sfahey wrote:

>  > The 512K version of that part is $$$ thats why I was asking ;)
> 
> I'm looking at my Alex-Z80 cards... knowing they could be bumped to 20MHz and
> 512K and I feel sorta bummed that they are stock.

It's all simple economics.  I'm sure Alex would be glad to put up kits or 
assembled boards at 20Mhz, but they're going to be more expensive.

FWIW, the upgrade is quite simple.  I just updated mine this morning (20Mhz. 
crystal, 2x22pf chip capacitors and a faster Z80).  Went quick and smooth and 
runs like the wind!

The combination of the 20Mhz. Z80 card and my 12Mhz. ZipGSX equipped IIGS 
should be quite responsive when I get that up and running.

FYI:  For those planning to upgrade memory to 512k, there is something odd 
going on with the ramdisk that causes BDOS errors while writing.  Alex is 
looking at it with a logic analyzer and I've been poring over the source code. 
  It's almost certainly a bug in the PCPI driver code, not the hardware. 
Since the original Applicard could not be expanded past 256k of banked memory, 
I'm betting that some code path in there was never exercised and has always 
been faulty.
--- SBBSecho 2.12-Win32