I wonder if... - Arkanoid single-load/128K

[Steve Nickolas <usotsuki@buric.co>]

OK, I'm looking at Arkanoid.  No idea if it has to hit the disk for 
anything but level data.

Analyzing ARKEDIT, it looks like Arkanoid's 32 main levels are stored one 
to a sector (like Lode Runner), but only use every other sector on disk? 
If so, then the data for the levels only takes 8K...

*If* that's the only thing the game hits the drive for...

1. At startup, DC00-DDFF on both banks, and E000-EDFF are used.  The last 
three words of the ramcard point to $0200, which when hit with the LC 
active, resets the game.

2. The 0700-07FF page does not appear to be touched.  0D00-0FFF are not 
initially used either.

3. Both HGR screens can be used as holding tanks.

4. Initially, at least, A800-A8FF is zeroed.

5. A fragment of source code is found from A9D7-AEFF.

6. AF00-AFFF is also initially zeroed.

7. BD00-BDFF is initially untouched.

So I suppose a relocator for the base code could move:

   0200 <- 0D00
   0300 <- 0E00
   0400 <- 0F00
   0500 <- A800
   0600 <- AF00
   DC00' < AA00 (alternate page)
   DD00' < AB00
   DC00 <- AC00
   DD00 <- AD00

   E000.EFFF <- 2000
   Relocator <- 3000.3FFF
   Level data <- 4000 (leaving extra room)

And then the level data, I suppose, could be stored in the //e's memory. 
I don't know if this would work in practice, but if it could, the data 
would then locate from 07FD-BFFF, and then be compressed to a single file.

If it uses more, I can only hope that whatever is left can be stuffed in 
holes and then paged in and out of the auxmem...

-uso.