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Line 411... Line 411...
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; ENABLE PAGING
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; ENABLE PAGING
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        mov     eax,cr0
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        mov     eax,cr0
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        or      eax,0x80000000
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        or      eax,0x80000000
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        mov     cr0,eax
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        mov     cr0,eax
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        jmp     $+2
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        jmp     $+2
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- 
 
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        call    MEM_Init
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;add 0x800000-0xc00000 area
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        cmp     word [0xfe0c],0x13
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        jle     .less_memory
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        mov     eax,0x800000      ;linear address
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        mov     ebx,0x400000 shr 12 ;size in pages (4Mb)
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        mov     ecx,0x800000        ;physical address
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        jmp     .end_first_block
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.less_memory:
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        mov     eax,0x980000      ;linear address
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        mov     ebx,0x280000 shr 12 ;size in pages (2.5Mb)
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        mov     ecx,0x980000        ;physical address
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.end_first_block:
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        call    MEM_Add_Heap        ;nobody can lock mutex yet
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        call    create_general_page_table
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;add 0x1000000(0xd80000)-end_of_memory area
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        mov     eax,second_base_address
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        mov     ebx,[0xfe8c]
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        mov     ecx,[0xfe84]
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        sub     ebx,ecx
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        shr     ebx,12
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        add     eax,ecx
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        call    MEM_Add_Heap
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;init physical memory manager.
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        call    Init_Physical_Memory_Manager
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        mov     dword [0xfe80],0x800000
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        mov     dword [0xfe80],0x80000000 ;0x800000
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;Set base of graphic segment to linear address of LFB
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;Set base of graphic segment to linear address of LFB
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        mov     eax,[0xfe80]                      ; set for gs
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        mov     eax,[0xfe80]                      ; set for gs
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        mov     [graph_data_l+2],ax
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        mov     [graph_data_l+2],ax
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;        mov     esi,boot_ext_region
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;        mov     esi,boot_ext_region
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;        call    boot_log
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;        call    boot_log
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;        jmp     $
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;        jmp     $
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;extended_region_found:
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;extended_region_found:
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 - 
 
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        call    MEM_Init
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;add 0x800000-0xc00000 area
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        cmp     word [0xfe0c],0x13
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        jle     .less_memory
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        mov     eax,0x80000000      ;linear address
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        mov     ebx,0x400000 shr 12 ;size in pages (4Mb)
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        mov     ecx,0x800000        ;physical address
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        jmp     .end_first_block
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.less_memory:
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        mov     eax,0x80180000      ;linear address
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        mov     ebx,0x280000 shr 12 ;size in pages (2.5Mb)
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        mov     ecx,0x980000        ;physical address
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.end_first_block:
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        call    MEM_Add_Heap        ;nobody can lock mutex yet
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 - 
 
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        call    create_general_page_table
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;add 0x1000000(0xd80000)-end_of_memory area
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        mov     eax,second_base_address
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        mov     ebx,[0xfe8c]
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        mov     ecx,[0xfe84]
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        sub     ebx,ecx
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        shr     ebx,12
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        add     eax,ecx
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        call    MEM_Add_Heap
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;init physical memory manager.
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        call    Init_Physical_Memory_Manager
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