- test-drb@ccmp.vtda.org - classiccmp.org

by marcogb＠xs4all.nl

Two Hewlett-Packard Integrity rx2620 systems, with dual 9015 "Montecito" (IA-64 with hyperthreading, VT-x, etc.) dual-core processors, 24 Gbytes RAM, iLO/MP board and plenty of options (Ultra320 SCSI RAID, 10GbE, GbE-and-FC combo cards and much more). I should note, the processors have been installed last year, brand-new out of the box! (In fact, I can even deliver the original CPU boxes, with processor tools, included documents and so forth.) This type of CPU supports HPVM (also known as Integrity VM), which is a fairly recent feature. In any event, please contact me for more information, offers or potential trades (I'm in particular looking for SGI parts). I can also show pictures and arrange a 'test drive' or 'tour' via SSH or Telnet. The systems are located in the Netherlands and I'm willing to ship (internationally). - MG

13 years, 7 months

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FS: 2× DEC PWS 500au

by marcogb＠xs4all.nl

Two Digital (Equipment Corp.) Personal WorkStation 500au systems, each with a stock 500 MHz EV56 CPU (socketed), 1? Gbytes memory, on-board DE500 Fast Ethernet NIC, on-board SCSI, on-board (MMOV- compatible) Ensoniq ES1888 audio, additional DE450 NIC, PowerStorm 3D30, an additional QLogic SCSI controller (same type as on-board). One of the two may have a weak battery, but it's fortunately a regular button cell type battery. I have various options to offer. In any event, please contact me for more information, offers or potential trades (I'm in particular looking for SGI parts). I can also show pictures and arrange a 'test drive' or 'tour' via SSH or Telnet. The systems are located in the Netherlands and I'm willing to ship (internationally). - MG

13 years, 7 months

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cctech Digest, Vol 113, Issue 9

by cctech＠beyondthepale.ie

Dave wrote: >On 08/01/2013 17:58, Richard wrote: > > In article <CAH1BU=_qEb_i=4uW1DvfdrUucpZz76WBVk5b9ThN2dg22sz3rA at mail.gmail.com>, > > Michael Thompson <michael.99.thompson at gmail.com> writes: > > > >> The RICM has lots of them: > >> http://www.ricomputermuseum.org/Home/equipment/ibm-series1 > > The University of Delaware Electrical Engineering department had > > several of these in their machine room circa 1982. I can't remember > > what they were used for; I think it was for research being done by a > > particular professor because I don't recall ever hearing of them being > > used for student work. Instead we were using the PDP-11/70, and I > > think later a VAX, for C and FORTRAN related homework. > In the UK we used them to provide X.25 connections to VM/CMS but I have > forgotten everything I ever knew about them... > I think I also remember them being used to enable ASCII terminals to emulate 3270 terminals for an IBM mainframe, before IBM 7171 protocol converters came into use, unless that was a completely different machine also called series1... Regards, Peter Coghlan.

13 years, 7 months

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TRS-80 Model II Fixed Disk Controller Support

by cctech＠beyondthepale.ie

> > The only thing I seem to find odd is the BUSY light on the drive is stuck on > when the controller is attached which seems suspicious. > Anyone here got a slue how I should be tacking this problem? > When this happens with a floppy drive, it is often due to the data cable having being put on upside down, causing all the active signals to be grounded and resulting in the drive being selected all the time. Perhaps a similar cabling issue could cause this with an ST-225? Regards, Peter Coghlan.

13 years, 7 months

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NASA computers circa 1969

by tshoppa＠wmata.com

Polemon writes: > Iconic of the > PC-System (that is, an IBM PC kind of computer) would be a CD, > when looking at removable storage media. It's funny how for many, the "IBM PC 5150" is not an "IBM PC kind of computer". I'm sure somebody here did it. 5150 with a CM153 card for Philips CM100 player? Tim.

13 years, 7 months

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Motorola 6800 evaluation kit

by stacymcarr＠gmail.com

I am looking for a Motorola 6800 evaluation kit with books. I sold one that I built in 1976 which I sold in 1992. I would like to find one that is for sale, hopefully the same one, if not one in good shape.

