Hello, can you adjust the code below so it prints 8 horizontal stripes to the Bitmap display, this is coded using RISC-V.                          .text main: # set-up trap handler   la s0,trap_handler   csrw s0,utvec       # set utvec = address of the handler     # enable processing of interrup requests from timer   li s1,0x10           csrw s1,uie         # set uie = 0x10      # enable interrupts in CPU   csrsi ustatus,1    # set interrupt enable bit in ustatus (0)      # ask timer, which is part of Digital Lab Sim tool,   # to generate interrupts every 30 instructions   # (see Digital Lab Sim help file for detail)   li s1, 0xffff0013   li s0, 1   sb s0, 0(s1)          j process_1        # start running process_1     # only registers s0-s3 are saved as process context  # and can be used by the process code.   # ---------------------------------------     process_1: li s1,0xffff0010 loop_1: li s0,0x3f sb s0,0(s1) li s0,0x06 sb s0,0(s1) li s0,0x5B sb s0,0(s1) li s0,0x4F sb s0,0(s1) j loop_1   # ---------------------------------------   process_2: li s1,0xffff0011 loop_2: li s0,0x3f sb s0,0(s1) li s0,0x06 sb s0,0(s1) li s0,0x5B sb s0,0(s1) li s0,0x4F sb s0,0(s1) j loop_2   # ---------------------------------------     trap_handler:    # save process context (i.e. CPU registers) into the current trap frame   csrw s0,uscratch    # copy value of s0 into uscratch temporarily la s0, current_process_trap_frame lw s0, 0(s0)        # load address of the current trap_frame into s0 sw s1, 8(s0)        # save value of s1 into the trap frame sw s2,12(s0)        # save value of s2 into the trap frame sw s3,16(s0)        # save value of s3 into the trap frame csrr s1, uscratch   # get value of s0 from uscratch into s1 sw s1, 4(s0)        # save value of s0 into the trap frame csrr s1, uepc       # get value of pc from uepc into s1 sw s1, 0(s0)        # save value of pc into the trap frame   # switch to the next process   lw s1, 20(s0)       # load address of the next trap frame to run la s0, current_process_trap_frame         sw s1, 0(s0)        # save it into the currernt trap frame pointer     # restore process context (CPU registers) from the selected trap frame  # and continue running   mv s0,s1            # address of selected process trap frame in s0 lw s1,0(s0)         # saved value of pc in s1 csrw s1,uepc        # we put it to uepc for uret to consume lw s1,4(s0)         # load saved value of s0 csrw s1,uscratch    # put it to uscratch temporarily lw s1,8(s0)         # restore saved value of s1 lw s2,12(s0)        # restore saved value of s2 lw s3,16(s0)        # restore saved value of s3         csrr s0,uscratch    # restore s0 from uscratch          uret                # restore pc from uepc and continue running                    # selected process   .data   # Pointer to the trap frame corresponding to the currently running process   current_process_trap_frame: .wordtrap_frame_1   # Different trap frames are used for storing contexts of # individual processes   trap_frame_1: .word process_1    # pc    (trap_frame + 0)  - initialise to the starting address .word 0            # s0    (trap_frame + 4) .word 0            # s1    (trap_frame + 8)  .word 0            # s2    (trap_frame + 12)  .word 0            # s3    (trap_frame + 16)  .word trap_frame_2 # next  (trap_frame + 20)   trap_frame_2: .word process_2    # pc    (trap_frame + 0)  - initialise to the starting address .word 0            # s0    (trap_frame + 4) .word 0            # s1    (trap_frame + 8) .word 0            # s2    (trap_frame + 12)  .word 0            # s3    (trap_frame + 16)  .word trap_frame_1 # next  (trap_frame + 20)

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Hello, can you adjust the code below so it prints 8 horizontal stripes to the Bitmap display, this is coded using RISC-V. 

