Chapter 4 Instruction Set; Operation; Operand Identifiers And Description Methods - NEC 78K/0 Series User Manual

This chapter lists the instructions in the 78K/0 Series instruction set. The instructions are common to all
78K/0 Series products.

4.1 Operation

For the operation list for each product, refer to the user's manual of each product.

4.1.1 Operand identifiers and description methods

Operands are described in the "Operand" column of each instruction in accordance with the description method
of the instruction operand identifier (refer to the assembler specifications for details). When there are two or more
description methods, select one of them. Alphabetic letters in capitals and the symbols, #, !, $ and [ ] are key
words and are described as they are. Each symbol has the following meaning.
• #: Immediate data specification
• !: Absolute address specification
• $: Relative address specification
• [ ]: Indirect address specification
In the case of immediate data, describe an appropriate numeric value or a label. When using a label, be sure
to describe the #, !, $ and [ ] symbols.
For operand register identifiers, r and rp, either function names (X, A, C, etc.) or absolute names (names in
parentheses in the table below, R0, R1, R2, etc.) can be used for description.
Table 4-1. Operand Identifiers and Description Methods
Identifier
r X (R0), A (R1), C (R2), B (R3), E (R4), D (R5), L (R6), H (R7)
rp AX (RP0), BC (RP1), DE (RP2), HL (RP3)
sfr Special-function register symbol
sfrp Special-function register symbols (16-bit manipulatable register even addresses only)
saddr FE20H to FF1FH Immediate data or labels
saddrp FE20H to FF1FH Immediate data or labels (even addresses only)
addr16 0000H to FFFFH Immediate data or labels (Only even addresses for 16-bit data transfer instructions)
addr11 0800H to 0FFFH Immediate data or labels
addr5 0040H to 007FH Immediate data or labels (even addresses only)
word 16-bit immediate data or label
byte 8-bit immediate data or label
bit 3-bit immediate data or label
RBn RB0 to RB3
Note FFD0H to FFDFH are not addressable.
Remark Refer to the user's manual of each product for the symbols of special function registers.
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CHAPTER 4 INSTRUCTION SET
Description Method
Note
User's Manual U12326EJ4V0UM
Note