In March 1995, the 1.2 kernel was released. This release did not offer
nearly the same improvement in functionality as the 1.0 release, but it did
support a much wider variety of hardware, including the new PCI hardware
bus architecture. Developers added another PC-specific feature-support for
the 80386 CPU's virtual8086 mode-to allow emulation of the DOS operating
system for PC computers. They also updated the networking stack to provide
support for the IPX protocol and made the IP implementation more complete
by including accounting and firewalling functionality.