old_contents: #!/usr/bin/env python3
  
  import subprocess
  import argparse
  
  parser = argparse.ArgumentParser(description="QEMU run tool", formatter_class=argparse.RawTextHelpFormatter)
  parser.add_argument("bin", help="Kernel binary image to load")
  parser.add_argument("-debug", help="Enable QEMU GDB mode and halt execution after reset", default=False, action="store_true")
  parser.add_argument("-memsize", help="RAM size", default="1G")
  parser.add_argument("-cpu", help='''
                                  Type of CPU. Select from:
                                  - cortex-a53
                                  - cortex-a57
                                  - cortex-a72
                                  ''', default="cortex-a53")
  parser.add_argument("-cores", help="Number of cores to emulate", default=1)
  parser.add_argument("-graphics", help="Enable graphical mode (i.e. display)", default=False, action="store_true")
  parser.add_argument("-dtb", help="Use the given DeviceTree blob file", default="")
  
  args = parser.parse_args()
  
  qemu = ["qemu-system-aarch64", "-M", "virt"]
  qemu += ["-m", args.memsize]
  qemu += ["-cpu", args.cpu]
  qemu += ["-smp", "cores="+ str(args.cores)]
  if not args.graphics:
      qemu += ["-nographic"]
  if args.debug:
      qemu += ["-s", "-S"]
  if args.dtb != "":
      qemu += ["-dtb", args.dtb]
  qemu += ["-kernel", args.bin]
  
  print("Running QEMU ARM Virt platform with command-line: " + ' '.join(qemu))
  print("CPU: " + args.cpu + " CORES: " + str(args.cores))
  print("RAM SIZE: " + args.memsize)
  if args.graphics:
      print("Running with graphics enabled")
  if args.debug:
      print("Running with GDB mode enabled. Execution halted by QEMU. You will need to use GDB to continue running the code.")
  
  subprocess.call(qemu)
  
new_contents: #!/usr/bin/env python3
  
  import subprocess
  import argparse
  
  parser = argparse.ArgumentParser(description="QEMU run tool", formatter_class=argparse.RawTextHelpFormatter)
  parser.add_argument("bin", help="Kernel binary image to load")
  parser.add_argument("-debug", help="Enable QEMU GDB mode and halt execution after reset", default=False, action="store_true")
  parser.add_argument("-memsize", help="RAM size", default="512M")
  parser.add_argument("-cpu", help='''
                                  Type of CPU. Select from:
                                  - cortex-a53
                                  - cortex-a57
                                  - cortex-a72
                                  ''', default="cortex-a53")
  parser.add_argument("-cores", help="Number of cores to emulate", default=1)
  parser.add_argument("-graphics", help="Enable graphical mode (i.e. display)", default=False, action="store_true")
  parser.add_argument("-dtb", help="Use the given DeviceTree blob file", default="")
  
  args = parser.parse_args()
  
  qemu = ["qemu-system-aarch64", "-M", "virt"]
  qemu += ["-m", args.memsize]
  qemu += ["-cpu", args.cpu]
  qemu += ["-smp", "cores="+ str(args.cores)]
  if not args.graphics:
      qemu += ["-nographic"]
  if args.debug:
      qemu += ["-s", "-S"]
  if args.dtb != "":
      qemu += ["-dtb", args.dtb]
  qemu += ["-kernel", args.bin]
  
  print("Running QEMU ARM Virt platform with command-line: " + ' '.join(qemu))
  print("CPU: " + args.cpu + " CORES: " + str(args.cores))
  print("RAM SIZE: " + args.memsize)
  if args.graphics:
      print("Running with graphics enabled")
  if args.debug:
      print("Running with GDB mode enabled. Execution halted by QEMU. You will need to use GDB to continue running the code.")
  
  subprocess.call(qemu)
  
subject: Revert back to using 512MB of RAM