Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-09 Thread Martin Bishop via cctalk
A nicely made yellow box with a rather poor manual - both lost in translation and limited in scope. Working on setting one to work, but can't get anything out of the serial port. In drives the punch, and the punched data verifies (based on a QL). In also drives the printer, although somewhat

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-09 Thread Martin Bishop via cctalk
t will need to search. -Eric On Sat, Apr 9, 2022, 4:56 PM Martin Bishop via cctalk mailto:cctalk@classiccmp.org>> wrote: A nicely made yellow box with a rather poor manual - both lost in translation and limited in scope. Working on setting one to work, but can't get anything out o

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-09 Thread Martin Bishop via cctalk
Remove all but the first jumper, and that may help with your issues. I > found at one point the jumper settings, but will need to search. > > -Eric > > > > On Sat, Apr 9, 2022, 4:56 PM Martin Bishop via cctalk < > cctalk@classiccmp.org> > wrote: > > >

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-10 Thread Martin Bishop via cctalk
umper, and that may help with your issues. I found at one point the jumper settings, but will need to search. -Eric On Sat, Apr 9, 2022, 4:56 PM Martin Bishop via cctalk mailto:cctalk@classiccmp.org>> wrote: A nicely made yellow box with a rather poor manual - both lost in translation a

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-10 Thread Martin Bishop via cctalk
Fred You have a good measure of my problem. As for my expertise: its 40 years since I left schoool with a PhD in Signal Processing, I'm currently designing with Xilinx Zynqs, and if the RS232 driver has to be pulled there is a Pace SX-80 on the bench in the workshop. I have a pair of light box

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-10 Thread Martin Bishop via cctalk
move all but the first jumper, and that may help with your issues. I > found at one point the jumper settings, but will need to search. > > -Eric > > > > On Sat, Apr 9, 2022, 4:56 PM Martin Bishop via cctalk < > cctalk@classiccmp.org> > wrote: > > > A nicely

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-10 Thread Martin Bishop via cctalk
help with your issues. I found at one point the jumper settings, but will need to search.   -Eric     On Sat, Apr 9, 2022, 4:56 PM Martin Bishop via cctalk wrote: A nicely made yellow box with a rather poor manual - both lost in translation and limited in scope. Working on setting one to work,

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-10 Thread Martin Bishop via cctalk
optimistic ... Martin -Original Message- From: cctalk [mailto:cctalk-boun...@classiccmp.org] On Behalf Of Chuck Guzis via cctalk Sent: 10 April 2022 03:29 To: Martin Bishop via cctalk Subject: Re: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working On 4/9/22 17:26, Martin

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-10 Thread Martin Bishop via cctalk
Chuck My error, you said 20 mA current loop, I bowdlerised it as parallel port. I have a punch with a parallel interface ... I can't recollect ever using a current loop interface on equipment, although I have met many in old documents. 4 .. 20 mA current loops reporting e.g. pressure actuate

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-10 Thread Martin Bishop via cctalk
Eric Thanks for the link and insight. $11, $12, $13, $14 $1B, $93 - preface with $1B (esc) and all should be well. Martin From: Eric Moore [mailto:mooreeric...@gmail.com] Sent: 10 April 2022 20:23 To: Martin Bishop Cc: General Discussion: On-Topic and Off-Topic Posts Subject: Re: Fanuc PPR

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader : Not quite working

2022-04-14 Thread Martin Bishop via cctalk
rst jumper, and that may help with your issues. I > found at one point the jumper settings, but will need to search. > > -Eric > > > > On Sat, Apr 9, 2022, 4:56 PM Martin Bishop via cctalk < > cctalk@classiccmp.org> > wrote: > > > A nicely made yellow box

RE: Advice on Desoldering an IC

2022-04-15 Thread Martin Bishop via cctalk
Rob I would imagine that an 11/24 CPU is at least a 4 layer board, with power planes and hopefully thermal reliefs at pins connected to a plane. The pins you will be having difficulty with are most likely on the Gnd or Vcc plane. I often leave those pins for last, once in the groove. And, I'

RE: Advice on Desoldering an IC

2022-04-15 Thread Martin Bishop via cctalk
If the Klein cutters are too bulky, you may care to investigate. Lindstrom 7191 https://uk.rs-online.com/web/p/cutters/3320341 are the usu first resort small cutters - they should be fine enough for 0.1" pitch ICs. A finer pair are Bondline 1570 https://www.bondline.co.uk/product/hand-tools-and

RE: Fanuc PPR - Paper Tape Punch, Printer and Reader

2022-04-19 Thread Martin Bishop via cctalk
An update on my fight with the PPR, also one of its cousins. https://www.cnczone.com/forums/general-cnc-machine-related-electronics/430874-cnc-engineering.html#post2505622 covers my RFI to the CNC community and provides a few pictures of a 19" rack reader integrated with a Zynq; load binary tape

RE: Not just slashed zeroes/ohs

2022-04-27 Thread Martin Bishop via cctalk
Not to forget the practice, found in places where clock(s) may be set to Zulu (as in UTC timezone), of indicating the datum by a Z with a vertical bar / slash through it - often below the 12 and about 30% of the size of the clock face, or centred and somewhat larger. Horizontal and no bar optio

RE: anyone ever connect a TU58 drive to a PDT-11/150 terminal port?

