Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-05 08:55, David Bridgham via cctalk wrote: On 8/5/17 04:29, emanuel stiebler wrote: Xilinx Artix 7. More specifically, we're using a ZTEX 2.13 FPGA module for our prototyping. Unless some good reason came up, I was thinking to stick with the same FPGA. Artix 7? Nice, use them a

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/5/17 04:29, emanuel stiebler wrote: >> Xilinx Artix 7. More specifically, we're using a ZTEX 2.13 FPGA module >> for our prototyping. Unless some good reason came up, I was thinking to >> stick with the same FPGA. > > Artix 7? Nice, use them a lot. > > Vivado or ISE? Vivado. Another

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 18:12, David Bridgham via cctalk wrote: On 8/4/17 11:25, emanuel stiebler wrote: What FPGAs are you using? Xilinx Artix 7. More specifically, we're using a ZTEX 2.13 FPGA module for our prototyping. Unless some good reason came up, I was thinking to stick with the same FPGA.

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, 4 Aug 2017, Guy Sotomayor Jr wrote: Unfortunately PATA drives are becoming difficult to find and designing a SATA interface (not to mention layout issues) is not for the faint of heart. That's why I suggest using dirt cheap external PATA<-->SATA bridges. Christian

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 11:25, emanuel stiebler wrote: > http://ww1.microchip.com/downloads/en/DeviceDoc/1678B.pdf > that the one I use a lot... Oh, a USB PHY chip. Yeah, that might be the way to go now that we're not counting I/O pins. >> 1:1 block mapping. I'm going to have enough fun with trying to

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 4, 2017, at 1:27 PM, ben via cctalk wrote: > > On 8/4/2017 12:49 PM, Warner Losh via cctalk wrote: >> On Fri, Aug 4, 2017 at 12:36 PM, Al Kossow via cctalk >> wrote: >>> >>> >>> On 8/4/17 11:14 AM, Warner Losh via cctalk wrote: most

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/2017 12:49 PM, Warner Losh via cctalk wrote: On Fri, Aug 4, 2017 at 12:36 PM, Al Kossow via cctalk

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 4, 2017, at 3:46 PM, Noel Chiappa via cctalk > wrote: > >> From: David Bridgham dab at froghouse.org > >> I'm going to have enough fun with trying to implement the USB stack in >> the FPGA > > ISTR discussing putting a PDP-11 into the FPGA (there are Verilog

Re: 2.11BSD on two RL02 drives? Probably not, but...

> From: David Bridgham dab at froghouse.org > I'm going to have enough fun with trying to implement the USB stack in > the FPGA ISTR discussing putting a PDP-11 into the FPGA (there are Verilog PDP-11's available), so we could write our USB code in C (I'd use the Unix V6 compiler to

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 15:18, Phil Blundell via cctalk wrote: On Fri, 2017-08-04 at 15:04 -0400, Noel Chiappa via cctalk wrote: And this path allowed us to get rolling without having to go through the PC-board fab cycle... (including the complexity of doing boards with gold fingers). Just as an aside

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 15:15, David Bridgham via cctalk wrote: On 8/4/17 10:46, emanuel stiebler via cctalk wrote: Definitely I'll stick with 12Mb/s USB to start (for sure on our wire-wrapped prototype board) but I'd love to boost that to 480Mb/s later. The analog issue is one thing that made me

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 11:16, emanuel stiebler via cctalk wrote: > Use the memory as disk cache locally. Otherwise you need to write > drivers for all different versions of OSs out there. Transparent cache, > write through ... > > Then no changes are needed on the system Well, we are going to make the RAM

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 14:54, Noel Chiappa via cctalk wrote: > From: Warner Losh > had problems finding out just how fast Q-Bus can go Something like 700 nsec for a cycle (best case), so assuming 16-bit transfers, a max of a little over 20 Mbit/sec. From an old email from tim Shoppa who

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, 2017-08-04 at 15:04 -0400, Noel Chiappa via cctalk wrote: > > And this path allowed us to get rolling without having to go through > the PC-board fab cycle... (including the complexity of doing boards > with gold fingers). Just as an aside on that, I doubt you really need the hard gold

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, Aug 4, 2017 at 1:04 PM, Noel Chiappa via cctalk < cctalk@classiccmp.org> wrote: > > From: Paul Koning > > > flash storage devices do wear leveling. The fact that you're writing > to > > the same block number doesn't mean you're actually writing to the > same > > spot on

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 15:04, Noel Chiappa via cctalk wrote: > From: Paul Koning > flash storage devices do wear leveling. The fact that you're writing to > the same block number doesn't mean you're actually writing to the same > spot on the physical flash memory. Yeah, but why 'waste'

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 10:46, emanuel stiebler via cctalk wrote: >> > USB with 480MHz is fast enough >> >> I think our plan was to skip that speed, and go with the next one down, > Probably sufficient for a start ... > > on >> the grounds that the analog part at that speed would be too tricky >> for us. >

Re: 2.11BSD on two RL02 drives? Probably not, but...

