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Push Data-Memory Value Onto Stack
PSHD
7-139
Assembly Language Instructions
Syntax PSHD
dma
Direct addressing
PSHD
ind
[, AR
n
] Indirect addressing
Operands dma: 7 LSBs of the data-memory address
n: Value from 0 to 7 designating the next auxiliary register
ind: Select one of the following seven options:
* *+ *– *0+ *0– *BR0+ *BR0–
PSHD
dma
1514131211109876543210
0
11101100 dma
PSHD
ind
[, AR
n
]
1514131211109876543210
0
11101101 ARU N NAR
Note: ARU, N, and NAR are defined in Section 6.3,
Indirect Addressing Mode
(page 6-9).
Execution Increment PC, then ...
(data-memory address) → TOS
Push all stack locations down one level
Status Bits None
Description The value from the data-memory location specified by the instruction is trans-
ferred to the top of the stack. In the lower seven locations of the stack, the val-
ues are also copied one level down, as explained in the description for the
PUSH instruction. The value in the lowest stack location is lost.
Words 1
Cycles for a Single PSHD Instruction
Program
Operand ROM DARAM SARAM External
DARAM 1 1 1 1+p
SARAM 1 1 1, 2
†
1+p
External 1+d 1+d 1+d 2+d+p
†
If the operand and the code are in the same SARAM block
Opcode
Cycles