These 3 files are atari 2600 game cartridges.
From IBM PCJr
Pitfall II - Lost Caverns (1984)(Activision).jrc" size="10495" crc="097ce7ad" md5="6d842c96d5a01967be9680080dd5be54" sha1="920cfbd517764ad3fa6a7425c031bd72dc7d927c"
From Atari 8bit - Games - [BIN] (TOSEC-v2014-10-30_CM)
Gyruss (1984)(Parker Brothers)(CA).bin" size="8192" crc="0d78e8a9" md5="b311ab95e85bc0162308390728a7361d" sha1="4bd87ba8b3b6d7850e3ea41b4d494c3b12659f27"
Gyruss (1984)(Parker Brothers)(EU)(PAL).bin" size="8192" crc="ba14b37b" md5="e600f5e98a20fafa47676198efe6834d" sha1="598f710b7474ed6e4e7c13cc0294a4deba8faa87"
Bye