13 years, 7 months

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RIP Mark Crispin

by tshoppa＠wmata.com

I traded E-mails with Mark for three different decades and got to visit him several times in the 90's whenever I was passing through Seattle. Hop on the ferry, have deep political discussions with him (although I never exactly agreed with him he was always willing to discuss!) at the diner, and play with KS-10's, TU-77's, and Massbus disks. Rest in peace, Mark. Tim.

13 years, 7 months

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looking for supercomputers, Ardent, Stardent, Titan or Portable Graphics Mainframe

by rdawson16＠hotmail.com

Any of these lying around? I ask every year or so... I had both at work, and want one again. Thanks, Randy

13 years, 7 months

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cctech Digest, Vol 113, Issue 9

by michael.99.thompson＠gmail.com

> From: Al Kossow <aek at bitsavers.org> > To: classiccmp at classiccmp.org > Cc: > Date: Fri, 04 Jan 2013 14:43:34 -0800 > Subject: IBM Series/1 documentation upload > > http://bitsavers.org/pdf/ibm/series1 > > more that you ever wanted to know. > > there's a bit more yet being pushed out to the mirrors. Thanks Al. The RICM has lots of them: http://www.ricomputermuseum.org/Home/equipment/ibm-series1 -- Michael Thompson

13 years, 7 months

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RIP Mark Crispin

by dgriffi＠cs.csubak.edu

Just saw this at alt.sys.pdp10. Some of you are aware that Mark Crispin was very ill and in hospice. ===begin quote=== Mon, 07 Jan 2013 11:18:55 alt.sys.pdp10 Thread 3 of 3 Lines 5 RIP MRC 2 Responses fishtoprecords <pat22043 at gmail.com> Newsgroups: alt.sys.pdp10 Mark Crispin - MRC - Inventor of IMAP and a friend for decades, has died at 56. // Mark Reed Crispin, passed away on Friday, December 28, 2012 at Martha and Mary Healthcare Services in Poulsbo Washington. He was born on July 19, 1956 in Camden New Jersey and was 56 years of age. Arrangements are pending through Cook Family Funeral Home. ===end quote=== -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

13 years, 7 months

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Test Diablo Model 31 drive and disk pack on a PC (Operation Alto

by duane.platfoot＠us.schindler.com

Hello I'm trying to fix a Diablo drive Are you familiar with the Diablo Disk drives _____________________________________________________________ Duane Platfoot | Field Engineer Phone 937.214.4355 | Mobile 937.214.4355 | Fax 419-861-5901 duane.platfoot at us.schindler.com Schindler Elevator Corp | RNE 1530 Timberwolf Dr |Holland, OH 43528, USA www.us.schindler.com (Embedded image moved to file: pic06287.gif)Please consider your environment. Schindler supports sustainable urban development with safe, reliable and ecologically sound mobility solutions. ****************************************************** Notice: The information contained in this message is intended only for use of the individual(s) named above and may contain confidential, proprietary or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you are not the intended recipient of this message you are hereby notified that you must not use, disseminate , copy it in any form or take any action in reliance of it. If you have received this message in error please delete it and any copies of it and notify the sender immediately. *******************************************************

13 years, 7 months

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Ohio Scientific floppy disk images

by fjkraan＠xs4all.nl

bear (r.stricklin) wrote wrote: > > to ImageDisk or Tim Mann's catweasel tools. Recently I did add a raw dump option to cw2dmk, but that does not quite fall in the "all the dirty work" category ;-). Fred Jan

13 years, 7 months

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Don Maslin archive...

by geneb＠deltasoft.com

I've got the first files online here: http://www.retroarchive.org/maslin So far it's only the Kaypro disk images. I'd like it if one of you that knew Don could write up a small blurb I could use as an introduction to the archive. I'll be getting the rest of it online as I have time. Thanks folks. g. -- Proud owner of F-15C 80-0007 http://www.f15sim.com - The only one of its kind. http://www.diy-cockpits.org/coll - Go Collimated or Go Home. Some people collect things for a hobby. Geeks collect hobbies. ScarletDME - The red hot Data Management Environment A Multi-Value database for the masses, not the classes. http://www.scarletdme.org - Get it _today_!

