Re: MAINDEX-11 CZKMA Diagnostic?

On 8/18/2015 7:36 PM, Ben Sinclair wrote: I'm again trying to debug my PDP-11/23, and I believe I'm having trouble with my M8067-LB/MSV-11 memory. According to the manual, there is a diagnostic program called CZKMA (for my 18-bit system), but I can't seem to find it. I have all of the xxdp

Re: PiDP-11 plans...

On 10/22/2015 9:06 PM, ben wrote: On 10/22/2015 8:45 PM, Mark Matlock wrote: Oscar, I am very excited to hear about your PiDP-11 project. I also would urge you to go to 1:1 scale for the PDP-11/70 panel and also utilize the classic Purple and Pink color scheme. One other comment I would make

Re: PDP2011 board

On 10/22/2015 6:11 PM, jwsmobile wrote: I'm not sure if the author of this nice bit of work is on here, but I'm looking at a board for this, the Altera DE-1. Unfortunately there are a plethora of Altera DE-1 boards and much puzzlement by me as to whether this is the right one. The page with

Re: PDP2011 board

On 10/22/2015 10:09 PM, ben wrote: On 10/22/2015 10:54 PM, Don North wrote: For PDP2011 direct compatibility then the path of least resistance is probably the DE0-NANO with CycloneIV for $79. I have several; nice little boards for experimentation. You can get it from Adafruit ($99) or Digikey

VAX 730 was Re: Self modifying code, lambda calculus - Re: ENIAC programming

On 9/18/2015 10:15 PM, tony duell wrote: Simple answer. The control store functionality had to fit in the available space on one hex sized card, and 16K density DRAM was the only option. Allocating additional space to use 4K or 1K SRAM would have pushed the CPU design to an additional board,

Re: Self modifying code, lambda calculus - Re: ENIAC programming

On 9/18/2015 9:51 PM, tony duell wrote: The VAX-11/730 would have to have the microcode on TU58, as that is the console media. Quite possible that it actually do load the microcode from there at power up. I've heard that those machine were slow in so many ways... :-) The 11/730 has no microcode

Re: SIMH PDP-8 question

On 9/18/2015 7:08 AM, Vincent Slyngstad wrote: From: Charles: Thursday, September 17, 2015 6:46 PM Anyway, I'd like to do the same thing in SIMH (get the text file into Focal and then save it as a Focal program). Is there any way to do this with SIMH? Can I assign the text file to a paper tape

Re: KiCad Footprint ??

On 12/20/2015 5:02 AM, GerardCJAT wrote: Speaking of KiCad Yesterday, I tried for the first time KiCad, and my first board design with it. The very first part I was looking for I was not able to locate it. Is it because I am a newbe or because this part does not exist yet, beeing "too

Re: Piggybacking 74LS logic chips to confirm a suspected fault

Or it is a mechanical fault due to a package/die bond wire becoming an open circuit. This could happen to where the wire joins to either the package or the die pad, or a wire that was fused due to excess current. Hard to tell unless you decap the package. On 12/22/2015 1:32 PM, Alexandre

Re: Has Anyone Written PDP-8 .XOR. Code Using the MQ Register (Without the EAE)?

On 12/23/2015 10:50 PM, Don North wrote: On 12/23/2015 7:14 PM, Christian Gauger-Cosgrove wrote: On 23 December 2015 at 13:44, CLASystems <clasyst...@gmail.com> wrote: Ironically, the shortest and fastest seems to be avoidance of the MQ altogether [thus making it work on ANY model].