> From: Emanuel Stiebler >> on the grounds that the analog part at that speed would be too tricky >> for us. > No, it isn't. You _are_ talking to two people who are so clueless about analog that we didn't bother putting ground lines between each pair of signal lines in a

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, Aug 4, 2017 at 12:47 PM, Paul Koning via cctalk < cctalk@classiccmp.org> wrote: > > > On Aug 4, 2017, at 2:36 PM, Al Kossow via cctalk > wrote: > > > > > > > > On 8/4/17 11:14 AM, Warner Losh via cctalk wrote: > >> most SD cards can easily handle 100-200 writes > >

Re: 2.11BSD on two RL02 drives? Probably not, but...

> From: Al Kossow > The issue would be things like the swap partition on a unix disk or > whatever the equivalent is under RSX Which is why, as I mentioned, that we're including the ability to have virtual disks which store their data in RAM, not on permanent storage - their contents

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 14:38, Warner Losh via cctalk wrote: On Fri, Aug 4, 2017 at 12:18 PM, Noel Chiappa via cctalk < cctalk@classiccmp.org> wrote: > USB with 480MHz is fast enough I think our plan was to skip that speed, and go with the next one down, on the grounds that the analog part at that

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 4, 2017, at 2:36 PM, Al Kossow via cctalk > wrote: > > > > On 8/4/17 11:14 AM, Warner Losh via cctalk wrote: >> most SD cards can easily handle 100-200 writes > > The issue would be things like the swap partition on a unix disk > or whatever the equivalent is

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 14:18, Noel Chiappa via cctalk wrote: Exactly our plan (although the USB is left until after we get the SD running). > USB with 480MHz is fast enough I think our plan was to skip that speed, and go with the next one down, Probably sufficient for a start ... > on the

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, Aug 4, 2017 at 12:18 PM, Noel Chiappa via cctalk < cctalk@classiccmp.org> wrote: > > USB with 480MHz is fast enough > > I think our plan was to skip that speed, and go with the next one down, on > the grounds that the analog part at that speed would be too tricky for us. I did some

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 11:14 AM, Warner Losh via cctalk wrote: > most SD cards can easily handle 100-200 writes The issue would be things like the swap partition on a unix disk or whatever the equivalent is under RSX

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/2017 8:07 AM, Christian Corti via cctalk wrote: On Fri, 4 Aug 2017, Noel Chiappa wrote: But are SD cards really that unreliable? If they were, I'd have thought I'd Yes they are. Just have look around in the world of cameras and smartphones where people suffer from losing their photos

2.11BSD on two RL02 drives? Probably not, but...

> From: Emanuel Stiebler > If I would do it again, it would be USB only with some sd-card slots. Exactly our plan (although the USB is left until after we get the SD running). > USB with 480MHz is fast enough I think our plan was to skip that speed, and go with the next one down,

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, Aug 4, 2017 at 11:17 AM, David Bridgham via cctalk < cctalk@classiccmp.org> wrote: > > So my question is: do industrial SD cards exist? > Yes. They have for about a decade. Almost all SD cards these days could easily handle an I/O write rate that a PDP-11 is able to generate. It takes

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 14:01, Noel Chiappa via cctalk wrote: > From: Al Kossow > but it looks like they are going EOL Is that just this particular product (individual SD/etc products seem to go out all the time, as new and bigger ones come out), or industrial SD cards in general? I hope not

Re: 2.11BSD on two RL02 drives? Probably not, but...

> From: Al Kossow > but it looks like they are going EOL Is that just this particular product (individual SD/etc products seem to go out all the time, as new and bigger ones come out), or industrial SD cards in general? I hope not that latter, that would blow a large hole in out

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 13:51, Noel Chiappa via cctalk wrote: > From: Paul Koning >> do industrial SD cards exist? > If you have a ready-made SD interface, these cards work nicely. If you > need to build one from scratch it gets tricky, because the interface is > fairly high speed

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 13:17, David Bridgham via cctalk wrote: I don't think I'm up to going with a higher-end FPGA and trying to implement SATA even though in many ways I think that's the right answer. If there's a SATA PHY chip, that's a maybe. Forget about SATA, even if some people like it here;-)

Re: 2.11BSD on two RL02 drives? Probably not, but...

