17 Nov
2019
17 Nov
'19
5:59 a.m.
>> *What
it is:*
>> In case you forgot: UniBone is a plugin board to DEC PDP-11 UNIBUS
>> systems containing a BeagleBone Black.
>>
>> See http://retrocmp.com/projects/unibone.
Is it possible to get it as a "kit+" where the SMD components only are already
soldered onto
the bare board, but all the rest left for those who are ok with a normal soldering iron
but
not confident on doing the SMD? 
18 Nov
18 Nov
9:10 a.m.
On Nov 17, 2019, at 7:59 AM, J?rg Hoppe via cctech
<cctech at classiccmp.org> wrote:
Yes, can (get a kit with SMT work done)
OK, that?s the answer I needed; If I want to put one of these in a KS10, can the parity
lines be hacked from the software (the KS10 uses them as two extra data bits) or are they
hard-wired to parity?
19 Nov
19 Nov
5:39 a.m.
Ah. Another solution to the fabled "MASSBUS" to anything adapter?
Putting it in at the RH11-C level would remove a fair bit of complexity,
then you could simply emulate all the Massbuss insanity through the
relatively simple registers that an RH11 uses....
I wouldn't mind having eight RP06's on a card inside my 2020. Then it
could truly be called a KS (as in Kloset)10......
C
OK, that?s the answer I needed; If I want to put one
of these in a KS10, can the parity lines be hacked from the software (the KS10 uses them
as two extra data bits) or are they hard-wired to parity?
8:07 a.m.
On Nov 19, 2019, at 7:39 AM, Chris Zach via cctech
<cctech at classiccmp.org> wrote:
Ah. Another solution to the fabled "MASSBUS" to anything adapter? Putting it in
at the RH11-C level would remove a fair bit of complexity, then you could simply emulate
all the Massbuss insanity through the relatively simple registers that an RH11 uses....
That?s the plan; That and getting a Chaosnet so I can connect my CADR to my KS10 when I
get them both working at the same time.
4:53 p.m.
On Tue, Nov 19, 2019 at 2:26 PM Daniel Seagraves via cctalk <
cctalk at classiccmp.org> wrote:
I had plans to do an RH11 emulation, I can move it up in the stack (though
it won't be until early next year), and when Joerg's able to provide 18-bit
support we can start testing it on 36-bit machines...
- Josh
On Nov 19,
2019, at 7:39 AM, Chris Zach via cctech <
cctech at classiccmp.org> wrote:
Ah. Another solution to the fabled "MASSBUS" to anything adapter?
Putting it in at the RH11-C level would remove a fair bit of complexity,
then you could simply emulate all the Massbuss insanity through the
relatively simple registers that an RH11 uses....
That?s the plan; That and getting a Chaosnet so I can connect my CADR to
my KS10 when I get them both working at the same time.
4:59 p.m.
Whelp, if you're planning on doing this early next year I'll start
dragging the KS10 box out of storage and cleaning it off. If you sell
the boards let me know so I can buy one and support your efforts.
CZ
On 11/19/2019 7:53 PM, Josh Dersch wrote:
On Tue, Nov 19, 2019 at 2:26 PM Daniel Seagraves via cctalk
<cctalk at classiccmp.org <mailto:cctalk at classiccmp.org>> wrote:
On Nov 19, 2019, at 7:39 AM, Chris Zach via
cctech
<cctech at classiccmp.org <mailto:cctech at classiccmp.org>>
wrote:
Ah. Another solution to the fabled "MASSBUS" to anything adapter?
Putting it in at the RH11-C level would remove a fair bit of
complexity, then you could simply emulate all the Massbuss insanity
through the relatively simple registers that an RH11 uses....
That?s the plan; That and getting a Chaosnet so I can connect my
CADR to my KS10 when I get them both working at the same time.
I had plans to do an RH11 emulation, I can move it up in the stack
(though it won't be until early next year), and when Joerg's able to
provide 18-bit support we can start testing?it on 36-bit machines...
- Josh
7:35 p.m.
On Tue, Nov 19, 2019 at 4:59 PM Chris Zach <cz at alembic.crystel.com> wrote:
Whelp, if you're planning on doing this early next
year I'll start
dragging the KS10 box out of storage and cleaning it off. If you sell
the boards let me know so I can buy one and support your efforts.
Joerg is the one building and selling the board, I'm just a
satisfied customer who's also been hacking new device support into it.
I'll keep y'all posted as to when I make progress on this.
Also if anyone has a KS they could, uh, "lend" me it sure would speed up
the development process and I'm sure you'd eventually get it back someday.
(Kidding.)
- Josh
(Not really kidding.)
CZ
On 11/19/2019 7:53 PM, Josh Dersch wrote:
On Tue, Nov 19, 2019 at 2:26 PM Daniel Seagraves via cctalk
<cctalk at classiccmp.org <mailto:cctalk at classiccmp.org>> wrote:
On Nov 19, 2019, at 7:39 AM, Chris Zach via
cctech
<cctech at classiccmp.org <mailto:cctech at classiccmp.org>>
wrote:
Ah. Another solution to the fabled "MASSBUS" to anything adapter?
