On Mon, Jul 30, 2012 at 10:52 AM, Robert Layten wrote: I know this is a CoCo forum, but if anyone would know, I would guess > someone on here would. Is there anywhere that I can get the 128k upgrade > for the TRS-80 model 4? > www.classiccmp.org/dunfield/trs80/m4memory.pdf -- RP