[cctalk] Re: Last Buy notification for Z80 (Z84C00 Product line)

While intention might have been to last XX years, I am becoming increasingly pessimistic about longevity of most electronic devices. A crystal radio with an open air capacitor seems like the only good bet. Between electrolytic capacitor aging challenges, discrete and integrated circuit hermetic

[cctalk] Re: How to shutdown RT11?

I make sure that any disk squeeze is complete and other programs are quiescence. Then I just halt the processor or emulator.  Jerry On 3/22/24 8:23 AM, Paul Koning via cctalk wrote: On Mar 21, 2024, at 9:35 PM, W2HX via cctalk wrote: Ok, Bill. Still feels strange. No need to park the HD

Re: Using tu58fs with RT11 5.7

On 5/5/22 8:30 PM, Douglas Taylor via cctalk wrote: I wanted to try using tu58fs with a RT11 system running version 5.7 to transfer files in/out. To my surprise RT11 5.7 retired the DD: device, a DD.MAC file is there, but it is unsupported. (1) How do you compile a device driver file?  How

Re: DEC AXV11-C analog board

cctalk wrote: Yes, I am putting 1 into the CSR to start the conversion and I do get a 200(8) indicating that the conversion is complete.  I wonder if this means the A/D chip is OK but something else, like the multiplexer chip or gain amp is fried. On 2/6/2022 12:33 PM, Jerry Weiss via cctalk wrote

Re: DEC AXV11-C analog board

Are you triggering an A/D conversion via the CSR or external signal?  Then check the A/D done bit. See  EK-AXV11-UG-02 Chapter 4.    Jerry On 2/6/22 11:20 AM, Douglas Taylor via cctalk wrote: I have one of these and would like to use it, however it appears to only partially work.  Here is

Re: External SCSI Drives on DEC2000 AXP

DEC was were specific about the settings for SCSI mode that MicroVAX 3100 firmware and VAX/VMS would accept before enabling third party drives in that era.   Not all early drives that would accurately do/report media recovery operations. Suggest you look at this post and compare to the SCSI

Re: Looking for info on memory

On 10/20/21 7:10 PM, Nigel Johnson Ham via cctalk wrote: Thanks for that, but unfortunately it is crashing into ODT and not accepting input from the console, which I remember was a symptom of no bank 0 memory. Now,of course, it could be the receiver chip in the J board (I used to make a lot of

Re: Looking for info on memory

On 10/20/21 12:27 PM, Douglas Taylor via cctech wrote: On 10/19/2021 12:57 PM, Nigel Johnson Ham via cctech wrote: I am trying to bring up an 11/23 system in a BA23 box, and the only memory i have is an obscure Plessey one. The only identification is the p/n 705920 with dash-100 in white ink.

Re: PDP-11/05 Fault?

On 9/30/21 8:12 AM, Paul Koning via cctalk wrote: On Sep 30, 2021, at 1:02 AM, Nigel Williams wrote: On Thu, Sep 30, 2021 at 10:49 AM Paul Koning via cctalk wrote: I see that the PDP-11 architecture handbook doesn't seem to be on Bitsavers... Do you mean this handbook?

Re: SCSI2SD in a DEC 3000/300 - T-ERR-SCSI A

On 9/26/21 4:04 PM, Alexander Jacocks via cctalk wrote: On Sep 26, 2021, at 10:03 AM, Bill Degnan via cctalk wrote: I was either sacrifice a data drive to make it a backup of the primary or find a like drive first, get the system stable and then upgrade. I have a 3000 too here if you

Re: WordPerfect for VMS

On 5/7/21 8:45 PM, Zane Healy via cctalk wrote: Strange question, does anyone happen to have the keyboard overlays for the VAX/VMS version of Word Perfect that they can photograph, or better yet scan? I have the manuals, and the green, red, and blue stickers on the VT keyboard, but no

Re: RSX11D disks on EBAY- anyone interested?

On 4/8/21 4:48 PM, Noel Chiappa via cctalk wrote: > From: Jerry Weiss > I always wondered why the RKV11-D was only 16 bit addressable. The manual (EK-RKV11-OP-001) says: "Since the 11/03 BUS structure has no provision for extended addressing, no connection is made to the bus from

Re: RSX11D disks on EBAY- anyone interested?

