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  2. VESA BIOS Extensions - Wikipedia

    en.wikipedia.org/wiki/VESA_BIOS_Extensions

    The x86 "PC" version GNU GRUB 2 has a vbeinfo command for printing out available video modes and vbetest for trying a specific mode. They use a built-in table instead of Function 01h . For other platforms, including x86 EFI, they are replaced by the more generic videoinfo and videotest .

  3. List of DOS commands - Wikipedia

    en.wikipedia.org/wiki/List_of_DOS_commands

    EDIT is a full-screen text editor, included with MS-DOS versions 5 and 6, [1] OS/2 and Windows NT to 4.0 The corresponding program in Windows 95 and later, and Windows 2000 and later is Edit v2.0. PC DOS 6 and later use the DOS E Editor and DR-DOS used editor up to version 7.

  4. Dual-ported video RAM - Wikipedia

    en.wikipedia.org/wiki/Dual-ported_video_RAM

    Dual-ported video RAM (VRAM) is a dual-ported RAM variant of dynamic RAM (DRAM), which was once commonly used to store the Framebuffer in Graphics card, Dual-ported RAM allows the CPU to read and write data to memory as if it were a conventional DRAM chip, while adding a second port that reads out data.

  5. Nonvolatile BIOS memory - Wikipedia

    en.wikipedia.org/wiki/Nonvolatile_BIOS_memory

    Some computer designs have used non-button cell batteries, such as the cylindrical "1/2 AA" used in the Power Mac G4 as well as some older IBM PC compatibles, or a 3-cell nickel–cadmium (Ni–Cd) CMOS battery that looks like a "barrel" (common in Amiga and older IBM PC compatibles), which serves the same purpose. These motherboards often have ...

  6. Video random-access memory - Wikipedia

    en.wikipedia.org/wiki/Video_random-access_memory

    Video random-access memory (VRAM) is dedicated computer memory used to store the pixels and other graphics data as a framebuffer to be rendered on a computer monitor. [1] It often uses a different technology than other computer memory, in order to be read quickly for display on a screen.

  7. MSX Video access method - Wikipedia

    en.wikipedia.org/wiki/MSX_Video_access_method

    The disadvantage is that the program has to use the CPU's dedicated I/O instructions to command the VDP to manipulate the contents of the video RAM. This not only slows down video access but also makes the porting of games from unified-memory platforms more difficult.

  8. Dual-ported RAM - Wikipedia

    en.wikipedia.org/wiki/Dual-ported_RAM

    Dual-ported RAM (DPRAM), also called dual-port RAM, is a type of random-access memory (RAM) that can be accessed via two different buses.. A simple dual-port RAM may allow only read access through one of the ports and write access through the other, in which case the same memory location cannot be accessed simultaneously through the ports since a write operation modifies the data and therefore ...

  9. GPU switching - Wikipedia

    en.wikipedia.org/wiki/GPU_switching

    A classic motherboard with on-board integrated graphics processors, a discrete graphics card can be installed at a PCI slot. GPU switching is a mechanism used on computers with multiple graphic controllers.