2022-05-18 Thread Martin Bishop via cctalk
XXDP is based on DOS-11 file structures. Some documentary sources FoMT. TU58 examples of XXDP binaries, and much more, can be found at https://www.ak6dn.com/PDP-11/TU58/ the .txt files contain file structure and directory listings. http://bitsavers.trailing-edge.com/pdf/dec/dectape/tu58/EK-0TU

RE: The TRS-80 Journey Continues

2022-05-25 Thread Martin Bishop via cctalk
I had dysfunctional switches on a heating system timer. The trade advice since replacements were unobtanium was open them up and clean the contacts with switch cleaner. The contacts were two "gold" plated pads bridged by pressing down conductive plastic with a textured finish : same design as

RE: Looking for DEC XXDP TU58 images

2022-06-01 Thread Martin Bishop via cctalk
http://www.retrocmp.com/tools/pdp-11-diagnostic-database/202-pdp-11-diagnostics-database Has info on ZQRC binaries and .bic / .bin images - loading is of course XFU. The .bic image is (essentially) in absolute binary paper tape format, which may or may not help with loading. ZQRC has been extra

RE: Free stuff in Somerset, England

2022-06-27 Thread Martin Bishop via cctalk
Philip A kind offer of DEC stuff to those of us in the UK May I express an interest in things Q-bus, LSI-11 and paper tape : other than any PT stuff, primarily backplanes, CPUs, memory and serial cards. I'm looking for components for Q-bus test rigs. Storage hardware and interfaces I shall

Information on Trend UTR 700 Paper Tape Reader and Facit 4060 Punch

2022-07-10 Thread Martin Bishop via cctalk
Google turns up very little specific information on either of these devices, e.g. nil return from bit savers. The best leads I have are: - The UTR 700 was badge engineered by Ferranti into FM1600B systems, one of which fetched up at the Centre for Computer History, Cambridge, England; perhaps w

RE: Information on Trend UTR 700 Paper Tape Reader and Facit 4060 Punch

2022-07-11 Thread Martin Bishop via cctalk
Errata : Trend UDR 700, not UTR -Original Message- From: Martin Bishop via cctalk [mailto:cctalk@classiccmp.org] Sent: 11 July 2022 00:25 To: General Discussion: On-Topic and Off-Topic Posts (cctalk@classiccmp.org) Cc: Martin Bishop Subject: Information on Trend UTR 700 Paper Tape

RE: Information on Trend UTR 700 Paper Tape Reader and Facit 4060 Punch

2022-07-11 Thread Martin Bishop via cctalk
The Facit 4060 appears to be from the 1968 - 1969 period The Trend UTR 700 from ~1980, based on IC date codes Martin -Original Message- From: ED SHARPE via cctalk [mailto:cctalk@classiccmp.org] Sent: 11 July 2022 08:02 To: cctalk@classiccmp.org Cc: ED SHARPE Subject: Re: Information on

RE: Information on Trend UTR 700 Paper Tape Reader and Facit 4060 Punch

2022-07-12 Thread Martin Bishop via cctalk
On Mon, Jul 11, 2022 at 7:32 AM Martin Bishop via cctalk wrote: > > Google turns up very little specific information on either of these devices, > e.g. nil return from bit savers. > > The best leads I have are: > - The UTR 700 was badge engineered by Ferranti into FM1600B syste

[cctalk] Re: Stuff available in England

2022-09-02 Thread Martin Bishop via cctalk
Andrew / David, I'm in Dorset and could collect anytime from this evening (Fri 2 Sep 22) on through the w/e The 1" tape is of particular use to me (punches to feed), the DEC brochures I would also value, the other consumables I would redistribute for you (via ClassicCmp) Best Regards Martin

[cctalk] Re: Inline Serial Device?

2022-11-13 Thread Martin Bishop via cctalk
IMHO, AI is bull Martin -Original Message- From: Paul Koning via cctalk [mailto:cctalk@classiccmp.org] Sent: 13 November 2022 15:10 To: cctalk@classiccmp.org Cc: Paul Koning Subject: [cctalk] Re: Inline Serial Device? > On Nov 12, 2022, at 1:08 PM, Anders Nelson via cctalk > wrote:

[cctalk] Re: Guidance on repairing Dec PDP 11 System

2022-11-27 Thread Martin Bishop via cctalk
Have you run any (paper tape) diagnostics ? I genuflect to paper tape as XXDP and TU58 diagnostics are broadly a continuum from the paper tape days. The seminal 11/40 diagnostics are broadly applicable to all machines (noting that some addressing modes were implementation dependent ...) and th

