810 lines
14 KiB
NASM
810 lines
14 KiB
NASM
;
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; MenuetOS Driver (vmode.mdr)
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; Target: Vertical Refresh Rate programming and videomode changing
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;
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; Author: Trans <<<<<13>>>>>
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; Date: 20.07.2003
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;
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; Version: 1.0
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; OS: MenuetOS
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; Compiler: FASM
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;
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use32
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__DEBUG__ = 1
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;macro align value { rb (value-1) - ($ + value-1) mod value }
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macro func name {
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if used name
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align 4
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name@of@func equ name
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; _numb `name,name
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}
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macro begin {
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align 4
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name@of@func:
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}
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endf fix end if
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macro return _val {
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if ~_val eq eax
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mov eax,_val
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end if
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ret
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}
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macro comment symb { ;s
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if 0=1
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}
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^ fix end if
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include 'struct.inc'
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B_HOST fix HOST_BENDIAN ; HOST_LENDIAN
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;-----------------------------------------------------------------------------
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org 0x760000
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headerstart=$
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mdid db 'MDAZ' ; 4 byte id
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mdhver dd 0x00 ; header version
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mdcode dd MDSTART ; start of code
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mdver dd 0x00000001 ; driver version (subversion*65536+version)
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mdname db 'Trans VideoDriver' ; 32 bytes of full driver name
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times (32-($-mdname)) db ' ' ;
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headerlen=$-headerstart
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times (256-headerlen) db 0 ; reserved area for future
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MDSTART: ; start of driver code ( base_adr+256 bytes)
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; ebx(=ecx in program):
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; 1 - Get DriverInfo and Driver Initial Set
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; 2 - Get Current Video Mode With Vertical Refresh Rate
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; 3 - Change Video Mode
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; 4 - Return at Start System Video Mode
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; 5 - Change vertical and horizontal size of visible screen area
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; 6 - Change Vert/Hor position visible area on screen (not complete yet)
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;
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; MAXF - ...
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MAXF=7
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;-------Main Manager-------------
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pushad
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cmp ebx,1
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jb mdvm_00
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cmp ebx,MAXF
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ja mdvm_00
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call dword [mdvm_func_table+ebx*4]
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mov [esp+28],eax
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mov [esp+24],ecx
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mov [esp+20],edx
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mov [esp+16],ebx
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popad
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retn
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mdvm_00:
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popad
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xor eax,eax
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dec eax
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retn
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; ------Drivers Functions----------
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; EBX=1 (in applications ECX=1)- Get DriverInfo and Driver Initial Set
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;
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; IN: ecx (in app. edx) - pointer to 512-bytes info area in application
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; OUT:
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;
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func vm_info_init
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begin
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push ecx
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cmp [mdrvm],dword 0
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jnz .vmii_00
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call vm_safe_reg
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call vm_get_initial_videomode
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mov eax,[initvm]
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mov [currvm],eax
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; call vm_search_sys_func_table
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call vm_get_cur_vert_rate
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mov [initrr],eax
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call vm_calc_pixelclock
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call vm_calc_refrate
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inc [mdrvm]
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.vmii_00:
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pop ecx
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call vm_transfer_drv_info
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mov ebx,dword [refrate]
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mov eax,dword [mdid] ;dword [systlb]
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retn
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endf
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; EBX=2 (in applications ECX=2)- Get Current Video Mode
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;
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; OUT: eax = X_screen*65536+Y_screen
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; ebx = current vertical rate
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; ecx = current video mode (number)
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func vm_get_cur_mode
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begin
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cmp [mdrvm],dword 0
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jz .vmgcm_00
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call vm_get_cur_vert_rate
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mov eax,[0FE00h]
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mov ebx,[0FE04h]
