Now to see what are compatible used at the same time.
First off the 1750 512k ram expander, that should work with everything. Aaah sweet, 640K 8bit computer. Well that is until I hack it to 2Mb :-D
Next will be the retro replay with Silver Surfer, should work at the same time with the RAM. I gotta have a high speed serial port to use the 128D on the internet you know!
Finally, for now, will be the Pwr/Link for use with 64HDD. Having a hard drive on the 128D is also quite useful. This will be the question mark, I don't have it yet. It's still in transit from down under. This may not work at the same time as Retro Replay, which would suck. But if it doesn't, there are more than one way to skin a cat ;-) I can use a y serial cable(and maybe a switcher) and just disable the Pwr/Link when i need to use the Silver Surfer. Witht he Y-cable access the 64HDD through the serial link (slower). I also have a 1581 and the 1750 ram disk for mass storage.
Any other C= power users still here? I know you are :-D