> From: Paul Koning >> do industrial SD cards exist? > If you have a ready-made SD interface, these cards work nicely. If you > need to build one from scratch it gets tricky, because the interface is > fairly high speed serial (packet based) signaling, and the >

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 10:34 AM, Phil Blundell via cctalk wrote: > On Fri, 2017-08-04 at 09:17 -0800, David Bridgham via cctalk wrote: >> > So my question is: do industrial SD cards exist? > > Yes they do. Most of the big card manufacturers have an "industrial" > range, for example: > >

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, 2017-08-04 at 09:17 -0800, David Bridgham via cctalk wrote: > So my question is: do industrial SD cards exist? Yes they do. Most of the big card manufacturers have an "industrial" range, for example: https://www.sandisk.co.uk/oem-design/industrial/industrial-cards There are also

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 09:26, Paul Koning wrote: >> So my question is: do industrial SD cards exist? > Yes; we've been using them for years now in the products I work on. While > you can still wear them out if you beat on them hard enough, they do have > good reliability. Okay, that's good news then. Any

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 4, 2017, at 1:17 PM, David Bridgham via cctalk > wrote: > > ... > So my question is: do industrial SD cards exist? Yes; we've been using them for years now in the products I work on. While you can still wear them out if you beat on them hard enough, they do

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 05:49, systems_glitch via cctalk wrote: > Going with SLC/"industrial" Flash is indeed the key to avoiding random > failures. I have many deployed systems using industrial Flash modules (IDE > DOMs) As Noel said, he initially talked using an IDE interface for the QSIC. I proposed SD

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 4, 2017, at 1:14 AM, Christian Corti via cctalk > wrote: > > On Thu, 3 Aug 2017, emanuel stiebler wrote: >> On 2017-08-03 11:12, Al Kossow via cctalk wrote: >>> It would be nice, though if someone just finished a MSCP controller with a >>> CF or SD on it. >>

Re: 2.11BSD on two RL02 drives? Probably not, but...

the cheap bridges are actually based on the 20330 you can find a real data sheet if you search for JM20330_datasheet_v2.5.pdf hard enough some discussions of their use with ssd trim https://forum.thinkpads.com//viewtopic.php?t=115329 On 8/4/17 8:08 AM, Al Kossow via cctalk wrote: > > > On

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, 4 Aug 2017, Al Kossow wrote: Can you actually buy SATA PHYs in small quantities now or even SATA to PATA bridges? I would go for a cheap external bridge, something like this: https://www.amazon.com/dp/B008X8NK0I

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 7:44 AM, systems_glitch via cctalk wrote: > There are indeed cheap SATA -> IDE bridge ICs. yup, I'm running around 50 of them in my upgraded XServe RAIDs when I converted to 1tb 2.5" SATA-2 drives in 2015.

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 7:37 AM, Phil Blundell via cctalk wrote: > ASSPs like TI's TUSB9260 which turns up a big fat nothing in a web search is there a data sheet somewhere? the 6250 is a SATA 2 to USB using an 8051 core, but I suspect you can't get the code for that. one of the common pata-sata bridges

Re: 2.11BSD on two RL02 drives? Probably not, but...

There are indeed cheap SATA -> IDE bridge ICs. I'm currently evaluating some small, cheap IDE -> mSATA SSD adapters for disk replacements in industrial systems. The module with a mSATA socket and 44-pin laptop sized IDE connector is less than $10 from various online retailers. Thanks, Jonathan

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, 2017-08-04 at 07:20 -0700, Al Kossow via cctalk wrote: > > Can you actually buy SATA PHYs in small quantities now > or even SATA to PATA bridges? I can't think of anybody who makes discrete SATA PHYs, and there isn't a standardized interface for the other side of the PHY so I suspect

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/4/17 7:07 AM, Christian Corti via cctalk wrote: > If you really want a non-rotating media, then I > suggest that you use SATA SSDs. Can you actually buy SATA PHYs in small quantities now or even SATA to PATA bridges? I remember looking for them in the past and either not being able to buy