On 4/7/21 1:23 PM, Noel Chiappa via cctalk wrote: . (Interestingly, the Dilog card above claims to the RKV11 compatible; but also says it has "memory addressing capability" to 256KB. They can't both be true, though; although the RKV11-D has the A16/A18 bits in the CSR, they aren't connected

Re: TSX

This is probably TSX V6.2   There are copies of this version here - https://shop-pdp.net/~stuff/PDFs/TSX-Plus/   Jerry On 3/29/21 9:04 PM, Chris Zach via cctalk wrote: Also came across a TSX Plus reference guide and install guide, from 1985. These two fill a very large binder, have they

Re: Modifying a RXV21 for an 11/83

On 1/24/21 8:11 PM, Chris Zach wrote: Ok. My guess is it throws off the cache on the 11/73 and above as it works in an 11/23 (which is soo slow!). I looked at the images, cut the traces, then soldered in two of the wires. Board did not work on either the 11/83 or the 11/23+ CPU. However

Re: Modifying a RXV21 for an 11/83

On 1/24/21 11:27 AM, Chris Zach via cctalk wrote: So I found an RXV21 board in the pile of stuff here and popped it into my 83. Crashes the system. It's an M8029 D board, and I see from this site that you have to add a few traces and cut a few others to make it work on an 11/73 or better.

Re: Regional accents and dialects (Was: The best hard drives??

On 11/19/20 4:06 PM, Fred Cisin via cctalk wrote: Long Island (NY) was pronounced Lawn-GUY-land The current Long Island accent developed in the mid to late 80's. Most of us living there before that had Bronx or Brooklyn accents... I remember some of my friends would type on a

Re: Next project: 11/24. Does it need memory?--Memory sad!

On 10/26/20 8:31 PM, Chris Zach via cctalk wrote: Ok, so I'm now troubleshooting the memory parity errors in the MS11-L memory. And yes, there are bit errors in the memory. I wrote a simple program to check the first 64k bank and I've found errors in bit 2 but not everywhere but on a

Re: Next project: 11/24. Does it need memory?--Working-ish!

On 10/25/20 8:01 PM, Chris Zach via cctalk wrote: . Question: Can an RX02 boot an RX01 floppy formatted single density with the DY: driver? Can it read an RX02 floppy in one drive and an RX01 floppy in the other or do you have to set the switches and use the right controller card (that

Re: DEC ADV11-D Analog to Digital converter with DMA

Thanks, I had wondered if some the earlier ADV-11and AAV-11 boards were just re-branded DTI boards. I have been hoping this is true for the -D variants. The most likely candidates are the DT2784/DT2782 and DT2771. Now if I can just find manuals for these...     Jerry On 10/17/20 2:06 AM,

Re: DEC ADV11-D Analog to Digital converter with DMA

On 10/16/20 5:34 PM, Mark Matlock via cctech wrote: I recently acquired an ADV11-D Qbus A/D board and having been working on a RSX11M+ driver for it. It is similar enough to the ADV11-C that the driver I wrote for the -C works ok, but the -D is DMA capable. It seems to have two extra

Re: RK11-D "diskless" test ZRKJE0???

On 7/9/20 7:02 PM, Robert Armstrong via cctech wrote:   I have an 11/04 with an RK11-D.  I have a couple of RK05s, but I wanted to test the controller before I start working on the drives.  The PDP11 Diagnostic Handbook says that ZRKJ?? "checks only the drive-independent logic of the RK11

Re: Got the RX01's running and TSX

I have run TSX+ since the early 80's.    I developed a few handlers to do graphics on a Peritek VRG-Q  and also for data acquisition. Nothing like like an  J-11, 4Mb and a hard disk to make a excellent personal workstation back then.   RXV21's were not a problem as TSX+ (>v6 I think) could

Re: pdp11/84 PMI memory: What is the problem with Q bus?

Sorry about the uNOTE confusion...  I was focused and just used the reference from the OEM version.  I was aware but had mentally excluded the older Microcomputer Products Group/Components Group version. If you look at the Memory Comparison table in this OEM uNOTE, it only lists Block Mode

Re: pdp11/84 PMI memory: What is the problem with Q bus?