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shl eax,16
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add eax,ebx
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add eax,00010001h
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mov ebx,[refrate]
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mov ecx,[currvm]
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retn
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.vmgcm_00:
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xor eax,eax
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dec eax
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retn
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endf
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; EBX=3 (in applications ECX=3)- Change Video Mode
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;
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; IN: ecx = VertRate*65536+VideoMode
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; OUT: eax = 0 if no error
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;
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func vm_set_video_mode
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begin
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cmp [mdrvm],dword 0
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jz .vmsvm_00
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call vm_set_selected_mode
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; xor eax,eax
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retn
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.vmsvm_00:
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xor eax,eax
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dec eax
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retn
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endf
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; EBX=4 (in applications ECX=4)- Return at Start System Video Mode
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;
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; IN:
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; OUT: eax = = 0 if no error
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;
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func vm_restore_init_video_mode
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begin
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cmp [mdrvm],dword 0
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jz .vmrivm_00
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call vm_restore_reg
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xor eax,eax
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retn
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.vmrivm_00:
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xor eax,eax
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dec eax
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retn
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endf
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; EBX=5 (in applications ECX=5)- Change vertical and horizontal size
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; of visible screen area
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; IN: ecx (in app. edx) = 0/1 - -/+ horizontal size on 1 position
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; = 2/3 - -/+ vertical size on 1 position (8 pixels)
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; ^-^----- not complete yet
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; OUT: eax = = 0 if no error
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;
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func vm_change_screen_size
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begin
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cmp [mdrvm],dword 0
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jz .vmcss_00
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cmp cl,1
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ja .vmcss_01
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mov eax,ecx
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call vm_inc_dec_width
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xor eax,eax
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retn
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.vmcss_01:
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and ecx,01h
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mov eax,ecx
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; call vm_inc_dec_high ; not complete yet
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xor eax,eax
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retn
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.vmcss_00:
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xor eax,eax
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dec eax
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retn
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endf
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; EBX=6 (in applications ECX=6)- Change Vert/Hor position visible area on screen
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;
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; IN: ecx (in app. edx) = 0/1 - -/+ horizontal position on 1 point
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; = 2/3 - -/+ vertical position on 1 pixel
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; ^-^----- not complete yet
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; OUT: eax = 0 if no error
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;
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func vm_change_position_screen
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begin
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cmp [mdrvm],dword 0
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jz .vmcps_00
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; ...
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xor eax,eax
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retn
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.vmcps_00:
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xor eax,eax
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dec eax
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retn
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endf
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;-----Drivers Subfunctions---------
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;
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; Searching i40 system functions pointer table in kernel area location
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;
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func vm_search_sys_func_table
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begin
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push eax ; eax - current value
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push ecx ; ecx - will be counter of equevalent value
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push edx ; edx - last value
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push esi ; esi - current address
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xor ecx,ecx
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mov esi,010000h ; Start address of kernel location
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lodsd
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mov edx,eax
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cld
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.vmssft_00:
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cmp esi,30000h
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ja .vmssft_03
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inc ecx
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lodsd
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cmp edx,eax
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mov edx,eax
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je .vmssft_00
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cmp ecx,128
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ja .vmssft_02
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.vmssft_01:
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xor ecx,ecx
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jmp .vmssft_00
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.vmssft_02:
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cmp edx,0
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je .vmssft_01
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sub esi,256*4-1