13 years, 7 months

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Ohio Scientific floppy disk images

by bear＠typewritten.org

Howdy folks. I have a handful of 5.25" floppy disks for an Ohio Scientific C1, which I would like to image. Anyone have any info on this disk format, or know of a tool that can read them? They don't appear to be in a WD177x-style format... at least not one intelligible to ImageDisk or Tim Mann's catweasel tools. There is at least one C1 emulator out there with support for disk image files, so I have some hope somebody's already done the dirty work for me. If nothing already exists, low-level info on the format would be awesome as then I'd have something to work with, trying to extend Karsten Scheibler's catweasel tools. A few cursory trudges through t3h Googles have borne little fruit so far. ok bear. -- until further notice

13 years, 7 months

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db-9 hoods

by rampaginggreenhulk＠yahoo.com

is there such thing as a db-9 hood with a bore as large as a db-25 or more specifically a db-23? Or what about a grommet to take up the slack in the larger hood?

13 years, 7 months

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Looking for info on Apple II card- Labnet 488

by dfnr2＠yahoo.com

Hi all, I recently acquired Labnet 488 card by Innovations in Computing, circa 1978.? This appears to be an IEEE-488 interface based on the Motorola 68488 chip.? Does anybody have any info on this card, or even better, has anybody seen one of these in use?? It would be cool to locate manuals and/or software, and actually put this sucker to use. Dave

13 years, 7 months

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1
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IBM Issued PC DOS Version 5.0 for shipping

by technobug＠comcast.net

> My recycler got in a complete, boxed (mostly) version 5.0 of DOS and was about to "recycle" it. Available for shipping from 85704. > 'Tis taken ->CRC

13 years, 7 months

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FS: PDP 11/83 (UK)

by silvercreekvalley＠yahoo.com

Thanks for the replies - yes its a BA123 - just like the picture :) The system is in the UK. It is a nice machine as it usefully sits next to (or under a large) desk so doesnt take too much space. I'll get some pictures and specs online shortly.

13 years, 7 months

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World's largest Mindset Computer Corp Collection available

by curt＠atarimuseum.com

Hi all, Been having some health issues as of late and bills are pouring in faster than money is coming in so I have to make a tough decision and sell my Mindset Computer Corporation Collection. I am only selling as a whole as I don't want this collection broken up. I'm gauging interest, please email at: curt(at)atarimuseum(dot)com Many have seen quite a lot of my collection as it was on display at a recent VCF East show and one an award. I have over a 1/2 dozen CPU units, expansion modules, plug in peripheral modules, keyboards, joysticks, mice, tons of software, applications, and games, many are in original boxes and are original disks, I have a huge developers manual, marketing materials, units in boxes, a keyboard in a box, peripheral accessories in boxes (many in never opened/sealed boxes), I have one of the only Mindset software carrying case bags, and much more. Need to put together a more detailed inventory, but it is extensive. Here are some photo's of a good bit of the collection (monitors are not included): http://vintagecomputer.net/vcf7/Exhibits/Mindset_exhib_Vendel2.jpg http://vintagecomputer.net/vcf7/Exhibits/Mindset_exhib_Vendel1.jpg http://vintagecomputer.net/vcf7/Exhibits/Mindset_exhib_Vendel4.jpg http://vintagecomputer.net/vcf7/Exhibits/Mindset_exhib_Vendel3.jpg Will also included domain: www.mindsetcomputer.com with sale... Regards, Curt

13 years, 7 months

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IBM Issued PC DOS Version 5.0 for shipping

by technobug＠comcast.net

My recycler got in a complete, boxed (mostly) version 5.0 of DOS and was about to "recycle" it. Available for shipping from 85704. ->CRC

13 years, 7 months

2
1
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CFFA3000 and Apple III?

