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DP80390 датащи(PDF) 68 Page - Digital Core Design |
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DP80390 датащи(HTML) 68 Page - Digital Core Design |
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68 / 84 page ![]() DP80390 Instructions set details - 68 - All trademarks mentioned in this document http://www.DigitalCoreDesign.com are trademarks of their respective owners. http://www.dcd.pl Copyright 1999-2003 DCD – Digital Core Design. All Rights Reserved. 3.32. RET * 3.32.1. LARGE Function: Return from subroutine Description: RET pops the PC successively from the stack, decrementing the stack pointer by two. Program execution continues at the resulting address, generally the instruction immediately following an ACALL or LCALL. No flags are affected. Operation: (PC15-8) ← ((SP)) (SP) ← (SP) - 1 (PC7-0) ← ((SP)) (SP) ← (SP) - 1 Bytes: 1 Cycles: 4 Encoding: 0 0 1 0 0 0 1 0 3.32.2. FLAT Function: Return from subroutine Description: RET pops the PC successively from the stack, decrementing the stack pointer by three. Program execution continues at the resulting address, generally the instruction immediately following an ACALL or LCALL. No flags are affected. Operation: (PC23-16) ← ((SP)) (SP) ← (SP) - 1 (PC15-8) ← ((SP)) (SP) ← (SP) - 1 (PC7-0) ← ((SP)) (SP) ← (SP) - 1 Bytes: 1 Cycles: 5 Encoding: 0 0 1 0 0 0 1 0 * instruction modified regarding to standard 80C51 |
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