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mov [systlb],esi
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xor ecx,ecx
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.vmssft_03_0:
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inc ecx
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lodsd
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cmp edx,eax
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mov edx,eax
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jne .vmssft_03_0
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mov esi,dword [systlb]
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cmp cx,60
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jae .vmssft_03
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add esi,256*4-4
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lodsb
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mov edx,eax
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jmp .vmssft_01
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.vmssft_03:
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mov [systlb],esi
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pop esi
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pop edx
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pop ecx
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pop eax
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retn
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endf
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; IN:
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; OUT: eax= vertical rate in Hz
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func vm_get_cur_vert_rate
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begin
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push edx
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push ebx
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xor eax,eax
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mov edx,eax
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mov ebx,eax
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mov dx,03DAh
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.vmgcvt_00:
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in al,dx
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test al,8
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jz .vmgcvt_00
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.vmgcvt_01:
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in al,dx
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test al,8
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jnz .vmgcvt_01
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mov ebx,edx
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rdtsc
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mov edx,ebx
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mov ebx,eax
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.vmgcvt_02:
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in al,dx
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test al,8
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jz .vmgcvt_02
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.vmgcvt_03:
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in al,dx
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test al,8
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jnz .vmgcvt_03
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rdtsc
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sub eax,ebx
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mov ebx,eax
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mov eax,[0F600h]
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xor edx,edx
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div ebx
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inc eax
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mov [refrate],eax
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pop ebx
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pop edx
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retn
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endf
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func vm_calc_pixelclock
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begin
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push ebx
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push edx
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xor eax,eax
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mov al,[_00]
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add ax,5
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shl eax,3
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xor ebx,ebx
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mov bl,[_06]
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mov bh,[_07]
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and bh,00100001b
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btr bx,13
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jnc .vmcpc_00
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or bh,2
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.vmcpc_00:
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xor edx,edx
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mul ebx
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xor edx,edx
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mul [initrr]
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mov [pclock],eax
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pop edx
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pop ebx
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retn
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endf
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;
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; Safe of initial CRTC state
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;
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func vm_safe_reg
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begin
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push edx
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push ebx
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push ecx
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push edi
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cli
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mov dx,3d4h ; CRTC
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mov al,11h
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out dx,al
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inc dx
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in al,dx
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and al,7fh
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out dx,al ; Clear protection bit
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dec dx
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xor ecx,ecx
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mov cl,19h
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xor bl,bl
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mov edi,CRTCreg
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.vmsr_00:
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mov al,bl
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out dx,al
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inc dx
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in al,dx
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dec dx
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stosb
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inc bl
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loop .vmsr_00
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sti
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pop edi
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pop ecx
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pop ebx
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pop edx
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retn
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endf
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;
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; Restore of initial CRTC state
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;
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func vm_restore_reg
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begin
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push eax
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push ebx
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push edx