by wheagy＠gmail.com

Great, thanks. I'll give the cleaning process a try before a speed adjustment. Thanks...Win ---- Almost all the A3 drives that have come my way were malfunctioning. Best bet is to disassemble them and carefully clean and lube. First, use some canned air to blow out all the dust bunnies. The original grease used on the head assembly rails and the spiral-cut plastic stepper wheel solidifies over the years. I usually use a tiny bit of WD-40 on a swab to remove the old lubricant, then a bit of Tri-Flow to replace it. A speed adjustment may very well be needed, but another problem area is the two trimpots on the top of the drive circuit board. They tend to grow oxide and become intermittant. Mark the position of the pots with a felt-tipped pen, then wiggle them with a screwdriver until the little gob of locking compound breaks. Squirt a small amount of non-residue control cleaner in the side and work them through their rotation a few times. Reset to the marked position. You can lock them in place again with a dab of nail polish, but don't do this until you know that things are working again! Reseat all the chips on the board and check closely for "black pin" syndrome. For some reason, the chips in the disk drives seem more prone to this (more exposure to humidity?) If you see this, pull all of them and take a contact cleaning tool to the legs. Finally, take a swab and carefully clean the head with isopropyl alcohol. I've successfully repaired four or five drives in this manner. Steve

13 years, 7 months

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KS10 (PDP-10) FPGA Status

by radioengr＠gmail.com

There has been significant progress over the Holidays. All the Basic Instruction Diagnostics now execute successfully. Many of the Advanced Instruction Diagnostics also execute successfully - the Advanced Diagnostics that fail, do so because they require support from the Diagnostic Monitor (SMMON) which is not 'linked in' at this time. I have a design roughed-in for a RH-11 Massbus Controller supporting 8 RP06 Disk Drives. All 8 RP06s disks use a single 8GB Secure Digital (SD) Disk Card for media. There is still a lot to do before the Disk IO will be ready to test. I've also implemented an DZ-11 8-port Terminal Multiplexer, and the KS10-Backplane-to-Unibus IO Bridges. If anyone knows where to find the KS10 DZ-11 Diagnostic DSDZA Source code, please contact me. I have verified that I can use the same 'bits-on-disk' format as SIMH. That will allow the KS10 FPGA to use any of the freely available disk images without modification. You also should be able to use the SIMH Tape IO facilities to create your own disk images. For complete information, please visit: http://www.techtravels.org/KS10FPGA/ Rob Doyle doyle (at) cox (dot) net

13 years, 7 months

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1
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CFFA3000 and Apple III?

by wheagy＠gmail.com

A quick update on my Apple III. I used the BNK, ADR and Exp/Got info from the Apple III RAM test to narrow down the bad RAM chip. I replaced it with one from an Apple II and it worked. The RAM test completes successfully, but it does do one odd thing shown in this pic... http://i.imgur.com/VP98h.jpg Row 7 gets dashes across it during the second pass and all subsequent passes. The test, however, continues normally. I ran it over 10 passes with no problems. Any ideas what the dashes mean? On the downside, my III still doesn't boot. It does pretty much what it did before. WIth an SOS disk in the drive, it spins for about 3 seconds, then nothing. The demo disk does the same thing. The III+ diagnostic disk that used to boot, doesn't boot anymore and fails with an IO error message. This makes me think again that there may be a floppy drive issue. Is the drive calibration method that was mentioned previously the one that is outlined in the Sun Remarketing Do It Yourself Guide for adjusting Apple III drive speed...that uses a 60 Hz light source? If so, I guess that's my next task to try to revive this machine. Thanks, Win

13 years, 7 months

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Hobbyist CP/M home brew computer PCBs available!

by LYNCHAJ＠yahoo.com

Hi If funds and/or PayPal is an issue, I am willing to barter items instead. We can make trades for certain computer parts, electronic components, tools, metals, coins, unused gift cards, shipping materials, scrap, etc. Please let's discuss! Many times I have just sent (gratis) PCBs to known N8VEM builders especially those working on tough problems or less popular areas that need attention. Times are tough for many these days. Please don't let a lack of cash or issues with PayPal limit your participation. Thanks and have a happy holidays! Andrew Lynch

13 years, 7 months

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0
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DEC LAVC SCA Specification

by robert.jarratt＠ntlworld.com

I have been trying to find if there is a published spec for the DEC LAVC SCA protocol. The reason I want to find it is that I want to see if I can work out why my MicroVAX II is failing the net boot, it times out after a while and falls out of the cluster. I suspect I have a hardware problem, but would like to use a packet sniffer to work out what is going on. Is such a document available? Regards Rob

