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TMS320F Datasheet(PDF) 241 Page - Texas Instruments |
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TMS320F Datasheet(HTML) 241 Page - Texas Instruments |
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241 / 389 page  Return From Subroutine RET 7-141 Assembly Language Instructions Syntax RET Operands None Opcode 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 0 0 0 0 0 0 0 1 1 1 1 0 1 1 1 Execution (TOS) → PC Pop stack one level. Status Bits None Description The contents of the top stack register are copied into the program counter. The remaining stack values are then copied up one level. RET concludes subrou- tines and interrupt service routines to return program control to the calling or interrupted program sequence. Words 1 Cycles for a Single RET Instruction ROM DARAM SARAM External 4 4 4 4+3p Note: When this instruction reaches the execute phase of the pipeline, two additional instruc- tion words have entered the pipeline. When the PC discontinuity is taken, these two instruction words are discarded. Example RET Before Instruction After Instruction PC 96h PC 37h Stack 37h Stack 45h 45h 75h 75h 21h 21h 3Fh 3Fh 45h 45h 6Eh 6Eh 6Eh 6Eh 6Eh Cycles |
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