Omron SYSMAC CJ - REFERENCE MANUAL 08-2008

75
Instruction Functions Section 2-2
2-2-15 Table Data Processing Instructions
Instruction
Mnemonic
Code
Symbol/Operand Function Location
Execution
condition
Page
SET STACK
SSET
@SSET
630
Output
Required
703
PUSH ONTO
STACK
PUSH
@PUSH
632
Output
Required
706
LAST IN FIRST
OUT
LIFO
@LIFO
634
Output
Required
712
FIRST IN FIRST
OUT
FIFO
@FIFO
633
Output
Required
709
SSET(630)
TB
N
TB: 1st stack
address
N: Number of
words
TB
TB+1
TB+2
TB+3
m+(N−1)
m+(N
−1)
Defines a stack of the specified length beginning at the specified word
and initializes the words in the data region to all zeroes.
Internal I/O
memory address
N words
in stack
Stack
pointer
Last word
in stack
PUSH(632)
TB
S
TB: 1st stack
address
S: Source word
TB
TB+1
TB+2
TB+3
TB
TB+1
TB+2
TB+3
PUSH(632)
Writes one word of data to the specified stack.
Internal I/O
memory address
Internal I/O
memory address
LIFO(634)
TB
D
TB: 1st stack
address
D: Destination
word
TB
TB+1
TB+2
TB+3
TB
TB+1
TB+2
TB+3
−1
m
−1
m
−1
m
Last-in first-out
The pointer is
decremented.
Stack
pointer
Newest
data
Internal I/O
memory address
Stack
pointer
Reads the last word of data written to the specified stack (the newest
data in the stack).
Internal I/O
memory address
A is left
un-
changed.
FIFO(633)
TB
D
TB: 1st stack
address
D: Destination
word
m−1
TB
TB+1
TB+2
TB+3
TB
TB+1
TB+2
TB+3
m−1
First-in first-out
Reads the first word of data written to the specified stack (the oldest
data in the stack).
Internal I/O
memory address
Internal I/O
memory address
Oldest
data
Stack
pointer
Stack
pointer