Category : Utilities for DOS and Windows Machines
Archive   : BOOT.ZIP
Filename : BOOT.ASM

Output of file : BOOT.ASM contained in archive : BOOT.ZIP
; Boot record program (C) Copyright Peter Norton 1986

boots segment 'code'

public boot

assume cs:boots

boot proc far

; 30-byte DOS info -- set up for 1-side, 8-sector
; change as needed for any other format


jmp begin ; EB 2A 90 as per normal
db ' Norton ' ; 8-byte system id
dw 512 ; sector size in bytes
db 1 ; sectors per cluster
dw 1 ; reserved clusters
db 2 ; numbers of fats
dw 64 ; root directory entries
dw 320 ; total sectors
db 0FEh ; format id
dw 1 ; sectors per fat
dw 8 ; sectors per track
dw 1 ; sides
dw 0 ; special hidden sectors

; mysterious but apparently standard 14-byte filler
db 14 dup (0)

; carry on with the boot work

mov ax,07c0h ; boot record location
push ax
pop ds
mov bx,message_offset ; put offset to message into si
mov cx,message_length ; message length into cx
mov ax,14 ; write teletype
mov al,[bx]
push ds
push cx
push bx
int 10h
pop bx
pop cx
pop ds
inc bx
loop continue

mov ah,0 ; read next keyboard character
int 16h

mov ah,15 ; get video mode
int 10h
mov ah,0 ; set video mode (clears screen)
int 10h

int 19h ; re-boot

db 0Dh,0Ah ; return carriage, line feed
db 0Dh,0Ah
db 0Dh,0Ah
db 0Dh,0Ah
db ' Start your computer with'
db 0Dh,0Ah
db ' a DOS system diskette.'
db 0Dh,0Ah
db 0Dh,0Ah
db 0Dh,0Ah
db ' This is'
db 0Dh,0Ah
db ' The Norton Utilities'
db 0Dh,0Ah
db ' Version 3.10 '
db 0Dh,0Ah
db 0Dh,0Ah
db ' from'
db 0Dh,0Ah
db ' Peter Norton'
db 0Dh,0Ah
db ' 2210 Wilshire Blvd'
db 0Dh,0Ah
db ' Santa Monica, CA 90403'
db 0Dh,0Ah
db 0Dh,0Ah
db ' (213) 826-8032'
db 0Dh,0Ah
db 0Dh,0Ah
db 0Dh,0Ah
db 0Dh,0Ah
db ' Insert a DOS diskette'
db 0Dh,0Ah
db ' press any key to start DOS ... '

; I put a copyright notice here; you do if you want to

message_offset equ beg_message - head
message_length equ end_message - beg_message
filler_amount equ 512 - (tail - head) - 2

db filler_amount dup (0) ; filler

db 055h,0AAh ; boot id

boot endp

boots ends


  3 Responses to “Category : Utilities for DOS and Windows Machines
Archive   : BOOT.ZIP
Filename : BOOT.ASM

  1. Very nice! Thank you for this wonderful archive. I wonder why I found it only now. Long live the BBS file archives!

  2. This is so awesome! 😀 I’d be cool if you could download an entire archive of this at once, though.

  3. But one thing that puzzles me is the “mtswslnkmcjklsdlsbdmMICROSOFT” string. There is an article about it here. It is definitely worth a read: