181 lines
5.1 KiB
Plaintext
181 lines
5.1 KiB
Plaintext
## Copyright (C) 2016 Jeremiah Orians
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## This file is part of stage0.
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##
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## stage0 is free software: you an redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation, either version 3 of the License, or
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## (at your option) any later version.
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##
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## stage0 is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with stage0. If not, see <http://www.gnu.org/licenses/>.
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# start:
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# Wait for user input before running
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B400 # mov ah,0x0
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CD16 # int 0x16
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# Clear the screen to be nice
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# Clearing the screen
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B000 # mov al,0x0
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B406 # mov ah,0x6
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B707 # mov bh,0x7
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B100 # mov cl,0x0
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B500 # mov ch,0x0
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B250 # mov dl,0x50
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B618 # mov dh,0x18
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CD10 # int 0x10
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# Reseting the cursor
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B402 # mov ah,0x2
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B700 # mov bh,0x0
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B600 # mov dh,0x0
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B200 # mov dl,0x0
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CD10 # int 0x10
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# read_floppy:
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B080 # mov al,0x80
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B402 # mov ah,0x2
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B500 # mov ch,0x0
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B101 # mov cl,0x1
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B600 # mov dh,0x0
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B200 # mov dl,0x0
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BB0010 # mov bx,0x1000
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8EC3 # mov es,bx
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BB0000 # mov bx,0x0
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CD13 # int 0x13
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72E8 # jc read_floppy
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# Zero all registers and segments before jump
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B80000 # mov ax,0x0
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BB0000 # mov bx,0x0
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B90000 # mov cx,0x0
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BA0000 # mov dx,0x0
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BE0000 # mov si,0x0
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BF0000 # mov di,0x0
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BD0000 # mov bp,0x0
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8ED8 # mov ds,ax
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8ED0 # mov ss,ax
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8EC0 # mov es,ax
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8EE0 # mov fs,ax
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8EE8 # mov gs,ax
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# Load where we need to jump to execute the loaded code
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680010 # push word 0x1000
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6A00 # push byte +0x0
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# Use intersegment return to jump to the code loaded from floppy A:
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CF # iretw
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# done:
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F4 # hlt
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 90 90 # 4 nops
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90 90 # 2 nops
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55AA # Magic Number
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