Altera Nios Development Board - Manual (Page 26)

2–18 Altera Corporation
Nios Development Board Reference Manual, Stratix II Edition July 2005
Expansion Prototype Connectors (PROTO1 & PROTO2)
Figure 2–9 , and Figure 2–10 show connections from the PROTO2
expansion headers to the Stratix II device. Unless otherwise noted, the
labels indicate Stratix II device pin numbers.
Figure 2–9. PROTO1 Expansion Prototype Connector - J15, J16 & J17