The Page 6 Issue Disks are an excellent collection of Atari software you can find at http://page6.org. The integrity of the disks is generally good, but I've found some disks with issues. Issue Disk 55A in particular is badly damaged, but we can try to at least partly fix it.

Sectors 232-235 and 642-706 are marked in the VTOC as free (and are empty on the disk), but they shouldn't be, and this damages some of the files:

• 232-235: INTRO.DAT. Let's just fix the sector links for now.
• 642-678: SPACE.OBJ: The shareware game GAUNTLET, we can restore this from a number of places.
• 679: MENU. The last bits of the MENU program have been lost.
• 680-692: MIDI: We can fix the links.
• 693-706: MIDI.TXT: Let's just fix the links.

Restoring the MENU program is possible with some cleverness. Similar menu programs end with DATA statements description,filename, and it appears we've cut off the word "SPACE GAUNT", so let's finish the file off with "LET,SPACE.OBJ" and a line 32768 which we normally find. That means we need to put the following bytes:

015310: SECTOR: 679: FILE:
     0  4c 45 54 2c 53 50 41 43-45 2e 4f 42 4a 9b 00 80   LET,SPACE.OBJ...
    10  0e 0e 19 0f 06 44 3a 4d-45 4e 55 16 .. .. .. ..   .....D:MENU.....