On 4/19/20 2:29 PM, Chris Zach via cctalk wrote: So I picked up an 11/84 CPU, 3mb of memory, and a 11/84 Unibus card on Ebay. Goal is to speed up my fastest 11 here For boot time, the diagnostics run in 13 seconds (from when it starts to prompt) on the 11/73 board I have and 13 seconds on the

Re: DEC QBUS Backplanes

We had a few third party backplanes arranged like this.  This allowed them to put a small MFM hard drive or 8 inch floppy in empty  area next to the 4x2 (2x4?) slots of rack-mount 3U or 4U sized unit.  I don't recall any that were a mix of A-B, C-D.  Ours were A-B, A-B.     Jerry On 4/17/20

Re: Previous message: Wire list for the RKV11-D Qbus RK05 controller backplane anywhere?

On 2/12/20 11:28 AM, Noel Chiappa via cctalk wrote: > From: Jay Jaeger > Yeah, info does seem to be scarce. Not even in my LEVAX fiche set. My fiche set has the Technical Manual, and also (in the wirelist section) the wirelist. Not sure how to get it to you, though. I stuck it

Re: AED WINC08

On 11/11/19 12:27 AM, Eric Moore via cctech wrote: Hello, I have a working AED WINC08 drive, which is a winchester drive emulated to look like an RL02, along with the qbus controller card. https://archive.org/details/bitsavers_aedbrochurJan82_2107642/page/n1 The winchester drive itself is a

Re: Looking for schematics of QBUS 32KW memory module.

On 9/8/19 4:21 PM, Mister PDP via cctalk wrote: I guess I should have been a little more specific about the memory issues I was having when I made this post. For the most part these issues seem to be scattered all about memory. Also, while the XXDP I have been running has been catching more or

Re: Looking for schematics of QBUS 32KW memory module.

On 9/8/19 3:20 PM, Noel Chiappa via cctalk wrote: > From: Mister PDP > listed back there were numerous bad addresses all over memory. > ... > I cannot find schematics for any of the boards . With the completed chart in hand, given a failing word (address and bad data),

Re: XXDP on PDP-11/03

There are two versions of XXDP+ V2 monitors.   The XXDPSM.SYS is needed for cpu's w/o MMU's or don't have more than 28KW.  This and XXDPXM.SYS are both on the AK6DN diagnostic image. However, only a few other programs exist on the image. In SIMH the AK6DN image does the same thing.  The halt

Re: OT: Reflowing GPUs and the fruit company (was Re: Resurrecting integrated circuits by cooking them.)

On 7/28/19 8:33 PM, Jay Jaeger via cctalk wrote: On 7/28/2019 4:24 PM, Chuck Guzis via cctalk wrote: On 7/28/19 1:02 PM, Jerry Weiss via cctalk wrote: This method is not limited to "vintage" components. My MacBook Pro 2011 fails dues to its (famous) problem with the discre

Re: Resurrecting integrated circuits by cooking them.

This method is not limited to "vintage" components. My MacBook Pro 2011 fails dues to its (famous) problem with the discrete AMD GPU connections.   A reflow restores the laptop, but inevitably I have repeat the process every few months. Depending on who you believe, the fault is with the A)

Re: 11/93 Rebuild - SCSI HD now boots RT11

On 5/31/19 1:04 PM, Rod Smallwood via cctalk wrote: Hi     Well I now have a bootable SCSI drive on my 11/93. Its not RSTS/E (yet) but it is RT 11 and reliable. Its a bit baseline but it runs. So next up was to see if we could get the RQDX3 to co-exist with the SCSI controller. I

Re: HP/UX 8 and hosts vs DNS

On 5/27/19 12:31 AM, Cameron Kaiser via cctalk wrote: I'm not as adept at HP/UX before 10.20 (my first experience with the OS), but I understand 8.0 "fails over" to /etc/hosts if it has some issues with DNS. Fine, but how can I get it to switch *back*? There's no /etc/nsswitch.conf and I

Re: HP/UX 8 and hosts vs DNS

From https://docstore.mik.ua/orelly/networking_2ndEd/dns/ch06_04.htm Before HP-UX 10.10, you could only use nsswitch.conf to configure the order of resolution for the hosts source. From 10.10 on, you can also use nsswitch.conf to configure resolution order for the services, networks,

Re: SIMH question

On 4/24/19 10:14 AM, Paul Koning via cctalk wrote: On Apr 24, 2019, at 11:05 AM, Noel Chiappa via cctalk wrote: From: Glen Slick when I wanted to assemble some code with the RT-11 assembler but wanted to edit the source code elsewhere and then transfer the code into a SIMH disk image.

