Tim Walls <tim.walls@pa.press.net>  wrote:
 > Looks quite interesting - does anyone have any experience of actually
 > buying/using their stuff (esp. w/NetBSD!!)  A new motherboard would
 > do my poor old Classic no harm at all (hell, it might even be able to
 > manage a web browser with the 170MHz Sparc in it ;-)
 > 
 > Couldn't get their online store to work though, so dunno about 
 > the prices...
 > 
 > On Thursday, May 3, 2001, at 03:33 PM, Darren Reed wrote:
 > >
 > > http://www.cyclecc.com/specs/html/5turbomods_ds.htm
 > >


One of my desktop machines at work is an old SS2 chassis with an older
one of these boards in it.  I've had it for quite some time:

NetBSD 1.4.1 (GENERIC) #1: Mon Aug  9 02:29:47 PDT 1999
    mrg@sun4690:/work/tmp/mrg/src/sys/arch/sparc/compile/GENERIC
real mem = 100253696
avail mem = 90312704
using 1223 buffers containing 5009408 bytes of memory
bootpath: /iommu@0,10000000/sbus@0,10001000/espdma@4,8400000/esp@4,8800000/sd@3,0
mainbus0 (root): SUNW,SPARCstation-5
cpu0 at mainbus0: MB86904 @ 85 MHz, on-chip FPU
cpu0: 16K instruction (32 b/l), 8K data (16 b/l): cache enabled