[cctalk] Re: H7819-AA / VAXstation 4000/90 and 4000/96
Hi!
On Mon, 2023-06-26 20:06:08 +0200, Jan-Benedict Glaw via cctalk
wrote:
> Just added a PiSCSI, uploaded a NetBSD ISO image, configured a 2 GB
> HDD and fired up again:
>
>
> >>> sh conf
>
> KA49-A V1.0-006-V4.0
> 08-00-2B-35-5D-DF
> 128MB
>
> DEVNBRDEVNAM INFO
> ----
> 1 NVR?? 001 0016
> 3 DZOK
> 4 CACHEOK
> 5 MEMOK
> 128MB 0A,0B,0C,0D=16MB, 1E,1F,1G,1H=16MB
> 6 FPUOK
> 7 ITOK
> 8 SYSOK
> 9 NIOK
> 10SCSIOK
> 1-RZ28M 3-SCSI6-INITR
> 11 AUDOK
>
> >>> sh dev
>
> VMS/VMB ADDR DEVTYPENUMBYTES RM/FXWPDEVNAM
> REV
> --- --- -----
> ---
> EZA0 08-00-2B-35-5D-DF
> DKA100 A/1/0 DISK 2.10GB FXRZ28M
> 0568
> DKA300 A/3/0 RODISK 370.80MB RM WPSCSI
> 2304
> ..HostID..A/6 INITR
Just for the record: I tried booting with "b dka3" and failed.
However, writing the full device name as shown ("b dka300") works like
a charm! So this 4000/90 (with its old V1.0 ROM) is now up'n'running
with a patched DS1287 and a simulated disk. That setup should allow me
to easily automate NetBSD testing and maybe do some first steps with
VMS. (Any good introduction material? I've never used VMS.)
MfG, JBG
--
[cctalk] Re: H7819-AA / VAXstation 4000/90 and 4000/96
Hi Tony! On Mon, 2023-06-26 15:45:14 +0100, Tony Duell wrote: > On Mon, Jun 26, 2023 at 3:38 PM Jan-Benedict Glaw via cctalk > wrote: > > As I'm preparing to setup my old hardware, I fetched two VAXstations > > (4000/90 and /96) from storage and cleaned one of them throughoutly. > > > > Then I gave power (to both of them), but both won't really start: > > all 8 diag LEDs are on (--> power available but CPU didn't start > > executing instructions.) > > > > I took the PSU (from the cleaned /90), a DEC H7819-AA, and measured > > it. Unfortunately I didn't find pinouts or schematics at a first > > search. The plate states that there should be 3.3V, 5V, 12V, -12V and > > -9V. I found most of that: > > > > > > +--+ > > |o | > > | DEC H7819-AA PSU 10 +---+ 1 | > > | (view at the bottom side) | | | > > | | | | > > | | | | > > | 18 +---+ 9 | > > |o | > > |+---++---+| > > || Fan || Fan || > > ++---++---++ > > > > With above pin numbering, this is what I could find / measure / deduce: > > > > 3V3 brown 10 1 blue12V > > 3V3 brown 11 2 black GND > > GND black 12 3 red 5V > > GND black 13 4 red 5V > > GND black 14 5 black GND > >5V red 15 6 black GND > >5V red 16 7 white -12V > >5V red 17 8 blue (0.78V) > >(4.91V) lilac 18 9 brown (-1.65V) > > > > Most values look plausible, except those three in parentheses. At > > least one of them should probably be -9V wrt. GND I guess, but that's > > totally absent. And what's the other two? (If I got the colors wrong: > > Please forgive, I'm red-green blind.) That could be some "power-okay" > > indicator, or external switch-off? > > I don't know this machine at all (too modern :-)) but that -9V sounds > at thought it might be for an internal ethernet transceiver. Now an > ethernet transceiver is supposed to be isolated from ground and one > way of helping with that is to have a totally isolated 9V output on > the power supply with its own 'ground', not connected to the ground > for the rest of the supplies. > > Using a high impedence voltmeter like most DMMs, you'd see random > noise voltages on those 2 lines wrt the normal ground. > > What voltage do you measure between the suspect blue and brown wires? > Connect your meter