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CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS
6.65 PUSHW (PUSH Word Data of Inherent Register to Stack
Memory)
Subtract 2 from the value of SP. Then, transfer the word value from the memory
indicated by SP to dr.
■ PUSHW (PUSH Word Data of Inherent Register to Stack Memory)
Operation
(SP) ← (SP) - 2 (Word subtraction)
((SP)) ← (dr) (Word transfer)
Assembler format
PUSHW dr
Condition code (CCR)
+: Changed by executing instruction
-: Not changed
N: Not changed
Z: Not changed
V: Not changed
C: Not changed
NZVC
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Table 6.65-1 Number of Execution Cycles / Byte Count / OP Code
DR A IX
Number of execution
cycles
44
Byte count 1 1
OP code 40 41