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Ciro Santilli bdcdf02aee Use a common.o file to factor out globals vor 9 Jahren
grub d4aae6183b Failed attempt at modifying a segment descriptor, split GDB to separate file vor 9 Jahren
hajji 48614b45fa Document hajji working vor 9 Jahren
intel-startup bd0424f001 Failed smp attempt started vor 9 Jahren
multiboot d4aae6183b Failed attempt at modifying a segment descriptor, split GDB to separate file vor 9 Jahren
nasm 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
no-linker-script a8d90ac777 Make osdev example more uniform with the hello world vor 9 Jahren
printf a8d90ac777 Make osdev example more uniform with the hello world vor 9 Jahren
uefi 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
.gitignore b9b4da0d1e initial_state.S stopped working... vor 9 Jahren
Makefile bdcdf02aee Use a common.o file to factor out globals vor 9 Jahren
README.md 881300bd22 Simple protected mode PIT works vor 9 Jahren
TODO.md 1e87cda4c0 PIT protected handles interrupts more correctly vor 9 Jahren
about.md 9a24f92f36 Fix BEGIN 0x to %ax vor 9 Jahren
apm.md a44b659299 bios keyboard vor 9 Jahren
apm_shutdown.S 61f0ad8dda Remove END vor 9 Jahren
apm_shutdown2.S 61f0ad8dda Remove END vor 9 Jahren
bibliography.md bd0424f001 Failed smp attempt started vor 9 Jahren
bios.md b16e42ffe3 SMP works on qemu 2.3.0 but no delays yet, so likely to fail on real hardware vor 9 Jahren
bios_background.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
bios_carriage_return.S b16e42ffe3 SMP works on qemu 2.3.0 but no delays yet, so likely to fail on real hardware vor 9 Jahren
bios_clear_screen.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
bios_color.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
bios_cursor_position.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
bios_detect_memory.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
bios_disk_load.S 24988411ad Make page setup into a function vor 9 Jahren
bios_disk_load2.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
bios_hello_world.S 61f0ad8dda Remove END vor 9 Jahren
bios_keyboard.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
bios_keyboard_loop.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
bios_newline.S b16e42ffe3 SMP works on qemu 2.3.0 but no delays yet, so likely to fail on real hardware vor 9 Jahren
bios_pixel.S 61f0ad8dda Remove END vor 9 Jahren
bios_pixel_line.S 61f0ad8dda Remove END vor 9 Jahren
bios_putc.S bd0424f001 Failed smp attempt started vor 9 Jahren
bios_scroll.S b16e42ffe3 SMP works on qemu 2.3.0 but no delays yet, so likely to fail on real hardware vor 9 Jahren
bios_tick_count.S d1f11492c2 DRY out PIT and make one that fires only once, get nsectors from linker script vor 9 Jahren
common.S bdcdf02aee Use a common.o file to factor out globals vor 9 Jahren
common.h bdcdf02aee Use a common.o file to factor out globals vor 9 Jahren
cs.S aaaea79a6f Refactor print_hex vor 9 Jahren
debug.md 9e58c1dc65 idt vor 9 Jahren
formats.md d217b180be Split up README vor 9 Jahren
gdb.gdb b16e42ffe3 SMP works on qemu 2.3.0 but no delays yet, so likely to fail on real hardware vor 9 Jahren
getting-started.md 24988411ad Make page setup into a function vor 9 Jahren
idt.S bd0424f001 Failed smp attempt started vor 9 Jahren
idt1.S 1f6af90212 Page fault handler works! vor 9 Jahren
idt_zero_divide.S 1f6af90212 Page fault handler works! vor 9 Jahren
in.md bd0424f001 Failed smp attempt started vor 9 Jahren
in_beep.S 61f0ad8dda Remove END vor 9 Jahren
in_beep_illinois.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
in_keyboard.S bd0424f001 Failed smp attempt started vor 9 Jahren
in_mouse.S 61f0ad8dda Remove END vor 9 Jahren
infinite_loop.S 61f0ad8dda Remove END vor 9 Jahren
initial_state.S b16e42ffe3 SMP works on qemu 2.3.0 but no delays yet, so likely to fail on real hardware vor 9 Jahren
interrupt.S 1f6af90212 Page fault handler works! vor 9 Jahren
interrupt1.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
interrupt_keyboard.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
interrupt_loop.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
interrupt_zero_divide.S 9e58c1dc65 idt vor 9 Jahren
io.md a44b659299 bios keyboard vor 9 Jahren
lidt.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
linker.ld bdcdf02aee Use a common.o file to factor out globals vor 9 Jahren
mbr.md 25235ad9ba Keyboard input, hex printer vor 9 Jahren
min.S 61f0ad8dda Remove END vor 9 Jahren
modes-of-operation.md b16e42ffe3 SMP works on qemu 2.3.0 but no delays yet, so likely to fail on real hardware vor 9 Jahren
not-testable-in-userland.md 01a5e64efa Segment registers vor 9 Jahren
page_fault.S 1e87cda4c0 PIT protected handles interrupts more correctly vor 9 Jahren
paging.S 1f6af90212 Page fault handler works! vor 9 Jahren
pic.md bd0424f001 Failed smp attempt started vor 9 Jahren
pit.S 9a33f2a5c7 pit sleep works vor 9 Jahren
pit_once.S d1f11492c2 DRY out PIT and make one that fires only once, get nsectors from linker script vor 9 Jahren
pit_protected.S 9a33f2a5c7 pit sleep works vor 9 Jahren
protected_mode.S 2b83197f39 Paging works!!! vor 9 Jahren
reboot.S 61f0ad8dda Remove END vor 9 Jahren
rtc.S 881300bd22 Simple protected mode PIT works vor 9 Jahren
segment_base.S 2b83197f39 Paging works!!! vor 9 Jahren
segment_registers.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
segmentation.md d4aae6183b Failed attempt at modifying a segment descriptor, split GDB to separate file vor 9 Jahren
smp.S d1f11492c2 DRY out PIT and make one that fires only once, get nsectors from linker script vor 9 Jahren
smp.md d1f11492c2 DRY out PIT and make one that fires only once, get nsectors from linker script vor 9 Jahren
ss.S aaaea79a6f Refactor print_hex vor 9 Jahren
template.S 71e104bab0 Uniformized macros: push save all registers, and use only GAS macros, no CPP vor 9 Jahren
test_pit_sleep.S bdcdf02aee Use a common.o file to factor out globals vor 9 Jahren
test_print_bytes.S 1f6af90212 Page fault handler works! vor 9 Jahren
test_vga_print_bytes.S 1f6af90212 Page fault handler works! vor 9 Jahren