[cctalk] Peripherals available in Dorset, England : Free to a Good Home

2022-12-03 Thread Martin Bishop via cctalk
Folks The following job lots are available as described but untested, stored in the attic / house since last use : UMMV Lot A : Matsui B&W 13" 1420T SIL UHF & Scart 230V (may be useful as a retro monitor esp as exhibit) [operable when last in service ~?] Lot B : Samsung CLP-350 A4 Color Laser E

[cctalk] CORRECTION: Peripherals available in Dorset, England : Free to a Good Home

2022-12-03 Thread Martin Bishop via cctalk
ft...@janefield.net (NOT .org) Martin -Original Message- From: Martin Bishop via cctalk [mailto:cctalk@classiccmp.org] Sent: 03 December 2022 18:07 To: General Discussion: On-Topic and Off-Topic Posts (cctalk@classiccmp.org) Cc: Martin Bishop Subject: [cctalk] Peripherals available

[cctalk] Re: DLV11 M7940 SLU header wire colours?

2022-12-22 Thread Martin Bishop via cctalk
Steve You will find some additional write up of the DLV11J (M9740) in LSI11SeytemsServiceManualAug81.pdf page no ~270 et seq see e.g. https://bitsavers.org/pdf/dec/pdp11/LSI-11_Systems_Service_Manual_Aug81.pdf However, additional enlightenment is limited to the cab kit and MP part numbers, e.g.

[cctalk] Re: unpleasant odor from VT100

2022-12-22 Thread Martin Bishop via cctalk
Peter If you are still listening through the "on topic" noise - see below Martin >>I had something similar with a VT220. I didn't get around to investigating >>it before the flyback transformer failed :-( >>I can only suggest to run it for a short time with the cover off and the >>lights out

[cctalk] Re: How to print old files.

2023-01-01 Thread Martin Bishop via cctalk
Folks - wishing all a Good New Year Ben The first ingredient must be a printer with a a suitable font table, in these times of soft fonts that should be a given or tractable. The second element is to convert to and use an MCS / multibyte character representation - which can differentiate _ ^ and

[cctalk] Re: How to print old files.

2023-01-01 Thread Martin Bishop via cctalk
Ben I think you have the essence of a solution, using the Unix filter paradigm at user or driver level. Your desire to retain the original file format(s) is very sensible, it is always best to record "raw" data - for the greatest fidelity. The ISO 7-layer model provides a paradigm for data transp

[cctalk] PDP-11 System Identification Register

2023-01-04 Thread Martin Bishop via cctalk
Can't find very much information about the PDP-11 System Identification Register : RO at 7764 The occasional processor handbook says not implemented or the 11/xy reports num. Interogative : information sources, e.g. a tabulation of known values Martin

[cctalk] Re: Low cost logic analyzer

2023-03-14 Thread Martin Bishop via cctalk
Paul Some options for consideration, not all meeting your specific requirement https://www.pctestinstruments.com/index.asp 34b wide, sync (200 MS/s) or async (500 MS/s) operation, fights with Win11 - driver upgrade required Had one for ~15 years, now has a few dead channels, merits consideratio

[cctalk] Re: Low cost logic analyzer

2023-03-15 Thread Martin Bishop via cctalk
g, buffering and displaying would be done by the tool chain. -- Sytse From: Martin Bishop via cctalk [mailto:cctalk@classiccmp.org] Sent: 14 March 2023 07:51 https://digilent.com/shop/digital-discovery-portable-usb-logic-analyzer-and-digital-pattern-generator/ 32 ch at 200 MS/s and pl

[cctalk] Wanted PDP-11 Paper Tape Software Source Tape Images

2023-03-21 Thread Martin Bishop via cctalk
Can anyone point me to the source paper tapes for the classic Paper Tape Software programmes packages ? The IOX, ODT, FPMP and loader/dumper source paper tapes [e.g. DEC-11-XIOXA-A-PA1 & 2] are on bit savers, but those for the assemblers / linkers seem not to be. That the assembler / linker so

[cctalk] Re: LSI-11 Console-ODT

2023-03-23 Thread Martin Bishop via cctalk
The detail of each monitor (11/03, 11/23+, KXT-11) differs, and the LSI-11/03 was an early design. However, some monitor source code is available and will provide definitive answers; see e.g. - http://bitsavers.trailing-edge.com/pdf/dec/pdp11/1121/EK-KXTCA-HR-001_KXT11-CA_ROM_Listing_198406.pd

[cctalk] Re: Wanted PDP-11 Paper Tape Software Source Tape Images

2023-03-24 Thread Martin Bishop via cctalk
This is a good place to start to look for papertapes. Bill On Tue, Mar 21, 2023 at 7:39 AM Martin Bishop via cctalk < cctalk@classiccmp.org> wrote: > Can anyone point me to the source paper tapes for the classic Paper > Tape Software programmes packages ? > > The IOX, ODT,

