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SetVESA_Mode: mov ax,0x4F02 mov bx,[VideoMode] push ds pop es mov di,CRTC int 0x10 int 0x20 VideoMode dw VESA_Mode_640x480x16M | VESA_Bit_LFB | VESA_Bit_CRTC CRTC dw 848 dw 680 dw 744 dw 518 dw 483 dw 487 db 0 dd 52500000 ;pixel clock dw 12000 ;120hz refresh rate times 40 db 0

CRTCInfoBlock struc HorizontalTotal dw ? ; Horizontal total in pixels HorizontalSyncStart dw ? ; Horizontal sync start in pixels HorizontalSyncEnd dw ? ; Horizontal sync end in pixels VerticalTotal dw ? ; Vertical total in lines VerticalSyncStart dw ? ; Vertical sync start in lines VerticalSyncEnd dw ? ; Vertical sync end in lines Flags db ? ; Flags (Interlaced, Double Scan etc) PixelClock dd ? ; Pixel clock in units of Hz RefreshRate dw ? ; Refresh rate in units of 0.01 Hz Reserved db 40 dup (?) ; remainder of ModeInfoBlock CRTCInfoBlock ends

人类存在的目的就是试图理解人类为何存在

我一直不清楚 水平/垂直总量、回扫时间、消隐时间 这些参数是怎么推算出来的 望大虾指点

人类存在的目的就是试图理解人类为何存在

在google输入 Generate mode timings cvt.c 可以找到 www.uruk.org/~erich/projects/c ... 电子束回扫需要时间，单位用像素计量。比所设分辨率大的数值包括回扫的时间

Thanks! 研究中

人类存在的目的就是试图理解人类为何存在

楼主写的asm有点不明白:( VideoMode dw VESA_Mode_640x480x16M | VESA_Bit_LFB | VESA_Bit_CRTC ? times 40 db 0 ?

对于： CRTC dw 848 dw 680 dw 744 dw 518 dw 483 dw 487 db 0 dd 52500000 ;pixel clock dw 12000 ;120hz refresh rate times 40 db 0 这个是CRTCInfoBlock结构： CRTCInfoBlock struc HorizontalTotal dw ? ; Horizontal total in pixels HorizontalSyncStart dw ? ; Horizontal sync start in pixels HorizontalSyncEnd dw ? ; Horizontal sync end in pixels VerticalTotal dw ? ; Vertical total in lines VerticalSyncStart dw ? ; Vertical sync start in lines VerticalSyncEnd dw ? ; Vertical sync end in lines Flags db ? ; Flags (Interlaced, Double Scan etc) PixelClock dd ? ; Pixel clock in units of Hz RefreshRate dw ? ; Refresh rate in units of 0.01 Hz Reserved db 40 dup (?) ; remainder of ModeInfoBlock CRTCInfoBlock ends 至于 VideoMode dw VESA_Mode_640x480x16M | VESA_Bit_LFB | VESA_Bit_CRTC 这是VBE显示模式，估计这些常数是： VESA_Mode_640x480x16M = 112h VESA_Bit_LFB = 4000h VESA_Bit_CRTC = 0800h 这个程序利用了VBE 3.0的一些特性：

Function 02h - Set VBE Mode Input: AX = 4F02h Set VBE Mode BX = Desired Mode to set D0-D8 = Mode number D9-D10 = Reserved (must be 0) D11 = 0 Use current default refresh rate = 1 Use user specified CRTC values for refresh rate D12-13 Reserved for VBE/AF (must be 0) D14 = 0 Use windowed frame buffer model = 1 Use linear/flat frame buffer model D15 = 0 Clear display memory = 1 Don't clear display memory ES:DI= Pointer to CRTCInfoBlock structure Output: AX = VBE Return Status Note: All other registers are preserved. The CRTC information block has the following structure: CRTCInfoBlock struc HorizontalTotal dw ? ; Horizontal total in pixels HorizontalSyncStart dw ? ; Horizontal sync start in pixels HorizontalSyncEnd dw ? ; Horizontal sync end in pixels VerticalTotal dw ? ; Vertical total in lines VerticalSyncStart dw ? ; Vertical sync start in lines VerticalSyncEnd dw ? ; Vertical sync end in lines Flags db ? ; Flags (Interlaced, Double Scan etc) PixelClock dd ? ; Pixel clock in units of Hz RefreshRate dw ? ; Refresh rate in units of 0.01 Hz Reserved db 40 dup (?) ; remainder of ModeInfoBlock CRTCInfoBlock ends The Flags field defines the following flags that modify the operation of the mode as follows: D0 = Double Scan Mode Enable 0 = Graphics mode is not double scanned 1 = Graphics mode is double scanned D1 = Interlaced Mode Enable 0 = Graphics mode is non-interlaced 1 = Graphics mode is interlaced D2 = Horizontal sync polarity 0 = Horizontal sync polarity is positive (+) 1 = Horizontal sync polarity is negative (-) D3 = Vertical sync polarity 0 = Vertical sync polarity is positive (+) 1 = Vertical sync polarity is negative (-)

VBE 3.0: www.vesa.org/public/VBE/vbe3.pdf

人类存在的目的就是试图理解人类为何存在

我用了自己的编译器的语法 times 40 db 0 就是 40 个字节的0