[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Stepping through Rocky's Boots (to possibly P8 it)
Followup.
I couldn't decipher the rest of the code, so I trapped the program at its
entry point, and then pored over the hex dump. Found that there were a
couple files being moved over DOS. (Aha, so that's why it needs to PR#6!)
At least this phase does have some free RAM. If every phase has at least
256 bytes I can use that space for paging the $BF00.BFFF memory area. If
not, well, I can only hope no Selector uses the DF00.DFFF memory area...
(The standard ProDOS-8 1.0-1.8 Selectors and Selextra do not. I don't
know how big the 1.9 and 2.0 Selectors are, or the ProDOS-16 or GS/OS exit
code, if I would be stepping on anything by using that 256-byte area.)
By the way, my replacement for ATTRACT LOAD.NE.O is 408 bytes smaller (321
vs. 729) than the original.
-uso.