Zilog Z16F2810 - Manual (Page 81)

UM018809-0611 Instruction Set Reference
ZNEO
®
CPU Core
User Manual
65
Instruction Set Reference
This chapter provides detailed description of the assembly language instructions available
with the ZNEO CPU.
Instruction Notation
Tables 19 and 20 list the symbolic notation for expressions and other miscellaneous sym-
bols used to describe the operation of ZNEO CPU instructions. For general notation
details, see
Manual Conventions on page xiv . For operand notation details, see the Oper-
and Addressing section on page 27. The operand abbreviations are explained in Table 17
on page 56.
Numerical and Expression Notation
Table 19 lists symbols and operators used in expressions in this document. This is a subset
of operators recognized by the assembler. For more details, refer to the assembler docu-
mentation.
Table 19. Symbols Used in Expressions
Symbol Definition
$ During assembly, returns the current address.
H Hexadecimal number suffix.
B Binary number suffix.
xB, xH Binary or hexadecimal “don’t care” digit (ignored by CPU).
% Alternate hexadecimal number prefix.
Modulus operator (remainder of division) when preceded and followed by spaces.
* Multiplication operator (in assembly source).
/ Division operator.
+ Addition operator.
– Subtraction operator. Minus sign or negation when used as unary prefix.
~ One’s complement unary operator.
!= Not equal relational operator. True if terms are not equal.