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CHAPTER 6 DETAILED RULES FOR EXECUTION INSTRUCTIONS
6.17 CALL (CALL subroutine)
Branch to address of ext. Return to the instruction next to this one by using the RET
instruction of the branch subroutine.
■ CALL (CALL subroutine)
Operation
(SP) ← (SP) - 2 (Word subtraction), ((SP)) ← (PC) (Word transfer)
(PC) ← ext
Assembler format
CALL ext
Condition code (CCR)
+: Changed by executing instruction
-: Not changed
N: Not changed
Z: Not changed
V: Not changed
C: Not changed
Number of execution cycles: 6
Byte count: 3
OP code: 31
NZVC
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