Richard,

i have been using the psd813F2-90 and -A-90 for over a year now. great fun to implement 3 statemachines some freq.-devider, decoder and other stuff in just one device.

you mentioned Dallas DS80C320 with PSD813F at what crystal speed and what psd speed ? i would love to use the dallas but it has a too fast memory timing for the wsi so that dallas needs to run slower that 18MHz to fit the -90 types.

how did you solve that ?

Michael