Consider the following snapshot of a system at time to: process max allocation available a bc abcabc p 753 0103 3 2 p, 3 2 2 2 0 0 p, 90 2 302 p, 2 2 2 21 p 4 3 3 0 0 2
answer the following questions using the banker's algorithm:
a. what is the content of the matrix need at time to?
b. is the system in a safe state at time to?
c. if a request from process p1 arrives for ( 1, 0, 2) at time to, can the request be granted immediately?

Write a new lc-3 trap subroutine (i.e. a subroutine that will be invoked via the trap instruction) that will receive a numeric digit entered at the keyboard (i.e. an ascii character), echo it to the screen, and return in r0 the corresponding numeric value: so if the user types the digit '7', the character '7' will appear on the screen, but the value returned in r0 will be b0000 0000 0000 0111 (#7) you may not use any trap calls in your code - you must implement the "polling" code that interrogates the keyboard status and data registers. ; getnum_tsr ; a subroutine for obtaining a numeric value ; given ascii numeric digit input to keyboard. ; the numeric digit is echoed to the console (e.g. '7' = b0000 0000 0011 0111), ; but the value returned in r0 is the actual numeric value ; corresponding to the digit (e.g. b0000 0000 0000 0111 =