Bootconf file structure:
32 bytes :  system name filled up with spaces to 32 characters
1 byte   :  divIDE RAM page number
10 bytes :  name of the file that belongs to that page, file extension is .B
If there's another file, previous 11 bytes are repeated.

The end of one system is marked by next byte. Meaning of the byte is:
7.bit: end of one system
6.bit: layout: set is 16k paging, not set is 8k paging
bit 5-2: without meaning
bit 0 and 1: starting page. Many operating systems start with page 0, SIF Beta starts with 2nd page.

If there's another system present, the complete structure repeats 
(i.e. 32 bytes of the system name etc.)

The bootconf is terminated by byte value of 0.