The reset value of GPIOB register of STM32F401RCT6

[Pzhu.1]

When I simulate STM32401RCT6 with IAR，the MCU is on reset state；IAR shows the value of GPIOB register ：ODR=0x00000280；but refer to the reference manual ，the reset value of GPIOx_ODR=0x00000000.

Did I do something wrong when simulated?

Thanks very much.

[waclawek.jan]

None of those registers should be 0x280, so there is some code which wrote to them, or something is wrong with your IDE.

JW