
So I created some nice sheets with columns with register names and space for notes. As a bonus, there's room on the top to write what is that you're working on, and sheet number in case the code you are debugging is large.
I've created one for the 6809 (of course!) and one for the Z80. 6309 and 6502 may come soon.
You can find them here: https://github.com/robcfg/assembly_debug_sheets
I hope you'll find them useful!