Re: UNIBUS M9312 ROMS

instructions as data values (and vice versa). -- Don North AK6DN

Re: UNIBUS M9312 ROMS (Don North)

On 6/10/2016 4:56 AM, Michael Thompson wrote: From: Don North <ak...@mindspring.com> Subject: Re: UNIBUS M9312 ROMS Actually the page listed below is a big out of date with respect to some M9312 images (it is not an up to date mirror). The up to date page is at: http://ak6dn.dyndns.org/

Re: UNIBUS M9312 ROMS

s just blank filled. An 82S129 (or equiv) 256x4 tristate device works just as well as a boot PROM as the upper address pin becomes an active low chip select, and this pin is pulled low on the M9312 board. -- Don North AK6DN

Re: UNIBUS M9312 ROMS

s just blank filled. An 82S129 (or equiv) 256x4 tristate device works just as well as a boot PROM as the upper address pin becomes an active low chip select, and this pin is pulled low on the M9312 board. -- Don North AK6DN Actually the page listed below is a big out of date with respect t

Re: UNIBUS M9312 ROMS

Mike As it happens the 23-760A9 TT/PR boot PROM does this copy by building a bootstrap sequence in RAM, and then jumping to it. Once it is built it is not self modifying, however. Ref: http://ak6dn.dyndns.org/PDP-11/M9312/23-760A9/23-760A9.lst -- Don North AK6DN

Re: AT 3b2 vs SCSI2SD drive replacement

esrc.com/mediawiki/index.php?title=SCSI2SD#Purchase to find links to vendors Links to firmware updates and tools here: http://www.codesrc.com/mediawiki/index.php?title=SCSI2SD#News I have no vested interest in SCSI2SD, other than being a very satisfied user. Don -- Don North AK6DN

Re: Need cheap source for anti-static chip tubes

On 1/16/2016 2:04 PM, Steven Hirsch wrote: Title says it. Perhaps I'm being stupid about search terms, but I'm not finding much of anything on eBay. One seller has TSOP tubes, but I need plain, old 300mm DIP tubes. End plugs and pins for them as well. Plenty of companies offering them on

Re: DL11 configuration for pdp11gui

On 6/26/2016 12:26 PM, Fritz Mueller wrote: Hi folks, I've started to look into hooking up pdp11gui to my 11/45 w/ M9301. Does anybody here know how the console DL11 should be configured for this wrt. data bits, parity, stop-bits? I haven't seen this mentioned in the documentation or

Re: options for replacing failed small ROMs in PDP-11

On 6/24/2016 4:36 PM, Fritz Mueller wrote: Hi All, In bringing up and debugging my PDP 11/45, I found that one of my GRA (M8101) spares has a failed ALU subsidiary ROM. It's a pretty standard little 32x8 ROM in a 16-pin DIP, and the truth table is in the 11/45 print set. I wonder what the

Re: DL11 configuration for pdp11gui

> From: Don North > Mostly PDP11GUI does not care, either 7b or 8b. I'm kind of surprised to hear that; I assumed that PDP11GUI can download binaries, and for that, 8-bit is kind of necessary? PDP11GUI reads papertape files as 8b binary, but on download translates the output to

Re: VAX 11/730 quickie

On 2/24/2016 1:11 PM, Mike Ross wrote: Why are you using MRSP mode (-m switch)? Do you know that is absolutely required? For VAX-11/730 console yes it is absolutely required as far as I know; everything I've read about people using emulation there says that it is. Mike Yes it appears that is

Re: VAX 11/730 quickie

8' info: tu58 tape emulator v1.4j (NF6X fork) info: (C) 2005-2014 Don North <ak...@mindspring.com>, (C) 1984 Dan Ts'o info: serial port /dev/tty.usbserial at 38400 baud info: MRSP mode enabled (NOT fully tested - use with caution) info: TU58 emulation start info: R restart, S toggle send init, V

Re: Which RT-11 for an 11/03

On 3/10/2016 5:24 PM, Richard Cini wrote: Gary, et. al.-- Ok, I spent some time trying this again, and here’s what I did. The system is very basic — LSI-11 CPU, 32kw of RAM and two SLU cards. Using PDP11GUI and TU58em emulator. XXDPD2D tape image loads and runs properly with this

Re: Which RT-11 for an 11/03

Well looks like I have been living in the past ... I have been using v3.9 SIMH from the SIMH website (the 'legacy' version) and have now gone an upgraded to the github v4.0 version. This one it appears has supported the serial virtual TU58 device since mid 2015 (at least by comment dates). I

