First commit

legacy/README.md

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+SingOs

legacy/compile_folder/README.md

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+Folder of compiling the OS
+This folder has to be empty on the repository

legacy/source/build.sh

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+as sing_boot_alt.s -o ../compile_folder/alt.o
+ld -Ttext 0x7c00 --oformat=binary ../compile_folder/alt.o -o ../compile_folder/sing.bin
+dd if=../compile_folder/sing.bin of=../compile_folder/sing.img

legacy/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

legacy/source/info.txt

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+https://www.codeproject.com/Articles/664165/Writing-a-boot-loader-in-Assembly-and-C-Part
+
+http://www.computer-engineering.org/index.html // keyboard and mouse programming

legacy/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

legacy/source/mytest2.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"
+derpy2str: .asciz "This is from derpy2.\n\r"
+cookies: .word derpy2
+
+.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
+  
+  movb $0x0e, %ah
+  movb $'X', %al
+  int $0x10
+  
+  movb $'\n', %al
+  int $0x10
+  
+  movb $'\r', %al
+  int $0x10
+  
+  lgdt gdtdesc
+  
+  #movb $42, %bl #NOT 'A'
+  #movb %bl, 0x512
+  
+  #This goes first as to now overwrite %ah and %al.
+  mov $0x00, %ax
+  #mov $0x08, %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 $0x7e00, %bx #Offset into section
+  mov $(_start+0x200), %bx #Offset into section
+  #mov $0x0, %bx #Offset into section
+  int $0x13 # Low level disk services
+  
+  jnc notcarry
+  #mWriteString error
+  jmp endcarrycheck
+  
+  notcarry:
+  #mWriteString succes
+  
+  #mov $0x7000, %ax
+  #movb (%ax), %bl
+  #movb %bl, ffs
+  #movb 0x7000, %bl
+  #movb %bl, ffs
+  #mWriteString ffs
+  #fallthrough
+  
+  endcarrycheck:
+  
+  #mWriteString mystr-block2_offset
+  #mWriteString 0x513
+  #mWriteString mystr
+  
+  #ljmp $0x0, $derpy
+  #.byte 0, 0, 0, 0, 0, 0, 0, 0
+  #ljmp $0x00, $0x7e00
+  #ljmp $0x00, $derpy2
+  ljmp $0x00, $code
+  
+#  movw $derpy, %ax
+#  
+#  cmp $0x7e00, %ax
+#  je equal
+#  mWriteString error
+#  jmp after
+#  
+#  equal:
+#  mWriteString succes
+#  
+#  after:
+  /*
+  movb $0x0e, %ah
+  
+  movw $derpy, %cx
+  
+  movb 0x0e, %ah
+  movb $'I', %al
+  int $0x10
+  movb 0x0e, %ah
+  movb $'J', %al
+  int $0x10
+  */
+  
+  #movw $0x7E00, %cx
+  movw $derpy2, %cx
+  
+  movb $0x0e, %ah
+  #movb $'Y', %al
+  movb %ch, %al
+  #movb $'H', %al
+  #movb $0x7E, %al
+  int $0x10
+  
+  movb $0x0e, %ah
+  #movb $'Z', %al
+  movb %cl, %al
+  #add $0x7E, %al
+  #sub $0x50, %al
+  #movb $0x3C, %al
+  int $0x10
+  
+  movb $0x0e, %ah
+  movb $'\n', %al
+  int $0x10
+  
+  movb $0x0e, %ah
+  movb $'\r', %al
+  int $0x10
+  
+  
+  #mWriteString mystr
+  
+  #jmp derpy
+  derpyret:
+  
+  mWriteString end
+  
+  #jmp 0x7008
+  #endend:
+  #mWriteString end
+  
+  cli
+  hlt
+  
+  #
+
+derpy:
+  mWriteString ffs
+  ljmp $0x00, $derpyret
+  #jmp derpyret
+
+.p2align	2	/* force 4-byte alignment */
+gdt:
+  .word	0, 0
+  .byte	0, 0, 0, 0
+  
+  /* code segment */
+  .word	0xFFFF, 0
+  .byte	0, 0x9A, 0xCF, 0
+  
+  /* data segment */
+  .word	0xFFFF, 0
+  .byte	0, 0x92, 0xCF, 0
+  
+  /* 16 bit real mode CS */
+  .word	0xFFFF, 0
+  .byte	0, 0x9E, 0, 0
+  
+  /* 16 bit real mode DS */
+  .word	0xFFFF, 0
+  .byte	0, 0x92, 0, 0
+
+/* this is the GDT descriptor */
+gdtdesc:
+  .word	0x27			/* limit */
+  .long	gdt			/* addr */
+
+#move to 510th byte from the start and append boot signature
+. = _start + 510
+.byte 0x55
+.byte 0xaa
+#block2_offset:
+.byte 'A' #Byte 513
+#mystr: .asciz "asdf\n\r"
+
+#derpderp:
+#  mwriteString 0x7001
+#  jmp endend
+
+derpy2:
+  mWriteString derpy2str
+  ljmp $0x00, $derpyret
+
+code:
+  mWriteString derpy2str
+  movb $0x0e, %ah
+  movb $'C', %al
+  int $0x10
+  movb $0x0e, %ah
+  movb $'\n', %al
+  int $0x10
+  movb $0x0e, %ah
+  movb $'\r', %al
+  int $0x10
+  ljmp $0x00, $derpyret
+
+. = _start + 1021
+.byte 0x00
+
+.word derpy2

