I'm sure this has been posted, but I haven't seen it: Is the 2Meg RAM expansion board the same as the 0.5Meg, just incompletely populated? Or having different size RAM? Is a conversion a matter of adding more RAM, or a jumper change too? Are there other versions available as well? Thanks in advance. G. Mark Stewart ATT-BTL Naperville, ix1g266 ixlpq!gms 979-0914