README.md

x86 Bare Metal Examples

Minimal operating systems to learn low level programming.

  1. Getting started
  2. About
  3. Examples
    1. printf
    2. min
    3. No ld script
    4. BIOS
      1. putc
      2. hello world
        1. NASM
      3. newline
      4. carriage return
      5. cursor position
      6. color
      7. background
      8. scroll
        1. clear screen
      9. pixel
        1. pixel line
      10. keyboard
        1. keyboard loop
      11. disk load
        1. disk load 2
      12. detect memory
      13. tick count
    5. Initial state
    6. reboot
    7. Not testable in userland
      1. Segment registers
        1. SS
        2. CS
      2. Interrupt
        1. int $1
        2. Interrupt zero divide
        3. Interrupt loop
      3. in
        1. in keyboard
        2. RTC
        3. PIT
          1. PIT once
        4. in beep
        5. in beep_illinois
        6. in mouse (TODO)
      4. Protected mode
        1. Segment base (TODO)
        2. IDT
          1. IDT 1
          2. IDT zero divide
          3. IDT PIT
        3. PIT protected
        4. Segmentation fault handler: memory bound, ring, RWX violations
        5. Paging
          1. Page fault
    8. APM
      1. APM shutdown
      2. APM shutdown 2
    9. SMP TODO
      1. source
      2. information
    10. Multiboot
    11. GRUB
    12. TODO not working
      1. UEFI
    13. Misc
      1. hajji
  4. Tests
    1. PRINT_BYTES
  5. Theory
    1. Modes of operation
      1. Segmentation
    2. Formats
      1. MBR
    3. IO
      1. BIOS
      2. APM
    4. PIC
    5. Debug
    6. Bibliography
  6. TODO