:orphan:

.. _MEK6800D2:

.. #Metadata {'Product':'MEK6800D2','Name':'MEK6800D2 Development board for the 6800 microprocessor','Folder': 'Hardware'}

MEK6800D2 Development board for the 6800 microprocessor
=======================================================

.. include:: MEK6800D2.carousel.rst

.. note::

   .. csv-table:: 
      :header: "Specification","Description"
      :widths: auto
         
      "NAME","MEK6800D2"
      "MANUFACTURER","Motorola"
      "TYPE","Development Board"
      "ORIGIN","USA"
      "YEAR","1976"
      "END OF PRODUCTION","Unknown"
      "BUILT IN LANGUAGE","Monitor in ROM"
      "KEYBOARD","16 digit hex + 8 function keys"
      "CPU","Motorola M6800"
      "SPEED","625 KHz"
      "RAM","384 bytes"
      "ROM","1024 bytes"
      "TEXT MODES","None"
      "GRAPHIC MODES","None"
      "COLORS","None"
      "SOUND","None"
      "SIZE / WEIGHT","N/A"
      "I/O PORTS","Expansion port, Tape-recorder, Prototype Area"
      "POWER SUPPLY","External PSU 5 VDC, 1A."
      "PERIPHERALS","None supplied"
      "PRICE","$235"


   The MEK6800D2 is a development board for the Motorola 6800 microprocessor, produced by Motorola in 1976. 
   It features a keyboard with hexadecimal keys and an LED display, but also features an RS-232 asynchronous serial interface for a Teletype or other terminal. 
   Data and programs can be loaded from and saved to an audio cassette tape. 
   There is an on-board monitor program called JBUG (analogous to an operating system on a modern computer) fitted in a 1K byte ROM, and the maximum RAM capacity on board is 512 bytes, but this can be expanded via the Motorola EXORciser computer bus interface.

   The hardware consists of two circuit boards:

   - The keyboard-display module contains a 16 key (hexadecimal) data entry section, and eight function keys labeled M, E, R, G, V, N, L, and Pl along with a 6 hex digit LED display. 
   - The microcomputer module 

   Both modules are connected by a 50-pin ribbon cable.

   There is also a parallel bus interface for general purpose I/O.

   Another popular monitor program for this system is called MIKBUG.


.. rubric:: Collection Information

.. csv-table:: 
   :header: "Acquired"
   :widths: auto

   |present| 08-SEP-2025

.. rubric:: Links

:ref:`M6800 Evaluation Kit II Brochure <MEK6800D2-EVAL-KIT-BROCHURE>`