RIC-8 Slave for the C2 Professional


As of March, 2010 we started shipping a version with new metal that reverses the CRS/DG and HDG controls, and adds indicators to the CRS/DG control.

Click the image that most closely resembles your RIC-8.
Slave RIC-8_800x.png (47.31 Kb)
RIC-8 Old Metal

Slave RIC-8 new_800x.png (49.32 Kb)
RIC-8 New Metal


Text links:

Updating the Slave RIC-8

Get the Required Files

The Cypress Loader allows you to update certain Cypress-based PFC USB devices.

Get the Loader

Get the Driver

  • Download both these files and put them in the same directory together (may be the same directory as above):

Get the RIC Firmware

Now select the illustration (above) that most closely matches your RIC. Download the DLD file and save to a convenient location.

Remove the RIC

  1. Unplug power from the Cirrus II Professional (C2).
  2. Use a #2 Phillips screwdriver to remove the four screws at the four corners of the RIC. (This is an ordinary screwdriver you can get at any hardware store. #2 refers to the size of the tip. You may get away with using a #1 but it fits loosely and is more likely to strip the screw heads.)
  3. Carefully pull the RIC out of its place. You may detach the cable or leave it; it’s OK to leave the RIC hanging from the wire for this exercise as long as you don’t apply any undue force.
C2Pro_800x.png (175.11 Kb)

Short the Programming Pins

You need to short out two of the five programming pins on the programming header, J2. This is located just to the right of the USB connector as you view the back of the RIC (center of photo). Pin 1, at the top, is marked on the circuit board. You need to short the two bottom pins together, pins 4 and 5, without shorting them to anything else.
RIC1_64.jpg (277.04 Kb)

The simplest way is to use a jumper cap like in the picture below. However, jumper caps are not always available.
RIC2_64.jpg (257.14 Kb)

You can use a piece of sticky-tape and a metal paperclip, items which are usually easy to find. Almost any kind of non-metallic tape will do as long as it’s thin enough.
  1. Put a piece of tape over the top three pins (left, below).
  2. Slide the paperclip so that it touches both the two bottom pins (right, below).
RIC3_64.jpg (278.65 Kb) RIC4_64.jpg (281.58 Kb)

By shorting these two pins together you are telling the RIC that it should go into programming mode and not try to run normally. Once the programming pins are shorted you can connect a USB cable.

Connecting to USB

Since you don’t need the rest of the C2 for this exercise, feel free to borrow its USB cable if another one is not at hand. There is no need to power up the C2 at any time, the RIC will get its power from the USB connection.

The rest of these instructions are on the Cypress Loader page. Click here to continue.


Cable for Slave RIC-8


  • 4-ft ribbon cable, 10-wire
  • 5x2 IDC header connector (female)
  • 5x1 .100 spacing inline locking connector (female)

Pinout of the 5x1 connector:

5x1 pinRibbon cable wire#Signal
Pin 1Wires 1&2GND
Pin 2Wire 4Data
Pin 3Wires 3&5+12v
Pin 4Wire 6Clock
Pin 5Wires 7&8GND


Wires 9&10 are not connected and may be cut off.


C2 Professional and Panels