               
        .text
main:
# set-up trap handler
  la s0,trap_handler
  csrw s0,utvec       # set utvec = address of the handler
 
  # enable processing of interrup requests from timer
  li s1,0x10        
  csrw s1,uie         # set uie = 0x10 
 
  # enable interrupts in CPU
  csrsi ustatus,1    # set interrupt enable bit in ustatus (0) 
 
  # ask timer, which is part of Digital Lab Sim tool,
  # to generate interrupts every 30 instructions
  # (see Digital Lab Sim help file for detail)
  li s1, 0xffff0013
  li s0, 1
  sb s0, 0(s1)       
 
j process_1        # start running process_1
 
 
# only registers s0-s3 are saved as process context 
# and can be used by the process code.
 
# ---------------------------------------
 
 
process_1:
li s1,0xffff0010
loop_1:
li s0,0x3f
sb s0,0(s1)
li s0,0x06
sb s0,0(s1)
li s0,0x5B
sb s0,0(s1)
li s0,0x4F
sb s0,0(s1)
j loop_1
 
# ---------------------------------------
 
process_2:
li s1,0xffff0011
loop_2:
li s0,0x3f
sb s0,0(s1)
li s0,0x06
sb s0,0(s1)
li s0,0x5B
sb s0,0(s1)
li s0,0x4F
sb s0,0(s1)
j loop_2
 
# ---------------------------------------
 
 
trap_handler: 
 
# save process context (i.e. CPU registers) into the current trap frame
 
csrw s0,uscratch    # copy value of s0 into uscratch temporarily
la s0, current_process_trap_frame
lw s0, 0(s0)        # load address of the current trap_frame into s0
sw s1, 8(s0)        # save value of s1 into the trap frame
sw s2,12(s0)        # save value of s2 into the trap frame
sw s3,16(s0)        # save value of s3 into the trap frame
csrr s1, uscratch   # get value of s0 from uscratch into s1
sw s1, 4(s0)        # save value of s0 into the trap frame
csrr s1, uepc       # get value of pc from uepc into s1
sw s1, 0(s0)        # save value of pc into the trap frame
 
# switch to the next process
 
lw s1, 20(s0)       # load address of the next trap frame to run
la s0, current_process_trap_frame
        sw s1, 0(s0)        # save it into the currernt trap frame pointer  
 
# restore process context (CPU registers) from the selected trap frame 
# and continue running
 
mv s0,s1            # address of selected process trap frame in s0
lw s1,0(s0)         # saved value of pc in s1
csrw s1,uepc        # we put it to uepc for uret to consume
lw s1,4(s0)         # load saved value of s0
csrw s1,uscratch    # put it to uscratch temporarily
lw s1,8(s0)         # restore saved value of s1
lw s2,12(s0)        # restore saved value of s2
lw s3,16(s0)        # restore saved value of s3
        csrr s0,uscratch    # restore s0 from uscratch
        
uret                # restore pc from uepc and continue running
                   # selected process
 
.data
 
# Pointer to the trap frame corresponding to the currently running process
 
current_process_trap_frame:
.wordtrap_frame_1
 
# Different trap frames are used for storing contexts of
# individual processes
 
trap_frame_1:
.word process_1    # pc    (trap_frame + 0)  - initialise to the starting address
.word 0            # s0    (trap_frame + 4)
.word 0            # s1    (trap_frame + 8) 
.word 0            # s2    (trap_frame + 12) 
.word 0            # s3    (trap_frame + 16) 
.word trap_frame_2 # next  (trap_frame + 20)
 
trap_frame_2:
.word process_2    # pc    (trap_frame + 0)  - initialise to the starting address
.word 0            # s0    (trap_frame + 4)
.word 0            # s1    (trap_frame + 8)
.word 0            # s2    (trap_frame + 12) 
.word 0            # s3    (trap_frame + 16) 
.word trap_frame_1 # next  (trap_frame + 20)
 
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