13 years, 7 months

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FW: 68360 - status

by LYNCHAJ＠YAHOO.COM

Hi, If there are any builders who would like to participate in the MC68040 SBC project please let me know. We are working on an intermediate project at the moment based on the MC68360 which is the integrating glue for the MC68040 SBC. The MC68360 is the all-important piece that has to work well before even considering the MC68040 CPU since it is a standalone processor by itself. There are some spare MC68360 P1 PCBs remaining (see the excerpted status update below) and the basic board seems to be working. It is booting from the ROM and partially initializing. More work is underway to further initialize the MC68360 chip subsystems like timers, UARTs, etc. The plan is to integrate a Propeller based IO subsystem (VGA display, PS/2 keyboard, microSD mass storage), DRAM, and Flash memories to the final SBC. This is an ambitious project and will take quite a bit of time so if there are any experienced MC68040/MC68360 builders that would like to contribute your help would be greatly appreciated. Additional information is posted below. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=68040%20SBC http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=MC68360%20P1 Similar to other N8VEM home brew computing project boards these are free/open source designs including hardware, software, and other related information. Please contact me at LYNCHAJ at YAHOO.COM if interested. Thanks and have a nice day! Andrew Lynch -----Original Message----- [snip] To: Andrew Lynch Subject: Re: 68360 - status Hi Andrew! I have made quite a bit of progress - if you look at the steps on 9-13 through 9-16 of the User Manual I am at step 11 so I only have a few steps left. [snip] BTW - I have I think 4 extra boards (the other place sent me boards anyways) so if people want to join in the fun, I can forward you the boards. We are also going to have to chat on how we proceed from here - looking at the stuff Alan sent and other errata - the 68040 is not going to be a "glue less" implementation and will require some GALS or a CPLD. [snip]

13 years, 7 months

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1
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SCSI to IDE/SD bridge board project

by LYNCHAJ＠YAHOO.COM

Hi Recently there has been a bit of renewed interest and an uptick in activity in the N8VEM SCSI to IDE/SD bridge board project. http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=SCSI%20to%20ID E%2FSD%20prototypes> &param=SCSI%20to%20IDE%2FSD%20prototypes There are still some prototype boards available in case anyone would like to help bring this project to completion. The prototype boards do work in that they are booting the debug monitor (Zapple) and the IO subsystems are checking out. What we need is the programming to make the Z53C80 SCSI controller work in target mode with the SCSI host mode controller. This board project will be free/open source with software, hardware, and other design information posted to the public. Please contact me if you are interested in helping out at LYNCHAJ at YAHOO.COM I realize there are many ways to accomplish this task and the Z80 based embedded controller board is but one. There may be other valid approaches however none are free/open source projects AFAIK. Please post a link if I am mistaken. Any lessons learned and/or design information from this project could be readily applied to a follow-on project potentially using different technologies. However I think it is important to get this first step working before moving on to another design. I am willing to support a follow-on design once we get this one working properly. I believe with a quick Z80 (8 MHz or greater) there should be sufficient through put for most SCSI-1 applications. It will never be a "speed demon" but the older vintage/classic/hobbyist SCSI-1 machines probably don't need one either. Many of the aging SCSI-1 machines are going to go "offline" forever if the supply of SCSI-1 drives dries up. Thanks in advance for your consideration. Have a nice day! Andrew Lynch

13 years, 7 months

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3.25 alingment?

by pinball＠telus.net

Looking to test/service/align a number (10 or so) of double-sided double-density 3.25 floppy drives and hoping there is someone here in Canada who has the alignment discs that I could borrow/buy. These are for setting up some of my older computerized microprocessor test gear (Fluke mostly)... Suggestions on aligning are also greatly appreciated! Thanks! John :-#)#

13 years, 7 months

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older Yamaha keyboards

by rampaginggreenhulk＠yahoo.com

are they component level repairable, that is, are the individual chips readily available? Something tells me not likely.

