DOS ain't dead

bootstrap16 - real mode (CPU 8086) FAT12/16/32 bootloader (Announce)

posted by mikegonta, 20.05.2013, 13:34
(edited by mikegonta on 20.05.2013, 14:01)

Original code by Mike Gonta, Public Domain 2013

http://mikegonta.com/bootstrap16.zip

2013-05-19.19.00
* corrected longjmp routine
2013-05-19
* new vesion of setjmp/longjmp
-- uses carry flag (assembly language style)
-- saves/restores _ALL_ registers except ax (longjmp return value)
-- each setjmp/longjmp pair can have its own saved state buffer
* added qemu.bat script to emulate bootstrap16.img
-- unzip bootstrap16.zip to your qemu folder, open the bootstrap16 folder and double click qemu.bat
-- works with qemu 32 bit and qemu 64 bit
2013-05-18
* changed formatting defines* added _QUICK_FORMAT define
2013-05-17 (initial release)
* 16 bit real mode Intel syntax assembly language
* CPU 8086
* four formats supported
-- FAT12 1.44Mb floppy disk / flash drive
-- FAT12 hard drive / flash drive
-- FAT16 hard drive / flash drive
-- FAT32 hard drive / flash drive
* handles 1K, 2K, and 4K sector sizes _UNTESTED_
* same code (boot16.inc) for NASM and FASM
* NASM (boot16.nsm) and FASM (boot16.fsm) headers
* same binary with NASM (-O1) and FASM
* same binary code for FAT12/16/32 only the BPB is different
-- loads a plain english "8.3" ("kernel.bin") flat binary file from the root directory to 0x1000:0
* includes FAT32 image

---
Mike Gonta
look and see - many look but few see

SudoBIOS - a completely transparent 32 bit protected mode BIOS extender - say goodbye to real mode code.

Complete thread:

• bootstrap16 - real mode FAT12/16/32 bootloader - mikegonta, 19.05.2013, 01:10 (Announce)
  • bootstrap16 - real mode (CPU 8086) FAT12/16/32 bootloader - mikegonta, 20.05.2013, 13:34
    • bootstrap16 - real mode (CPU 8086) FAT12/16/32 bootloader - mikegonta, 20.05.2013, 13:59