[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: RAMWorks 2 Chips
David Empson wrote:
James Littlejohn <narguthru@yahoo.com> wrote:
On Jun 13, 7:01 pm, "ict@ccess" <gids...@sasktel.net> wrote:
Looks like it can hold up to 16 MB
http://ae.applearchives.com/apple_e/ramworks_ii/ramworks_ii_brochure.pdf
Am I missing something here?
(13684K)= 16 Meg : (3072K)= 3 Meg
I think there was a (BIG) typo in the sales catalog.
I assume you are referring to this:
"Expandable to 16 Meg (3072K) with expander (piggy-back) card"
Ouch.
Technically the "16 Meg" figure is accurate. The RamWorks is
theoretically expandable that far, as it has an 8-bit bank address
register (assuming the main board was designed to address that much on
the expansion board). It would just be a question of whether a 16 MB
expansion card was ever made.
Thanks, David, for verifying that the bank register is a full 8 bits--
I couldn't remember.
AFAIK, 2 MB was the largest card Applied Engineering ever produced for
it.
Though they clearly advertised a 4MB option (maybe just a pair of 2MB
extenders?).
It looks like it may have been written originally to claim 16 MB maximum
capacity, but then amended to reflect the actual maximum they were
planning on selling, but someone missed changing the "16" to "3".
At the time, 16MB of DRAM would have made for a *very* expensive
Apple II--and a little warm, too! And with the 1Mb chips available,
the "stack" of even full-sized extenders would have covered another
slot, negating one of the claimed advantages. ;-)
-michael
******** Note new website URL ********
NadaNet and AppleCrate II for Apple II parallel computing!
Home page: http://home.comcast.net/~mjmahon/
"The wastebasket is our most important design
tool--and it's seriously underused."