2011-10-14 23:38:50 +02:00
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; ;;
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2012-03-13 17:51:57 +01:00
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;; Copyright (C) KolibriOS team 2008-2011. All rights reserved. ;;
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2011-10-14 23:38:50 +02:00
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;; Distributed under terms of the GNU General Public License ;;
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;; ;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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; Detect all BIOS hard drives.
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; diamond, 2008
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xor cx, cx
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mov es, cx
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mov di, 0x9080
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mov byte [es:di-1], cl
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cmp [preboot_biosdisk], 1
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jnz bdde
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mov dl, 80h
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bdds:
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mov ah, 15h
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push cx dx di
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int 13h
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pop di dx cx
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jc bddc
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test ah, ah
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jz bddc
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inc cx
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mov ah, 48h
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push ds
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push es
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pop ds
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mov si, 0xA000
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mov word [si], 1Eh
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mov ah, 48h
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int 13h
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pop ds
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jc bddc2
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inc byte [es:0x907F]
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cmp word [es:si], 1Eh
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jb bddl
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cmp word [es:si+1Ah], 0xFFFF
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jz bddl
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mov al, dl
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stosb
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push ds
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lds si, [es:si+1Ah]
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mov al, [si+6]
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and al, 0xF
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stosb
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mov al, byte [si+4]
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shr al, 4
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and ax, 1
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cmp word [si], 1F0h
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jz @f
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inc ax
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inc ax
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cmp word [si], 170h
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jz @f
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or ax, -1
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; mov ax, -1
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@@:
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stosw
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pop ds
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jmp bddc2
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bddl:
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mov al, dl
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stosb
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xor ax, ax
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stosb
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dec ax
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stosw
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; mov al, 0
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; stosb
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; mov ax, -1
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; stosw
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bddc2:
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cmp cl, [es:0x475]
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jae bdde
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bddc:
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inc dl
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jnz bdds
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bdde:
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