For all those who have asked today...
Yes, I am writing a Z80 assembler, the final plan is to have something eating suitably parenthesized assembler and emitting data files suitable for loading straight into Speccy emulators (I found at least one file format that was just what I wanted).
For those who feel encouraged to ask, when it is finished it will be ASDF-install able and somewhere on CLiki.
Estimated time of "being finished" is sometime after my wedding, until then assorted other things have (understandably) priority.
