hmm... probably with something like this: :) \define registers(A:"." X:"." Y:"." N:"." V:"." Z:"." C:".") Registers affected<br/>
|N ''$N$''|V ''$V$''|Z ''$Z$''|C ''$C$''| |A ''$A$''|X ''$X$''|Y ''$Y$''|| \end <<registers Z:"*" >> <<registers X:"*" >> <<registers X:"*" >> <<registers C:"*" X:"*" >> On Saturday, August 12, 2017 at 9:51:42 PM UTC-4, Charlie Hitselberger wrote: > > A while back, I put together a tiddlywiki for a Forth language I'm writing > as part of a retrocomputing project. > http://chitselb.com/files/tiddlypettil.html . This file is automatically > generated each time I build the source, and most of the tiddlers are the > Forth dictionary, with the tiddlywiki documentation for each forth word > contained in its assembler source between "#if 0" / "#endif" to make the > 6502 assembler ignore it. In the "About PETTIL" tiddler, I used the > expedient of writing. > > For Primitives, it would be useful to have a CPU register diagram > indication of which registers and flags (really just N, V, Z, and C) are > affected, and I can do it using tables, but this afternoon I did not > succeed at coming up with a scheme where I can pass in a parameter (e.g. > "*----**" to mean only A, Z and C are modified by this primitive) and > display it in a chart. Here are a few designs, not sure which one I'll > wind up using yet. > > Any help would be appreciated. > Charlie > > |''A*'' X. Y.|^- altered<br/>* result<br > />. unchanged<br/> | > |''N -'' V . ''Z *'' C > .|~| > |Z implies A=0<br/>!Z implies A!=0 |<| > > > |N ''-''|V .|Z ''*''|C .| > |A ''-''|X .|Y .|| > > |^A|^''-'' |^N|^''-'' | > |^X||^V|| > |^Y||^Z|^''*'' | > |>||^C|| > |altered|<|<| -|f > |useful|<|<| *|f > |unchanged|<|<| |f > > > > -- You received this message because you are subscribed to the Google Groups "TiddlyWiki" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/tiddlywiki. To view this discussion on the web visit https://groups.google.com/d/msgid/tiddlywiki/d237430c-f99e-47cb-a2e7-3a04bb9ac2c5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
