PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 308

• Manufacturer Part Number: PIC18F258
• Description: High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18FXX8
POP
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
DS41159B-page 306
Q Cycle Activity:
Before Instruction
After Instruction
Decode
TOS
Stack (1 level down)
TOS
PC
Q1
operation
Pop Top of Return Stack
[ label ]
None
(TOS)
None
The TOS value is pulled off the
return stack and is discarded. The
TOS value then becomes the previ-
ous value that was pushed onto the
return stack.
This instruction is provided to
enable the user to properly manage
the return stack to incorporate a
software stack.
1
1
POP
GOTO
0000
No
Q2
bit bucket
POP
0000
NEW
POP TOS
=
=
=
=
value
Q3
0x0031A2
0x014332
0x014332
NEW
0000
operation
No
Q4
0110
PUSH
Syntax:
Operands:
Operation:
Status Affected:
Encoding:
Description:
Words:
Cycles:
Example:
Q Cycle Activity:
Before Instruction
After Instruction
Decode
TOS
PC
PC
TOS
Stack (1 level down)
Q1
PUSH PC+2
onto return
Push Top of Return Stack
[ label ]
None
(PC+2)
None
The PC+2 is pushed onto the top of
the return stack. The previous TOS
value is pushed down on the stack.
This instruction allows the user to
implement a software stack by
modifying TOS, and then push it
onto the return stack.
1
1
PUSH
stack
0000
Q2
2002 Microchip Technology Inc.
PUSH
TOS
0000
operation
=
=
=
=
=
No
Q3
0x00345A
0x000124
0x000126
0x000126
0x00345A
0000
operation
Q4
No
0101