Re: AlphaServer ES47 partitioning

2022-02-13 Thread Huw Davies via cctalk
It’s been a very long time since I partitioned an ES47/GS80 (would have been whilst I worked for Compaq prior to the HP takeover) but ISTR that the reason for the 2P rule was that you couldn’t partition the memory subsystems within a dynamic duo. It’s been a long time and I no longer have

AlphaServer ES47 partitioning

2022-02-13 Thread Ben Huntsman via cctalk
Hey guys- Anyone on here know much about the Marvel boxes? I've had one for years but never had much time to fiddle with it. I'm looking at the partitioning features. In particular, the manual says: Hard partitions must be on 2P boundaries Tru64 only supports hard partitions However,

RE: DEC AXV11-C analog board

2022-02-13 Thread Henk Gooijen via cctalk
Two batteries in series, using the “middle” as 0V reference. The “+” is V+, the “-“ is V-. Van: Douglas Taylor via cctalk Verzonden: zondag 13 februari 2022 18:05 Aan: Jon Elson via cctalk Onderwerp: Re: DEC AXV11-C analog board Is it

Re: More switchmode power supply grief - Cisco IGS router

2022-02-13 Thread Maciej W. Rozycki via cctalk
On Sun, 6 Feb 2022, Peter Coghlan via cctalk wrote: > > NB Mouser has the MAP80-4000G in stock actually, so if all else fails and > > you are determined to get the IGS running, you can pick a brand new one: > > . > > > > Thanks again

Re: DEC AXV11-C analog board

2022-02-13 Thread Brent Hilpert via cctalk
On 2022-Feb-13, at 9:04 AM, Douglas Taylor via cctalk wrote: > Stopped fooling with the AXV11 for now. Applied various voltages to the Data > Translation input and recorded the A/D octal values to get an idea of what > the calibration of the board is. It looks very linear, +/-10v range. > >

Re: DEC AXV11-C analog board

2022-02-13 Thread Chris Zach via cctalk
This is a really interesting thread, I have this darn AF01 A/D converter for a negative bus pdp8 and your issues and methods with testing would work well for testing this thing. Bonus it does appear to have a 16 or 64 channel mux capability. Question: Is it possible to change the driver

Re: DEC AXV11-C analog board

2022-02-13 Thread Douglas Taylor via cctalk
On 2/8/2022 7:36 PM, Jon Elson via cctalk wrote: On 2/8/22 16:35, Douglas Taylor via cctalk wrote: On 2/8/2022 5:22 PM, Jon Elson via cctalk wrote: On 2/8/22 13:34, Douglas Taylor via cctalk wrote: Update on this:  I did put together a battery and voltage divider to test the AXV11.  The label