Good news in the meantime: I did a fair bit of testing last night and I
have a good terminator, 2 good cables, one good RLV12, and one good RL02.
The second RL02 was odd: It would spin up, come to ready with no
problems. However when I tried to boot it would endlessly seek a few
tracks in a
> From: Chris Zach
> The MSV11-QC board ... failed startup diagnostics with what looks like
> a stuck bit. .. now I need engineering schematics for that board so I
> can replace one of the 41256 memory chips. On the positive side it looks
like
> a pretty obvious stuck bit,
Yeah, it's kind of cool but takes up an insane amount of space. For
whatever reason I kept it through the decades and it holds the VT52
perfectly.
Now I'm wondering if it's worth fixing the LS120 that's out in the shed.
I sold an LA36 about a year or three ago, the LS120 was a weird duck:
I seem to recall that when the ribbon cable is in backwards, the fault
light comes on.
True. First cable faults hard (READY/FAULT on) no matter what. Second
cable would turn off the Fault light and allow spinup (right direction)
and ready. However when I tried to boot the drive went fault.
I seem to recall that when the ribbon cable is in backwards, the fault
light comes on.
Paul
On Fri, Nov 22, 2019 at 7:55 PM Chris Zach via cctalk
wrote:
> Normally my answer would be "no". *However* there is mention that
> changing 3 jumpers on an RL02 will allow you to read an RL01 pack (not
I thought there was some documented method of mounting a RL01 pack
read-only in an RL02 drive?
Thanks,
Jonathan
On Fri, Nov 22, 2019 at 8:10 PM allison via cctalk
wrote:
> On 11/22/19 2:36 PM, Al Kossow via cctalk wrote:
> >
> >
> > On 11/22/19 11:16 AM, Chris Zach via cctalk wrote:
> >> That
Normally my answer would be "no". *However* there is mention that
changing 3 jumpers on an RL02 will allow you to read an RL01 pack (not
write).
http://www.pdp-11.nl/peripherals/disk/rl-info.html
So... Maybe. However right now I'm trying to get the disks up. It's been
20 years, and my cables
On 11/22/19 2:36 PM, Al Kossow via cctalk wrote:
>
>
> On 11/22/19 11:16 AM, Chris Zach via cctalk wrote:
>> That
>> could be a problem if I want to re-load Cobol 81 onto this RSTS/E system.
>
> weren't RL01s usable in an RL02?
>
>
No for RL. You, maybe thinking RX01/02 interchangeability.
On 11/22/19 11:16 AM, Chris Zach via cctalk wrote:
https://i.imgur.com/7BwIwas.jpg
Ah man, I'm jealous of your VT52 roll-around stand -- wish I could find
one for my VT52!
--FritzM.
On 11/22/19 11:16 AM, Chris Zach via cctalk wrote:
> That
> could be a problem if I want to re-load Cobol 81 onto this RSTS/E system.
weren't RL01s usable in an RL02?
I do not remember these RL02 drives being this heavy.
https://i.imgur.com/7BwIwas.jpg
On a slightly more interesting note it looks like I only have RL02
drives (3) and do not have any RL01 drives. That could be a problem if I
want to re-load Cobol 81 onto this RSTS/E system. However the
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