NEC PD78058FY(A) User Manual

Page 120

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120

CHAPTER 5 CPU ARCHITECTURE

15

0

Short Direct Memory

Effective Address

1

1

1

1

1

1

1

8 7

0

7

OP code

saddr-offset

α

[Description example]

MOV 0FE30H, #50H; when setting saddr to FE30H and immediate data to 50H

Operation code

0 0 0 1 0 0 0 1

OP code

0 0 1 1 0 0 0 0

30H (saddr-offset)

0 1 0 1 0 0 0 0

50H (immediate data)

[Illustration]

When 8-bit immediate data is 20H to FFH,

α

= 0

When 8-bit immediate data is 00H to 1FH,

α

= 1

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