Re: RX01 and RL01 on same UNIBUS system

[Jon Elson via cctalk]

On 08/17/2017 03:48 PM, william degnan via cctalk wrote:

Just curious,
Is there anyone out there with a combo RX01 and RL01 on the same UNIBUS
system, today?  Are there any known issues?
As long as you set different CSR and interrupt vectors for 
the two devices, they have to work fine.
Possibly some boot ROMs might not set this up right, but you 
can always toggle in a boot program that handles it.


Jon

Re: RX01 and RL01 on same UNIBUS system

[Ethan Dicks via cctalk]

On Thu, Aug 17, 2017 at 4:48 PM, william degnan via cctech
 wrote:
> Just curious,
> Is there anyone out there with a combo RX01 and RL01 on the same UNIBUS
> system, today?

I never ran an RL01 on my RL11 (my RL01 mostly lived on my RL8A, but
sometimes ran on an RLV11 in a Qbus box).
  I've only ever run RL02s on an RL11.

> Are there any known issues?

None that I can think of.  They should be perfectly happy in the same
box.  They have different CSRs, and different vectors.  No possibility
for a conflict there.  They might be at the same BR level (have to
look - it's the wee PCB plugged into the machined pin socket), but if
so, that just matters which board is in front of the other as to who
gets interrupts first.  It's _possible_ there's a preferential order
there, but it's not a limitation I recall from the old days.

> I found a large box of RX01 disks, lucky me.  Working to get the RX01 drive
> running, experimenting.  My particular PDP 11 does not like it (11/40) but
> I think the drive is faulty, at least so far.  Much work to do.

You have an RX01 and an RX11 (M7846) not an RX211 (M8256), right?

If you have a KM11 or replica, you can use that to debug the RX01.

-ethan

RX01 and RL01 on same UNIBUS system

[william degnan via cctalk]

Just curious,
Is there anyone out there with a combo RX01 and RL01 on the same UNIBUS
system, today?  Are there any known issues?

I found a large box of RX01 disks, lucky me.  Working to get the RX01 drive
running, experimenting.  My particular PDP 11 does not like it (11/40) but
I think the drive is faulty, at least so far.  Much work to do.

Bill

RE: RX01 and RL01 on same UNIBUS system

[Henk Gooijen via cctalk]

Van: william degnan via cctech<mailto:cct...@classiccmp.org>
Verzonden: donderdag 17 augustus 2017 22:49
Aan: cctech<mailto:cct...@classiccmp.org>
Onderwerp: RX01 and RL01 on same UNIBUS system

Just curious,
Is there anyone out there with a combo RX01 and RL01 on the same UNIBUS
system, today?  Are there any known issues?

I found a large box of RX01 disks, lucky me.  Working to get the RX01 drive
running, experimenting.  My particular PDP 11 does not like it (11/40) but
I think the drive is faulty, at least so far.  Much work to do.

Bill


I have an 11/40 with RX02 and RL02.
I may be wrong, but perhaps the RX01 UNIBUS interface module
has no NPR passing on its contact fingers. So, if you put the RX01
interface module in a slot that was occupied by a “DMA capable”
device or the G7273 grant continuity card, you may have to add a
wire on the backplane (CA1-CB1 IIRC).

Henk

Re: RX01 and RL01 on same UNIBUS system

[Lyle Bickley via cctalk]

On Thu, 17 Aug 2017 16:48:47 -0400
william degnan via cctech  wrote:

> Just curious,
> Is there anyone out there with a combo RX01 and RL01 on the same
> UNIBUS system, today?  Are there any known issues?

I have an 11/34C (cache and floating point options) with (1) RX02, (2)
RL02, (1) SCSI, (1) TK50 and (1) DZ11 running RT, TSX, RSX and BSD 2.9
with no problems.

> I found a large box of RX01 disks, lucky me.  Working to get the RX01
> drive running, experimenting.  My particular PDP 11 does not like it
> (11/40) but I think the drive is faulty, at least so far.  Much work
> to do.

Your 11/40 should ultimately be "happy" with your RX01 ;)

Cheers,
Lyle
-- 
73  AF6WS
Bickley Consulting West Inc.
http://bickleywest.com

"Black holes are where God is dividing by zero"

Re: RX01 and RL01 on same UNIBUS system

[Paul Koning via cctalk]

> On Aug 17, 2017, at 4:48 PM, william degnan via cctech 
>  wrote:
> 
> Just curious,
> Is there anyone out there with a combo RX01 and RL01 on the same UNIBUS
> system, today?  Are there any known issues?
> 
> I found a large box of RX01 disks, lucky me.  Working to get the RX01 drive
> running, experimenting.  My particular PDP 11 does not like it (11/40) but
> I think the drive is faulty, at least so far.  Much work to do.
> 
> Bill

I think that our system at DEC (RSTS/E development) had that plus a whole lot 
more.  The machine was called ARK because "it had two of everything".  By the 
time I got there it wasn't quite every supported I/O device, but certainly a 
substantial subset.

There are a few obscure cases of conflicting address assignments among Unibus 
devices, but not in this case.  It should work fine as far as I can see.

paul