legacy/source/sing_boot_alt.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                           #jump to boot code
+      welcome: .asciz "Hello, new World\n\r"  #here we define the string
+      enter_number: .asciz "Enter a number: \n\r"
+      lower_msg: .asciz "\nYour number is to low :( \n\r"   # 26
+      higher_msg: .asciz "\nYour number is to high :( \n\r" # 27
+      winner_msg: .asciz "\nYour are the CAMPION, :D \n\r"  # 26
+
+     .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
+
+.type get_number, @function
+  get_number:
+   
+    # save state before function
+    push %bp
+    mov %sp, %bp
+
+    push %bx
+    push %cx
+    # Start of function
+    mWriteString enter_number
+
+    mov $0, %ah
+    mov $0, %al
+    int $0x16 
+  
+    mov $0x0E, %ah
+    int $0x10
+
+    pop %cx
+    pop %bx
+
+    mov %bp, %sp
+    pop %bp
+    ret
+
+    .type string_to_int, @function
+      string_to_int:
+        /* Converts a string to an integer. Returns the integer in %rax.
+         * %rax: Address of string to convert.
+         */
+        push %bp
+        mov %sp, %bp
+       
+        push %bx
+        push %cx
+       
+        mov %ax, %dx
+
+        cmp $47, %dx
+        jl not_a_num
+        cmp $57, %dx
+        jg not_a_num
+                              # I multiply by 10 to shift the number one placement to the right to add the newest integer.
+        sub $48, %dx 
+        jmp convertdone        # In ascii, numbers start at 0 = 48, 1 = 49, 2 = 50 and so on. So I subtract 48 to get the digit.
+        
+        not_a_num:
+        xor %dx, %dx
+
+        convertdone:
+       
+        pop %cx
+        pop %bx
+       
+        mov %bp, %sp
+        pop %bp
+        ret
+
+
+_boot:
+    mWriteString welcome
+
+  guess:
+    call get_number
+    xor %ah, %ah
+    call string_to_int
+
+    cmp $5, %dx
+
+    jl if_lower
+    je if_eg
+    jg if_higher
+
+  if_lower:
+    mWriteString lower_msg
+    jmp guess
+
+  if_higher: 
+    mWriteString higher_msg
+    jmp guess
+
+  if_eg:
+    mWriteString winner_msg  
+
+     #move to 510th byte from the start and append boot signature
+     . = _start + 510
+     .byte 0x55
+     .byte 0xaa  

legacy/source/sing_boot_guess.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:
+  welcome: .asciz "Welcome to this very fine Guessing game \n\r"  #here we define the string
+  enter_number: .asciz "Enter a number: \n"
+  lower_msg: .asciz "Your number is to low :( \n"   # 26
+  higher_msg: .asciz "Your number is to high :( \n" # 27
+  winner_msg: .asciz "Your are the CAMPION, :D \n"  # 26
+   .macro mWriteString str              #macro which calls a function to print a string
+      leaw  \str, %si
+      call .writeStringIn
+  .endm
+    #jmp _boot  
+    
+    # function to print the string
+   .writeStringIn:
+        lodsb
+        orb  %al, %al
+        jz   .writeStringOut
+        movb $0x0e, %ah
+        int  $0x10
+        jmp  .writeStringIn
+   .writeStringOut:
+   ret                         #jump to boot code
+    
+    mWriteString welcome
+
+/*
+guess:
+    call get_number
+    xor %ah, %ah
+    call string_to_int
+
+    cmp $5, %dx
+
+    jl if_lower # rax less then 50
+    je if_eg
+    jg if_higher
+  if_lower:
+    mWriteString lower_msg
+    jmp guess
+
+  if_higher: 
+    mWriteString higher_msg
+    jmp guess
+
+  if_eg:
+    mWriteString winner_msg                            #message length
+
+    hlt
+*/
+#_boot:
+#    mWriteString welcome
+
+
+
+#.type string_to_int, @function
+#string_to_int:
+  /* Converts a string to an integer. Returns the integer in %rax.
+   * %rax: Address of string to convert.
+   */
+ /*
+  push %bp
+  mov %sp, %bp
+ 
+  push %bx
+  push %cx
+ 
+  mov %ax, %dx
+ 
+  xor %ax, %ax
+
+  cmp $47, %dx
+  jl not_a_num
+  cmp $57, %dx
+  jg not_a_num
+                        # I multiply by 10 to shift the number one placement to the right to add the newest integer.
+  sub $48, %dx         # In ascii, numbers start at 0 = 48, 1 = 49, 2 = 50 and so on. So I subtract 48 to get the digit.
+  
+  not_a_num:
+  xor %dx, %dx
+
+  convertdone:
+ 
+  pop %cx
+  pop %bx
+ 
+  mov %bp, %sp
+  pop %bp
+  ret
+
+.type get_number, @function
+  get_number:
+  #    .enter_char:
+  #        mov $0, %ah
+  #        mov $0, %al
+  #        int $0x16 
+    
+  #        mov $0x0E, %ah
+  #        int $0x10
+
+  #        jmp .enter_char
+   
+    # save state before function
+    push %bp
+    mov %sp, %bp
+
+    push %bx
+    push %cx
+    # Start of function
+    mWriteString enter_number
+
+    mov $0, %ah
+    mov $0, %al
+    int $0x16 
+  
+    mov $0x0E, %ah
+    int $0x10
+
+    pop %cx
+    pop %bx
+
+    mov %bp, %sp
+    pop %bp
+    ret
+*/
+     #move to 510th byte from the start and append boot signature
+     . = _start + 510
+     .byte 0x55
+     .byte 0xaa