Component editor advice

Hi all,

I also have problems when designing user components. What I have figured out is:

- if a waitrequest-signal is added, you cannot enter setup (and hold) times

- there are some differences between 'Interface to User Logic' and 'Create New Component'

- in 'Create New Component' setup times are not possible when units 'cycles' is selected (even if you add a clk signal as the dialog suggests)

- in 'Interface to User Logic' you can enter setup and hold-times in 'cycles' but they are displayed in fractions of cycles

This concerns Quartus / NIOS II Version 5.0.

I also would like to have a hold time for read access to get a behaviour similar to Motorola Timing and other asynchronous MCUs. A problem is, that at the end of a read-cycle all signals leave their active state simultaneously and produce spikes in sub decoders (In my design NIOS replaces a 68k MCU). Are there any undocumented features?

Mike