MC68HC711PH8 Motorola, MC68HC711PH8 Datasheet - Page 213

• Manufacturer Part Number: MC68HC711PH8
• Description: High-density Complementary Metal Oxide Semiconductor (HCMOS) Microcomputer Unit
• Manufacturer: Motorola

JSR, Jump to subroutine
RTS, Return from subroutine
MC68HC11PH8
EXTEND
DIRECT
IND, X
IND, Y
RTN
RTN
RTN
RTN
PC
PC
PC
PC
PC
LEGEND
RTN
Main program
Main program
Main program
Main program
Main program
RTN
Next instruction
Next instruction
Next instruction
Next instruction
RTN Address of the next instruction in the main program, to be executed on return from subroutine
$AD = JSR
$AD = JSR
$BD = JSR
$9D = JSR
$18 = PRE
$39 = RTS
dd 8-bit direct address ($0000Ð$00FF); the high byte is assumed to be $00
hh High order byte of 16-bit extended address
rr Signed relative offset ($80 to $7F (Ð128 to +127)); offset is relative to the address following the offset byte
H
ff 8-bit positive offset ($00 to $FF (0 to 256)) is added to the index register contents
L
ll Low order byte of 16-bit extended address
dd
hh
ff
ff
ll
More signiÞcant byte of return address
Less signiÞcant byte of return address
Shaded cells show stack pointer position after the operation is complete
CPU CORE AND INSTRUCTION SET
Figure 11-2 Stacking operations
SPÐ2
SPÐ1
SP+1
SP+2
SP
SP
Stack
Stack
RTN
RTN
RTN
RTN
H
H
L
L
BSR, Branch to subroutine
WAI, Wait for interrupt
SWI, Software interrupt
RTI, Return from interrupt
RTN
RTN
RTN
PC
PC
PC
PC
Interrupt program
Next instruction
Main program
Main program
Main program
$8D = BSR
$3B = RTI
$3F = SWI
$3E = WAI
rr
SP+1
SP+2
SP+3
SP+4
SP+5
SP+6
SP+7
SP+8
SP+9
SPÐ2
SPÐ1
SPÐ9
SPÐ8
SPÐ7
SPÐ6
SPÐ5
SPÐ4
SPÐ3
SPÐ2
SPÐ1
SP
SP
SP
Index register (IX
Index register (IY
Index register (IX
Index register (IY
Index register (IX
Index register (IY
Index register (IX
Index register (IY
MOTOROLA
Condition Code
Condition Code
Accumulator B
Accumulator A
Accumulator B
Accumulator A
Stack
Stack
Stack
RTN
RTN
RTN
RTN
RTN
RTN
H
H
H
L
L
L
TPG
11-3
H
L
H
L
H
L
H
L
)
)
)
)
)
)
)
)
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