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80286 schematic

Abstract: lp9 pinout fe3031 FE3021A 8042 "Keyboard Controller" A1981 8042 keyboard controller LIM EMS 4.0 tl982 c3fff
Text: FE3021 DESCRIPTION 1.0 DESCRIPTION 1.1 The FE3021 is a 16 MHz AT address buffer and memory controller in a 132-pin JEDEC package. Chip count is significantly reduced by integrating the memory controller, AT bus address buffers, and I/O into one chip. The memory controller is a