Live machine

Run LainDOS

A real x86 emulator (v86v86A browser-hosted x86 emulator used by the site to boot the small LainDOS demo image.) boots the LainDOS floppy right here in the browser — the same boot you just read about. Click the screen and type to use it. Flip to the Serial · COM1 tab to watch LainDOS narrate the very boot the walkthrough describes.

v86 · i386 · FAT12 floppy · shell_monkey.img○ halted
floppy ready · shell + Monkey Island demo
⤓ Download .imgclick screen to type · Screen = VGA · Serial = COM1 log

Disk image

shell_monkey.imgFAT12 · 1.44M
KERNEL.SYS · SHELL.COM
MIDEMO.EXE · MONKEY demo

Things to try

Boot the demo
The image boots to SHELL.COM; type midemo at the prompt to start the Monkey Island demo.
Watch the serial log
LainDOS narrates boot + INT 21hINT 21hThe main DOS API interrupt. Programs select services such as open, read, EXEC, and exit with AH. calls over COM1COM1The first PC serial port. LainDOS uses it as the primary machine-readable debug log. — flip to the Serial tab to read the boot you just walked through, live.
Use the shell
Once the demo exits, you land in SHELL.COM — try DIR, CD, SET, or MEM.