altasmi_parallel page writes

Consulting:

http://www.altera.com/literature/ug/ug_altasmi_parallel.pdf

I have implemented the timing on page 11/ figure 11 (aka; Example 2)

I have the PAGE_SIZE parameter set to 256 and thus I have 256 shift_bytes/wren/datain

toggles before later asserting write/wren/addr after which busy is asserted for many cycles

thereafter indicating a write to the EPCS.

Problem is I read back the data as all 0xFF's.

Prior to implementing page writes I performed single writes (disabled page writes

in the mega fcn) and this worked (but took a long time naturally).

Any ideas why page writes not working here?

Is Figure 11 timing correct?

I presume this is still a page size of 8 but only the first four bytes written with the rest

left as 0xFFs.

Does wren need to be asserted through the whole page write(and not toggle)?

Using EPCS128.

Thanks,

Cos