Re: Which RT-11 for an 11/03

Whoops slight correction .. . the TU58 protocol supports a 16b block number, so it is 65536 blocks of 512B, or 32MB maximum. On 3/12/2016 3:55 PM, Don North wrote: Well looks like I have been living in the past ... I have been using v3.9 SIMH from the SIMH website (the 'legacy' version

Re: Which RT-11 for an 11/03

ck resolution: 1ms Time taken by msleep(1): 1ms OS: CYGWIN_NT-6.1-WOW lenovoS30w7 2.4.1(0.293/5/3) 2016-01-24 11:24 i686 Cygwin git commit id: b304d7f4 PDP-11 simulator configuration On 3/12/2016 3:58 PM, Don North wrote: Whoops slight correction .. . the

Re: Which RT-11 for an 11/03

00(RX_CSR), access=0-Read) ... DBG(930943)> TDC IRD: RX_CSR: DONE1 IE0 DBG(930945)> TDC RRD: td_rd(PA=17776502(RX_BUF), access=0-Read) DBG(930945)> TDC IRD: RX_BUF: ERR0 OVR0 RBRK0 DAT=0x20 <---DATA=20 DBG(930947)> TDC RRD: td_rd(PA=17776500(RX_CSR), access=0-R

Re: Which RT-11 for an 11/03

On 3/10/2016 7:02 PM, j...@cimmeri.com wrote: On 3/10/2016 9:36 PM, Richard Cini wrote: Separately… John — the SLUs are at what I think are the standard addresses and vectors (per the Heathkit and DLV11-J manuals) and the ODT and TU58EM work. I don’t know what RT-11 is looking for but the

Re: Which RT-11 for an 11/03

sim_data_trace(ctlr->dptr, >uptr[ctlr->unitno], ctlr->obuf, "Boot Block Data", ctlr->olen, "", TDDEB_DAT); sim_activate (ctlr->uptr+ctlr->unitno, td_ctime);/* sched command */ } break; case TD_OPCNT:

Re: Which RT-11 for an 11/03

Ok, filed as: https://github.com/simh/simh/issues/285 On 3/12/2016 11:14 PM, Don North wrote: Fixed! sim> set cpu 11/34 256K fpp sim> set tdc enable sim> attach tdc0 tu58.dsk sim> b tdc0 BOOTING UP XXDP-XM EXTENDED MONITOR XXDP-XM EXTENDED MONITOR - XXDP V2.5 REVISION: F0 BOO

Re: Imaging RX02 disks for simh (was: Re: MU-BASIC V2 and RT-11 V03B distribution disks.)

On 3/6/2016 8:56 AM, Brian Walenz wrote: How the heck do you copy an RX02 disk for use in simh? I've been trying to transfer RX02 images between simh and a real PDP11 (that has only two RX02's, console, and ethernet). So far, I've only attempted sending an RX02 image from the PDP to simh, but

Re: PDP-8/e - Front panel switch reproductions and front panel PCB?

On 3/2/2016 11:16 AM, Anders Nelson wrote: I found switch levers and a mounting frame design ( http://www.thingiverse.com/thing:360853) that I would like to have casted with molded-in color, close to the originals as reasonable. Has anyone already done this that I can simply buy from? If any

Re: General Question about UNIBUS backplanes

The M9312 can be setup to also act as a UNIBUS terminator card, and can reside in the A-B position of the last UNIBUS backplane slot (ie, the 'UNIBUS out' slot). Some of the jumpers on the card need to be configured to allow this, the M9312 technical manual gives the exact jumper configuration

Re: General Question about UNIBUS backplanes

g: Web: vintagecomputer.net Twitter: @billdeg <https://twitter.com/billdeg> Youtube: @billdeg <https://www.youtube.com/user/billdeg> Unauthorized Bio <http://www.vintagecomputer.net/readme.cfm> -- Don North AK6DN

Re: PDP-11/34a hung bus problem.

