Re: GS RAM ULTRA DRAMs

["Mark Cummings" <NOTfigjams@primus.com.au>]

thanks Wayne,

> > Do you know where I can put them 2 at a time (256K) without being crude,
or
> > do I just keep guessing until I get lucky. :)
>
> Sorry, I don't have that info.

I found out you just add them in pairs, starting from the front of the card
and working toward the back. ie add 1 to the top row and 1 to the bottom.
This adds 256K at a time as you rightly pointed out.

> > I suppose there will be a pattern, once I start.
> > The annoying thing is I can get heaps of 1bit x 1MB chips from the local
> > electronics shop, and extremely cheap, because they are clearing them
from
> > stock. 4bit x 256K, now that's another story.
>
>  You should try looking for 4bit x 1mb !!

That wouldn't work... or are two of the pins unused in the 256K chip. Even
if that was the case the other pins would have to be tied to stop them
floating.

> > 2816K coming right up this weekend, + the 1MB onboard will almost make a
4MB
> > ROM-3.

Would you believe I scrounged up just enough chips today to fill it to max.
I now have 4992K max RAM disk on the Control Panel. Unfortunately my PC
Transporter is looking a bit naked now. :(

> > Another thing I'm looking for is a test program for this card if one was
> > ever made.
> AE did have a program called GStest.system on their AW expander disks that
> might work. I know it'll test the GS-RAM and GS-RAM III and indicate which
> chips were bad. Never had a chance to try it on the Ultra.

Well as I have a few of those AE Expander versions I'll try it out, thanks.
I think the ones I have are for the IIe only, like the RamWorks series, so I
may not have it. So far I've tried bit-banger with no luck, but then I think
some of the chips are not 100% compatable. I've used the built in
diagnostics with partial success, but I don't know if it checks RAM on the
card. Anyone know ?

Mark