Since kernal34 asked the question about asynchronous SRAM, I thought I'd throw this one out too, for those familiar with DRAM.
I've never paid much attention to DRAM. Is there a DRAM IC or module of 8Mx8 or 16Mx8 which:
does not need a DRAM-management IC (unless it's already part of the module)
does not need software column-strobing
has 8 or 10ns truly random access (not just 8ns after a burst is started)
preferably 5V
has no more than say 10pF loading per pin?
5V monolithic SRAMs seem to top out at 512KB, and 3V ones at 2MB. It'd be nice to be able to get a whole lot more for a 20MHz '816 computer all in one IC or module that presents a light bus load and requires no wait states, no adding to the interrupt load for software column strobing or otherwise upsetting the processor's critical timing in real-time applications, etc.. If it were 9 or 16 or 18 bits wide, that would be fine too-- I just wouldn't use the extra bits.