У всех своя логика. The Keil development tools may be used with a large number of devices. Full simulation capabilities are available for most of these.
Our development team is constantly adding support for new devices. However, new devices are introduced about every two weeks and we are not always able to keep up.
Check the Device Database and select the chip you use to see a complete list of simulated features. When we add simulation support for a new part, it will be listed there.
Simulation for this device is provided by the default peripheral simulation driver.
Complete peripheral simulation is not available and is not planned to be implemented by ARM.
https://www.keil.com/support/docs/1906.htm
https://www.keil.com/dd/chip/7306.htm