The Suburban Chicago Atarians (S.C.A.T.) is represented on the Pooldisk with a couple hundred disks from their public domain library. As with much of the Pooldisk, there is some identifiable bitrot in a small number of the disks. In particular, checking the file integrity found four disks with simple single empty sector in the chain.

• 039.atr: Sector 217 empty (CREAPCAV.BAS). I found this game also on Thumpnugget's ANTIC disk archive, so we'll use that to fix it.
• 056.atr: Sector 17 empty (DOS.SYS). The DOS is damaged, we can fix it using the DOS from another disk.
• 094_b.atr. Sector 634 empty (STARTUP.BAS). The menu program is damaged, we can fix it using the menu on 095.atr.
• 101.atr: Sector 351 empty (SPECIAL0.DEL). The sector missing looks like it should be all zeros, which I confirmed after finding the same file on Bellcom disk 218.

The fixes are all a simple application of the tool we developed in earlier posts:

c:atr.pl -copy "..\..\mag\Antic\Antic Vol 3-04 1984-08 S1 Lucasfilm New Games.atr" 039.atr 499 217 1
c:atr.pl -copy 057_a.atr 056.atr 17 17 0
c:atr.pl -copy 095.atr 094_b.atr 595 634 1
c:atr.pl -copy 101.atr 101.atr 351 351 1