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Rev 129 Rev 134
Line 150... Line 150...
150 
    stosd
 150 
    stosd
151 
    add    eax, 1000h
 151 
    add    eax, 1000h
152 
    loop    @b
 152 
    loop    @b
153 
    ret
 153 
    ret
Line -... Line 154...
- 
 
 154 
 
- 
 
 155 
boot_read_floppy:
- 
 
 156 
        push    si
- 
 
 157 
        xor     si, si
- 
 
 158 
        mov     ah, 2   ; read
- 
 
 159 
@@:
- 
 
 160 
        push    ax
- 
 
 161 
        int     0x13
- 
 
 162 
        pop     ax
- 
 
 163 
        jnc     @f
- 
 
 164 
        inc     si
- 
 
 165 
        cmp     si, 10
- 
 
 166 
        jb      @b
- 
 
 167 
        mov     si, badsect-0x10000
- 
 
 168 
sayerr_plain:
- 
 
 169 
        call    printplain
- 
 
 170 
        jmp     $
- 
 
 171 
@@:
- 
 
 172 
        pop     si
- 
 
 173 
        ret
154 
 
 174 
 
Line 155... Line 175...
155 
		org $+0x10000
 175 
		org $+0x10000
156 
 
 176 
 
157 
; table for move to extended memory (int 15h, ah=87h)
 177 
; table for move to extended memory (int 15h, ah=87h)
Line 822... Line 842...
822 
        mov     si,diskload-0x10000
 842 
        mov     si,diskload-0x10000
823 
        call    print
 843 
        call    print
824 
        xor    ax, ax            ; reset drive
 844 
        xor    ax, ax            ; reset drive
825 
        xor    dx, dx
 845 
        xor    dx, dx
826 
        int     0x13
 846 
        int     0x13
- 
 
 847 
; now load floppy image to memory
- 
 
 848 
; at first load boot sector and first FAT table
827 
        mov     cx,0x0001               ; startcyl,startsector
 849 
        mov     cx, 0x0001      ; startcyl,startsector
828 
        xor    dx, dx            ; starthead,drive
 850 
        xor     dx, dx          ; starthead,drive
829 
        push    word 80*2               ; read no of sect
 851 
        mov     al, 1+9         ; no of sectors to read
830 
       reads:
 - 
 
831 
        pusha
 - 
 
832 
        xor     si,si
 - 
 
833 
       newread:
 - 
 
834 
        mov     bx,0xa000               ; es:bx -> data area
 852 
        mov     bx, 0xB000      ; es:bx -> data area
835 
        mov     ax,0x0200+18            ; read, no of sectors to read
 - 
 
836 
        int     0x13
 - 
 
837 
        test    ah, ah
 - 
 
838 
        jz      goodread
 853 
        call    boot_read_floppy
839 
        inc    si
 - 
 
840 
        cmp     si,10
 - 
 
841 
        jnz     newread
 - 
 
842 
        mov     si,badsect-0x10000
 854 
; and copy them to extended memory
843 
sayerr_plain:
 - 
 
844 
        call    printplain
 - 
 
845 
        jmp     $
 - 
 
846 
       goodread:
 - 
 
847 
        ; move -> 1mb
 - 
 
848 
        mov     si,movedesc-0x10000
 855 
        mov     si, movedesc-0x10000
- 
 
 856 
        mov     [si+8*2+3], bh
849 
        push    es
 857 
        push    es
850 
        push    ds
 858 
        push    ds
851 
        pop     es
 859 
        pop     es
852 
        mov     cx,256*18
 860 
        mov     cx, 256*10
853 
        mov     ah,0x87
 861 
        mov     ah, 0x87
854 
        int     0x15
 862 
        int     0x15
855 
        pop    es
 863 
        test    ah, ah
856 
 
 - 
 
857 
        test    ah,ah                  ; was the move successfull ?
 - 
 
858 
        je      goodmove
 864 
        jz      @f
- 
 
 865 
sayerr_floppy:
859 
        mov     dx,0x3f2              ; floppy motor off
 866 
        mov     dx, 0x3f2
860 
        mov     al,0
 867 
        mov     al, 0
861 
        out     dx,al
 868 
        out     dx, al
862 
        mov     si,memmovefailed-0x10000
 869 
        mov     si, memmovefailed-0x10000
863 
        jmp    sayerr_plain
 870 
        jmp     sayerr_plain
- 
 
