working on chapter 2

chapter_2/command.txt

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+compiling the startup file:
+    arm-none-eabi-as -o startup.o startup.s
+linking .o file:
+    arm-none-eabi-ld -o first-hang.elf startup.o
+convert the ELF to a raw binary dump
+    arm-none-eabi-objcopy -O binary first-hang.elf first-hang.bin
+Blastoff:
+    qemu-system-arm -M vexpress-a9 -m 32M -no-reboot -nographic -monitor telnet:127.0.0.1:1234,server,nowait -kernel first-hang.bin
+
+Telenet:
+    telnet localhost 1234
+
+Helpfull tools for visual code:
+    hexdump -> right click on .bin file and show hexdump 

chapter_2/startup.s

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+ldr r2,str1                 
+b .                         
+str1: .word 0xDEADBEEF    
+