我最近一直试图在大会上制作一个操作系统,但是我遇到了一些问题。我可以在VirtualBox中运行我的操作系统但它只是告诉我一旦我尝试从软盘驱动器运行它就从软盘驱动器中删除媒体。我在多台计算机上试过但是他们都这么说。我不知道还有什么可以尝试,我会把我的源代码放在下面,以防它帮助你。 提前致谢, Jake Zachariah Nixon。
BITS 16
jmp short start ;jump to start of os, past disk description
nop ;pad out before description
OEMLabel db "FIRSTBOOT" ; Disk label
BytesPerSector dw 512 ; Bytes per sector
SectorsPerCluster db 1 ; Sectors per cluster
ReservedForBoot dw 1 ; Reserved sectors for boot record
NumberOfFats db 2 ; Number of copies of the FAT
RootDirEntries dw 224 ; Number of entries in root dir
LogicalSectors dw 2880 ; Number of logical sectors
MediumByte db 0F0h ; Medium descriptor byte
SectorsPerFat dw 9 ; Sectors per FAT
SectorsPerTrack dw 18 ; Sectors per track (36/cylinder)
Sides dw 2 ; Number of sides/heads
HiddenSectors dd 0 ; Number of hidden sectors
LargeSectors dd 0 ; Number of LBA sectors
DriveNo dw 0 ; Drive No: 0
Signature db 41 ; Drive signature: 41 for floppy
VolumeID dd 00000000h ; Volume ID: any number
VolumeLabel db "FIRSTOS "; Volume Label: any 11 chars
FileSystem db "FAT12 " ; File system type: don't change!
start:
mov ax, 07C0h ;4k stack space after bootloader
add ax, 288 ;4096 + 512 devided by 16 bytes per paragraph
mov ss, ax
mov sp, 4096
mov ax, 07C0h ;set data segment to where we are loaded
mov ds, ax
mov si, text_string ;put string position in SI
call print_string ;calls print string routine
jmp $ ;Jumps here to make infinate loop
text_string db 'This is my awesome OS called FirstOS! I am currently building it from the ground up!', 0
print_string: ;routine to outpu string in SI to screen
mov ah, 0Eh ;int 10h 'print char' function
.repeat:
lodsb ;get char from string
cmp al, 0
je .done ;if char = 0 then jump to .done
int 10h ;else print char
jmp .repeat ;then repeat process
.done:
ret ;return to other code
times 510-($-$$) db 0 ;pad remainder of boot sector with 0s
dw 0AA55h ;The standard pc boot signature
再次感谢:)
答案 0 :(得分:2)
它正在运作!我发现问题只是我没有正确地将图像写入软盘!谢谢你的帮助。如果其他人遇到同样的问题,我找到的最好的软件称为rawwrite。它非常易于使用且非常快速。 再次感谢, Jake Zachariah Nixon。
答案 1 :(得分:1)
很难确切地说出问题所在,但这里有两件事你可以尝试。