198 lines
5.4 KiB
PHP
198 lines
5.4 KiB
PHP
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;******************************************************************************
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;
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; (C) Copyright MICROSOFT Corp., 1993-1994
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;
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; Title: Virtual Flat Device Exported Services
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;
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; Version: 2.00
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;
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; Date: 8-Nov-1993
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;
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; Author: RAP
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;
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;------------------------------------------------------------------------------
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;
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; Change log:
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;
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; DATE REV DESCRIPTION
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; ----------- --- -----------------------------------------------------------
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; 08-Nov-1993 RAP Original
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;
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;==============================================================================
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IFDEF VMM_TRUE
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Begin_Service_Table VFLATD
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VFLATD_Service VFLATD_Get_Version, LOCAL
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VFLATD_Service VFLATD_Unmap_Flat_Selector, LOCAL
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End_Service_Table VFLATD
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ENDIF
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VflatD_Chicago_ID equ 011Fh ; OEM #8 Device #31
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VflatD_Windows_ID equ (0440h + 29d) ; MMSYS OEM# device 30
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ifdef WIN31
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VflatD_Device_ID equ VflatD_Windows_ID
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VflatD_Version equ 0160h ; 1.60
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else
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VflatD_Device_ID equ VflatD_Chicago_ID
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VflatD_Version equ 0201h ; 2.01
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endif
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;
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; PM API defines
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;
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VFlatD_Query equ 0
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VFlatD_Get_Sel equ 1
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VFlatD_ResetBank equ 2
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VFlatD_Create_Virtual_Frame_Buffer equ 3
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VFlatD_Create_Physical_Frame_Buffer equ 4
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VFlatD_Begin_Linear_Access equ 5
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VFlatD_End_Linear_Access equ 6
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;******************************************************************************
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;
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; VFLATD_PM_API_Query
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;
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; DESCRIPTION:
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; Query VFlatD info
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;
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; ENTRY:
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; Client_DX = 0
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;
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; EXIT:
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; Client_EAX = VFlatD version (HIWORD flags)
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; Client_EBX = GDT selector to the frame buffer
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; Client_ECX = size of frame buffer
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; Client_EDX = linear base of frame buffer. (if linear mode)
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;
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;==============================================================================
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;******************************************************************************
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;
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; VFLATD_PM_API_Create_Virtual_Frame_Buffer
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;
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; DESCRIPTION:
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; Return a GDT selector to the flat video buffer
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;
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; ENTRY:
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; Client_DL = 3
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; Client_DH = flags
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; Client_EAX = size of frame buffer (in bytes) (ie 2MB)
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; Client_EBX = size of a bank (in bytes) (ie 64k)
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; Client_ESI = location of bank (ie A0000)
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; Client_CX = size of bank switch code
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; Client_ES:DI = ptr to bank switch code
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;
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; EXIT:
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; Client_AX = Selector to flat video buffer
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; Client_EDX = Linear base of flat video buffer
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; Client carry flag clear
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;
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;==============================================================================
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;******************************************************************************
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;
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; VFLATD_PM_API_Create_Physical_Frame_Buffer
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;
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; DESCRIPTION:
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; Return a GDT selector to a flat video buffer
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;
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; ENTRY:
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; Client_DL = 4
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; Client_DH = flags
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; Client_EAX = physical base of frame buffer
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; Client_ECX = size of frame buffer (in bytes)
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;
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; EXIT:
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; Client_AX = Selector to flat video buffer
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; Client_EDX = Linear base of flat video buffer
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; Client carry flag clear
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;
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;==============================================================================
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;******************************************************************************
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;
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; VFLATD_PM_API_Get_Video_Base
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;
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; this function has been replaced with VflatD_Create_Virtual_Frame_Buffer
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; it is still supported for old code.
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;
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; DESCRIPTION:
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; Return a GDT selector to the flat video buffer
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;
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; ENTRY:
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; Client_DX = 1
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; Client_AX = # of pages of video memory
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; Client_CX = size of bank switch code
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; Client_ES:DI -> bank switch code
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;
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; EXIT:
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; Client_AX = Selector to flat video buffer
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; Client_EDX = Linear base of flat video buffer
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; Client carry flag clear
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;
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;==============================================================================
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;******************************************************************************
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;
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; VFLATD_PM_API_Reset
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;
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; DESCRIPTION:
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; Called when Video HW has been changed by someone other
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; than VFLATD.
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;
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; ENTRY:
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; Client_DX = 2
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;
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; EXIT:
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; Client carry flag clear
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;
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; USES:
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; EAX, Flags, Client_AX, Client_Flags
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;
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;==============================================================================
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;******************************************************************************
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;
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; VFLATD_PM_API_Begin_Linear_Access
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;
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; DESCRIPTION:
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; Start linear access to the frame buffer
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;
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; the frame buffer can be accessed via its linear address
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; (by default the frame buffer *must* be accessed with
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; the default selector)
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;
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; the frame bufffer will remain in linear access mode, until
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; VFLATD_PM_API_End_Linear_Access is called.
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;
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; this call can be nested.
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;
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; ENTRY:
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; Client_DX = 5
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;
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; EXIT:
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; Client_EAX = access count
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;
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;==============================================================================
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;******************************************************************************
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;
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; VFLATD_PM_API_End_Linear_Access
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;
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; DESCRIPTION:
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; Stop linear access to the frame buffer
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;
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; this must be called the same number of times as
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; VFLATD_PM_API_Begin_Linear_Access to actualy leave linear mode.
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;
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; ENTRY:
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; Client_DX = 6
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;
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; EXIT:
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; Client_EAX = access count
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;
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;==============================================================================
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