2 immediate addressing – NEC PD78058FY(A) User Manual

Page 113

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113

CHAPTER 5 CPU ARCHITECTURE

5.3.2 Immediate addressing

[Function]

Immediate data in the instruction word is transferred to the program counter (PC) and branched.

This function is carried out when the CALL !addr16 or BR !addr16 or CALLF !addr11 instruction is executed.

The CALL !addr16 and BR !addr16 instruction can branch in the entire memory space. The CALLF !addr11

instruction branches to an area of addresses 0800H through 0FFFH.

[Illustration]

In the case of CALL !addr16 and BR !addr16 instructions

15

0

PC

8 7

7

0

fa

10–8

11 10

0

0

0

0

1

6

4

3

CALLF

fa

7–0

15

0

PC

8 7

7

0

CALL or BR

Low Addr.

High Addr.

In the case of CALLF !addr11 instruction

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