Re: More fun with Freed Z80

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

 To: Alex Freed
Alex Freed wrote:
> a2retro wrote:
> > Sorry I am a little confused -  that part is supposed to be NVSRAM 
> > already.
>
> I am sorry. I didn't expect a lot of people to read that schematics too 
> closely :)

I go to the source when I want to know something. :)

> The used SRAM chip has nothing to do with DS1245. I just used a library
> part with the right pinout. 

I was starting to think that based on your earlier answers. No worries - 
I have done the same thing myself.

The actual part used is AS6C1008 (128K) or
> AS6C4008 (512K).
>
> Those who got a kit are of course free to experiment with other chips 
> but these are pretty good for reasons mentioned.

I agree. I was surprised to see you specify a NVRAM part initially. One 
of the reasons I looked more closely then others is I am making that 
decision for my own project and I like to see what other people are 
doing in similar situations.

> I agree that having a RAM disk on an NV RAM is attractive, but not sure 
> the existing driver would not attempt to "reformat" it every time.
>
> Also if files can be easily accessed on a ProDOS volume mounted on CFFA, 
> it becomes less important to have NV RAM.

True. These are the same questions and considerations I am working 
through for my own project. One might think it's a simple thing to pick 
a RAM chip but there are a lot of factors to be considered if you let 
them creep in there.

Glenn