OpenBSD/sparc 2.1 runs on the following classes of machines:
	- sun4c (e.g. the SS1, SS1+, SS2, IPC, ELC, IPX, and SLC)
	- sun4 (e.g. the 4/100, 4/200, and 4/300.   note that support
		for the 4/400 processor is incomplete)
	- sun4m (e.g. sparc classic, 4, 5, 10, and 20)

OpenBSD/sparc 2.1 does NOT run on these machines (yet):
	- Sun 4/400 (lacking support for the I/O cache, and has
			ethernet problems)
	- sun4d (e.g. sparc center 2000)
	- sun4u (e.g. Ultrasparcs)

The minimal configuration requires 4M of RAM and ~60M of disk space.
To install the entire system requires much more disk space, and to run
X or compile the system, more RAM is recommended.  (OpenBSD with 4M of
RAM feels like Solaris with 4M of RAM.) Note that until you have
around 16M of RAM, getting more RAM is more important than getting a
faster CPU.)

Supported devices include:
	sun4c and sun4m SBus video: 
		cgsix, cgthree, and bwtwo frame buffers

	sun4 video (not thoroughly tested...): 
		P4  -- on-board bwtwo, cgfour, cgsix, cgeight,
                VME -- cgtwo card

	serial ports: 
		ttya and ttyb (can be used as console if needed),
                ttyc and ttyd (Sun 4/300 only)

	ethernet: 
		on-board AMD Lance ethernet ("le0"), 
		SBus AMD Lance ethernet cards, 
		on-board Intel 82586 ethernet (ie0 on 4/100's and 4/200's), 
		VME Intel 82586 ethernet cards

	SCSI: 
		on-board "esp" SCSI controller (sun4c's, and the 4/300),
		SBus "esp" SCSI controller, 
		Sun "SUN-3"/"si" VME SCSI controller (polled mode only, slow),
		Sun "SCSI Weird"/"sw" on-board controller (4/110 only, polled)

	VME disks:
		Xylogics 7053 VME/SMD disk controller ("xd"),
		Xylogics 450/451 VME disk controller ("xy")
		[note: VME/IPI disks are not supported]

	Sun floppy disk drive on sun4c machines.

	Sun keyboard and mouse.

	sun4c audio.


Hardware the we do NOT currently support, but get many questions
about:
	multiprocessor machines (ignores other CPUs..)
	audio driver for sun4m machines
	floppy driver for sun4m machines
	interrupt driven SCSI driver for Sun 4/100's and 4/200's
        cgfourteen (SX) framebuffer
        Graphics Tower (GT) framebuffer
        Leo (ZX) framebuffer
        S24 (ss5 only) framebuffer