MC68HC11E1 MOTOROLA [Motorola, Inc], MC68HC11E1 Datasheet - Page 21

• Manufacturer Part Number: MC68HC11E1
• Description: M68HC11E Series Programming Reference Guide
• Manufacturer: MOTOROLA [Motorola, Inc]

Special Operations
MOTOROLA
JSR, JUMP TO SUBROUTINE
INDEXED, X
INDEXED, Y
INDEXED, Y
BSR, BRANCH TO SUBROUTINE
RTS, RETURN FROM
SUBROUTINE
DIRECT
PC
PC
MAIN PROGRAM
MAIN PROGRAM
RTN
$8D = BSR
RTN
RTN
RTN
$39 = RTS
PC
PC
PC
PC
NEXT MAIN INSTR.
NEXT MAIN INSTR.
NEXT MAIN INSTR.
NEXT MAIN INSTR.
MAIN PROGRAM
MAIN PROGRAM
MAIN PROGRAM
MAIN PROGRAM
$AD = JSR
$AD = JSR
$BD = PRE
$9D = JSR
$18 = PRE
hh
dd
ff
ff
ll
⇑
⇑
SP–1
SP+1
M68HC11E Series Programming Reference Guide
SP–2
SP+2
SP
SP
7
7
⇑
SP–1
STACK
STACK
SP–2
SP
RTN
RTN
RTN
RTN
7
H
H
L
L
STACK
RTN
RTN
0
0
H
L
0
LEGEND:
RTN
RTN
RTN = ADDRESS OF NEXT INSTRUCTION IN MAIN PROGRAM TO
⇑
RTI, RETURN FROM INTERRUPT
SWI, SOFTWARE INTERRUPT
WAI, WAIT FOR INTERRUPT
dd = 8-BIT DIRECT ADDRESS ($0000–$00FF) (HIGH BYTE ASSUMED
hh = HIGH-ORDER BYTE OF 16-BIT EXTENDED ADDRESS
rr = SIGNED RELATIVE OFFSET $80 (–128) TO $7F (+127) (OFFSET
H
ff = 8-BIT POSITIVE OFFSET $00 (0) TO $FF (255) IS ADDED TO INDEX
L
ll = LOW-ORDER BYTE OF 16-BIT EXTENDED ADDRESS
= MOST SIGNIFICANT BYTE OF RETURN ADDRESS
= LEAST SIGNIFICANT BYTE OF RETURN ADDRESS
= STACK POINTER POSITION AFTER OPERATION IS COMPLETE
PC
PC
PC
BE EXECUTED UPON RETURN FROM SUBROUTINE
TO BE $00)
RELATIVE TO THE ADDRESS FOLLOWING THE MACHINE CODE
OFFSET BYTE)
INTERRUPT ROUTINE
MAIN PROGRAM
MAIN PROGRAM
$3E = WAI
$3F = SWI
$3B = RTI
⇑
⇑
SP+1
SP+2
SP+3
SP+4
SP+5
SP+6
SP+7
SP+8
SP–8
SP–7
SP–6
SP–5
SP–4
SP–3
SP–2
SP–1
SP+9
SP
SP–9
SP
7
7
STACK
STACK
ACCB
ACCA
RTN
ACCB
ACCA
RTN
RTN
RTN
CCR
CCR
IX
IX
IY
IY
IX
IX
IY
IY
Special Operations
M68HC11ERG/AD
H
L
H
L
H
L
H
L
H
H
L
L
0
0
21