On Fri, May 16, 2025, 21:49 Warner Losh <[email protected]> wrote: > > > On Fri, May 16, 2025, 7:33 PM Henry Bent via cctalk <[email protected]> > wrote: > >> On Fri, 16 May 2025 at 20:33, Jonathan Stone via cctalk < >> [email protected]> wrote: >> >> > >> > However a pure Q22/Q22 backplane will not support any Microvax II or III >> > memory cards, as they use CD slots as part of the Private Memory >> > Interconnect (PMI) to the CPU. You could run a KA630 with just the 1MB >> on >> > the CPU board; but it'd be even more constrained than a microvax >> > 2000/vaxstation 2000 with just the 2MB onboard memory. >> >> >> Does anyone know what the reasoning behind the 1MB on the KA630 board was? >> Just enough for a realtime application, maybe, or a single tinkerer? I >> can't see running much of anything serious in 1MB on a uVAX II in 1985 if >> you were really trying to take advantage of the hardware, so I wonder if >> the idea was that the board would have other applications. >> > > VAX eln realtime applications? > > Warner >
Yeah, I always forget that that existed. I kind of get the sense that everyone else did too. Did it get any real market penetration? -Henry >
