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Return from Subroutine

Table of Contents

7	6	5	4	3	2	1	0

\(PC_l \longleftarrow (SP) \\ PC_h \longleftarrow (SP+1) \\ SP \longleftarrow SP+2\)
RET
1	1	0	0	1	0	0	1

\(\begin{rcases} PC_l \longleftarrow (SP) \\ PC_h \longleftarrow (SP+1) \\ SP \longleftarrow SP+2 \end{rcases} \text{ if } ccc = true\)
RET ccc
1	1	ccc			0	0	0

Conditions
ccc	Abbrev	Condition	Flag
000	NZ	Non Zero	Z
001	Z	Zero	Z
010	NC	No Carry	C
011	C	Carry	C
100	PO	Parity Odd	P/V
101	PE	Parity Even	P/V
110	P	Sign Positive	S
111	M	Sign Negative	S

Timing

The unconditional RET takes 10 (4,3,3) T-States. The conditional RET takes 17(5,3,3) T-States if the condition is true and 5 T-States if false and no return was performed.

Flags Affected

None.

Opcode Matrix

	Uncond	C	NC	Z	NZ	PE	PO	N	P
RET	RET C9110	RET C D8111	RET NC D0111	RET Z C8111	RET NZ C0111	RET PE E8111	RET PO E0111	RET N F8111	RET P F0111

Opcode Matrix Legend
Instruction Opcode hexSize bytesCycle count		Flow