My note in the DEC VCF forum might give you some more background. https://forum.vcfed.org/index.php?threads/real-time-clock-card-gtsc306a-adding-calender.71542/ https://bitsavers.trailing-edge.com/pdf/gtsc/979-0021-306_GTSC306_Sep88.pdf
The DEC KWV-11 is designed to support analog and digital acquisition boards. See EK-ADV11-OP-002 ADV11-A, KWV11-A, AAV11-A, DRV11 User's Manual.pdf. On Sat, May 3, 2025 at 9:18 PM Ethan Dicks via cctalk <cctalk@classiccmp.org> wrote: > On Sat, May 3, 2025 at 12:08 PM Christopher Zach via cctalk > <cctalk@classiccmp.org> wrote: > > Interesting. I have one does it emulate a kw11? Can it keep the date and > time between reboots? > > I think it's a KWV11 plus an RTC. That MicroPDP-11/53 came with > MicroRSX-11 and there was a program for reading the RTC. It complains > when I boot it up and the board is missing. > > It shouldn't be impossible to figure out how it all works and write a > program for RT-11 or possibly 2BSD to read the time. > > Oh... there are product variants for how much of the board is > populated. I think mine is "RTC only". > > -ethan > -- j...@ieee.org
