SunOS 4.0.3

It looks like the last version of SunOS that I can run on a Sun 1/100U is version 4.0.3, however i'm not sure if I have enough ram to use that version. It looks like I can only add 2 ram boards, and all I have are 1Meg ram boards... Does anyone have 4.0.3 that they could supply to me in some form? Or is there a better alternative for sun 2's with low ram (sun 1/100U is apparently very hardware equivalent to the earliest sun 2's, at least run acceptably from a sun with 2Meg of ram. The Sun 1/100U does not have any way to connect peripherals such as hard drives, so the unit will have to be booted from the network. I guess its almost time for me to brush up on tftp protocol, assuming I can find some OS to run on this computer. I dont suppose anyone has a sun multibus 4Meg memory board they would be willing to trade? -Lawrence LeMay lemay(a)cs.umn.edu