Motorola CPU32 User Manual Page 213

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Integer Instructions
MOTOROLA M68000 FAMILY PROGRAMMER’S REFERENCE MANUAL 4-109
JSR Jump to Subroutine JSR
(M68000 Family)
Operation: SP – 4 Sp; PC (SP); Destination Address PC
Assembler
Syntax: JSR < ea >
Attributes: Unsized
Description: Pushes the long-word address of the instruction immediately following the
JSR instruction onto the system stack. Program execution then continues at the
address specified in the instruction.
Condition Codes:
Not affected.
Instruction Format:
Instruction Field:
Effective Address field—Specifies the address of the next instruction. Only control
addressing modes can be used as listed in the following tables:
*Can be used with CPU32.
1514131211109876543210
0100111010
EFFECTIVE ADDRESS
MODE REGISTER
Addressing Mode Mode Register Addressing Mode Mode Register
Dn (xxx).W 111 000
An (xxx).L 111 001
(An) 010 reg. number:An #<data>
(An) +
– (An)
(d
16
,An) 101 reg. number:An (d
16
,PC) 111 010
(d
8
,An,Xn) 110 reg. number:An (d
8
,PC,Xn) 111 011
MC68020, MC68030, and MC68040 only
(bd,An,Xn)* 110 reg. number:An (bd,PC,Xn)* 111 011
([bd,An,Xn],od) 110 reg. number:An ([bd,PC,Xn],od) 111 011
([bd,An],Xn,od) 110 reg. number:An ([bd,PC],Xn,od) 111 011
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