Re: More fun with Freed Z80

["a2retro" <a2retro@a2central.com.remove-9ho-this>]

 To: Steven Hirsch
Steven Hirsch wrote:
> a2retro wrote:
> >  To: Steven Hirsch
> > Steven Hirsch wrote:
> > > All,
> > >
> > > I received my 512k SRAM chips yesterday and upgraded the board.   It 
> > > now provides a 391k on-board ramdisk when the RAMDISK.DVR is genned 
> > > into the system.
> > >
> > > I can also confirm that my ProPartition utility and driver works 
> > > fine. I was able to create a quick 4MB partition on my CFFA and am 
> > > using that as the A: disk currently (you cannot boot directly from 
> > > the hard disk with this driver. That will have to wait until I can 
> > > blow the dust off the modified PCPI operating system that boots from 
> > > ProDOS).
> > >
> > > I have the USB interface and 20Mhz. crystal already.  The 20Mhz. Z80 
> > > and PLDs should be here Monday.
> > >
> > > Steve
> >
> > Hi Steve did you go with a NV 512K sram chip or regular sram?
>
> Just a plain 512Kx8 70nsec. SRAM.  Not sure if an NV part would work in 
> that circuit.

The part spec'd in Alex's schematic is DS1245AB-85

http://pdfserv.maxim-ic.com/en/ds/DS1245AB-DS1245Y.pdf

http://search.digikey.com/scripts/dksearch/dksus.dll?Detail&name=DS1245AB-85-ND

Not sure what he shipped in the kit as my kits have not arrived yet.

The 512K version of that part is $$$ thats why I was asking ;)

Glenn