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DP80390 数据表(PDF) 67 Page - Digital Core Design |
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DP80390 数据表(HTML) 67 Page - Digital Core Design |
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67 / 84 page ![]() DP80390 Instructions set details - 67 - 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. 3.31. PUSH* 3.31.1. LARGE Instruction: PUSH direct Function: Push onto stack Description: The stack pointer is incremented by one. The contents of the indicated variable are then copied into the internal RAM location addressed by the stack pointer. Otherwise no flags are affected. Operation: (PC) ← (PC) + 2 (SP) ← (SP) + 1 ((SP)) ← (direct) Bytes: 2 Cycles: 3 Encoding: 1 1 0 0 0 0 0 0 direct address 3.31.2. FLAT Instruction: PUSH direct Function: Push onto stack Description: The stack pointer is incremented by one. The contents of the indicated variable are then copied into the internal RAM location addressed by the stack pointer. Otherwise no flags are affected. Operation: (PC) ← (PC) + 2 (SP) ← (SP) + 1 ((SP)) ← (direct) Bytes: 2 Cycles: 3 Encoding: 1 1 0 0 0 0 0 0 direct address * instruction timing is identical in FLAT and LARGE mode |
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