mach create
# Load platform specification
machine LoadPlatformDescription @platforms/cpus/stm32f103.repl    
# Create additional semihosting interface peripheral
machine LoadPlatformDescriptionFromString "uartSemihosting: UART.SemihostingUart @ cpu"
# Open separate window for semihosting UART output
showAnalyzer sysbus.cpu.uartSemihosting

