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Rev 928 Rev 996
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;; Copyright (C) KolibriOS team 2007-2008. All rights reserved. ;;
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;; Copyright (C) KolibriOS team 2007-2008. All rights reserved. ;;
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;; Distributed under terms of the GNU General Public License    ;;
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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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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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$Revision: 928 $
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$Revision: 996 $
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; Virtual-8086 mode manager
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; Virtual-8086 mode manager
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        pop     esi
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        pop     esi
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; now V86 specific: initialize known addresses in first Mb
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; now V86 specific: initialize known addresses in first Mb
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        pop     eax
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        pop     eax
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; first page - BIOS data (shared between all machines!)
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; first page - BIOS data (shared between all machines!)
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; physical address = 0x1f0000
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; physical address = 0x1f0000
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; linear address = BOOT_VAR = OS_BASE + 0x1f0000
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; linear address = 0
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        mov     dword [eax], (BOOT_VAR - OS_BASE) or 111b
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        mov     dword [eax], 111b
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        mov     dword [eax+800h], BOOT_VAR
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        mov     dword [eax+800h], OS_BASE
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; page before 0xA0000 - Extended BIOS Data Area (shared between all machines!)
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; page before 0xA0000 - Extended BIOS Data Area (shared between all machines!)
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; physical address = 0x9C000
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; physical address = 0x9C000
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; linear address = 0x8009C000
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; linear address = 0x8009C000
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; (I have seen one computer with EBDA segment = 0x9D80,
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; (I have seen one computer with EBDA segment = 0x9D80,
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; all other computers use less memory)
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; all other computers use less memory)