[cctalk] Re: Current Loop Schematics

2023-05-02 Thread Martin Bishop via cctalk
Led Driver ICs may merit consideration, e.g. https://uk.rs-online.com/web/p/led-driver-ics/7377975 for 20 mA. However, they usu have a not insignificant voltage drop (a few Volts). I have used lots of 10 mA versions for sensing switch / relay closures, typically with an ACPL-217 as sense elem

[cctalk] Re: Super I/O chips

2023-05-24 Thread Martin Bishop via cctalk
https://www.microchip.com/en-us/products/embedded-controllers-and-super-io https://www.microchip.com/en-us/parametric-search.html/674 >From a QL 0.5 mm pitch QFP will be as good as it gets, and a lot of the parts >are NRFND, EoL, etc Interesting that these parts continue to exist. Ano option w

[cctalk] Re: Source for NEW (unused) punch tape

2023-06-08 Thread Martin Bishop via cctalk
The puches I have knowledge of do all 9 holes. Similarly, the blank tape stock (of my acquaintance) is unpunched. Martin -Original Message- From: William Sudbrink via cctalk [mailto:cctalk@classiccmp.org] Sent: 08 June 2023 17:34 To: 'General Discussion: On-Topic and Off-Topic Posts' Cc:

[cctalk] Re: Greaseweazle part 2

2023-06-12 Thread Martin Bishop via cctalk
It is called feedback - directly given but fair and polite. Delays, filtering, non-linearities, distortion, etc reduce its effectiveness. Martin PS I shall omit, as unnecessary, a discourse on the benefits of feedback -Original Message- From: Tom Hunter via cctalk [mailto:cctalk@classic

[cctalk] Re: Need AUI cable

2023-06-28 Thread Martin Bishop via cctalk
50 pin DD connectors are alive and well on the backplanes of some day job ATRs with new electronics in the old VME form factor. 3 x 16 STPs pass through them very nicely en route to front panel connectors. Both dense, decently robust and legacy compliant. More generally, if you have access to

[cctalk] Re: Talking PDP11

2023-07-09 Thread Martin Bishop via cctalk
You just did use it to play "audio" :<) The 6 us settling time corresponds to a sampling rate of ~167 kHz, not that you will ever get there or would wish to. The theoretical (real) sampling rate required for a given bandwith is Fs = 2 Bw. That requires brick wall filters and it is a lot of wor

[cctalk] Re: Talking PDP11

2023-07-09 Thread Martin Bishop via cctalk
text to speech of 1980's (i.e. contemporary period) standard. Have fun Martin -Original Message- From: Douglas Taylor via cctalk [mailto:cctalk@classiccmp.org] Sent: 10 July 2023 02:20 To: Martin Bishop via cctalk Cc: Douglas Taylor Subject: [cctalk] Re: Talking PDP11 Wow! Actu

[cctalk] Re: Talking PDP11

2023-07-11 Thread Martin Bishop via cctalk
For info on DAC internals, have a look at https://www.analog.com/en/education/education-library/analog-digital-conversion-1986.html Part 2 details basic A/D & D/A architectures Current output converters are: - less common than voltage output DACs - and, if a ladder conversion architecture is use

[cctalk] Re: Logic Analyzers - HP/Agilent 16700B or 1670G?

2023-08-20 Thread Martin Bishop via cctalk
You could try an AMD (ex Xilinx) logic analyser ... Basically, use the logic analysis capabilities provided (free) by FPGA OEMs to construct a DIY LA. In brief, the LA is in the FPGA libraries / GUI, you do of course have to wire them up both inside (Vivado) and outside (level shifters and cop

[cctalk] Re: Signetics N8220B ??

2023-08-28 Thread Martin Bishop via cctalk
Package type, pin count, date code, other hints Either number might be a yyww date code, one of them probably is Giggle offers numerous responses to 7536 IC and 8220 IC Old enough they mght be in an IC cross reference book Good luck Martin -Original Message- From: Holm Tiffe via cctal

[cctalk] Re: TI 960

2023-09-05 Thread Martin Bishop via cctalk
Some of the Analog Devices Sharcs have similar interconnection topologies, e.g. the ADSP-21160 had six bytewide link ports, doubtless an expressio of the sincerest form of flatery. Subsequent Sharcs were more targeted to single DSP functionality. The baremetal 12 Sharc boards I worked on were

[cctalk] Re: For Fred, especially: "Everything I know about floppy disks"

2023-09-11 Thread Martin Bishop via cctalk
>Did Algol in general have memory leaks?,or is just C and Windows. This is very much from recollection of programming in Algol 60 & 68, 40+ years ago. Algol60 did not have heap storage or pointers IIRC Therefore no potential for memory leaks Algol68R had fairly agressive garbage collection,

[cctalk] Re: Concorde cabin display technology?