between them, not to the black ground and something > else. Did that any you're totally right here: Using pin 8 (blue) as GND, pin 9 (brown) becomes -9V. Just the lila wire remaining as a mystery. HOWEVER! A Polish friend suggested that even with all LEDs lit (which is as severe as it gets), it might just be a dead RTC chip. I dremel'd it open and soldered some wires, added a battery (not yet with a proper battery clip) and ... it started up. So I learned something about the PSU (--> most of its external pinout), the usage of -9V for ethernet (would never guessed that!) and that the stupid battery-backed RAM may completely kill a machine. Just added a PiSCSI, uploaded a NetBSD ISO image, configured a 2 GB HDD and fired up again: >>> sh conf KA49-A V1.0-006-V4.0 08-00-2B-35-5D-DF 128MB DEVNBRDEVNAM INFO ---- 1 NVR?? 001 0016 3 DZOK 4 CACHEOK 5 MEMOK 128MB 0A,0B,0C,0D=16MB, 1E,1F,1G,1H=16MB 6 FPUOK 7 ITOK 8 SYSOK 9 NIOK 10SCSIOK 1-RZ28M 3-SCSI6-INITR 11 AUDOK >>> sh dev VMS/VMB ADDR DEVTYPENUMBYTES RM/FXWPDEVNAM REV --- --- ----- --- EZA0 08-00-2B-35-5D-DF DKA100 A/1/0 DISK 2.10GB FXRZ28M 0568 DKA300 A/3/0 RODISK 370.80MB RM WPSCSI2304 ..HostID..A/6 INITR Thanks for the help! MfG, JBG --
[cctalk] Re: H7819-AA / VAXstation 4000/90 and 4000/96
On Mon, Jun 26, 2023 at 3:38 PM Jan-Benedict Glaw via cctalk wrote: > > Hi! > > As I'm preparing to setup my old hardware, I fetched two VAXstations > (4000/90 and /96) from storage and cleaned one of them throughoutly. > > Then I gave power (to both of them), but both won't really start: > all 8 diag LEDs are on (--> power available but CPU didn't start > executing instructions.) > > I took the PSU (from the cleaned /90), a DEC H7819-AA, and measured > it. Unfortunately I didn't find pinouts or schematics at a first > search. The plate states that there should be 3.3V, 5V, 12V, -12V and > -9V. I found most of that: > > > +--+ > |o | > | DEC H7819-AA PSU 10 +---+ 1 | > | (view at the bottom side) | | | > | | | | > | | | | > | 18 +---+ 9 | > |o | > |+---++---+| > || Fan || Fan || > ++---++---++ > > With above pin numbering, this is what I could find / measure / deduce: > > 3V3 brown 10 1 blue12V > 3V3 brown 11 2 black GND > GND black 12 3 red 5V > GND black 13 4 red 5V > GND black 14 5 black GND >5V red 15 6 black GND >5V red 16 7 white -12V >5V red 17 8 blue (0.78V) >(4.91V) lilac 18 9 brown (-1.65V) > > Most values look plausible, except those three in parentheses. At > least one of them should probably be -9V wrt. GND I guess, but that's > totally absent. And what's the other two? (If I got the colors wrong: > Please forgive, I'm red-green blind.) That could be some "power-okay" > indicator, or external switch-off? I don't know this machine at all (too modern :-)) but that -9V sounds at thought it might be for an internal ethernet transceiver. Now an ethernet transceiver is supposed to be isolated from ground and one way of helping with that is to have a totally isolated 9V output on the power supply with its own 'ground', not connected to the ground for the rest of the supplies. Using a high impedence voltmeter like most DMMs, you'd see random noise voltages on those 2 lines wrt the normal ground. What voltage do you measure between the suspect blue and brown wires? Connect your meter between them, not to the black ground and something else. -tony 'There is no such thing as ground' -- Don Vonada
