Having conquered, to my satisfaction, the install of an Ultimate 1MB in an 800XL, I now want to install it in a 1200XL. My very first 1200XL is in the mail as I type (so exciting!) so I'm using the "Atari 1200 XL Home Computer Field Service Manual" and various AtariAge forum posts to plan my attack.   I'm particularly grateful for the posts of Candle and Flashjazzcat that include pictures:   http://atariage.com/forums/topic/178323-ultimate1mb-preorder-starts/?p=2405659   http://atariage.c