At 04:18 PM 3/4/2009, you wrote: >Gene Heskett wrote: > >>Since the 16550 needs a 16 wide group of register addresses, which >>would displace 4 regular packs from the coco's address space, I >>wonder how that was handled? > >The 16550 only needs 8 bytes of addressing... ONLY 8 ? Wow. :) -- Roger Taylor http://www.wordofthedayonline.com