Write a RISC-style program that displays the name of the user backwards.  The program should display a prompt requesting that the characters in the user’s name be entered on the keyboard, followed by the carriage return (CR). The program should accept a sequence of characters and store them in the main memory. It should then display a message to indicate that the user’s name will be displayed backwards, followed by the display of the characters from the user’s name in reverse order. Note: All input/output should be done using the keyboard/display unit Below is the keynoard/display unit: Move                           R2, #LOC                                     ; load string address MoveByte                   R3, #CR                                     ; Load Carriage Return Read:               LoadByte                    R4, KBD_STATUS                       ; get status And                             R4, R4, #2                                     ; check KIN flag CmpBrZ                      R4, Read                                     ; if 0, no data LoadByte                    R5, KBD_DATA                ; get character StoreByte                    R5, (R2)                                     ; save in string Add                             R2, R2, #1                                    ; increment pointer Echo:               LoadByte                    R4, DISP_STATUS                       ; get display status And                             R4, R4, #4                                     ; check DOUT flag CmpBrZ                      R4, Echo                                     ; if 0, wait StoreByte                    R5, DISP_DATA               ; output character CmpBrNE                   R5, R3, Read                            ; if not CR, repeat

Write a RISC-style program that displays the name of the user backwards.  The program should display a prompt requesting that the characters in the user’s name be entered on the keyboard, followed by the carriage return (CR). The program should accept a sequence of characters and store them in the main memory. It should then display a message to indicate that the user’s name will be displayed backwards, followed by the display of the characters from the user’s name in reverse order. Note: All input/output should be done using the keyboard/display unit

Below is the keynoard/display unit:

Move                           R2, #LOC                                     ; load string address

MoveByte                   R3, #CR                                     ; Load Carriage Return

Read:               LoadByte                    R4, KBD_STATUS                       ; get status

And                             R4, R4, #2                                     ; check KIN flag

CmpBrZ                      R4, Read                                     ; if 0, no data

LoadByte                    R5, KBD_DATA                ; get character

StoreByte                    R5, (R2)                                     ; save in string

Add                             R2, R2, #1                                    ; increment pointer

Echo:               LoadByte                    R4, DISP_STATUS                       ; get display status

And                             R4, R4, #4                                     ; check DOUT flag

CmpBrZ                      R4, Echo                                     ; if 0, wait

StoreByte                    R5, DISP_DATA               ; output character

CmpBrNE                   R5, R3, Read                            ; if not CR, repeat