This subject is computer Architecture organization
Draw a flowchart showing the steps for a CPU program that uses programmed I/O to send a string consisting of 10 characters to a printer connected through a UART interface. Assume that the string is stored in memory starting at address 100.
Consider the following while developing your flowchart:
Assume that the interface has already been initialized to work in the right mode of operation
Show each memory or I/O read or write operation as an explicit step in your flowchart
Assume that the CPU has multiple data registers R1, R2, ... etc. If you need variables for your algorithm (e.g. for counters or addresses), you can use a register to store and maintain such variables.