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PM0215 数据表(PDF) 65 Page - STMicroelectronics |
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PM0215 数据表(HTML) 65 Page - STMicroelectronics |
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65 / 91 page ![]() PM0215 The STM32 Cortex-M0 instruction set Doc ID 022979 Rev 1 65/91 3.7.7 MSR Move the contents of a general-purpose register into the specified special register. Syntax MSR spec_reg, Rn where: ● ‘Rn’ is the general-purpose source register. ● ‘spec_reg’ is the special-purpose destination register: APSR, IPSR, EPSR, IEPSR, IAPSR, EAPSR, PSR, MSP, PSP, PRIMASK, or CONTROL. Operation MSR updates one of the special registers with the value from the register specified by Rn. See MRS on page 64. Restrictions Rn must not be SP and must not be PC. Condition flags This instruction updates the flags explicitly based on the value in Rn. Examples MSR CONTROL, R1 ; Read R1 value and write it to the CONTROL register |
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