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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 does not support the form used. Pick a different encoding or multiple instructions to replace the one you are using"
I am doing program for LPC2148 in assembly
What Arm/Keil product do you have in use?
I am doing program for LPC2148 in assembly in Keil 4.60
I am doing program for LPC2148 in assembly in Keil 4.60Is there any solutions ??
Write your code correctly, using only instruction actually available on the target hardware.
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/ddi0100