UPD784938 Datasheet, PDF (680/733 Pages) NEC – 16-Bit Single-Chip Microcontrollers

CHAPTER 29 INSTRUCTION OPERATIONS
(5) Number of bytes of instruction that includes mem in operands
mem Mode
Number of bytes
Register Indirect Addressing
1
2^Note
Based
Addressing
3
Indexed
Addressing
5
Based Indexed
Addressing
2
Note One-byte instruction only when [TDE], [WHL], [TDE+], [TDE–], [WHL+], or [WHL–] is written as mem in an MOV
instruction.
(6) Number of bytes of instruction that includes saddr, saddrp, r, or rp in operands
For some instructions that include saddr, saddrp, r, or rp in their operands, two “Bytes” entries are given, separated
by a slash (“/”). The entry that applies is shown in the table below.
Identifier
saddr
saddrp
r
rp
Left-Hand “Bytes” Figure
saddr2
saddrp2
r1
rp1
Right-Hand “Bytes” Figure
saddr1
saddrp1
r2
rp2
(7) Description of instructions that include mem in operands and string instructions
Operands TDE, WHL, VVP, and UUP (24-bit registers) can also be written as DE, HL, VP, and UP respectively.
However, they are still treated as TDE, WHL, VVP, and UUP (24-bit registers) when written as DE, HL, VP, and UP.
680
Preliminary User’s Manual U13987EJ1V0UM00