• Thumbnail for A20 line
    The A20, or address line 20, is one of the electrical lines that make up the system bus of an x86-based computer system. The A20 line in particular is...
    42 KB (4,913 words) - 06:44, 22 June 2024
  • 20, a predecessor of the Junkers A 35 aircraft A20 cell line, a cell line. A20 line, an address line on the system bus of x86 processors University of...
    1 KB (272 words) - 15:51, 9 January 2023
  • Real mode (section A20 line)
    disable (force to zero) the A20 address line, between the A20 pin on the 80286 and the system bus; this is known as Gate-A20 (the A20 gate), and it is still...
    10 KB (1,508 words) - 10:08, 25 June 2024
  • Thumbnail for DOS memory management
    compatibility with the PC and XT behavior, the AT included an A20 line gate (Gate A20) that made memory addresses on the AT wrap around to low memory...
    15 KB (2,217 words) - 16:02, 21 September 2024
  • Thumbnail for Keyboard controller (computing)
    two additional functions: it controlled access to the Intel 80286 CPU's A20 line in order to implement a workaround for a chip bug, and it was used to initiate...
    3 KB (407 words) - 13:45, 7 September 2024
  • laptop lid switch (received from hall sensor)) Controlling access to the A20 line Thermal measurement (CPU, GPU, Motherboard) and response including fan...
    6 KB (665 words) - 02:39, 11 August 2024
  • segment_part × 16 + offset, if the address line A20 is enabled, or (segment_part × 16 + offset) mod 220, if A20 is off.[clarification needed] Every segment...
    48 KB (4,364 words) - 08:18, 12 September 2024
  • Thumbnail for Intel MCS-48
    0x64. As well as managing the keyboard interface, the 8042 controlled the A20 line gating function for the AT's Intel 80286 CPU and could be commanded by...
    15 KB (1,062 words) - 10:54, 9 May 2024
  • Thumbnail for I386
    clock doubling. Part of the problem was that on most 386 motherboards, the A20 line was controlled entirely by the motherboard with the CPU being unaware,...
    50 KB (4,991 words) - 14:55, 21 September 2024
  • Thumbnail for American Megatrends
    AMI continued to focus on OEM and ODM business and technology. Its product line includes or has previously included AMIBIOS (a BIOS), Aptio (a successor...
    26 KB (2,259 words) - 17:34, 11 September 2024