boot sector uses LBA to load 2nd stage
"make clean" removes .map files
Simple trap for int 3
Rudimentary traps for int 13 (GP) and int 8 (double fault)
#GP trap prints registers
Handle DF and BP faults
Renamed pgm module to stage2
Move stack to 0x1000
Move stage2 to 0x2000
Get BIOS memory map
Renamed memmap module to bios_memmap
sprintf: %b (binary) format
Physical memory map
Conversion functions take buflen to prevent buffer overflows
Rename stage2 -> loader
Memory map constants, comments, etc.
Added GDB howto
Separate kernel from loader
Enable page mapping and load kernel into high memory
Set high offset of IDT entry correctly