But seriously: when building a 65816 PC, please try to have 16MB RAM.
Unless you do it in DRAM, the aggregate cost of the SRAMs will be more than the cost of the rest of the system.
You could do it with four of
Garth's memory modules.
There's a 2-megabyte SRAM IC but it's 3.3V (won't do 5V) and only comes in a BGA last I checked. This is all fine for production but not always for hobbyist builds. If someone wants to give me an order big enough to justify the set-up cost of automated assembly
, I could reduce the price of the modules quite a bit, and even use the 2MB BGAs. As it is, my last volume purchase of 10ns 5V 512Kx8 SRAM ICs came out to less than a third as much as my first purchase almost five years ago (and they're genuine Cypress parts, from Cypress distributor in the U.S.), so the current price for fully-populated modules is $69.
With 90° pins, so the module goes perpendicular to the motherboard:
with straight pins, so the module goes parallel to the motherboard:
except if you order this way, you'll get gold-plated pins, not tin-plated. You'll get this one:
- StraightPinHeader.jpg (49.44 KiB) Viewed 1144 times
Here's the bare board, to show the size:
- WM-1PCBinHand.jpg (29.15 KiB) Viewed 1144 times