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push esi
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mov eax,[oldX]
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mov [0FE00h],eax
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mov eax,[oldY]
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mov [0FE04h],eax
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mov dx,03dah
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.vmrr_00:
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in al,dx
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test al,8
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jnz .vmrr_00
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.vmrr_01:
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in al,dx
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test al,8
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jnz .vmrr_01
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cli
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mov dx,03c4h
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mov ax,0101h
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out dx,ax
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mov dx,3d4h ; CRTC
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mov al,11h
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out dx,al
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inc dx
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in al,dx
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and al,7fh ; Clear Protection bit
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out dx,al
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dec dx
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xor ecx,ecx
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mov cl,19h
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mov esi,CRTCreg
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xor bl,bl
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.vmrr_02:
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lodsb
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mov ah,al
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mov al,bl
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out dx,ax
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inc bl
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loop .vmrr_02
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sti
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; call ref_screen
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pop esi
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pop edx
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pop ecx
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pop eax
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retn
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endf
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; Calculate of possible vertical refrash rate
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; (light version of function)
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func vm_calc_refrate
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begin
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push ebx
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push ecx
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push edx
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push edi
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push esi
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mov eax,[pclock]
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xor edx,edx
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mov edi,_m1
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mov ebx,eax
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mov ecx,(1696*1065)
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div ecx
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xor edx,edx
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stosw
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add edi,8
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mov eax,ebx
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mov ecx,(1344*804)
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div ecx
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xor edx,edx
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stosw
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add edi,8
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mov eax,ebx
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mov ecx,(1056*636)
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div ecx
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xor edx,edx
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stosw
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add edi,8
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mov eax,ebx
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mov ecx,(800*524)
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div ecx
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xor edx,edx
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stosw
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mov edi,_m1
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mov esi,edi
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mov ecx,5*4
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.vmcrr_00:
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lodsw
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cmp ax,55
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jb .vmcrr_01
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stosw
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loop .vmcrr_00
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pop esi
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pop edi
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pop edx
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pop ecx
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pop ebx
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retn
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.vmcrr_01:
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xor ax,ax
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stosw
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loop .vmcrr_00
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pop esi
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pop edi
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pop edx
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pop ecx
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pop ebx
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retn
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endf
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func vm_get_initial_videomode
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begin
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push eax
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mov eax,dword [0FE00h]
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mov [oldX],eax
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mov eax,dword [0FE04h]
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mov [oldY],eax
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mov eax,dword [0FE0Ch] ; initial video mode
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and ax,01FFh
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mov dword [initvm],eax
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pop eax
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retn
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endf
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; IN: eax = 0/1 - -/+ 1 position of width
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func vm_inc_dec_width
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begin
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push ebx
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push edx
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mov ebx,eax
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mov dx,3d4h ; CRTC
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mov al,11h
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out dx,al
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inc dx
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in al,dx
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and al,7fh ; Clear Protection bit
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out dx,al
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dec dx
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xor al,al
