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. -Henry
