Merge branch 'master' of https://github.com/Rhodez-x/SingOS

source/generic_build.sh

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+as $1.s -o ../compile_folder/$2.o
+ld -Ttext 0x7c00 --oformat=binary ../compile_folder/$2.o -o ../compile_folder/$2.bin
+dd if=../compile_folder/$2.bin of=../compile_folder/$2.img

source/mytest.s

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+#generate 16-bit code
+.code16
+
+#hint the assembler that here is the executable code located
+.text
+.globl _start;
+#boot code entry
+_start:
+  jmp _boot
+start: .asciz "Start.\n\r"
+error: .asciz "Error.\n\r"
+succes: .asciz "Succes.\n\r"
+ffs: .asciz "F.\n\r"
+end: .asciz "End.\n\r"
+    
+.macro mWriteString str              #macro which calls a function to print a string
+  leaw  \str, %si
+  call .writeStringIn
+.endm
+
+# function to print the string
+.writeStringIn:
+    lodsb
+    orb  %al, %al
+    jz   .writeStringOut
+    movb $0x0e, %ah
+    int  $0x10
+    jmp  .writeStringIn
+  .writeStringOut:
+ret
+  
+
+_boot:
+  mWriteString start
+  
+  #This goes first as to now overwrite %ah and %al.
+  mov $0x00, %ax
+  mov %ax, %es #Section to write into
+  
+  mov $0x02, %ah # Read sectors from drive
+  mov $0x01, %al # Number of sectors to read
+  mov $0x00, %ch # Low 8 bits of cylinder
+  mov $0x02, %cl # First sector to read (bits 0-5), upper bits of cylinder (bits 6-7)
+  mov $0x00, %dh # Head number
+  mov $0x00, %dl # Drive number
+#  mov $0x00, %es
+  mov $0xFF, %bx #Offset into section
+  int $0x13 # Low level disk services
+  
+  jnc notcarry
+  mWriteString error
+  jmp endcarrycheck
+  
+  notcarry:
+  mWriteString succes
+  #fallthrough
+  
+  endcarrycheck:
+  
+  mWriteString mystr
+  
+  mWriteString end
+  
+  #
+
+
+
+#move to 510th byte from the start and append boot signature
+. = _start + 510
+.byte 0x55
+.byte 0xaa
+
+mystr: .asciz "asdf"
+
+. = _start + 1023
+.byte 0x00