Re: PDP-11/93 and PMI Memory

The second memory boards CSR should be viable in ODT. The toggle switch internal contacts may be tarnished with age. Cycle each switch, that is used in the on position, multiple times and see if the CSR appears. Try another CSR if necessary to confirm the memory board is responsive to Q-bus

Re: SCSI2SD: Is it worth a try?

The system I use (OSX) to mange the SCSI2SD cards configuration and firmware doesn't have a SCSI.  I'd think of it more as a "nice to have" than a requirement.  The V6 cards allow data exchange via USB2. If you have the appropriate images, you can just DD the data directly to the microSD

Re: PDP-11 disk image question

On 2/20/19 1:25 PM, Glen Slick via cctalk wrote: On Mon, Feb 18, 2019 at 2:24 PM Bill Gunshannon via cctalk wrote: Theoretically, the SIMH emulated RA81 and the CMD emulated real disk RA81 should be the same size because they are both supposed to be RA81's. I spent the time to get set up and

Re: PDP-11 disk image question

On 2/16/19 7:55 AM, Bill Gunshannon via cctalk wrote: So, I used SIMH to do an install of a complete OS on an RA81 disk. I would like to move this to a real disk and try it on a real PDP-11. Is there a way to do this using dd on a BSD machine? I tried but it created a non bootable system.

Re: PDP-11/45 RSTS/E boot problem

On 2/13/19 1:43 AM, Fritz Mueller via cctalk wrote: SUCCESS!! Put the M795 out on an extender, loaded 16 in RKBAR, and had a look around with a logic probe. Narrowed it down to E34 (a 7430 8-input NAND). Pulled, socketed, replaced, and off she goes! I can now successfully boot and run

Re: PDP-11/45 RSTS/E boot problem

On 2/11/19 12:31 PM, Noel Chiappa via cctalk wrote: > From: Jerry Weiss > Though not a disk controller, the DEC DR11-B/DA11-B would not cross 64K > boundaries. Interesting! What's odd is that the DR11-B uses the Bus Interface card (M7219) from the RC11 controller, and that _can_

Re: PDP-11/45 RSTS/E boot problem

On 2/11/19 11:50 AM, Paul Koning via cctalk wrote: On Feb 11, 2019, at 11:12 AM, Jon Elson via cctalk wrote: On 02/11/2019 07:04 AM, Noel Chiappa via cctalk wrote: A look at the RK11 registers after the swap-out showed an anomaly; something about the extended memory address bits? (Maybe a

Re: TU-58 support under Unix

My speculation would be that TU58 did not add anything of value or convenience to these systems. I used Ultrix-11, V7M, Venix in this era.  My recollection is that in most cases to build these systems and patch them, you needed regular access  to 800/1600 BPI tape. Given this relatively

Re: advice / suggestion wanted PDP 11/40 only boots XXDP, not RT11

My recollection is that XXDP tries not to use Interrupts or DMA, unless it has to. I would check out those areas first for problems if it hangs in RT-11. Jerry On 1/31/19 2:26 PM, Bill Degnan via cctech wrote: My PDP 11/40 suddenly lost it's ability to boot RL02 disks except the XXDP disk.

Re: PDP-11 Memory

On 1/12/19 11:39 AM, Bill Gunshannon via cctalk wrote: On 1/12/19 12:29 PM, Pete Turnbull via cctalk wrote: On 12/01/2019 01:24, Zane Healy via cctalk wrote: I’m pretty sure you could get the /23+, /53, /73, /83, and /93 in either a BA23 or a BA123.  I have an actual badged BA23 pedestal for

Re: PDP-11 Memory

On 1/12/19 11:31 AM, Bill Gunshannon via cctalk wrote: On 1/12/19 9:20 AM, Bill Gunshannon via cctalk wrote: Well, the problem is definitely bus grant as with just two memory cards in the machine I put the disk controller in and it does not show up in the Map. The only problem with this is

Re: PDP-11 Memory

On 1/11/19 11:28 AM, Bill Gunshannon via cctalk wrote: Well, it has been so long since I had to put together an entire system I forgot what fun it can be. With almost documentation I was able to configure 4 1meg memory modules and I tested them all in my 11/23+ box. KDJ11-B with 4 different

Re: PDP-11 Memory

On 1/9/19 12:49 PM, Bill Gunshannon via cctalk wrote: And then I have two non-DEC module that are unlikely to have any documentation still floating around for. Camintonn CMV-1000 -- As funny as it sounds, this one looks more like a DEC MSV11-QA

Re: PDP-11/45 RSTS/E boot problem

On 1/5/19 11:17 PM, Tony Duell via cctalk wrote: On Sun, Jan 6, 2019 at 12:45 AM Fritz Mueller via cctalk wrote: • Try using the drive on the other bus if RSTS can be booted of from DK4. Easy enough experiment to try; would need to re-jumper the G740 disk selection flip chip in the

Re: uc04 + scsi2sd ?

