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;; This thing is licensed under Creative Commons Zero v1.0 Universal, which essentially means
;; "Public Domain". (You can do anything you want without asking for permission).
;;
;; SPDX-License-Identifier: CC0-1.0
;;
;; To compile
;; $ nasm -f bin -o boot.bin boot.asm
;;
;; To run
;; $ qemu-system-i386 -fda boot.bin
;;
;; You can also run this by burning it to a floppy or a hard drive but I am not to be held
;; responsible for any lost partitions, filesystems, or bootloaders.
BITS 16
mov ax, 0xB800
mov es, ax
xor di, di
mov ax, 0xBB20
mov cx, 80*5
rep stosw
mov ah, 0xDD
mov cx, 80*5
rep stosw
mov ah, 0xFF
mov cx, 80*5
rep stosw
mov ah, 0xDD
mov cx, 80*5
rep stosw
mov ah, 0xBB
mov cx, 80*5
rep stosw
halt:
cli
hlt
jmp halt
; There's still ~463 bytes free here
times 510-($-$$) db 0
dw 0xAA55
|
