== Instruction ==

Build with
 nasm -f bin mbr.asm -o mbr

Run with
 qemu-system-x86_64 -boot a -fda  mbr

== Bios Memory ==

0x0     -   0x03FF      ;IVT
0x400   -   0x4FF       ;BIOS Data
0x500   -   0x7BFF      ;Unused
0x7C00  -   0x7D77      ;Bootloader
0x7E00  -   0x9FFFF     ;Unused
0xA0000 -   0xBFFFF     ;Video memory
0xB0000 -   0xB7777     ;Video memory monochrome
0xB8000 -   0xBFFFF     ;Video memory color
0xC0000 -   0xC7FFF     ;BIOS ROM
0x80000 -   0xEFFFF     ;BIOS shadow memory
0xF0000 -   0xFFFFF     ;BIOS System


== Interrupt Vector Table ==
INT_NUM     |   Short Description PM
----------- | ----------------------
0x00        |  Division by zero
0x01        |  Debugger
0x02        |  NMI
0x03        |  Breakpoint
0x04        |  Overflow
0x05        |  Bounds
0x06        |  Invalid Opcode
0x07        |  Coprocessor not available
0x08        |  Double fault
0x09        |  Coprocessor Segment Overrun (386 or earlier only)
0x0A        |  Invalid Task State Segment
0x0B        |  Segment not present
0x0C        |  Stack Fault
0x0D        |  General protection fault
0x0E        |  Page fault
0x0F        |  reserved
0x10        |  Math Fault
0x11        |  Alignment Check
0x12        |  Machine Check
0x13        |  SIMD Floating-Point Exception
0x14        |  Virtualization Exception
0x15        |  Control Protection Exception

== BIOS IRQ ==
https://en.wikipedia.org/wiki/BIOS_interrupt_call