Putting it in at the RH11-C level would remove a fair bit of
complexity, then you could simply emulate all the Massbuss insanity
through the relatively simple registers that an RH11 uses....
That?s the plan; That and getting a Chaosnet so I can connect my
CADR to my KS10 when I get them both working at the same time.
I had plans to do an RH11 emulation, I can move it up in the stack
(though it won't be until early next year), and when Joerg's able to
provide 18-bit support we can start testing it on 36-bit machines...
- Josh
20 Nov
20 Nov
7:20 a.m.
On Nov 19, 2019, at 9:35 PM, Josh Dersch <derschjo
at gmail.com> wrote:
Joerg is the one building and selling the board, I'm just a satisfied customer
who's also been hacking new device support into it. I'll keep y'all posted as
to when I make progress on this.
Also if anyone has a KS they could, uh, "lend" me it sure would speed up the
development process and I'm sure you'd eventually get it back someday.
(Kidding.)
Well, I was expecting to have to do all of the work myself. There?s still the problem of
the disk Unibus itself to solve - the disk UBA doesn?t terminate into a normal Unibus. It
goes into the disk RH11 directly, and the bus is terminated on the far end of the RH11.
I?d either have to buy another Unibus backplane to plug the Unibone into, or find a way to
plug the cables from the UBA directly into the Unibone. This still leaves the issue of
terminating the bus. The ideal scenario would be if the first slot of a RH11 (where the
bus jumper comes in) can accommodate the (quad card) Unibone without issues, the rest of
the RH11 boards can simply be pulled without breaking bus continuity, and the normal
terminator in the far slot can be used. I haven?t looked at any prints or anything yet.
The ?second? Unibus is otherwise normal.
8:37 a.m.
Well, I was expecting to have to do all of the work
myself. There?s still the problem of the disk Unibus itself to solve - the disk UBA
doesn?t terminate into a normal Unibus. It goes into the disk RH11 directly, and the bus
is terminated on the far end of the RH11. I?d either have to buy another Unibus backplane
to plug the Unibone into, or find a way to plug the cables from the UBA directly into the
Unibone. This still leaves the issue of terminating the bus. The ideal scenario would be
if the first slot of a RH11 (where the bus jumper comes in) can accommodate the (quad
card) Unibone without issues, the rest of the RH11 boards can simply be pulled without
breaking bus continuity, and the normal terminator in the far slot can be used. I haven?t
looked at any prints or anything yet.
Right, there were two unibus ports on a 2020: The first one went to the
RH11-C and was very odd in that "Hog Mode DMA" was enabled to allow the
device to just stream data as much as it wanted to the controller. This
would mean that other devices on the bus would time out and not have
their interrupts serviced, but since the RH11 was the only thing it
didn't matter (and I think this is why you could use RM03's instead of
RM02's: The whole track could be read and buffered to the 2020's UBA
controller in one shot. That would have to be programmed into the BBB
software to ignore the 16 word DMA limits and go as fast as the drive
can go).
So you would need two BA11's, one for the RH11C and one for the DZ11's
and other unibus "stuff". *however* I seem to recall that the RH11C
included a full length unibus slot after the boards, so maybe you could
pull the RH11 boards and plug the BBB board into the end of the RH11C....
Gotta drag this stuff out and take a look. Oh and RD54's are *slow*
compared to ESDI disks and controllers. Ouchies!
C
9:34 a.m.
On Nov 20, 2019, at 10:37 AM, Chris Zach via cctalk
<cctalk at classiccmp.org> wrote:
Gotta drag this stuff out and take a look. Oh and RD54's are *slow* compared to ESDI
disks and controllers. Ouchies!
Can?t be worse than my original plan, which was to use a Viking SCSI controller and hack
all the things to support it. Bit fiddling happened in the driver, in exec mode. I
actually had a hacked standalone DSKDMP that knew how to format ?packs? on it, but it was
so dog slow I never bothered writing a timesharing driver for it, instead waiting until
someone came up with a better solution.
23 Nov
23 Nov
12:55 p.m.
This thread makes me very happy.
I have a KS10 that I'm working on (quite slowly). The PSU is checked out
and working. Then console seems to work, I can deposit/examine to CRAM
and RAM.
Next step will be to load micro code and I've been mentally preparing to
tackle an RH11 emulator for the Unibone.
I'll buy one from Joerg as soon as the second batch is ready and me and
my KS10 will happily be guinea pigs.
And if I can, I'll help with development.
Regards,
Pontus.
1629
days inactive
1635
days old
10 comments
5 participants
participants (5)
-
cz＠alembic.crystel.com -
derschjo＠gmail.com -
dseagrav＠lunar-tokyo.net -
j_hoppe＠t-online.de -
pontus＠Update.UU.SE