 871 
@@:
- 
 
 872 
        add     dword [si+8*3+2], 512*10
- 
 
 873 
; copy FAT to second copy
- 
 
 874 
        mov     byte [si+8*2+3], 0xB2
- 
 
 875 
        mov     cx, 256*9
- 
 
 876 
        mov     ah, 0x87
- 
 
 877 
        int     0x15
864 
      goodmove:
 878 
        pop     es
- 
 
 879 
        test    ah, ah
- 
 
 880 
        jnz     sayerr_floppy
- 
 
 881 
        add     dword [si+8*3+2], 512*9
- 
 
 882 
; calculate total number of sectors to read
- 
 
 883 
        mov     ax, 1+9+14      ; boot+FAT+root
- 
 
 884 
        mov     di, 0xB203
- 
 
 885 
.calc_loop:
- 
 
 886 
        test    word [es:di], 0xFFF
- 
 
 887 
        jz      @f
- 
 
 888 
        inc     ax
- 
 
 889 
@@:
- 
 
 890 
        test    word [es:di+1], 0xFFF0
- 
 
 891 
        jz      @f
- 
 
 892 
        inc     ax
865 
 
 893 
@@:
- 
 
 894 
        add     di, 3
- 
 
 895 
        cmp     di, 0xB200+1440*3
- 
 
 896 
        jb      .calc_loop
- 
 
 897 
        push    ax
- 
 
 898 
        mov     bp, 1+9         ; already read sectors
- 
 
 899 
; now read rest
- 
 
 900 
        mov     byte [si+8*2+3], 0xA0
- 
 
 901 
        mov     di, 2-14        ; absolute sector-31
- 
 
 902 
        mov     cx, 0x0002      ; cylinder=0, sector=2
- 
 
 903 
        mov     dx, 0x0100      ; head=1, disk=0
- 
 
 904 
.read_loop:
- 
 
 905 
; determine whether sector must be read
- 
 
 906 
        cmp     di, 2
- 
 
 907 
        jl      .read
- 
 
 908 
        mov     bx, di
- 
 
 909 
        shr     bx, 1
- 
 
 910 
        jnc     .even
866 
    add    dword [movedesc-0x10000+0x18+2], 512*18
 911 
        test    word [es:bx+di+0xB200], 0xFFF0
- 
 
 912 
        jmp     @f
- 
 
 913 
.even:
- 
 
 914 
        test    word [es:bx+di+0xB200], 0xFFF
- 
 
 915 
@@:
- 
 
 916 
        jz      .skip
- 
 
 917 
.read:
- 
 
 918 
        mov     bx, 0xA000
- 
 
 919 
        mov     al, 1           ; 1 sector
- 
 
 920 
        call    boot_read_floppy
- 
 
 921 
        inc     bp
- 
 
 922 
        push    es
- 
 
 923 
        push    ds
- 
 
 924 
        pop     es
- 
 
 925 
        pusha
- 
 
 926 
        mov     cx, 256
- 
 
 927 
        mov     ah, 0x87
- 
 
 928 
        int     0x15
- 
 
 929 
        test    ah, ah
867 
        popa
 930 
        popa
- 
 
 931 
        pop     es
- 
 
 932 
        jnz     sayerr_floppy
- 
 
 933 
.skip:
- 
 
 934 
        add     dword [si+8*3+2], 512
- 
 
 935 
        inc     cx
- 
 
 936 
        cmp     cl, 19
- 
 
 937 
        jnz     @f
- 
 
 938 
        mov     cl, 1
868 
        inc     dh
 939 
        inc     dh
869 
        cmp     dh,2
 940 
        cmp     dh, 2
870 
        jnz     bb2
 941 
        jnz     @f
871 
        mov     dh,0
 942 
        mov     dh, 0
872 
        inc     ch
 943 
        inc     ch
873 
        pusha                        ; print prosentage
 - 
 
