NEC PD754244 Manuel D’Utilisation

User’s Manual  U10676EJ3V0UM

Function:  A 

←

 n4  n4 = I

3-0

: 0-FH

Transfers 4-bit immediate data n4 to the A register (4-bit accumulator).  This instruction has a string effect (group

A), and if MOV A, #n4 or MOV XA, #n8 follows this instruction, the string-effect instruction following the instruction

executed is processed as NOP.

(1) To set 0BH to the accumulator

MOV A, #0BH

(2) To select data output to port 3 from 0 to 2

A0: MOV A, #0

A1: MOV A, #1

A2: MOV A, #2

OUT PORT3, A

Function:  reg1 

←

 n4  n4 = I

3-0

  0 to FH

Transfers 4-bit immediate data n4 to A register reg1 (X, H, L, D, E, B, or C).

Function:  XA 

←

 n8  n8 = I

7-0

: 00H to FFH

Transfers 8-bit immediate data n8 to register pair XA.  This instruction has a string effect, and if the same instruction

or an MOV A, #n4 instruction follows this instruction, the string-effect instruction following the instruction executed

is processed as NOP.

Function:  HL 

←

 n8  n8 = I

7-0

: 00H-FFH

Transfers 8-bit immediate data n8 to register pair HL.  This instruction has a string effect, and if the same

instruction follows this instruction, the string-effect instructions following the instruction executed is processed as

NOP.

Function:  rp2 

←

 n8  n8 = I

7-0

: 00H to FFH

Transfers 8-bit immediate data n8 to register pair rp2 (BC, DE).