MAX 2 with STRATIX 4

[Altera_Forum]

we are migrating from stratix 2 to stratix 4, on stratix 2 we were using 

EPM570(MAX 2) with a spansion flash. on the altera reference design they have used EPM2210(MAX2) with a similar size flash.  EPM2210 is 256 pin and bigger in size than EPM570, should I go with their reference design or just used our previous MAX 2 design?  the configuration data bus is still 8 bit wide, but I have no clue how the data is written into the fpga and how would changing the max 2 device affect that.

[Altera_Forum]

Some reference designs also use the MAX II for other functions beyond the configuration needs. 

Check out the entire reference design (one-wire perhaps) and you may see that swithces, LED, etc are also routed to the MAX II.  You do not need that I suspect. As long as you have enough to do the addressing and data and control, you should be good to go.

[Altera_Forum]

we don't need the other stuff(switches, leds etc) 

so will stick to our design then I guess are there any compatibility issues between max2 devices and stratix fpga's that we need to consider or in other words how to make sure the max2 that we are using right now is compatible with stratix4  thanks