NEC 78K/0 Series user manual - page 9

9
User's Manual U12326EJ4V0UM
CONTENTS
CHAPTER 1 MEMORY SPACE ...............................................................................................................12
1.1 Memory Spaces................................................................................................................12
1.2 Internal Program Memory (Internal ROM) Space ..........................................................12
1.3 Vector Table Area............................................................................................................. 12
1.4 CALLT Instruction Table Area.........................................................................................12
1.5 CALLF Instruction Entry Area......................................................................................... 12
1.6 Internal Data Memory (Internal RAM) Space..................................................................12
1.7 Special Function Register (SFR) Area............................................................................13
1.8 External Memory Space................................................................................................... 13
1.9 IEBusTM Register Area...................................................................................................... 13
CHAPTER 2 REGISTERS ........................................................................................................................14
2.1 Control Registers .............................................................................................................14
2.1.1 Program counter (PC) ......................................................................................................... 14
2.1.2 Program status word (PSW) ............................................................................................... 14
2.1.3 Stack pointer (SP)................................................................................................................ 16
2.2 General-Purpose Registers............................................................................................. 17
2.3 Special Function Registers (SFRs).................................................................................19
CHAPTER 3 ADDRESSING..................................................................................................................... 20
3.1 Instruction Address Addressing.....................................................................................20
3.1.1 Relative addressing............................................................................................................. 20
3.1.2 Immediate addressing......................................................................................................... 21
3.1.3 Table indirect addressing ................................................................................................... 22
3.1.4 Register addressing............................................................................................................ 23
3.2 Operand Address Addressing ........................................................................................24
3.2.1 Implied addressing.............................................................................................................. 24
3.2.2 Register addressing............................................................................................................ 25
3.2.3 Direct addressing ................................................................................................................ 26
3.2.4 Short direct addressing ...................................................................................................... 27
3.2.5 Special-function register (SFR) addressing...................................................................... 28
3.2.6 Register indirect addressing .............................................................................................. 29
3.2.7 Based addressing................................................................................................................ 30
3.2.8 Based indexed addressing................................................................................................. 30
3.2.9 Stack addressing................................................................................................................. 31
CHAPTER 4 INSTRUCTION SET ............................................................................................................32
4.1 Operation ..........................................................................................................................32
4.1.1 Operand identifiers and description methods.................................................................. 32
4.1.2 Description of “operation” column.................................................................................... 33
4.1.3 Description of “flag operation” column ............................................................................ 33
4.1.4 Description of number of clocks........................................................................................ 34
4.1.5 Instructions listed by addressing type.............................................................................. 34
4.2 Instruction Codes............................................................................................................. 38
4.2.1 Description of instruction code table................................................................................ 38
4.2.2 Instruction code list............................................................................................................. 39