196NP, 80C196NU, Microcontroller manual Notational Conventions and Terminology, Addresses

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1.2NOTATIONAL CONVENTIONS AND TERMINOLOGY

The following notations and terminology are used throughout this manual. The Glossary defines other terms with special meanings.

#	The pound symbol (#) has either of two meanings, depending on the
	context. When used with a signal name, the symbol means that the
	signal is active low. When used in an instruction, the symbol prefixes
	an immediate value in immediate addressing mode.
addresses	In this manual, both internal and external addresses use the number
	of hexadecimal digits that correspond with the number of available
	address lines. For example, the highest possible internal address is
	shown as FFFFFFH, while the highest possible external address is
	shown as FFFFFH. When writing code, use the appropriate address
	conventions for the software tool you are using. (In general,
	assemblers require a zero preceding an alphabetic hexadecimal
	character and an “H” following any hexadecimal value, so FFFFFFH
	must be written as 0FFFFFFH. ANSI ‘C’ compilers require a zero
	plus an “x” preceding a hexadecimal value, so FFFFFFH must be
	written as 0xFFFFFF.) Consult the manual for your assembler or
	compiler to determine its specific requirements.
assert and deassert	The terms assert and deassert refer to the act of making a signal
	active (enabled) and inactive (disabled), respectively. The active
	polarity (low or high) is defined by the signal name. Active-low
	signals are designated by a pound symbol (#) suffix; active-high
	signals have no suffix. To assert RD# is to drive it low; to assert ALE
	is to drive it high; to deassert RD# is to drive it high; to deassert ALE
	is to drive it low.
clear and set	The terms clear and set refer to the value of a bit or the act of giving
	it a value. If a bit is clear, its value is “0”; clearing a bit gives it a “0”
	value. If a bit is set, its value is “1”; setting a bit gives it a “1” value.
f	Lowercase “f” represents the internal operating frequency. See
	“Internal Timing” on page 2-7 for details.
instructions	Instruction mnemonics are shown in upper case to avoid confusion.
	In general, you may use either upper case or lower case when
	programming. Consult the manual for your assembler or compiler to
	determine its specific requirements.

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