I made a new panel design which should be easier to use. It has a single 36-pin connector with 4 ground and 4 VCC pins. It moves the connector to the bottom of the card.

It should be easy to use white characters on black P-Touch labels to customize the LEDs and switches. The result should be like:

Minimal Front Panel Design

LEDs via the LEDS-SWITCHES card.

• D4 = On while fetching instructions
• D3-D1 = SD card status
  • D3
    • on = SD card installed
    • off = SDHC card installed
  • D2 = Read from SD card
  • D1 = Off when running, On when initialization is in progress
  • D0= Off when running, On when initialization is in progress

Pushbuttons

• SW9 - Reset

Jumpers (J3)

• J3-1 to -3  - selects drive type
  • J3-1 installed = RL
  • J3-2 installed = RK
  • J3-3 installed = RH 
  • J3-4 to J-6 = unused