Holding the transmission card in reset causes violation LED to light.
The links on the transmission board are set to 1 (UP) to disable
The teaching board won't program correctly if it is not plugged into a PROM socket.
Never unplug a teaching board while the device to which it is connected is still turned on. It will draw its power from the device through one of the inputs to the teaching board Xilinx chip.
Xilinx chips may fail to program from teaching boards. This is usually
indicated by all eight LEDs on the teaching board flickering. Turn off
immediately (as this may damage the Xilinx chip) and try again. Possible
solutions to this problem include providing a good common earth for the
device and the teaching board and connecting 
on the
Xilinx chip to 
on the PROM emulator through an
inverter.
Yes boards don't obey the Turbochannel spec.
Don't use them in a 25MHz Turbochannel.
Don't use DMA on an alpha.
Yes boards suffer from byte slip in octet3. This does not show up as a bad HEC because that's been done before the conversion to 32bits. It shows up as a corrupt header and/or data.
Yes boards sometimes go into funny states where they report inconsistent status and data goes on the floor.
Yes boards may break if other devices are using DMA on the Turbochannel depending on the speed of the Turbochannel.
In general Yes boards don't work very well.
Be very careful when plugging a YES board cable in to a powered board. If you short any pins while doing this, you see some pretty sparks.
There are two versions of the YES V2 pals. The older versions generate one extra Turbochannel DMA cycle than asked for in both directions. The documentation is wrong about this.
The Yes V2 boards are slightly longer than the Turbochannel mechanical specification specifies. This can be remedy by filing out the front panel mounting holes to move them closer to the front of the board or simply removing the front panel
For 12.5 MHz Turbochannels, capacitor C46 should be changed from 15pF to 30pF.
Resistors R14 and R15 should be 
and R11 (the terminating
resister) should be 
.