13 years, 7 months

9
30
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Bootdisk for Vector graphics MZ wanted...

by jdr_use＠bluewin.ch

Since I don't have hardsectored floppies, I would hope that someone here could help out ? I am located in Switzerland,costs will be covered . Jos Dreesen

13 years, 7 months

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Bootdisk for Vector graphics MZ wanted...

by jos.dreesen＠bluewin.ch

Since I don't have hardsectored floppies, I would hope that someone here could help out ? I am located in Switzerland,costs will be covered . Jos Dreesen

13 years, 7 months

1
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N8VEM and S100computers.com S-100 board status

by LYNCHAJ＠YAHOO.COM

Hi A quick status of N8VEM and S100computers.com S-100 board PCB New S-100 LAVA PCBs are on their way and should be here in a week or less. http://s100computers.com/My%20System%20Pages/Lava-10%20Board/LAVA-10%20Board .htm Reordered respin S-100 Console IO PCBs should be here in mid to late Jan 2013 http://s100computers.com/My%20System%20Pages/Console%20IO%20Board/Console%20 IO%20Board.htm Reordered S-100 regular prototyping boards (just PTH area, no additional circuitry) will be ordered mid-Jan 2013 with estimated delivery early to mid Feb 2013 http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=S-100%20regular %20prototyping%20board Finally, a couple of new S-100 PCBs are in work and my plan is to order them in Feb 2013 starting with the S-100 68K CPU board. Please note the V3 version of the S-100 68K has the chips in horizontal layout and has a completely different appearance than the prototype boards on the webpage. http://s100computers.com/My%20System%20Pages/68000%20Board/68K%20CPU%20Board .htm Immediately followed by the S-100 80286 CPU board (Don't be scared of the prototype board images since the final board has all the fixes and is clean) http://s100computers.com/My%20System%20Pages/80286%20Board/80286%20CPU%20Boa rd.htm If you are interested in any of the above boards please contact me at LYNCHAJ at YAHOO.COM Please note this is a hobbyist project and purely for entertainment/educational purposes. By getting these PCBs you are participating in their development at the N8VEM home brew computing project. Thanks and have a nice day! Andrew Lynch PS, there are a couple of S-100 board projects that are languishing "on the back burner" and would like any ideas, comments, thoughts, and/or questions as to what to do with them. The S-100 VDP V2 (V9938 and AY-3-8910 color graphics and sound generator) and the S-100 uPD7220 GDC (accelerated graphics VGA monitor compatible - not register compatible - 640x480 or 800x600 at 16 colors - 4 bit planes).

13 years, 7 months

1
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N8VEM multiple ECB board special

by LYNCHAJ＠YAHOO.COM

Hi Things have slowed down a bit on the N8VEM home brew computing project lately. I'd like to clear some boards off the shelf to free up some hobby funds and make room for new projects. To help move things along a bit I am having the first ever multiple ECB board "free shipping special" So far it has been pretty popular. Please see the note on the mini-68000 ECB system though regarding the minimum system. More information here: http://groups.google.com/group/n8vem/browse_thread/thread/f240fa29ece4cfae Thanks and have a nice day! Andrew Lynch

13 years, 7 months

1
0
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My Commodore VIC-20 on YouTube

by terry＠webweavers.co.nz

My Commodore VIC-20 (and the VIC-20 in general) is discussed in this YouTube video (see link). This will be the last video for a while as I return to work on Monday after the Xmas break (bummer). http://youtu.be/hyHNdAhWVmM Terry (Tez)

13 years, 7 months

1
0
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Identifying power connector for GRiD laptop

by derschjo＠gmail.com

Hi all -- Picked up an interesting old "laptop" -- a GRiDCase 1537E. This is a Tempest-hardened devicewith (I believe) a 386 processor. Also looks to have an electroluminescent display. Inside there isn't a single exposed wire or circuit board, so any debugging I might need to dowill be a fun prospect. At any rate, I didn't get the AC adapter with this thing and it's got an odd connector that I'm not familiar with. See here: http://yahozna.dyndns.org/scratch/gridcase/1537/power.png The connector's abit over 1cm in diameter with three oddly-spaced pins. I'dlike to build areplacement assuming I can work out the pinouts (and find/fabricate a mating connector). Anyone know anything about this machine?Any ideas where to find such a connector? Thanks, Josh

