Motorola M68000 User Manual download pdf (Page 52)

Integer Instructions

MOTOROLA M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL 4-11

ADDQ Add Quick ADDQ

(M68000 Family)

Operation: Immediate Data + Destination → Destination

Assembler

Syntax: ADDQ # < data > , < ea >

Attributes: Size = (Byte, Word, Long)

Description: Adds an immediate value of one to eight to the operand at the destination

location. The size of the operation may be speciﬁed as byte, word, or long. Word and

long operations are also allowed on the address registers. When adding to address

registers, the condition codes are not altered, and the entire destination address

Condition Codes:

X — Set the same as the carry bit.

N — Set if the result is negative; cleared otherwise.

Z — Set if the result is zero; cleared otherwise.

V — Set if an overﬂow occurs; cleared otherwise.

C — Set if a carry occurs; cleared otherwise.

The condition codes are not affected when the destination is an address register.

Instruction Format:

XNZVC

*****

1514131211109876543210

0101 DATA 0 SIZE

EFFECTIVE ADDRESS

MODE REGISTER

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 91 92

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Motorola M68000 User Manual Page 52