We first need to assign the channels in the new vector that implement the example block diagram (see "Using DIOEasy with the GC5050/GX5050 Using DIOEasy" on how to rename).
D0-D7: DAC 8 Bit Data Lines
We assign the first eight channels to D0-D7. In order to do that, rename CH0 to D0, CH1 to D1 and so on, up to D7.
Clk: DAC Clock
The Clk will be channel number 8, rename CH8 to Clk.
MC: Master Clear DAC and Bus Controller
The MC will be channel 9, rename CH9 to MC.
BusReq: Is DIO Ready to Output the Next DAC Value?
The BusReq will be channel number 10; rename CH10 to BusReq.