AT75C datasheet(40/171 Pages) ATMEL

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AT75C DSP Subsystem

1368C–INTAP–08/02

AND – And

Syntax:

and operand, aX

Operation:

If operand is aX or P:

aX[35:0] AND operand

−> aX[35:0]

If operand is unsigned short immediate:

aX[7:0] AND operand

−> aX[7:0]

aX[15:8]

−> aX[15:8]

−> aX[35:16]

if operand is REG, (rN), long immediate:

aX[15:0] AND operand

−> aX[15:0]

−> aX[35:16]

Note: If the operand is one of the a accumulators or the P register, it is

ANDed with the destination accumulator.

If the operand is short immediate, the operand is zero-extended to form

a 36-bit operand, then ANDed with the destination accumulator. Bits 15

to 8 are unaffected; other bits of the accumulator are cleared.

If the operand is a 16-bit register or a long immediate value, the oper-

and is zero-extended to form a 36-bit operand, then ANDed with the

accumulator. Therefore, the upper bits of the accumulator are cleared

by this instruction.

Operand:

REG

(rN)

direct address

[##direct address]

#unsigned short immediate

##long immediate

(rb + offset7)

(rb + ##offset)

Affected Flags:

Z flag is set if all the bits at the ALU output are zeroed, cleared other-

wise. Note that when the operand is unsigned short immediate, ALU

output bits 35 to 8 are 0.

Cycles:

2 when the instruction is two words long

Words:

2 when the operand is

##long immediate or (rb+offset) or [##direct

NVCE

–––

–

AT75C Datasheet(PDF) 40 Page - ATMEL Corporation

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