B.ASM(24): error: A1859E: Flag preserving form of this instruction not available

Top replies

• 

  rkopsch over 1 year ago +2 verified
  https://community.arm.com/support-forums/f/keil-forum/43552/compilation-error-a1859e-flag-preserving-form-of-this-instruction-not-available confirms " The Cortex-M0 has a smaller instruction set which...
• 

  Ronan Synnott over 1 year ago in reply to Vipin Vibhute +2 verified
  This device uses Arm7TDMI-S, which is an Armv4T architecture. You can see the definition of all available instructions in the Arm Architecture Reference Manual: https://developer.arm.com/documentation...
• 

  Broeker over 1 year ago in reply to Vipin Vibhute +1 verified
  Write your code correctly, using only instruction actually available on the target hardware.