On 5/14/2016 2:41 PM, Noel Chiappa wrote: > From Ed Groenenberg > - insert both CPU cards, KY11-LB card & bootstrap card, 5 full grant > cards, DL11-W and bus terminator card. > ... > - cntrl + boot shows register dump at printer. > ... > All looks ok I'm

Re: UNIBUS/QBUS interface chips Was: Re: MEM11 update

On 5/2/2016 7:04 AM, Mattis Lind wrote: The following chips have been used by DEC to interface to the QBUS, and I have seen many of the above chips (e.g. 8641's) used there too, so I think chips seen on one bus could be used on the other: Drivers: 7439 - Various - Quad NAND Transceivers:

Re: [SPAM key] - Re: memory map for RT-11 v 5

On 7/26/2016 7:17 PM, Jerome H. Fine wrote: On Sunday, July 24th, 2016 at 14::29:59 -0700, Don North wrote: >On 7/24/2016 8:06 AM, william degnan wrote: >On Jul 24, 2016 8:58 AM, "Jerome H. Fine" <jhfined...@compsys.to> wrote: >On Wednesday, July 20th, 2016 at

Re: memory map for RT-11 v 5

On 7/24/2016 2:37 PM, Paul Koning wrote: On Jul 24, 2016, at 11:06 AM, william degnan wrote: ... Attempts to boot from RT11SJ.SYS under V04.00 of RT-11 with 24K bytes of memory were successful. Attempts to boot with 16K bytes of memory were also successful. An RK05 was

Re: PDP-8 _Introduction_to_Programming_ & _Programming_Languages_(Scanned) Covers Needed

On 8/2/2016 9:18 PM, Cameron Kaiser wrote: Does anyone have DEC's PDP-8 _Introduction_to_Programming_, Editions 3 and/or 4 and/or the PDP-8 _Programming_Languages_ handbooks? I have a 4th edition PDP-8 Introduction to Programming. I'm not willing to part with it and I don't currently have a

Re: Front Panel - Update. - PDP=8/i and PDP-8/l - Bezels - PDP-11

On 8/13/2016 6:20 AM, Christian Gauger-Cosgrove wrote: On 13 August 2016 at 08:07, Noel Chiappa wrote: I can't recall any other models with front panels? (Well, the /74, but IIRC there are none of those extant outside museums - although people might want some for

Re: re-initialize PDP 11 BASIC?

On 6/30/2016 10:29 AM, william degnan wrote: I seem to remember there is an entry point that one can use to reinitialize BASIC already loaded into core memory, with the intention of re-answering the questions about MEMORY SIZE, Use SIN?, etc. Is this correct? I looked in the docs I have b ut I

Re: quick omnibus question

I would also do a cleaning of your empty backplane with a good vacuum cleaner nozzle. It is not uncommon for bits of conductive detritus to fall into the backplane over time. Given that the pins are adjacent on the connector it might be a possible cause. Vacuuming out any stuff that has

Re: Short test programs for pdp 11/34

On 9/23/2016 6:15 PM, Paul Popelka wrote: You might try looking at the M9312 proms that Don North has made available here: http://www.ak6dn.com/PDP-11/M9312/ If you have an M9312 in your system it will have the basic console prom in it. There are listings of the prom contents on that web page

Re: UNIBUS M9312 ROM type identification

On 9/6/2016 9:23 AM, JP Hindin wrote: Greetings; My googlefu is failing me and I was wondering if someone might be able to help me identify one of the boot ROMs present in an M9312 bootstrap/term board. The board has three ROMs, an RX01 (042130), an RX02 (042131) and then a mystery code -

Re: UNIBUS M9312 ROM type identification

On 9/6/2016 11:55 PM, Don North wrote: On 9/6/2016 9:23 AM, JP Hindin wrote: Greetings; My googlefu is failing me and I was wondering if someone might be able to help me identify one of the boot ROMs present in an M9312 bootstrap/term board. The board has three ROMs, an RX01 (042130

