Front Panel Features

• 50 pin connector
  • 2x25 Pinout matches RETRO-EP4CE15 Card pins (1:1 cable)
  • Some unused pins - wired to +3.3V/GND for connecting other cards
• 12 Value LEDs (DB0-11) - octal format
  • Display options: Program Counter (PC), Memory Address, Memory Data, Accumulator
• 12 Load Value Slide Switches (SL0-11) - octal format
  • Enter values: PC, Memory Address, Memory Data, Accumulator
• LNK - Link value slide switch
• DISP - Display 12 Value LEDs select pushbutton
  • Cycles between LEDs displaying PC, Memory Address, Memory Data, Accumulator
• Pushbutton Switches
  • STEP pushbutton - Increment PC
  • 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 pushbutton - Used as EXAMINE
• 4 DISP LEDs - Cycle between 12 LEDs source with DISP pushbutton
  • PC - 12 LEDs display Program Counter value
  • MADR - 12 LEDs display Memory Address value
  • MD - 12 LEDs display Memory Data value
  • AC - 12 LEDs display Accumulator value
• LINK LED - Displays Link value
• RUN LED - Running program
• RUN/HALT slide switch
• PWR - Power LED
• 95x95mm form factor
• (4) 6-32 mounting holes