FPGAs, unobtanium and FPJ11s
pete at dunnington.plus.com
Fri Nov 24 08:23:26 CST 2006
On 24/11/2006 13:13, Gordon JC Pearce wrote:
> The thought occurred to me that it might be nice to have the
> floating-point option in my PDP-11/73. Since I haven't got one, and
> don't fancy paying the $500 or so that some online sellers seem to be
> asking (do they really expect to sell *any*, never mind at that price?),
> I was wondering how easy it would be to implement in an FPGA as was
> discussed at length earlier in the week.
> Feasible, or a complete waste of time?
Is your 11/73 a KDJ11-A or KDJ11-B? If the former, it may not be
compatible with the floating point hardware anyway (M8192 without a YA
or YC suffix). Some early 15MHz KDJ11-B boards aren't either.
Pete Peter Turnbull
University of York
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