Hi Jake, I don't have a UC04, but its manual states its  Peripheral Interface is SCSI single ended.  The pinout is just like the UC07, except for terminator power.     Jerry On 1/5/19 4:46 PM, Jacob Ritorto via cctalk wrote: Hey all, Anyone know whether the Emulex UC04 works with the

Re: PDP-11/45 RSTS/E boot problem

On 1/5/19 2:58 PM, Fritz Mueller via cctalk wrote: On Jan 5, 2019, at 8:07 AM, Noel Chiappa via cctalk wrote: From: Fritz Mueller All the CPU, FPU, KT11, KW11, and RK11 MAINDECS are passing just fine. Don't forget Vonada Maxim #12: "Diagnostics are highly efficient in finding solved

Re: seagate 801-> Q-bus interface

On 12/8/18 3:48 PM, Paul Anderson via cctalk wrote: Does anyone know who made a controller for a Seagate 800 or 801 floppy that will plug into the Q-bus? Model numbers wound be nice to. Thanks, Paul Dilog DQ419 Sigma SDC RXV31 Jerry

Hitachi at 1964 Worlds Fair - Was Re: 1968 Hitachi HIDIC 100 Mini Computer

On 11/23/18 10:45 AM, Bill Degnan via cctalk wrote: Sales Brochure scanned https://www.vintagecomputer.net/browse_thread.cfm?id=587 Bill One of my earliest computer "game" memories, was at the Hitachi exhibit from the 1964 New York Worlds Fair. I remember a small single capsule that had a

Re: NeXT Monitor Problem

On 11/8/18 10:08 AM, Ethan via cctalk wrote: The monitor works okay; slight burn in, but otherwise looks okay in terms of the phosphor. However, something seems to be wonky with the horizontal scan...the left edge is very wobbly. Replace all electrolytic caps with new Panasonic of Nichicon

Re: RT-11 DY install

On 10/17/18 1:53 PM, Don Stalkowski via cctalk wrote: I'm trying to use a simulated RX02 disk (under simh) with RT-11 and can't seem to get the DY driver to install. Here's the relevant log: sim> set ry enabled sim> att ry0 ry0.dsk RY: creating new file RY: buffering file in memory sim> c

Re: Advice requested on proper disposal of Seagate ST3000DM001 disk drives

On 9/21/18 1:06 PM, Fred Cisin via cctalk wrote: On Fri, 21 Sep 2018, Eric Smith via cctalk wrote: That's way too good for these

Re: MicroVAX I

On 8/14/18 5:40 PM, Josh Dersch via cctalk wrote: On 8/14/2018 2:12 PM, Ethan Dicks via cctalk wrote: On Sun, Aug 12, 2018 at 11:36 PM, robertbeauchamp33--- via cctalk wrote: My mother is moving and her spouse has a MicroVax I he bought new back in 1984 for some crazy amount. I don’t see

Re: Fairly Extensive Singer/Friden "System Ten" Computer System for Rescue

On 8/8/18 11:39 PM, Jason T via cctalk wrote: While I'm not claiming the system, I've let Rick know that I'm close to it and willing to help facilitate a rescue of at least some of the lot. Hi, I don't have a personal interest in the system, but if you need another hand to help with the

Re: PDP-11/84 Qbus slots for memory

On 7/22/18 12:54 PM, Noel Chiappa via cctalk wrote: > From: Mark Matlock > With the 11/83 the position of the memory board ... above the CPU uses > PMI Yes, through the C-D interconnect; described in detail here: http://gunkies.org/wiki/CD_interconnect#Use_by_PMI The

Re: Another DCJ11 oddity

On 7/10/18 2:38 PM, Noel Chiappa via cctalk wrote: > From: Jerry Weiss > See http://simh.trailing-edge.com/semi/j11.html for information on the > design of the J11. Thanks for that pointer; I don't think I've ever seen that - quite interesting. Alas, it didn't have the cache

