I helped on two 2901 projects, A parallel interpolator on a CNC controller and a Graphics engine at Metheus. Bitsavers has the docs, CO Josh.
On Tue, Sep 29, 2026 at 6:45 PM Jon Elson via cctalk <[email protected]> wrote: > > On 9/29/26 12:36, Paul Koning via cctalk wrote: > > > >> On Sep 29, 2026, at 1:22 PM, ben via cctalk <[email protected]> wrote: > >> > >> ... Like what machines other than IBM had binary and decimal computing? > > That depends. One answer is "all of them" -- because any general purpose > > computer can do both. > > > > If you meant "had machine instructions both for decimal and for binary > > arithmetic", the answer includes the PDP-11 and VAX, and I think the Intel > > 4004 had instructions used as building blocks in decimal arithmetic. > > > Anything with the bit slice 2901 or 2903 chips from AMD had > the capability to do hardware binary and packed decimal > operations. Of course, the microcode would need to have > implemented those. > > Jon >
