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SAM87RI INSTRUCTION SET
KS86C6004/C6008/P6008 MICROCONTROLLER (Preliminary Spec)
6–38
RET
— Return
RET
Operation:
PC
←
@SP
SP
←
SP + 2
The RET instruction is normally used to return to the previously executing procedure at the end of
a procedure entered by a CALL instruction. The contents of the location addressed by the stack
pointer are popped into the program counter. The next statement that is executed is the one that
is addressed by the new program counter value.
Flags:
No flags are affected.
Format:
Bytes
Cycles
Opcode
(Hex)
opc
1
14
AF
Example:
Given: SP = 0BCH, (SP) = 101AH, and PC = 1234:
RET
→
PC = 101AH, SP = 0BEH
The statement "RET" pops the contents of stack pointer location 0BCH (10H) into the high byte of
the program counter. The stack pointer then pops the value in location 0BDH (1AH) into the PC's
low byte and the instruction at location 101AH is executed. The stack pointer now points to
memory location 0BEH.
Содержание KS86C6004
Страница 19: ...ADDRESS SPACES KS86C6004 C6008 P6008 MICROCONTROLLER Preliminary Spec 2 8 NOTES ...
Страница 61: ...CONTROL REGISTERS KS86C6004 C6008 P6008 MICROCONTROLLER Preliminary Spec 4 30 NOTES ...
Страница 120: ...CLOCK CIRCUIT KS86C6004 C6008 P6008 MICROCONTROLLERS Preliminary Spec 7 4 NOTES ...
Страница 134: ...I O PORTS KS86C6004 C6008 P6008 MICROCONTROLLER Preliminary Spec 9 10 NOTES ...
Страница 143: ...KS86C6004 C6008 P6008 MICROCONTROLLER Preliminary Spec BASIC TIMER and TIMER 0 10 9 NOTES ...
Страница 162: ...KS86C6004 C6008 P6008 MICROCONTROLLER Preliminary Spec ELECTRICAL DATA 12 9 ...
Страница 164: ...KS86C6004 C6008 P6008 MICROCONTROLLER Preliminary Spec ELECTRICAL DATA 12 11 NOTES ...
Страница 172: ...KS86P6008 OTP KS86C6004 C6008 P6008 MICROCONTROLLER Preliminary Spec 14 6 NOTES ...