2023-09-16 Thread Martin Bishop via cctalk
The UK Concorde heritage sites may provide contacts / answers e.g. https://www.heritageconcorde.com/duxford Martin -Original Message- From: Shoppa, Tim via cctalk [mailto:cctalk@classiccmp.org] Sent: 16 September 2023 16:53 To: cctalk@classiccmp.org Cc: Shoppa, Tim Subject: [cctalk] Co

[cctalk] Re: Good C to FPGA/PLA compiler

2023-09-22 Thread Martin Bishop via cctalk
100% disagree, Verilog and SV are bad tools - very easy to do a bad job with - penknife grade. Verilog however is very c like in that it is untyped and prone to all the consequent tar pits; see above. VHDL is a good tool which is typed and like the Algol family of languages precludes many foll

[cctalk] Re: Good C to FPGA/PLA compiler

2023-09-22 Thread Martin Bishop via cctalk
Mike The level you are working at, inspecting busses, is not really where C like tools are targeted - however ... I shall infer that an 8/E debug board has the functionality of a bus monitor / logic analyser front end. The recent discussion <> covered a lot of similar ground : worth reviewing

[cctalk] Re: Good C to FPGA/PLA compiler

2023-09-22 Thread Martin Bishop via cctalk
Chuck, Your point is wholly valid, although the core will run more at 1 GHz than 200 MHz. The UniBone http://retrocmp.com/projects/unibone is a UniBus board capable of monitoring the unibus and of emulating CPU / rotating rust / memory / ... With the bulk of the logic in c on an Arm Processor

[cctalk] Re: Good C to FPGA/PLA compiler

2023-09-22 Thread Martin Bishop via cctalk
Mike An M0 will require an FPGA below it to interact with the OmniBus A BeagleBone, using the PRUs - which are ~microcoded, would be in with more of a chance Industrial grade SoCs / FPGAs should have no difficulty Martin -Original Message- From: Mike Katz via cctalk [mailto:cctalk@cla

[cctalk] Re: Good C to FPGA/PLA compiler

2023-09-22 Thread Martin Bishop via cctalk
mpiler > On Sep 22, 2023, at 3:59 PM, Martin Bishop via cctalk > wrote: > > 100% disagree, Verilog and SV are bad tools - very easy to do a bad job with > - penknife grade. > > Verilog however is very c like in that it is untyped and prone to all the > consequent ta

[cctalk] FW: Re: Good C to FPGA/PLA compiler

2023-09-23 Thread Martin Bishop via cctalk
Mike A key factor is that 60 years have passed: - the PDP8/E (and its chums) were core store machines - the bus time slots are 300 + 250 + 350 + 300 ns = 1200 ns [T1 T2 T3 T4 phases of core access] - FPGA fabric can trivially run at 100 MHz, and talk to an AXI bus + Arm Core

[cctalk] Re: Good C to FPGA/PLA compiler

2023-09-23 Thread Martin Bishop via cctalk
ll so I can go to full surface mount if I have to but that will increase the cost of the boards. On 9/22/2023 6:53 PM, Martin Bishop via cctalk wrote: > Mike > > An M0 will require an FPGA below it to interact with the OmniBus > > A BeagleBone, using the PRUs - which are ~microcoded

[cctalk] Re: Good C to FPGA/PLA compiler

2023-09-23 Thread Martin Bishop via cctalk
Paul A Zynq '30 has 125,000 Logic Cells, a ZU4EG has 192,000 logic cells. Both can be synthesised with the free tools. You may of course get more LCs on a supported FPGA, vice SoC. Logic cell is a marketing term, the engineering equivalent would be "LUT4 + FF". Google assures me that a Logi

[cctalk] Re: Tadpole/RDI UltraBooks - UNIX notebooks - species needs rescue...

2023-09-24 Thread Martin Bishop via cctalk
Once upon a time DS... was (other things apart) Dallas, then Maxim, now Analog Devices. Mouser says DS 1553 & DS1643 are obsolete. However, there appears to be aftermarket activity: - https://www.radwell.co.uk/en-GB/Search/?q=ds1553 - https://www.radwell.co.uk/en-GB/Search/?q=ds1643 - which im

[cctalk] Re: IBM 727 tape drive

2023-10-13 Thread Martin Bishop via cctalk
The valve audio afficionados / suppliers also offer both wisdom and components, e.g. https://skillbank.co.uk/psu/ and many other sites / blogs https://www.amazon.co.uk/Designing-Power-Supplies-Amplifiers-Second/dp/0956154549 https://shop.elsevier.com/books/valve-amplifiers/jones/978-0-08-096640

[cctalk] Re: IBM 727 tape drive

2023-10-13 Thread Martin Bishop via cctalk
The cost of implementing a linear regulator will be modest, measured in £s rather than 10's for the components. Much of the actual cost will be in the pin board layout; FWIW I have found 3 mm PTFE sheet, drilled as required and fitted with crimp castle posts works nicely. One merit of (wide ra

[cctalk] Re: Address wrapping in PDP-11 MMU

2023-11-17 Thread Martin Bishop via cctalk
EK-DCJ11-UG-Pre DCJ11 Microprocessor User's Guide says it will abort [the first processor guide on the shelf] $4.5.2.2 (p4-7) Page Length Field ... "The block number of the virtual address is compared against the page length field to detect length errors" ... $4.7.1 MMR0 <14> Abort Page Length