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, 4 Aug 2017, Paul Koning wrote: On Aug 4, 2017, at 4:14 AM, Christian Corti via cctalk wrote: I don't like the idea of CF or SD at all. I'd pretty much prefer PATA or SATA, because ... CF is PATA, just a different connector. If the board provides a PATA

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, 4 Aug 2017, Noel Chiappa wrote: But are SD cards really that unreliable? If they were, I'd have thought I'd Yes they are. Just have look around in the world of cameras and smartphones where people suffer from losing their photos just because an SD card decides to fail. I have several

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 4, 2017, at 4:14 AM, Christian Corti via cctalk > wrote: > > On Thu, 3 Aug 2017, emanuel stiebler wrote: >> On 2017-08-03 11:12, Al Kossow via cctalk wrote: >>> It would be nice, though if someone just finished a MSCP controller with a >>> CF or SD on it. >>

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, Aug 4, 2017 at 9:49 AM, systems_glitch via cctalk < cctalk@classiccmp.org> wrote: > Going with SLC/"industrial" Flash is indeed the key to avoiding random > failures. I have many deployed systems using industrial Flash modules (IDE > DOMs) running 24/7 in critical production environments,

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, Aug 4, 2017 at 9:42 AM, Phil Blundell via cctalk < cctalk@classiccmp.org> wrote: > On Fri, 2017-08-04 at 08:53 -0400, Noel Chiappa via cctalk wrote: > > > > But are SD cards really that unreliable? > > It depends on exactly how you measure "reliable". There are a few > different things

Re: 2.11BSD on two RL02 drives? Probably not, but...

Going with SLC/"industrial" Flash is indeed the key to avoiding random failures. I have many deployed systems using industrial Flash modules (IDE DOMs) running 24/7 in critical production environments, mostly running machine tools and semiconductor production line equipment. We still do regular

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Fri, 2017-08-04 at 08:53 -0400, Noel Chiappa via cctalk wrote: > > But are SD cards really that unreliable? It depends on exactly how you measure "reliable". There are a few different things going on, and it differs from one SD card to another. Firstly, there are multiple types of flash

Re: 2.11BSD on two RL02 drives? Probably not, but...

> From: Christian Corti > I don't like the idea of CF or SD at all. I'd pretty much prefer PATA > or SATA, because ... Real drives are also much more reliable than flash > drives, I found this interesting/troubling, because Dave Bridgham and I decided to use SD cards, after I

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-04 04:14, Christian Corti via cctalk wrote: On Thu, 3 Aug 2017, emanuel stiebler wrote: On 2017-08-03 11:12, Al Kossow via cctalk wrote: It would be nice, though if someone just finished a MSCP controller with a CF or SD on it. I don't think there is enough demand for it. So to

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Thu, 3 Aug 2017, emanuel stiebler wrote: On 2017-08-03 11:12, Al Kossow via cctalk wrote: It would be nice, though if someone just finished a MSCP controller with a CF or SD on it. I don't think there is enough demand for it. So to finish it would take some effort, and the boards wouldn't

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Wed, Aug 2, 2017 at 2:14 PM, Aaron Jackson via cctalk < > cctalk@classiccmp.org> wrote: > >> >> On Aug 2, 2017, at 11:32 AM, Aaron Jackson via cctech < >> cct...@classiccmp.org> wrote: >> >> >> >> Hi all, >> >> >> >> I will soon be getting a PDP-11/73 with 1MB of RAM, an RLV12 and DEQNA >> >>

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Wed, Aug 2, 2017 at 2:14 PM, Aaron Jackson via cctalk < cctalk@classiccmp.org> wrote: > >> On Aug 2, 2017, at 11:32 AM, Aaron Jackson via cctech < > cct...@classiccmp.org> wrote: > >> > >> Hi all, > >> > >> I will soon be getting a PDP-11/73 with 1MB of RAM, an RLV12 and DEQNA > >>

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 3, 2017, at 9:28 AM, Noel Chiappa via cctalk > wrote: > >> From: Guy Sotomayor Jr > >> Having several different Unibus board designs in various stages .. I can >> tell you that producing a *reliable* Unibus board is *not* going to be >> cheap. > > Why not?

Re: 2.11BSD on two RL02 drives? Probably not, but...

> From: Guy Sotomayor Jr > Having several different Unibus board designs in various stages .. I can > tell you that producing a *reliable* Unibus board is *not* going to be > cheap. Why not? Just the size, gold-plated fingers, and transceiver chips, or is there more?