Re: Another DCJ11 oddity

On 7/10/18 5:01 AM, Noel Chiappa via cctalk wrote: So, if one looks up the Cache Control Register in, say, the KDJ11-A (EK-KDJ1A-UG-002), one sees (in section 1.6.2.1) that there are _three_ ways to disable the cache: bits 2, 3 ('force miss'), and 9 ('bypass cache'). Looking at the DCJ11 manual

Re: Looking for info on Motorola 4015 chip

> On May 12, 2018, at 1:03 PM, Noel Chiappa via cctalk > wrote: > > Hey, all, the RK11-D contoller for the PDP-11 uses Motorola 4015 MSI chips on > one of the boards (M7254), but I can't find out anything about them. Google > didn't turn anything up, and the appendix in

Re: PDP11 I/O page memory map

> On Mar 2, 2018, at 9:11 AM, Paul Koning via cctalk > wrote: > > >> On Mar 2, 2018, at 8:37 AM, Noel Chiappa via cctalk >> wrote: >> >>> From: Jerry Weiss >> >>> Typically execution of the RESET instruction in a user program is >>> treated as

Re: PDP11 I/O page memory map

> On Mar 1, 2018, at 8:54 PM, Noel Chiappa via cctalk > wrote: > >> From: Charles Dickman > >> So if the I/O page is completely (all processor modes) unmapped is >> there any way to recover besides a power cycle? Does the RESET >> instruction disable the MMU? > >

Re: ADV11-A vs. ADV11-C and 22-bit Bus

> On Jan 28, 2018, at 12:23 PM, Mark Matlock via cctech > wrote: > > Jerry, Noel, > >Thanks for your feedback. Also, Noel was correct on the typos I made on > DD1, DE1, and DF1. I was copying from a scanned .pdf and some strange OCR > translation was occurring and

Re: ADV11-A vs. ADV11-C and 22-bit Bus

> On Jan 27, 2018, at 11:16 AM, Mark Matlock via cctech > wrote: > > I have an ADV11-A that I would like to use in a Q22 RSX11M+ system. The > ADV11-C will work in a 22-bit Bus system from what I understand but the > ADV11-A was made for 18 bit Bus systems. In the OEM

Re: ID board Dilog SU723A

> On Jan 8, 2018, at 7:17 PM, John Welch via cctech > wrote: > > Thanks! I did some searching but all The Google could find were a few > re-sellers that had the board but no info. The 'feet' of the board (the part > that plugs into the buss sockets) are labeled C, D,

Re: RX02 Difficulties

> On Dec 16, 2017, at 7:59 PM, Chuck Guzis via cctalk > wrote: > > On 12/16/2017 05:21 PM, Fred Cisin via cctalk wrote: > >> So, some of us do not trust the labels on disks. > I don’t trust the labels on my floppies. Especially those with with my handwriting.

Re: RX02 Difficulties

Glad to hear that you cleared that up. For the other floppies. 1) DUMP/TERM/RAD50/END:0 DY1: If you share the listing that will give us some hints as to the OS on the floppies. 2) DIR/BAD DY1: will do a bad block scan to see if can read all of the blocks on the media. It

Re: RX02 Difficulties

> On Dec 9, 2017, at 1:25 PM, Aaron Jackson wrote: > > Thanks Jerry. That was very helpful. Found a stray piece of metal lying > across the board next to an AND gate, which is slightly > disconcerting. Possibly a stray wire clipping. Both drives pass the > diagnostics. >

Re: Re; Revive 11/34

> On Dec 9, 2017, at 8:23 AM, Noel Chiappa via cctalk > wrote: > > >> From: Jerry Weiss > > And the same for Jerry... > >> It won't seat evenly if reversed. At least that is what my scraped >> knuckles remember. > > Nope, they go in quite fine the wrong way around;

Re: Revive 11/34

> On 12/8/2017 3:50 PM, Jerry Weiss wrote: >> On Dec 8, 2017, at 2:25 PM, John Welch via cctech >> wrote: >> >>> I am reviving an 11/34. Cards are: >>> >>> Back/Fans [M8266] Front of machine where keypad is. >>> [M8265] >>> [M9312]

Re: Revive 11/34

On Dec 8, 2017, at 2:25 PM, John Welch via cctech wrote: > > I am reviving an 11/34. Cards are: > > Back/Fans [M8266] Front of machine where keypad is. > > [M8265] > > [M9312] [M7859] > > [M7762] > >

