Motorola M68000 User Manual download pdf (Page 51)

Integer Instructions

4-10 M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL MOTOROLA

ADDI Add Immediate ADDI

(M68000 Family)

Instruction Fields:

Size ﬁeld—Speciﬁes the size of the operation.

00 — Byte operation

01 — Word operation

10 — Long operation

Effective Address ﬁeld—Speciﬁes the destination operand. Only data alterable

addressing modes can be used as listed in the following tables:

*Can be used with CPU32

Immediate ﬁeld—Data immediately following the instruction.

If size = 00, the data is the low-order byte of the immediate word.

If size = 01, the data is the entire immediate word.

If size = 10, the data is the next two immediate words.

Addressing Mode Mode Register Addressing Mode Mode Register

Dn 000 reg. number:Dn (xxx).W 111 000

An — — (xxx).L 111 001

(An) 010 reg. number:An #<data> — —

(An) + 011 reg. number:An

– (An) 100 reg. number:An

,An) 101 reg. number:An (d

,PC) — —

,An,Xn) 110 reg. number:An (d

,PC,Xn) — —

MC68020, MC68030, and MC68040 only

(bd,An,Xn)* 110 reg. number:An (bd,PC,Xn)* — —

([bd,An,Xn],od) 110 reg. number:An ([bd,PC,Xn],od) — —

([bd,An],Xn,od) 110 reg. number:An ([bd,PC],Xn,od) — —

1 2 ... 46 47 48 49 50 51 52 53 54 55 56 ... 91 92

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Motorola M68000 User Manual Page 51