8870 Adventures

© Joe Farr, 2011 – 2026

Home

Category: Help

  • LFI List

    Everything in a Nixdorf machine has an LFI plate stamped or stuck on it; basically a unique part number. This list will give the main LFI numbers for 8870/Quattro machines and those for any other machines I’ve discovered. 1526-xx 8890 DAP4 VDU CPU Processor 16K RAM 1528-01 8870 DAP4 VDU CPU Processor 16K RAM 1528-03…

  • AY-3-1015 Datasheet

    The AY-3-1015 is a Universal Asynchronous Receiver/Transceiver IC (UART) and controls the data communication between the ALME channel and the connected device. 1882-00 and 1882-01 ALME

  • MC14411 Datasheet

    The MC14411 is a bit rate generator IC and is used as the master clock rate generator within the 1882-00 and 1882-01 ALME

  • 2114 Datasheet

    The 2114 SRAM (Static Random Access Memory) chip is a 1024 word x 4 bit memory. Four of these memories are found inside the DAP4 CPU boards (1528-xx) configured as 2Kb x 8 bits and used for the video display buffer. SRAM is useful as it doesn’t require a constant refresh signal from the CPU,…