(gns simulates the necessary components of ASA, I personally tested it, and there are documentation provided at the same time.
238hacktools\FLASH animation channel appreciation.url
238hacktools\Technical Article Center.url
238hacktools\download site.url
238hacktools\download station Cngr description.txt
238hacktools\Related Instructions.htm
asa802-k8.bin.unpacked.initrd
asa802-k8.bin.unpacked.vmlinuz
.....)