PDP-8 Front Panel

From Land Boards Wiki
Jump to navigation Jump to search

PDP-8 FRONT.png

Features

  • 12 LEDs
    • Display options: PC, Memory Address, Memory Data, Accumulator
  • Value Slide Switches
    • Enter values: PC, Memory Address, Memory Data, Accumulator
  • Display select pushbutton
    • Cycles between PC, Memory Address, Memory Data, Accumulator
  • Pushbutton Switches
    • STEP pushbutton
    • LDPC pushbutton - Load PC from Value Slide Switches
    • DEP pushbutton - Store value from Value Slide Switches to memory
    • LDA pushbutton - Store value from Value Slide Switches to Accumulator
    • RES - Reset pushbutton - resets CPU
    • PB1 - spare
  • LNK - Link value slide switch
  • DISP LEDs
    • PC - 12 LEDs display Program Counter value
    • PC - 12 LEDs display Memory Address value
    • PC - 12 LEDs display Memory Data value
    • PC - 12 LEDs display Accumulator value
  • LINK LED - Displays Link value
  • FN1 spare LED
  • RUN/HALT slide switch
  • PWR - Power LED

PDP-8 FPGA Design

Connector

  • 50 pin connector matches RETRO-EP4CE15 Card
    • Extra power and ground pins

PDP-8 CONN.PNG

Real PDP-8/I Front Panel

PDP-8i FrontPanel 720px.jpg