What Is RST 4.5 In 8085 Microprocessor?

RST 4.5 when used in the 8085 microprocessor is considered as a trap and when you come to the description of the trap in this context of 8085 microprocessor, it describes a non-maskable interrupt.
        
When the interrupt receives the signal, the processor comes to action and saves the contents of the PC register. It saves it in the stack and branches to the 24h address that conveys the idea of hexadecimal. The distinct feature of all maskable interrupts is that they can be enabled or disabled by the use of EI and DI instructions. When it comes to the RST 5.5, RST 6.5 and RST 7.5 interrupts, they can be made enabled or disabled individually by the use of the SIM instruction.