Re: SATURN 32K RAM BOARD

[gabe123@freeshell.org (Max Smart)]

mjmahon@aol.com (Michael J. Mahon) wrote in message news:<20030320135628.10901.00002265@mb-dh.aol.com>...
> In article <fbb3caaf.0303191521.4e25d88c@posting.google.com>,
> gabe123@freeshell.org (Max Smart) writes:
> 
> >"Redskull" <redskulldc@DESPAM.yahoo.com.au> wrote in message
> >news:<fTWda.6046$L57.53631@news-server.bigpond.net.au>...
> >> "Max Smart" <gabe123@freeshell.org> wrote in message
> >> fbb3caaf.0303180855.213750c0@posting.google.com">news:fbb3caaf.0303180855.213750c0@posting.google.com...
> >> > "Redskull" <redskulldc@DESPAM.yahoo.com.au> wrote in message
>  news:<i5Bda.4437$L57.41352@news-server.bigpond.net.au>...
> >> > > "Max Smart" <gabe123@freeshell.org> wrote in message
> >> > > fbb3caaf.0303161311.5974b4@posting.google.com">news:fbb3caaf.0303161311.5974b4@posting.google.com...
> >> > > > I have a Saturn 32k ram board for an apple ][+.  Can anyone please
> >> > > > tell me how to use it.  It has a cable that also plugs into a ram
> >> > > > socket on the apple ][ motherboard.
> >> > >
> >> > > Works exactly the same as a 16k language card except for:
> >> > >
> >> > > Selecting the different 16k banks is accomplished by accessing
> >> > > C0N4 (first 16k bank)
> >> > > C0N5 (second 16k bank)
> >> > > when N is the slot number the card is in + 8.
> >> > > ie. slot 0 = C084,C085.
> >> > >
> >> > > Larger saturn cards use C0N6,7,C,D,E,F aswell
>  
> >> > > Red
> >> > which ram socket do i plug the cable into.  It won't reach the one in
> >> > the back corner.
> >> 
> >> What model Apple 2 are you trying to plug it into?
> >> 
> >> Red
> >An Apple ][+.
> 
> That's good.  Any Apple later than the ][+ requires a different kind of
> memory expansion card.
> 
> The 16-pin connector plugs into the "nearest" 16K DRAM chip socket,
> after removing the DRAM, of course, and relocating it to the empty
> 16K DRAM socket on the 32KB card.  (Often, this socket will already
> have a 16K DRAM in it, since the person who removed the card from
> the system it came from didn't know enough to remove it and replace
> it in the main board DRAM socket the card's jumper was plugged into.)
> 
> This hack provides the 32KB card with DRAM timing signals which
> are not present on the slot connectors, and would otherwise have to
> be generated on the card.  It was first used by Apple in the "Language
> Card" 16KB card, which generally set the hardware standards for
> memory expansion cards on the early ]['s--and the "chip jumper" hack
> was one of the stunts that became semi-standard.
> 
> -michael
> 
> Check out amazing quality 8-bit Apple sound on my
> Home page:  http://members.aol.com/MJMahon/


I installed the card but i dont know how to use it.  I tried peeking
and poking at those memory locations but nothing happened and
sometimes it freezes and i have to reset.  Also, what does the swithc
on the back of the card do?