[comp.sys.amiga.hardware] 68020/881 accelerator board ???'s

LEIF@SLACVM.SLAC.STANFORD.EDU (05/15/91)

I just acquired, and managed to stuff into my Amiga 2000, a CSA "724" model
68020/881 "Adaptor" board (vintage 1983!).  I have a couple of questions
about this board, and cpu boards in general, if anyone knows/cares to reply.

1. After installing this board, testing it with various programs and noticing
   some apparant increace in speed, I wonder, is there a utility which can
   determine the clock speed at which the CPU is currently running?

2. Running SetCPU with no arguments returns your CPU configuration.  When I
   do this, SetCPU tells me I have a 68020/68881, but also tells me that it
   detects a "FPU logic error".  What would cause this?

I realize that putting a CPU board made in 1983 into a computer not produced
(even the 1000 model) until 1985 is taking somewhat of a chance, but the
results so far have been ok.  Most stuff runs, and I can detect some increace
in speed for at least a couple of programs.  I would really like to know if
this thing is running at some faster clock speed than a stock amiga, though
(the '020 is rated at 12MHz, the '881 at 16MHz).  Any information duly
appreciated!  Later...
Leif Johnson                                      leif@slacvm.slac.stanford.edu