Re: RX02 Difficulties

On Dec 8, 2017, at 5:17 PM, Aaron Jackson wrote: > >>> On Dec 8, 2017, at 12:53 PM, Aaron Jackson via cctalk >>> wrote: >>> On Fri, Dec 8, 2017 at 3:03 PM, Aaron Jackson wrote: > > Manual says it

Re: RX02 Difficulties

> On Dec 8, 2017, at 12:53 PM, Aaron Jackson via cctalk > wrote: > >> On Fri, Dec 8, 2017 at 3:03 PM, Aaron Jackson >> wrote: >>> >>> Manual says it should be S1=off, S2=on for RX211 and RXV21 >> >> In the photo, I think S1 is on and S2 is

Re: VAX Q-bus identical to PDP-11 Q-bus?

> On Dec 7, 2017, at 1:22 PM, allison via cctalk wrote: > ….. > > As such PDP11 and VAX support is there unless the OS in non-DEC in > origin and even then if the > time frame made it a marketing requirement the third party OS vendor had it. > > An example is a RD54 on a

Re: VAX Q-bus identical to PDP-11 Q-bus?

The metal face on the Q-Bus cards was there as part of the solution to meet FCC (or equivalent) regulations to reduce electrical interference to radio receivers and other devices. If you can physically fit it into a older Qbus backplane and sort out the cabling it should work provided you have

Re: RL02 Spinup fails

> On Nov 11, 2017, at 2:42 PM, Aaron Jackson wrote: > >> Aaron, >> >> Do not underestimate the need for termination, even with a very short >> external cable. >> When you factor in the internal cables runs, crosstalk or signal >> reflections which interfere >> with

Re: RL02 Spinup fails

> On Nov 11, 2017, at 10:58 AM, Aaron Jackson via cctalk > wrote: > > ……... > The RL02 technical manual says to figure out why a drive error occurred, > I can execute a get status command (?) and then perform an MPR read > (?). So while I don't know how to do that, the

Re: Diablo 31 air filters / plugs ?

> On Oct 7, 2017, at 5:00 PM, Al Kossow via cctalk <cctalk@classiccmp.org> > wrote: > > On 10/7/17 1:31 PM, Jerry Weiss via cctalk wrote: > >> There wasn’t a head lock. > yes, there is. > > It is a 'L' shaped bracket that screws onto the top of the actuat

Re: Diablo 31 air filters / plugs ?

> On Oct 7, 2017, at 12:55 PM, jos via cctalk wrote: > > > Looks like another computer will be joining the stable shortly, containing a > Diablo 31 drive. > > From the manual it looks that it does not need heads to be locked down for > transport, so I should be save

Re: The origin of SCSI [WAS:RE: The origin of the phrases ATA and IDE ]

The DK Driver for VMS versions around 5.x definitely had a problem with non-DEC disks. 6.X and greater were slightly more forgiving. The specifics are summarized in a note from Ralph Weber in

Re: Strange grounding problem

> On Sep 27, 2017, at 8:14 PM, Charles Dickman via cctalk > wrote: > > On Wed, Sep 27, 2017 at 8:23 PM, Adrian Graham via cctalk > wrote: > >> Schematic for the circuits is here - >> http://www.binarydinosaurs.co.uk/newbrainPowerupCircuits.png

Re: M8195 SLU died while in use

> On Sep 25, 2017, at 8:37 AM, Noel Chiappa via cctalk > wrote: > >> From: Aaron Jackson > >> a PDP-11/73, M8192 CPU, two M8067 RAM, M7195 ... While playing in ODT, >> the console completely stopped responding. >> ... >> The CPU shows 1000, which I believe is fine, and

Re: QDSS qbus VCB02 8-plane video

> On Sep 3, 2017, at 7:56 PM, Charles Dickman via cctalk > wrote: > > I found that I have a board set for a VCB02. My research says it will > work in either Q CD or Q Q slots of a qbus backplane. True? > > I have no cabinet kit. Is it documented anywhere? The closest I

Re: RX02 Emulator

> On Sep 1, 2017, at 10:41 AM, Douglas Taylor via cctech > wrote: > > In my other post I asked about DEC 11/2 and 11/03 cpus and 18/22 bit > backplanes. I am still interested in this but I am considering what type of > disk to run from. > > I ran into a rx02_emulator

