Bug fixes: - v1.0 - November 1991 Big bug here! Fixed in 2.0 ------------------------------ - v2.0 - February 1992 There was a BIG mistake in the schematic. The top three address lines were REVERSED when going to the 74ls138. It should have been A23 - 1 A22 - B A21 - A . This has been changed in the new schematics. My thanks to Jason Goga for pointing that out -------------- I have also been told that 256k x 1 DRAM chips will also work on this project. My memory data book doesn't have full specs on the 256x1, so I canot verify this. Use them at your own risk.