Re: Apple II cassettes by Brutal Deluxe Software

[schmidtd <schmidtd@my-deja.com>]

On Jan 15, 8:08 am, spacealbum <dbackenkoeh...@t-online.de> wrote:
> Dear cassette fans,
>
> thanks for this great project!

Seconded!

> [...]
> Furthermore I have a question regarding Bob Bishops "Star War" by
> POWERSOFT in Antoines archive. I tried to get this version running,
> because for a while now I'm putting together a disk with the various
> programs by Bob but I couldn't figure out what to do with the two
> resulting machine language programs. Could anybody help me putting
> together an appropriate loader?

I was poking at that as well.  The first two pieces to it are easy, as
explained cryptically on the cassette label:
4A.FFR (Read in the first chunk of data to zero page)
800.1FFFR (Read in what must be the main program)
I used CiderPress to pull out those hunks of data, and put them on a
disk image.  Since DOS is likely fooling around with the zero page
(and Bob liked to make liberal use of ZP as well), I tried loading the
first hunk in to $204a-$20ff, then loaded up the $800 hunk, then moved
the $204a hunk back down to $4f.  The $800 entry point just returns
quickly, so I'm not sure if there's a different entry point expected,
or if there's some other behaviors it's depending on.  I haven't
bothered reading the code yet. ;-)