Re: DEC ll/03 in 22 bit backplane

> On Aug 30, 2017, at 9:52 AM, Noel Chiappa via cctalk > wrote: > >> From: Jerry Weiss > >> The processor will probably halt due to non-existent memory address. > > No, it'll take a NXM trap (through 4); what happens then depends on what the > trap handler is set to -

Re: DEC ll/03 in 22 bit backplane

> On Aug 30, 2017, at 8:04 AM, Jerry Weiss wrote: > >> >> Next you'd need some sort of bootstrap. What's in the custom EPROMs on you >> MXV11-AC might do. Or might not, depending on whether it uses any 11/23 >> (KDF-11) specific instructions or diagnostics, and includes an

Re: DEC ll/03 in 22 bit backplane

> On Aug 30, 2017, at 4:53 AM, Pete Turnbull via cctalk > wrote: > > On 30/08/2017 05:29, Douglas Taylor via cctalk wrote: >> I'll send along a picture of the rear of the back plane. I'm getting >> the impression I can't do what I want with the old cpu cards, M7270 >>

Re: DEC ll/03 in 22 bit backplane

> On Aug 29, 2017, at 9:52 PM, Douglas Taylor via cctalk > wrote: > > I have a BA11-M box with a backplane that I am sure has been upgraded to be > 22 bit addressing. > > When I got this box it had an 11/23 Dual width Cpu, MXV11-AC with custom boot > ROMs and a 256KB

Re: Champaign, IL to Iowa City, Iowa and back trip

> On Aug 19, 2017, at 11:08 AM, Jon Elson via cctalk > wrote: > > On 08/19/2017 10:03 AM, Tony Aiuto via cctalk wrote: >> A well priced PDP8 just went on sale in Iowa. I can't get it back from >> Champaign to NYC, but someone else might be able to snatch it. >>

Re: RX02 *.DSK convert to PDP11GUI Image format

> On Aug 15, 2017, at 2:33 PM, Don North <no...@alum.mit.edu> wrote: > > On 8/15/2017 2:10 AM, Jerry Weiss via cctalk wrote: >>> ... >> >> As far as the DSK format, the files from at Alan’s site are logical >> disk images. Logical block 0,1,2,3 from fro

Re: RX02 *.DSK convert to PDP11GUI Image format

> On Aug 14, 2017, at 11:49 PM, Glen Slick via cctalk > wrote: > > On Sun, Aug 13, 2017 at 9:00 AM, Ulrich Tagge via cctalk > wrote: >> Hi all, >> >> maybe someone can help. >> I would like to install TCP/IP on my RT-11 system. >> After a short

Re: RX02 *.DSK convert to PDP11GUI Image format

> On Aug 13, 2017, at 12:59 PM, Ulrich Tagge wrote: > > Hi Jerry, > > I have tried with PDP11GUI, but the first message says "The image contains > only 505856 bytes, but disk has 512512 bytes". > I have written some disks, and have ignored this message, but none of them is >

Re: RX02 *.DSK convert to PDP11GUI Image format

> On Aug 13, 2017, at 11:00 AM, Ulrich Tagge via cctalk > wrote: > > Hi all, > > maybe someone can help. > I would like to install TCP/IP on my RT-11 system. > After a short search I have found the following, which I would use: >

Re: PDP-11/84 Bootstrap for TSV05 (Dilog DU142)

> On Aug 9, 2017, at 1:58 PM, Ulrich Tagge via cctalk > wrote: > > Hi All, > I have some trouble to get the Bootstrap for an Dilog DU142 (TS11) Controller > running on my PDP-11/84. > The bootstrap on page 3-2 of the following documentation was used: >

Re: WTB: RX02 Floppy Disks

> On Aug 4, 2017, at 1:09 PM, Ulrich Tagge via cctalk > wrote: > > Hi Jerry, >> You’ve made pretty good progress. > Yes with the right input and help this can happen. ;-) > And all the help is much appreciated! Glad to share. >> >> If you haven’t already, Google for

Re: WTB: RX02 Floppy Disks

> On Aug 3, 2017, at 4:28 PM, Ulrich Tagge via cctalk > wrote: > > Hi All, > All my 8" SSDD /SSSDdisks are non formatted, which was the reason for my > initial troubles. > Nevertheless, my IBM System /23 (Type 5324) can format disks in three > different formats: > >

  1   2   >