Re: PDP-8 diagnostic tests

On 8/23/2016 12:31 PM, Scott Baker wrote: Hi, I have written a PDP-8 VHDL model and I have it running in an FPGA https://github.com/scottlbaker/PDP8-SOC At this time it has passed a basic DEC diagnostic instruction test but I found some interesting things when getting that instruction test to

Re: PDP-8 diagnostic tests

On 8/24/2016 2:21 AM, Pontus Pihlgren wrote: On Tue, Aug 23, 2016 at 12:31:42PM -0700, Scott Baker wrote: Hi, 1) DEC documentation which more fully describes all the instruction set (in more detail than the PDP-8 handbook) Not DEC documentation but a good resource:

Re: DEC TC11 maindec listings?

On 9/24/2016 8:32 PM, Al Kossow wrote: I had it on fiche, which I scanned this afternoon. It should be up on the bitsavers mirrors by morning PDT under pdp11/xxdp along with rev E of the XXDP+ users guide. I'll probably also do the RX02 diags if I can find them for Don, though he may have them

Re: [TUHS] Booting PDP-11's from RX02's

On 10/29/2016 2:32 PM, Ron Natalie wrote: I think just like everything else the boot rom just pulls in the first sector of the disk. I had RX02s on many of the BRL Gateways (my implementation that replaced your MIT Gateway while you were in exile). We put a V6 file system and I must have had a

Re: MACRO11

And what about this one? https://github.com/Rhialto/macro11 (forked from shattered/macro11 it appears...) So which one of the three versions (at least, maybe more) is the 'preferred' ? On 11/9/2016 7:52 AM, Jörg Hoppe wrote: Hi, I was notified that my fork of R. Krebiehls code was already

Re: DEC bus transceivers

On 10/24/2016 1:18 PM, David Bridgham wrote: On 10/24/2016 01:37 PM, allison wrote: The voltages are based on TTL levels. What are the unique voltages? The QBUS spec from the 1979 Bus Handbook (the Unibus levels are the same): Input low voltage (maximum): 1.3 V Input high voltage (minimum):

Re: [TUHS] Booting PDP-11's from RX02's

On 10/30/2016 5:47 AM, Noel Chiappa wrote: > From: Don North <no...@alum.mit.edu> > .. the hardware bootstrap reads track 1 sectors 1, 3, 5, 7 Ah, thanks for that. Starting to look at the code, I had missed the interleave. So does DEC do anything with track 0, or is it

Re: SCSI Tape Emulator

Something new: http://embedded-computing.com/news/launch-scsiflash-tape-replacement-obsolete-end-of-life-tape-drives/ but no price listed. Not targeted at the classic computing hobbyist, so probably going to be expensive. On 10/10/2016 3:34 PM, Al Kossow wrote: "9-track tape emulator"

Re: pdp-11 assembly standards

On 1/8/2017 9:10 PM, Brent Hilpert wrote: OK, what was the standard (if there was one) number-base syntax for PDP-11 assembler? Despite all the PDP-11 assembly info on web sites, this seems to be a buried bit of info. One assembler doc uses a prefix of "", another specifies octal as default

Re: booting os/8

On 3/22/2017 4:25 PM, Bill Gunshannon wrote: Look here: http://www.vcfed.org/forum/blog.php?12663-AK6DN for info on my Arduino based RX02 emulator using a microSD card. Works on RX11/RXV11/RX8E as RX01, RX211/RXV21/RX28 as RX02. Passes DEC hardware diagnostics. Reinhard has done an FPGA

Re: booting os/8

On 3/22/2017 5:03 PM, Don North wrote: On 3/22/2017 4:25 PM, Bill Gunshannon wrote: Look here: http://www.vcfed.org/forum/blog.php?12663-AK6DN for info on my Arduino based RX02 emulator using a microSD card. Works on RX11/RXV11/RX8E as RX01, RX211/RXV21/RX28 as RX02. Passes DEC hardware

Re: booting os/8

On 3/22/2017 10:47 AM, Bill Gunshannon via cctalk wrote: From: cctalk [cctalk-boun...@classiccmp.org] on behalf of W2HX via cctalk [cctalk@classiccmp.org] Sent: Tuesday, March 21, 2017 11:49 PM To: General Discussion: On-Topic and Off-Topic Posts

Re: PDP-11: DR11-C to FPGA or 1284?