Re: 2.11BSD on two RL02 drives? Probably not, but...

I've heard that the Emulex UD33 and SC21 are the SMD controllers of > choice, but do they do MSCP? I'd love to head any comments from those "in > the know" out there. Are there other alternatives other than Emulex that > may work well also? Emulex UD33 is MSCP and is similar to QD32 and

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 2017-08-03 11:12, Al Kossow via cctalk wrote: It would be nice, though if someone just finished a MSCP controller with a CF or SD on it. I don't think there is enough demand for it. So to finish it would take some effort, and the boards wouldn't be cheaper than the SCSI controllers out

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 3, 2017, at 7:10 AM, Rick Bensene via cctalk > wrote: > > That said, my PDP 11 is Unibus, and Unibus SCSI controllers are darned > expen$ive. They’re desirable and not a lot around. So it’s not terribly surprising. Having several different Unibus board

Re: 2.11BSD on two RL02 drives? Probably not, but...

On 8/3/17 7:10 AM, Rick Bensene via cctalk wrote: > I've found much the same with ESDI drives...they tend to die just sitting, > and it's not stiction that seems to be the culprit...they simply quit working. That isn't good news. I still have about 100 drives that came out of Apollo's

RE: 2.11BSD on two RL02 drives? Probably not, but...

Glen S. wrote: >QBus ESDI controllers are relatively cheap. I have several Emulex QD21, Dilog >DQ696, and Sigma SDC-RQD11 QBus ESDI controllers. The >problem I have with >them is that I now have more controllers than working ESDI drives. Some of the >drives that I had which were >working have

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Wed, Aug 2, 2017 at 6:24 PM, systems_glitch via cctalk wrote: > You might consider just adding another storage controller. I'd recommend > something that talks MSCP. SCSI seems to be what most people are after > nowadays, but ESDI controllers are much cheaper, and the

Re: 2.11BSD on two RL02 drives? Probably not, but...

>> On Aug 2, 2017, at 11:32 AM, Aaron Jackson via cctech >> wrote: >> >> Hi all, >> >> I will soon be getting a PDP-11/73 with 1MB of RAM, an RLV12 and DEQNA >> controllers. I already have two RL02 and packs (which need a clean), >> with thanks to Dave Wade on this list.

Re: 2.11BSD on two RL02 drives? Probably not, but...

> On Aug 2, 2017, at 11:32 AM, Aaron Jackson via cctech > wrote: > > Hi all, > > I will soon be getting a PDP-11/73 with 1MB of RAM, an RLV12 and DEQNA > controllers. I already have two RL02 and packs (which need a clean), > with thanks to Dave Wade on this list. > >

Re: 2.11BSD on two RL02 drives? Probably not, but...

On Wed, Aug 2, 2017 at 7:24 PM, systems_glitch via cctalk < cctalk@classiccmp.org> wrote: > You might consider just adding another storage controller. I'd recommend > something that talks MSCP. SCSI seems to be what most people are after > nowadays, but ESDI controllers are much cheaper, and the

Re: 2.11BSD on two RL02 drives? Probably not, but...

> Bill > > On Wed, Aug 2, 2017 at 7:12 PM, Aaron Jackson via cctalk < > cctalk@classiccmp.org> wrote: > > > > From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Aaron > Jackson > > via cctalk [cctalk@classiccmp.org] > > > Sent: Wednesday, August

Re: 2.11BSD on two RL02 drives? Probably not, but...

> From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Aaron Jackson via > cctalk [cctalk@classiccmp.org] > Sent: Wednesday, August 2, 2017 2:32 PM > To: cct...@classiccmp.org > Subject: 2.11BSD on two RL02 drives? Probably not, but... > > Hi all, > > I will

RE: 2.11BSD on two RL02 drives? Probably not, but...

From: cctalk [cctalk-boun...@classiccmp.org] on behalf of Aaron Jackson via cctalk [cctalk@classiccmp.org] Sent: Wednesday, August 2, 2017 2:32 PM To: cct...@classiccmp.org Subject: 2.11BSD on two RL02 drives? Probably not, but... Hi all, I will soon

2.11BSD on two RL02 drives? Probably not, but...

Hi all, I will soon be getting a PDP-11/73 with 1MB of RAM, an RLV12 and DEQNA controllers. I already have two RL02 and packs (which need a clean), with thanks to Dave Wade on this list. Ideally I would like to run 2.11BSD, on two RL02 drives, I'm not sure this is going to be possible. Does