Import backup from 2003-08-05
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33
bootsect.asm
33
bootsect.asm
@ -141,11 +141,12 @@ found_file: ;ds:si points to root dir entry of kernel file
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mov bx, FAT_SEG
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mov ds, bx ;ds points to beginning of FAT
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xor bx, bx
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xor di, di
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readkernel_loop:
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cmp ax, 0xff7
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jg readkernel_done
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;inc word [k_count]
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inc di
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push ax
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push bx
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call getCHSfromCluster
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@ -183,20 +184,24 @@ got_cluster:
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jmp readkernel_loop
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readkernel_done: ;now copy kernel to final location in KERNEL_ADD!
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xor ecx, ecx
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mov cx, di ;cx=# of 512byte sectors loaded
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shl ecx, 9 ;ecx=ecx*512
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; mov ax, KERNEL_SEG
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; mov ds, ax
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; xor esi, esi
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; xor ax, ax
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; mov es, ax
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; mov edi, KERNEL_ADD
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; xor ecx, ecx
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; mov cx, [k_count] ;cx=# of 512byte sectors loaded
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; shl ecx, 9 ;ecx=ecx*512
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;movekernel_loop:
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; o32 lodsb ;mov al, [ds:esi]
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; o32 stosb ;mov [es:edi], al
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; o32 loop movekernel_loop
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mov ax, KERNEL_SEG
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mov ds, ax
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xor esi, esi
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xor ax, ax
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mov es, ax
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mov edi, KERNEL_ADD
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movekernel_loop:
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mov al, [ds:esi]
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inc esi
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mov [es:edi], al
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inc edi
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dec ecx
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cmp ecx, 0
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jne movekernel_loop
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jmp $
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