On 7/31/2017 10:52 AM, Fritz Mueller via cctalk wrote: On Jul 31, 2017, at 8:19 AM, Jay Jaeger wrote: I have Ethernet shield for my Arduino Uno, and I use that and a simple (in my case, perl, program to talk to the final destination device. I have two cables, one for each

Re: RX02 *.DSK convert to PDP11GUI Image format

On 8/15/2017 2:10 AM, Jerry Weiss via cctalk wrote: 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

Re: RX02 *.DSK convert to PDP11GUI Image format

On 8/14/2017 12:40 AM, Ulrich Tagge via cctalk wrote: Hi all, I have tried to find a specification about the DSK Image format, but have only found the the following: http://www.cpctech.org.uk/docs/dsk.html , which looks like the focus is more on CPC related Disks. Is there any detailed

Re: RX02 *.DSK convert to PDP11GUI Image format

On 8/13/2017 4:47 PM, Don North via cctalk wrote: On 8/13/2017 11:34 AM, Jerry Weiss via cctalk wrote: On Aug 13, 2017, at 12:59 PM, Ulrich Tagge <u.ta...@gmx.de> wrote: Hi Jerry, I have tried with PDP11GUI, but the first message says "The image contains only 505856 bytes, b

Re: RX02 *.DSK convert to PDP11GUI Image format

On 8/13/2017 11:34 AM, Jerry Weiss via cctalk wrote: 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

Re: TU-58 in simh

On 4/21/2017 4:25 PM, Brian L. Stuart via cctalk wrote: I've seen suggestion that TU-58s are emulated in simh on PDP-11s. However, I'm not seeing it in a show dev and my google-fu is failing me to find any info on how to use it. Any pointers on how to boot from a TU-58 image? TIA, BLS Using

Re: TU-58 in simh

On 4/21/2017 6:34 PM, Don North via cctalk wrote: On 4/21/2017 4:25 PM, Brian L. Stuart via cctalk wrote: I've seen suggestion that TU-58s are emulated in simh on PDP-11s. However, I'm not seeing it in a show dev and my google-fu is failing me to find any info on how to use it. Any pointers

Re: TU-58 in simh

On 4/21/2017 6:55 PM, allison wrote: On 04/21/2017 09:34 PM, Don North via cctalk wrote: On 4/21/2017 4:25 PM, Brian L. Stuart via cctalk wrote: I've seen suggestion that TU-58s are emulated in simh on PDP-11s. However, I'm not seeing it in a show dev and my google-fu is failing me to find

Re: PDP-11: DR11-C to FPGA or 1284?

On 7/31/2017 2:52 PM, Ethan Dicks via cctalk wrote: On Mon, Jul 31, 2017 at 1:52 PM, Fritz Mueller via cctalk wrote: On Jul 31, 2017, at 8:19 AM, Jay Jaeger wrote: I have Ethernet shield for my Arduino Uno, and I use that and a simple (in my case,

Re: PDP-11: DR11-C to FPGA or 1284?

On 7/30/2017 7:47 PM, Fritz Mueller via cctalk wrote: So, I have lately been using PDP11GUI to retrieve images of RK05 disk packs and to write images to these packs on a PDP-11. This is awesome, but its a bit frustrating that it takes a couple hours to read or write an image this way. I do,

Re: A little power circuit explanation please

On 8/22/2017 4:30 PM, Adrian Graham via cctalk wrote: Hi folks, Failing Atari PSU aside I remembered a question I had ages ago but never posted about the power circuit of another 80s home micro, the Enterprise 64. This machine is powered by a 2A 9V unregulated PSU and internally there’s a