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 >
