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PSHC
(SP) – $0001 ⇒ SP
Operation:
(CCR) ⇒ M
Description:
Stacks the content of the condition codes register. The stack pointer is
decremented by one. The content of the CCR is then stacked at the ad-
dress to which the SP points.
Push instructions are commonly used to save the contents of one or
more CPU registers at the start of a subroutine. Complementary pull in-
structions can be used to restore the saved CPU registers just before re-
turning from the subroutine.
Condition Codes and Boolean Formulas:
S
–
None affected.
Addressing Modes, Machine Code, and Execution Times:
Source Form
PSHC
MOTOROLA
6-156
Push CCR onto Stack
(SP)
X
H
I
N
Z
–
–
–
–
–
Address Mode
INH
39
INSTRUCTION GLOSSARY
V
C
–
–
Object Code
PSHC
Cycles
Access Detail
2
Os
CPU12
REFERENCE MANUAL
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