42 lines
488 B
ArmAsm
42 lines
488 B
ArmAsm
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; assemble this and concatenate sp2.com with it to make it bootable!
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[org 0x7C00]
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[bits 16]
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NUMSEG equ (1993/512)+1 ; filesize is 1993 bytes
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mov ax, 0x100
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mov ss, ax
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mov ds, ax
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mov es, ax
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mov gs, ax
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mov fs, ax
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mov bp, 0xF000
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mov sp, bp
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mov bx, 0x100
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mov al, NUMSEG
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inc ah
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mov cl, ah
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xor ch, ch
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xor dh, dh
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int 13h
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xor cx, cx
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mov ds, cx
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mov word [ds:0x21*4], int21
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mov word [ds:0x21*4+2], 0
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inc ch
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mov ds, cx
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push 0x100
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push 0x100
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retf
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int21:
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hlt
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times 510 - ($-$$) db 0
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dw 0xAA55
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