874 
        mov     si,pros-0x10000
 - 
 
875 
    shr    ch, 2
 - 
 
876 
    mov    al, '5'
 - 
 
877 
    test    ch, 1
 - 
 
878 
    jnz    @f
 - 
 
879 
    mov    al, '0'
 - 
 
880 
@@:
 944 
@@:
881 
    mov    [si+1], al
 - 
 
882 
    shr    ch, 1
 - 
 
883 
    add    ch, '0'
 - 
 
884 
    mov    [si], ch
 - 
 
885 
        call    printplain
 - 
 
886 
        popa
 - 
 
887 
       bb2:
 - 
 
888 
        pop     ax
 945 
        pop     ax
889 
        dec     ax
 - 
 
890 
        push    ax
 946 
        push    ax
- 
 
 947 
        pusha
- 
 
 948 
; draw percentage
- 
 
 949 
; total sectors: ax
- 
 
 950 
; read sectors: bp
- 
 
 951 
        xchg    ax, bp
- 
 
 952 
        mov     cx, 100
- 
 
 953 
        mul     cx
- 
 
 954 
        div     bp
- 
 
 955 
        aam
- 
 
 956 
        xchg    al, ah
- 
 
 957 
        add     ax, '00'
- 
 
 958 
        mov     si, pros-0x10000
- 
 
 959 
        cmp     [si], ax
- 
 
 960 
        jz      @f
- 
 
 961 
        mov     [si], ax
- 
 
 962 
        call    printplain
- 
 
 963 
@@:
- 
 
 964 
        popa
- 
 
 965 
        inc     di
- 
 
 966 
        cmp     di, 2880-31
- 
 
 967 
        jnz     .read_loop
- 
 
 968 
 
- 
 
 969 
;        mov     cx,0x0001               ; startcyl,startsector
- 
 
 970 
;        xor    dx, dx            ; starthead,drive
- 
 
 971 
;        push    word 80*2               ; read no of sect
- 
 
 972 
;       reads:
- 
 
 973 
;        pusha
- 
 
 974 
;        xor     si,si
- 
 
 975 
;       newread:
- 
 
 976 
;        mov     bx,0xa000               ; es:bx -> data area
- 
 
 977 
;        mov     ax,0x0200+18            ; read, no of sectors to read
- 
 
 978 
;        int     0x13
- 
 
 979 
;        test    ah, ah
- 
 
 980 
;        jz      goodread
- 
 
 981 
;        inc    si
- 
 
 982 
;        cmp     si,10
- 
 
 983 
;        jnz     newread
- 
 
 984 
;        mov     si,badsect-0x10000
- 
 
 985 
;sayerr_plain:
- 
 
 986 
;        call    printplain
- 
 
 987 
;        jmp     $
- 
 
 988 
;       goodread:
- 
 
 989 
;        ; move -> 1mb
- 
 
 990 
;        mov     si,movedesc-0x10000
- 
 
 991 
;        push    es
- 
 
 992 
;        push    ds
- 
 
 993 
;        pop     es
- 
 
 994 
;        mov     cx,256*18
- 
 
 995 
;        mov     ah,0x87
- 
 
 996 
;        int     0x15
- 
 
 997 
;        pop    es
- 
 
 998 
;
- 
 
 999 
;        test    ah,ah                  ; was the move successfull ?
- 
 
 1000 
;        je      goodmove
- 
 
 1001 
;        mov     dx,0x3f2              ; floppy motor off
- 
 
 1002 
;        mov     al,0
- 
 
 1003 
;        out     dx,al
- 
 
 1004 
;        mov     si,memmovefailed-0x10000
- 
 
 1005 
;        jmp    sayerr_plain
- 
 
 1006 
;      goodmove:
- 
 
 1007 
;
- 
 
 1008 
;    add    dword [movedesc-0x10000+0x18+2], 512*18
- 
 
 1009 
;        popa
- 
 
 1010 
;        inc     dh
- 
 
 1011 
;        cmp     dh,2
- 
 
 1012 
;        jnz     bb2
- 
 
 1013 
;        mov     dh,0
- 
 
 1014 
;        inc     ch
- 
 
 1015 
;        pusha                        ; print prosentage
- 
 
 1016 
;        mov     si,pros-0x10000
- 
 
 1017 
;    shr    ch, 2
- 
 
 1018 
;    mov    al, '5'
- 
 
 1019 
;    test    ch, 1
- 
 
 1020 
;    jnz    @f
- 
 
 1021 
;    mov    al, '0'
- 
 
 1022 
;@@:
- 
 
 1023 
;    mov    [si+1], al
- 
 
 1024 
;    shr    ch, 1
- 
 
 1025 
;    add    ch, '0'
- 
 
 1026 
;    mov    [si], ch
- 
 
 1027 
;        call    printplain
- 
 
 1028 
;        popa
- 
 
 1029 
;       bb2:
- 
 
 1030 
;        pop     ax
- 
 
 1031 
;        dec     ax
- 
 
 1032 
;        push    ax
891 
        jnz     reads
 1033 
;        jnz     reads
892 
       readdone:
 1034 
;       readdone:
893 
        pop     ax
 1035 
;        pop     ax
894 
        mov     si,backspace2-0x10000
 1036 
        mov     si,backspace2-0x10000
895 
        call    printplain
 1037 
        call    printplain
896 
        mov     si,okt-0x10000
 1038 
        mov     si,okt-0x10000
897 
        call    printplain
 1039 
        call    printplain
898 
       no_sys_on_floppy:
 1040 
       no_sys_on_floppy: