Hi Ryan! ?Thanks! ?We need help with a dense, fast DRAM/SDRAM/DDRx board in the worst way.
?Phat stacks of DDR RAM in the GBs and that requires DDR encoder/decoder logic.
Neither John nor I know anything about it other than it is quite complex. ?I've used
the old school DRAMs (4164) but they are nothing in comparison to DDRx or whatever its
called. ?
Help! ?This is an urgent appeal. ?The S-100 80386 CPU board is basically boned without a
decent RAM board to go along with it. ?We have an 8MB SRAM board that works and can design
an 32MB SRAM board but that just gets you in the door. ?
Sophisticated Linux/BSD OS's all require GBs of RAM and 32MB won't even get a boot
screen. ?Maybe a dirty look from the barest of the bare bones Linux distributions. ?Not
much else.
Help! ?Thanks and have a nice day!
Andrew Lynch
________________________________
From: Ryan K. Brooks <ryan at hack.net>
To: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Sent: Tuesday, August 13, 2013 2:05 PM
Subject: Re: [N8VEM-S100:1811] S-100 68K CPU board V3
On 8/13/13 12:45 PM, John Monahan wrote:
Dave there is a crying need to get some kind of
general DRAM circuit that
can get us GB or DRAM for these 32 bit CPUs.? It's way past my pay scale!
Any help you or others can give would be great.
?
Opencores has a number of ddr-ram controllers.? PCB routing is the toughest part IMHO.
If you guys need help with the 68k stuff, let me know, I've done 060 to 008.
-Ryan