Folks, I got this memory expansion card. It is a "KGB-PRK II".
I didn't connected it yet to a X68...
However, considering this card has all memory modules in place (16 memory ICs), how much memory it would add to a X68?
http://www.flickr.com/photos/85569972@N00/11325799064/#in/set-72157638742278433 (http://www.flickr.com/photos/85569972@N00/11325799064/#in/set-72157638742278433)
I'm not totally sure..
But..
With those jumpers on, i'll bet on 8mb :)
Congratulations :)
Hi Neshek,
Thanks for your reply.
Indeed, I searched the internet for the memory IC datasheet (HM514400AZ8).
I found that this IC is a "1,048,576-WORD x 4-BIT DYNAMIC RAM".
http://www.alldatasheet.com/view.jsp?Searchword=HM514400AZ8 (http://www.alldatasheet.com/view.jsp?Searchword=HM514400AZ8)
Thus, if I'm not wrong, each memory IC holds 512KB, since there's 16 of them, you are right: the card has 8 MB.
BTW, where did you get this 8mb board?
Was it expensive?
It is indeed a 8MB expansion card when fully populated.
I had one that only had half the memory chips in it which I then soldered in more bringing it from 4MB to 8MB. I had a post about it here http://nfggames.com/forum2/index.php?topic=5170.0 (http://nfggames.com/forum2/index.php?topic=5170.0). The jumper settings in your pic are correct for 8MB too.
Hi Neshek,
I purchased this card from Shopping Mall Japan.
It was a bit expensive, which is unfortunately the standard for such X68 hardware. :(
Best regards,
e1000