KS57C2308/P2308/C2316/P2316SAM47 INSTRUCTION SET

BAND — Bit Logical And

BAND

C,src.b

 

 

 

 

 

 

 

 

Operation:

Operand

Operation Summary

Bytes

Cycles

 

 

 

 

 

 

C,mema.b

Logical-AND carry flag with memory bit

2

2

 

 

 

 

 

 

C,memb.@L

 

2

2

 

 

 

 

 

 

C,@H+DA.b

 

2

2

 

 

 

 

 

Description: The specified bit of the source is logically ANDed with the carry flag bit value. If the Boolean value of the source bit is a logic zero, the carry flag is cleared to "0"; otherwise, the current carry flag setting is left unaltered. The bit value of the source operand is not affected.

Operand

 

 

 

Binary Code

 

 

 

Operation Notation

 

 

 

 

 

 

 

 

 

 

 

 

C,mema.b *

1

1

1

 

1

0

 

1

0

1

C C AND mema.b

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C,memb.@L

1

1

1

 

1

0

 

1

0

1

C C AND [memb.7–2 + L.3–2].

 

 

 

 

 

 

 

 

 

 

 

[L.1–0]

 

 

 

 

 

 

 

 

 

 

 

 

 

0

1

0

 

0

a5

 

a4

a3

a2

 

 

 

 

 

 

 

 

 

 

 

 

 

C,@H+DA.b

1

1

1

 

1

0

 

1

0

1

C C AND [H + DA.3–0].b

 

 

 

 

 

 

 

 

 

 

 

 

 

0

0

b1

 

b0

a3

 

a2

a1

a0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Second Byte

 

 

 

Bit Addresses

* mema.b

 

 

 

 

 

 

 

 

 

 

 

1

0

b1

 

b0

a3

 

a2

a1

a0

FB0H–FBFH

 

 

 

 

 

 

 

 

 

 

 

 

 

1

1

b1

 

b0

a3

 

a2

a1

a0

FF0H–FFFH

 

 

 

 

 

 

 

 

 

 

 

 

Examples: 1. The following instructions set the carry flag if P1.0 (port 1.0) is equal to "1" (and assuming the carry flag is already set to "1"):

SMB

15

;

C "1"

BAND

C,P1.0

;

If P1.0 = "1", C "1"

;If P1.0 = "0", C "0"

2.Assume the P1 address is FF1H and the value for register L is 9H (1001B). The address (memb.7–2) is 111100B; (L.3–2) is 10B. The resulting address is 11110010B or FF2H, specifying P2. The bit value for the BAND instruction, (L.1–0) is 01B which specifies bit 1. Therefore, P1.@L = P2.1:

LD L,#9H

BAND C,P1.@L

;

P1.@L is specified as P2.1

 

;

C AND P2.1

5-29

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Image 103
Samsung KS57C2308 manual Band Bit Logical, SMB Band, Band C,P1.@L