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PM0044 数据表(PDF) 109 Page - STMicroelectronics |
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PM0044 数据表(HTML) 109 Page - STMicroelectronics |
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109 / 162 page ![]() PM0044 STM8 instruction set Doc ID 13590 Rev 3 109/162 Syntax IRET Operation CC = (++SP) A = (++SP) XH = (++SP) XL = (++SP) YH = (++SP) YL = (++SP) PCE = (++SP) PCH = (++SP) PCL = (++SP) Description Placed at the end of an interrupt routine, returns to the original program context before the interrupt occurred. All registers, which have been saved/pushed onto the stack are restored/popped. The I bit will be reset if the corresponding bit stored on the stack is zero. Instruction overview Condition flags set or reset according to the first byte pulled from the stack. Detailed description See also: Interrupts, TRAP IRET Interrupt Return IRET mnem Affected condition flags VI1 H I0 N Z C IRET V I1 H I0 N Z C Addressing mode Asm cy lgth Op-code(s) ST7 Inherent IRET 11 180 ✗ |
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