21 Sep
2019
21 Sep
'19
2:52 p.m.
Does anyone have AViiON AV300D or related docs? I got a pair that have bum power supplies
and I?m hoping to find something that will makes servicing them easier.
After I get them running, I?ll obviously be looking for software. And a pinout for their
unique SCSI port, though I hear they can netboot; any details about that would be useful
too.
? Chris
Sent from my iPhone
21 Sep
21 Sep
5:58 p.m.
I'm in the same boat. I have a PSU I'm trying to resurrect. And have
also discovered the SCSI pinout is not the same as the Sun 50-pin of the
same (normal) density.
I had started to layout a replacement PSU board with modern Meanwell
modules to provide the +5V and +12V bulk rails and then source some
inverting modules to provide the negatives. However it has slipped
pretty far down my priority list. I did take accurate measurements of
the PSU board for connector placement, edge dimensions, mounting
locations and sizes, etc. I also traced out the connector pins to each
rail and control signals (though haven't documented the signal meanings
yet). I can share the Eagle project if you are still interested or just
want to cross check your own work.
I had also planned on pinning out the SCSI cable. But that fell down
the priority list too.
-Alan
On 2019-09-21 17:52, Chris Hanson via cctalk wrote:
Does anyone have AViiON AV300D or related docs? I got
a pair that have
bum power supplies and I?m hoping to find something that will makes
servicing them easier.
After I get them running, I?ll obviously be looking for software. And
a pinout for their unique SCSI port, though I hear they can netboot;
any details about that would be useful too.
? Chris
Sent from my iPhone
23 Sep
23 Sep
10:39 p.m.
I?ve seen that datageneral.uk at least has a pinout for an Eclipse MV SCSI port, which
hypothetically might match the AViiON DB-50 SCSI.
In the absence of real docs though, who can say?
Can you post the AViiON AV300D power supply pinout you?ve figured out? Maybe I can power
on my system with a couple bench supplies or an ATX supply...
? Chris
24 Sep
24 Sep
7:27 a.m.
I stuck the files up here for the next few weeks as I don't have a
project page for it yet:
https://www.retrotronics.org/tmp/dgpsu
Hope this helps.
On 2019-09-24 01:39, Chris Hanson wrote:
I?ve seen that datageneral.uk at least has a pinout
for an Eclipse MV
SCSI port, which hypothetically might match the AViiON DB-50 SCSI.
In the absence of real docs though, who can say?
Can you post the AViiON AV300D power supply pinout you?ve figured out?
Maybe I can power on my system with a couple bench supplies or an ATX
supply...
? Chris
7:32 a.m.
I mean to add, that view is looking through the machine not the
connector. So with the PSU oriented in it's natural position, that is
the pinout of the solder pin tails coming up through the PSU PCB or the
face of the connector on the main board.
Also I never scoped the control pins to figure out their roles. The
board and mounting hole dimensions are in the Eagle files.
-Alan
On 2019-09-24 10:27, alan--- via cctalk wrote:
I stuck the files up here for the next few weeks as I
don't have a
project page for it yet:
https://www.retrotronics.org/tmp/dgpsu
Hope this helps.
On 2019-09-24 01:39, Chris Hanson wrote:
> I?ve seen that datageneral.uk at least has a pinout for an Eclipse MV
> SCSI port, which hypothetically might match the AViiON DB-50 SCSI.
>
> In the absence of real docs though, who can say?
>
> Can you post the AViiON AV300D power supply pinout you?ve figured out?
> Maybe I can power on my system with a couple bench supplies or an ATX
> supply...
>
> ? Chris
11:25 a.m.
Thank you!
-- Chris
On Sep 24, 2019, at 7:32 AM, alan--- via cctalk
<cctalk at classiccmp.org> wrote:
I mean to add, that view is looking through the machine not the connector. So with the
PSU oriented in it's natural position, that is the pinout of the solder pin tails
coming up through the PSU PCB or the face of the connector on the main board.
Also I never scoped the control pins to figure out their roles. The board and mounting
hole dimensions are in the Eagle files.
-Alan
On 2019-09-24 10:27, alan--- via cctalk wrote:
> I stuck the files up here for the next few weeks as I don't have a
> project page for it yet:
> https://www.retrotronics.org/tmp/dgpsu
> Hope this helps.
> On 2019-09-24 01:39, Chris Hanson wrote:
>> I?ve seen that datageneral.uk at least has a pinout for an Eclipse MV
>> SCSI port, which hypothetically might match the AViiON DB-50 SCSI.
>> In the absence of real docs though, who can say?
>> Can you post the AViiON AV300D power supply pinout you?ve figured out?
>> Maybe I can power on my system with a couple bench supplies or an ATX
>> supply...
>> ? Chris
28 Sep
28 Sep
12:45 p.m.
One thing I?ve done is dump the ROMs in my two AV300D. They?re identical except for the
last 4 bytes, which I suspect is where their host/Ethernet ID comes from.
Unfortunately while the ROM is a JEDEC 1Mbit part, my dump doesn?t look coherent, in that
there?s no simple ASCII text like appears at boot, and the contents at 0 are not proper
88100 instructions. I expect Data General didn?t use D[7-0] on the ROM as D[7-0] ? and may
not have used A[16-0] as A[16-0] either. And since my systems have bum power supplies, I
can?t boot them and dump the ROMs that way.
Anyone have a running AV300 or AV400 system from which you could dump the ROM via SCM (the
boot monitor)? Then I could compare it with my dump and figure out how it?s wired up.
If anyone likes puzzles, here are the last 8 bytes of each system?s ROM:
$ tail -n 1 AV300-10794-01-1AFB.hex
0001fff0: ffff ffff ffff ffff 7184 f4a2 04fb 67fe
$ tail -n 1 AV300-10794-01-3163.hex
0001fff0: ffff ffff ffff ffff 7184 f4a2 9cfa f7fc
The ROMs were labeled 1AFB and 3163 respectively. If anyone can see a coherent mapping in
that, I?d be quite happy. :)
? Chris
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days inactive
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cmhanson＠eschatologist.net