Re: More fun with Freed Z80

[Steven Hirsch <snhirsch@gmail.com>]

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.