[cctalk] Re: Address wrapping in PDP-11 MMU

2023-11-17 Thread Martin Bishop via cctalk
OK, a faux descriptor would work round the documented checks which are on block number rather than EA - there is a hardware overide I'm delighted to hear that RSTS won't play along and set up for EA overflow Martin -Original Message- From: Paul Koning [mailto:paulkon...@comcast.net] Se

[cctalk] Re: WWVB

2024-01-14 Thread Martin Bishop via cctalk
Sceptical that MSF is a jammer for WWVB in North America. DCF (77k5, German) commonly provides better signal strength / reception than MSF in the UK. However, if RF is involved ... Martin -Original Message- From: Nigel Johnson Ham via cctalk [mailto:cctalk@classiccmp.org] Sent: 15 Janu

[cctalk] Re: Vmebus

2024-01-31 Thread Martin Bishop via cctalk
Ah, PPC VME cards, add VXworks, funky coprocessors, COTS IO and you have definitely got something best avoided : details would involve libations. The conduction cooled chassis are OK and worth repurposing. Contrariwise the VME bus is best avoided, whether classic 32b VME or the 64 bit revision.

[cctalk] Re: VCF SoCal

2024-01-31 Thread Martin Bishop via cctalk
<> One standard work is "The First Computers : History and Architectures" Ed Rojas, et al MIT Press; 2002; ISBN 0-262-68137-4 US : 5 sections Germany : 7 sections UK : 5 sections Japan : 2 sections as an indication of activity <> In the UK context, where there is on-line documentation of the IC

[cctalk] Re: VCF SoCal

2024-02-01 Thread Martin Bishop via cctalk
Would an optical paper tape reader pass muster ;<) ... FWIW mine has variable sped and stop pedal capabilities, so you can be fairly gentle / careful - the feed arrangements are most important Museum donations can be done well, see eg https://history.dcs.ed.ac.uk/archive/pdp8/ProgrammesAndManua

[cctalk] Re: Paper tape in casettes...

2024-02-27 Thread Martin Bishop via cctalk
>> I would love to see a PDP-8 with 1/2 size flip chips using today's smaller >> logic. Can you get the logic ? Especially the bus / backplane driving parts. https://retrocmp.com/projects/qbone/326-qbone-unibone-alternative-bus-drivers Q-bus transceivers (DS8641 being a classic) are unobtaini

[cctalk] Re: DEC Processor Books

2024-03-17 Thread Martin Bishop via cctalk
The Great Western Railway is said to have used the Swindon DO staff to pose their resturant and buffet car shots Martin -Original Message- From: Nigel Johnson Ham via cctalk [mailto:cctalk@classiccmp.org] Sent: 17 March 2024 15:44 To: cctalk@classiccmp.org Cc: Nigel Johnson Ham Subject

[cctalk] Re: VAX 4000 console SLU in need of some TLC

2024-03-22 Thread Martin Bishop via cctalk
https://www.rapidonline.com/assmann-wsw-a-20141-6-pin-rj12-socket-black-50-1451 Not an MMJ socket, but a cousin - the key is central not offset, and perhaps a different footprint / orientation (but not all that is available) - something like this might match the PCB footprint, but require retermin

[cctalk] Re: typical IC kits on Amazon and elsewhere

2024-03-30 Thread Martin Bishop via cctalk
Mouser pass the SN7404 test https://www.mouser.co.uk/c/?q=sn7404 SN74LS https://www.mouser.co.uk/c/?q=sn74ls&instock=y&normallystocked=y brings up 381 lines in stock; doubtless lots of package / packaging duplicates DS8641 (Q/U bus transceiver) and suchlike are of course quite another story :

[cctalk] Re: oscilloscopes

2024-04-03 Thread Martin Bishop via cctalk
rfgh -Original Message- From: Guy Fedorkow via cctalk [mailto:cctalk@classiccmp.org] Sent: 03 April 2024 16:02 To: cctalk@classiccmp.org Cc: Guy Fedorkow Subject: [cctalk] Re: oscilloscopes Vintage computer enthusiasts might want to keep track of where to find CRT-based analog oscillos

[cctalk] Re: oscilloscopes

2024-04-03 Thread Martin Bishop via cctalk
Ignore my last - incontinence or is it incompetence A fairly ordinary GPU, in a PC, could almost certainly provide an XY display with Z fade (long persistance phosphor). I use them for waterfall displays and they keep up - the data does of course arrive by E'net. Equally, FPGAs / SOCs can impl

[cctalk] Re: oscilloscopes

2024-04-07 Thread Martin Bishop via cctalk
A little digging later ... I implemented the waterfall display eight years ago, outputing to a 1280 x 1024 monitor. 1920 x 1080 was supported, but I was outputing 1 Ki pt FFTs. The hardware platform was a Xilinx Zynq. An indication of 4k video capabilities is https://xilinx-wiki.atlassian.ne

