D17133CS datasheet(8/289 Pages) NEC

8 / 289 page

– iii –

CHAPTER 8 GENERAL REGISTER (GR) ........................................................................................

8.1

GENERAL REGISTER CONFIGURATION ........................................................................

8.2

FUNCTIONS OF THE GENERAL REGISTER ..................................................................

CHAPTER 9 REGISTER FILE (RF) ...................................................................................................

9.1

9.1.1

Configuration of the Register File ......................................................................................

9.1.2

Relationship between the Register File and Data Memory ..............................................

9.2

FUNCTIONS OF THE REGISTER FILE ............................................................................

9.2.1

Functions of the Register File ............................................................................................

9.2.2

Control Register Functions .................................................................................................

9.2.3

9.3

CONTROL REGISTER .......................................................................................................

9.4

CAUTIONS ON USING THE REGISTER FILE .................................................................

9.4.1

Concerning Operation of the Control Register (Read-Only and Unused Registers) ........

9.4.2

CHAPTER 10 DATA BUFFER (DBF)................................................................................................

10.1 DATA BUFFER CONFIGURATION ...................................................................................

10.2 FUNCTIONS OF THE DATA BUFFER..............................................................................

10.2.1

Data Buffer and Peripheral Hardware ................................................................................

10.2.2

Data Transfer with Peripheral Hardware ............................................................................

10.2.3

Table Reference ..................................................................................................................

CHAPTER 11 ARITHMETIC AND LOGIC UNIT .............................................................................

11.1 ALU BLOCK CONFIGURATION .......................................................................................

11.2 FUNCTIONS OF THE ALU BLOCK ..................................................................................

11.2.1

Functions of the ALU ..........................................................................................................

11.2.2

Functions of Temporary Registers A and B .......................................................................

11.2.3

Functions of the Status Flip-flop .........................................................................................

11.2.4

Performing Operations in 4-Bit Binary ................................................................................

11.2.5

Performing Operations in BCD ...........................................................................................

11.2.6

Performing Operations in the ALU Block ...........................................................................

11.3 ARITHMETIC OPERATIONS (ADDITION AND SUBTRACTION IN 4-BIT

BINARY AND BCD) ...........................................................................................................

11.3.1 Addition and Subtraction When CMP=0 and BCD=0 .........................................................

11.3.2 Addition and Subtraction When CMP=1 and BCD=0 .........................................................

11.3.3 Addition and Subtraction When CMP=0 and BCD=1 .........................................................

11.3.4 Addition and Subtraction When CMP=1 and BCD=1 .........................................................

11.3.5 Cautions on Use of Arithmetic Operations ..........................................................................

11.4 LOGICAL OPERATIONS ...................................................................................................

11.5 BIT JUDGEMENT ..............................................................................................................

11.5.1

TRUE (1) Bit Judgement .....................................................................................................

11.5.2

FALSE (0) Bit Judgement ....................................................................................................

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