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out dx,al
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inc dx
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in al,dx
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dec al
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cmp bl,0
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jnz .vmidr_00
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inc al
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inc al
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.vmidr_00:
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out dx,al
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pop edx
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pop ebx
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retn
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endf
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;
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; Copy driver info to application area
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;
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; IN: ecx (in app. edx) - pointer to 512-bytes info area in application
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; OUT:
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func vm_transfer_drv_info
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begin
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push ecx
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push edi
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push esi
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mov eax,ecx
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xor ecx,ecx
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mov cl,32/4
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mov esi,mdname
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mov edi,drvname
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rep movsd
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mov ecx,eax
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mov eax,[mdver]
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mov [drvver],eax
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mov edi,[3010h]
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mov edi,[edi+10h]
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add edi,ecx
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mov esi,drvinfo
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xor ecx,ecx
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mov cx,512
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rep movsb
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pop esi
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pop edi
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pop ecx
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retn
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endf
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;
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; Set selected video mode
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; (light version)
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;
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; IN: ecx = VertRate*65536+VideoMode
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;
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func vm_set_selected_mode
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begin
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push edx
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push ecx
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push esi
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ror ecx,16
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cmp cx,00h
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je .vmssm_03
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rol ecx,16
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mov eax,ecx
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shl eax,16
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shr eax,16
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mov [currvm],eax
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cmp cx,112h
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jne .vmssm_00
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mov esi,mode0
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mov ecx,639
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mov edx,479
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jmp .vmssm_st00
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.vmssm_00:
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cmp cx,115h
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jne .vmssm_01
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mov esi,mode1
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mov ecx,799
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mov edx,599
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jmp .vmssm_st00
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.vmssm_01:
|
|
cmp cx,118h
|
|
jne .vmssm_02
|
|
mov esi,mode2
|
|
mov ecx,1023
|
|
mov edx,767
|
|
jmp .vmssm_st00
|
|
.vmssm_02:
|
|
cmp cx,11Bh
|
|
jne .vmssm_03
|
|
mov esi,mode2
|
|
mov ecx,1279
|
|
mov edx,1023
|
|
jmp .vmssm_st00
|
|
.vmssm_03:
|
|
xor eax,eax
|
|
dec eax
|
|
pop esi
|
|
pop ecx
|
|
pop edx
|
|
retn
|
|
.vmssm_st00:
|
|
mov [0FE00h],ecx
|
|
mov [0FE04h],edx
|
|
cli
|
|
mov dx,03c4h
|
|
lodsw
|
|
out dx,ax
|
|
mov dx,03d4h
|
|
mov al,11h
|
|
out dx,al
|
|
inc dx
|
|
in al,dx
|
|
and al,7fh
|
|
out dx,al
|
|
dec dx
|
|
mov ecx,13
|
|
.vmssm_st01:
|
|
lodsw
|
|
out dx,ax
|
|
loop .vmssm_st01
|
|
sti
|
|
xor eax,eax
|
|
pop esi
|
|
pop ecx
|
|
pop edx
|
|
retn
|
|
endf
|
|
|
|
;-[ mike.dld ]- begin ---------------
|
|
|
|
include 'normal.asm'
|
|
|
|
;-[ mike.dld ]- end -----------------
|
|
|
|
;------------DATA AREA---------------
|
|
|
|
align 4
|
|
|
|
mdvm_func_table:
|
|
dd MDSTART
|
|
dd vm_info_init, vm_get_cur_mode
|
|
dd vm_set_video_mode, vm_restore_init_video_mode
|
|
dd vm_change_screen_size ;vm_change_position_screen
|
|
|
|
;-[ mike.dld ]- begin ---------------
|
|
|
|
dd vm_mike_init
|
|
; dd vm_mike_cursor_pos
|
|
dd vm_mike_uninit
|
|
|
|
;-[ mike.dld ]- end -----------------
|
|
|
|
;1280x1024 - 11Bh
|
|
mode3:
|
|
dw 0101h
|
|
dw 0d000h,9f01h,9f02h,9303h,0a904h,1905h,2806h,5a07h
|
|
dw 0110h,8411h,0ff12h,0ff15h,2916h
|
|
|
|
;1024x768 - 118h
|
|
mode2:
|
|
dw 0101h
|
|
dw 0a400h,7f01h,7f02h,8703h,8404h,9505h,2406h,0f507h
|
|
dw 0310h,8911h,0ff12h,0ff15h,2516h
|
|
|
|
;800x600 - 115h
|
|
mode1:
|
|
dw 0101h
|
|
dw 8000h,6301h,6302h,8303h,6a04h,1a05h,7206h,0f007h
|
|
dw 5910h,8d11h,5712h,5715h,7316h
|
|
|
|
;640x480 - 112h, 12h
|
|
mode0:
|
|
dw 0101h
|
|
dw 6000h,4f01h,4f02h,8303h,5304h,9f05h,00b06h,3e07h
|
|
dw 0ea10h,8c11h,0df12h,0df15h,0c16h
|
|
|
|
; 640x400
|
|
;mymode0:
|
|
; dw 0101h
|
|
;_0_7 dw 5f00h,4f01h,4f02h,8303h,5304h,9f05h,0BF06h,1f07h
|
|
; dw 9c10h,8e11h,8f12h,9615h,0B916h ;,4013h
|
|
|
|
; 640x800
|
|
;mymode1:
|
|
; dw 0101h
|
|
; dw 5f00h,4f01h,4f02h,8003h,5004h,9f05h,06006h,0FF07h
|
|
; dw 2d10h,8f11h,2012h,2615h,05716h ;,4013h
|
|
|
|
align 4
|
|
|
|
;-[ mike.dld ]- begin ---------------
|
|
;oldX dd ?
|
|
;oldY dd ?
|
|
;initvm dd ?
|
|
currvm dd 0
|
|
refrate dd 0
|
|
initrr dd 0
|
|
systlb dd 0
|
|
;pclock dd ?
|
|
mdrvm dd 0 ; 0 - not drv init yet, 1 - already drv init
|
|
;-[ mike.dld ]- end -----------------
|
|
|
|
|
|
drvinfo:
|
|
drvname: times 32 db ' '
|
|
drvver dd 0
|
|
times (32-($-drvver))/4 dd 0
|
|
drvmode dw 011Bh,0118h,0115h,0112h
|
|
times (64-($-drvmode))/2 dw 00h
|
|
_m1 dw 0,0,0,0,0
|
|
_m2 dw 0,0,0,0,0
|
|
_m3 dw 0,0,0,0,0
|
|
_m4 dw 0,0,0,0,0
|
|
_m5 dw 0,0,0,0,0
|
|
times (512-($-drvinfo)) db 0
|
|
drvinfoend:
|
|
|
|
;-[ mike.dld ]- begin ---------------
|
|
|
|
align 4
|
|
include_debug_strings
|
|
|
|
;-[ mike.dld ]- end -----------------
|
|
|
|
DRVM_END:
|
|
|
|
align 4
|
|
|
|
;-[ mike.dld ]- begin ---------------
|
|
oldX dd ?
|
|
oldY dd ?
|
|
initvm dd ?
|
|
pclock dd ?
|
|
;-[ mike.dld ]- end -----------------
|
|
|
|
CRTCreg:
|
|
_00 db ?
|
|
_01 db ?
|
|
_02 db ?
|
|
_03 db ?
|
|
_04 db ?
|
|
_05 db ?
|
|
_06 db ?
|
|
_07 db ?
|
|
_08 db ?
|
|
_09 db ?
|
|
_0a db ?
|
|
_0b db ?
|
|
_0c db ?
|
|
_0d db ?
|
|
_0e db ?
|
|
_0f db ?
|
|
_10 db ?
|
|
_11 db ?
|
|
_12 db ?
|
|
_13 db ?
|
|
_14 db ?
|
|
_15 db ?
|
|
_16 db ?
|
|
_17 db ?
|
|
_18 db ?
|
|
_19 db ?
|
|
|
|
;-[ mike.dld ]- begin ---------------
|
|
|
|
cnt dd ?
|
|
align 16
|
|
tr RECT
|
|
rct RECT
|
|
;rb 40*sizeof.RECT
|
|
|
|
;-[ mike.dld ]- end ----------------- |