[cctalk] Re: Papertape-Reader Decitek 442A9: need manual/schematics

2024-05-16 Thread Martin Bishop via cctalk
It looks as though Decitek remain in business http://www.decitek.com/index.html Scan of a series 700 reader manual on bitsavers http://www.bitsavers.org/pdf/decitek/ On an optical reader, I would not recon the capstan running at power on as unusual - a pinch roller which engages for drive and a

[cctalk] Re: Papertape-Reader Decitek 442A9: need manual/schematics

2024-05-16 Thread Martin Bishop via cctalk
at Decitek still exists. I will write them. Micha Martin Bishop via cctalk wrote: > It looks as though Decitek remain in business > http://www.decitek.com/index.html > > Scan of a series 700 reader manual on bitsavers > http://www.bitsavers.org/pdf/decitek/ > > On an optica

[cctalk] Re: Papertape-Reader Decitek 442A9: need manual/schematics

2024-05-16 Thread Martin Bishop via cctalk
ly RS-485 is not in the legacy category Numeric gloup Martin -Original Message- From: Jon Elson via cctalk [mailto:cctalk@classiccmp.org] Sent: 16 May 2024 22:20 To: Martin Bishop via cctalk Cc: Jon Elson Subject: [cctalk] Re: Papertape-Reader Decitek 442A9: need manual/schematics On

[cctalk] TinyTapeOut and the Z80

2024-06-03 Thread Martin Bishop via cctalk
https://www.eenewseurope.com/en/tiny-tapeout-7-readies-open-source-z80-design/ May be of interest both in the context of the Z80 and other unobtanium silicon The lead time is long, ~6 months Martin

[cctalk] Fanuc A860-0056-T020 : 24 V supplies

2024-11-11 Thread Martin Bishop via cctalk
Bill A few years ago I took your advice on interfacing a Fanuc tape reader without reels, it has happily read tapes to its host since then. The interface card was the common A20B-007-0750/07B, with 24V, 5V & Gnd on CNT3, and IO signals on CNT1. Notably the 24V currents can be high, eg 1A2 when i

[cctalk] Re: European wire size (slightly off topic)

2024-12-07 Thread Martin Bishop via cctalk
From the US, the UK is (probably), in Europe ? Beyond simply using US wire / sizes, and ignoring the definition of wire/cable, the main things you can source in the UK are: Tri rated wire https://www.elandcables.com/cables/tri-rated-h05v2-k-h07v2-k-cable#ProductListing 0.5 mm sq and up UK MoD

[cctalk] Re: Information on Trend UTR 700 Paper Tape Reader and Facit 4060 Punch

2024-12-12 Thread Martin Bishop via cctalk
Tony Thank you for responding to this query earlier, as you did to my query in Summer '22. I have had a quick "go" at compressing the big pdfs, brute force Acrobat Pro looks not to cut it, to avoid pixelation the circuits require little compression and to reduce volume the text requires more c

[cctalk] Re: Information on Trend UTR 700 Paper Tape Reader and Facit 4060 Punch

2024-12-13 Thread Martin Bishop via cctalk
The Centre for Computing History at Cambridge, UK have have a UDR700 https://www.computinghistory.org.uk/det/16227/Ferranti-Paper-Tape-Reader/ and interface drawings for a Ferranti FM1600B; I believe they also have the machine : all extracted from HMS Dryad in the 90's IIRC. With notice they ca

[cctalk] Re: Try Algol 68 on Windows

2025-01-13 Thread Martin Bishop via cctalk
Ben I shall simply comment that for a useless language it did a lot of good, signal processing, work for me all but 50 years ago As an example, you could define matrix operators with parametric dimensions and write complex matrix (Riccati) equations "naturally". The code was easy to verify, i

[cctalk] Re: Try Algol 68 on Windows

2025-01-13 Thread Martin Bishop via cctalk
Mike Thank you for assembling this information - a very useful resouce; I must find time to play in the sand box. In the list of influences you could meaningfully add VHDL, broadly from the same stable as Ada, and riddled with Algol (68) influences. Even if it suffers from end if etc - why no

[cctalk] Re: Try Algol 68 on Windows

2025-01-14 Thread Martin Bishop via cctalk
Interestingly, I moved on from Fortran IV to Algol68; perhaps Fortran II would have been a more compelling offering Martin -Original Message- From: ben via cctalk [mailto:cctalk@classiccmp.org] Sent: 13 January 2025 23:27 To: cctalk@classiccmp.org Cc: ben Subject: [cctalk] Re: Try Algo

[cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector Identification

2025-01-17 Thread Martin Bishop via cctalk
Links or OEM / part numbers would be very helpful - Galco have a big warehouse VMTiA Martin -Original Message- From: Ed via cctalk [mailto:cctalk@classiccmp.org] Sent: 17 January 2025 12:17 To: cctalk@classiccmp.org Cc: Ed Subject: [cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector

[cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector Identification

2025-01-17 Thread Martin Bishop via cctalk
Many Thanks; Just ordered something similar - these guys don't ship to the UK Martin -Original Message- From: Chuck Guzis via cctalk [mailto:cctalk@classiccmp.org] Sent: 17 January 2025 17:05 To: Martin Bishop via cctalk Cc: Chuck Guzis Subject: [cctalk] Re: Fanuc Tape Reader

[cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector Identification

2025-01-17 Thread Martin Bishop via cctalk
As you will have gathered my interest is in their paper tape readers, and to date I have found nothing better than the maintenance / operators manuals. PEC schematics, and listings/source for their final reel to reel would be paydirt Best Regards Martin -Original Message- From: Jon E

[cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector Identification

2025-01-17 Thread Martin Bishop via cctalk
Identification On 1/17/25 7:06 AM, Martin Bishop via cctalk wrote: > Links or OEM / part numbers would be very helpful - Galco have a big > warehouse > > VMTiA > > Martin It was several years ago, no longer have part numbers. Searched for Fanuc cable connectors. Ed.

[cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector Identification

2025-01-17 Thread Martin Bishop via cctalk
ds Martin -Original Message- From: Jon Elson via cctalk [mailto:cctalk@classiccmp.org] Sent: 17 January 2025 15:07 To: Martin Bishop via cctalk Cc: Jon Elson Subject: [cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector Identification On 1/16/25 16:07, Martin Bishop via cctalk wrote:

[cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector Identification

2025-01-17 Thread Martin Bishop via cctalk
lson via cctalk wrote: > On 1/16/25 16:07, Martin Bishop via cctalk wrote: >> 1980's Fanuc tape reader PECs are fitted with two families of >> connector I am unfamiliar with : one is used for power and the other >> for signal connections -further detail and pictures in t

[cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector Identification

2025-01-17 Thread Martin Bishop via cctalk
herals of the period Martin -Original Message- From: Doc Shipley via cctalk [mailto:cctalk@classiccmp.org] Sent: 17 January 2025 08:23 To: Martin Bishop via cctalk Cc: Doc Shipley Subject: [cctalk] Re: Fanuc Tape Reader PECs 1980's - Connector Identification I don't have any

[cctalk] Fanuc Tape Reader PECs 1980's - Connector Identification

2025-01-16 Thread Martin Bishop via cctalk
1980's Fanuc tape reader PECs are fitted with two families of connector I am unfamiliar with : one is used for power and the other for signal connections -further detail and pictures in the following VCF post No joy on Burndy website or at BitSavers - wisdom gratefully received https://forum.vc

[cctalk] Re: Elliott Algol

2025-02-15 Thread Martin Bishop via cctalk
Sid If it serves any purpose I could read the 5 track tape, I have a 5/6/8 hole sprocket drive reader - in Dorset, UK - and an 8 hole friction drive reader (perhaps kinder on tapes, but n/a in this instance). Martin -Original Message- From: Sid Jones via cctalk [mailto:cctalk@classiccm

[cctalk] Re: Classic computers with more than one stack pointer, but not FORTH machines.

2025-02-17 Thread Martin Bishop via cctalk
R6 (SP) is a magic register in the PDP-11 architecture. Its use is baked into JSR, RTS, MARK, BPT, RTI, etc, traps and aborts. You are quite correct that all registers provide address inc/dec However, some instructions / actions (eg aborts) make implicit use of SP Martin -Original Message

[cctalk] Re: Elliott Algol

2025-02-17 Thread Martin Bishop via cctalk
Once upon a time - 35 - 45 years ago - I had the pleasure (sic) of working with: https://archive.org/details/TNM_Versatec_printers_and_plotters_-_Versatec_a_X_20180227_0009 for temperamental plots of telemetry traces https://www.ebay.co.uk/itm/404623414575 manual for sale EPC Graphic Recorder 16

[cctalk] Re: IDT 49C402BG84 Pinout?

2025-03-12 Thread Martin Bishop via cctalk
For a Meta Assembler you may find https://hamblen.ece.gatech.edu/book/wintim/index.html useful, its useable and the source is available (as VS6 C++). If you have AmdAsm sources, esp suitable for building with gcc, I would be interested in making their acquaintance. You may find FPGAs and their

[cctalk] Re: IDT 49C402BG84 Pinout?

2025-03-13 Thread Martin Bishop via cctalk
If you are doing "industrial" IO the first thing you need is galvanic isolation, the second is usually sone of Ethernet, Can bus and 24V bit IO. The 24V IO can be done with optos and (LED) constant current sources. There are 8 pin Can bus drivers with dual supplies and isolation. Plus, any (l

[cctalk] Re: IDT 49C402BG84 Pinout?

2025-03-13 Thread Martin Bishop via cctalk
One FPGA will easily do a VLIW sequencer + scalar mills (one or more, memory / MAC assemblies) or a simple processor Something like https://www.aliexpress.com/item/1005005779045608.html provides a wholly adequate platform for a microcoded processor, with lots of 3v3 IO for external logic analys

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