IIRC, IBM liked to refer to them as planar boards...
On Thu, Oct 15, 2015 at 2:34 PM, Mark Linimon <linimon at lonesome.com> wrote:
On Thu, Oct 15, 2015 at 10:18:46AM -0700, Fred Cisin
wrote:
Wasn't the B5900 from 1980?
Hmm. I guess my mind put "B5500" for "B5900".
mcl