NEC PD750008 User Manual

Page 279

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259

CHAPTER 11 INSTRUCTION SET

(2) Bit manipulation addressing instruction codes

*

1

in the operand field indicates that there are three types of bit manipulation addressing, fmem.bit,

pmem.@L, and @H+mem.bit.

The table below lists the second byte

*

2

of an instruction code corresponding to the above addressing.

*

1

Second byte of instruction code

Accessible bits

fmem.bit

1

0

B

1

B

0

F

3

F

2

F

1

F

0

FB0H-FBFH manipulatable bits

1

1

B

1

B

0

F

3

F

2

F

1

F

0

FF0H-FFFH manipulatable bits

pmem.@L

0

1

0

0

G

3

G

2

G

1

G

0

FC0H-FFFH manipulatable bits

@H+mem.bit

0

0

B

1

B

0

D

3

D

2

D

1

D

0

Manipulatable bits of accessible memory bank

B

n

: Immediate data for bit

F

n

: Immediate data for fmem (Low-order four bits of address)

G

n

: Immediate data for pmem (Bits 2 to 5 of address)

D

n

: Immediate data for mem (Low-order four bits of address)

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