13 years, 7 months

2
2
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Early CD-ROMs was: NASA computers circa 1969

by barythrin＠gmail.com

What country/nationality are those names? I'm jealous. They sound straight out of a Tolkien novel. -----Original Message----- From: "Bill Sudbrink" <wh.sudbrink at verizon.net> Sender: cctalk-bounces at classiccmp.orgDate: Fri, 04 Jan 2013 16:49:56 To: 'General Discussion: On-Topic and Off-Topic Posts'<cctalk at classiccmp.org> Reply-To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Subject: RE: Early CD-ROMs was: NASA computers circa 1969 Dave McGuire wrote: > You didn't work for a flaming asshole of epic proportions > who went by the name of "Murf", did you? No, not that I remember. Are you talking about someone at Meridian? I didn't work there, I worked for AIRS (Automated Information Retrieval Systems) back then. The guy I worked for was named Eldon. I collaborated with (over the phone) a a guy named Wink at Meridian. What was his last name? Like the chipmunk guy I think... Seville? We were one of Meridian's first customers on the East Coast. Wink wrote their custom drivers. Before mscdex, before Yellow Book, back in the dark days. Bill S.

13 years, 7 months

3
2
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8 bit virii

by tshoppa＠wmata.com

geneb writes: > As far as I know, there was never a known instance of a virus on an 8 bit machine. "Elk Cloner" for the Apple II, according to Rich Skrenta went wild in 1982. Was written up very nicely in a Scientific American article in March 1985 (good enough that I wrote a "me too" virus based on the article.) Very similar to what a IBM-PC guy would call "a boot sector virus" (although really there's a little more than that in either the Apple II or PC-clone cases.) It would be interesting if any of the Apple II disk image archives, have Elk Cloner or lookalikes in them. I once thought about automating such a search as an addition over the effort to index the Apple II disk images floating around on the net. Haven't thought of that in, oh, nearly 20 years now!!! Tim.

13 years, 7 months

9
11
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3.5 alignment? (~~opps, not 3.25!)

by pinball＠telus.net

Looking to test/service/align a number (10 or so) of double-sided double-density 3.5 floppy drives and hoping there is someone here in Canada who has the alignment discs that I could borrow/buy. These are for setting up some of my older computerized microprocessor test gear (Fluke mostly)... Suggestions on aligning are also greatly appreciated! Thanks! John :-#)# -- John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames) www.flippers.com "Old pinballers never die, they just flip out"

13 years, 7 months

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NASA computers circa 1969

by dgriffi＠cs.csubak.edu

I just stumbled across a sort of show-and-tell of computers used by NASA in the 1960s. See http://www.youtube.com/watch?v=nrwpXEiTDVk -- David Griffith dgriffi at cs.csubak.edu A: Because it fouls the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail?

13 years, 7 months

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Early CD-ROMs was: NASA computers circa 1969

by mcguire＠neurotica.com

On 01/04/2013 04:49 PM, Bill Sudbrink wrote: >> You didn't work for a flaming asshole of epic proportions >> who went by the name of "Murf", did you? > > No, not that I remember. Are you talking about someone at > Meridian? I didn't work there, I worked for AIRS (Automated > Information Retrieval Systems) back then. The guy I worked > for was named Eldon. I collaborated with (over the phone) a > a guy named Wink at Meridian. What was his last name? Like > the chipmunk guy I think... Seville? We were one of Meridian's > first customers on the East Coast. Wink wrote their custom > drivers. Before mscdex, before Yellow Book, back in the dark > days. Ok, different gang. Fortunately for you. ;) -Dave -- Dave McGuire, AK4HZ New Kensington, PA

13 years, 7 months

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Atlantic research 4500 manuals

by hp-fix＠xs4all.nl

I'm looking for the manuals or copies of my Atlantic Research 4500 protocol analyzer. If somebody has a copy for me I would be very happy. -Rik PS. I got a spare unit if anyone wants it, it is a but busted and the tape drive is missing but it seems to work.

13 years, 7 months

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Early CD-ROMs was: NASA computers circa 1969

by wh.sudbrink＠verizon.net

Bill Sudbrink wrote: > Shoppa, Tim wrote: > > I'm sure somebody here did it. 5150 with a CM153 card for > > Philips CM100 player? > > Yes. That was the test platform for an early CD-ROM company > I worked for. We also had a Meridian Data CD-Publisher. > It wrote 9-track tapes that we sent to PDO Holland. They > would send us back some count of CDs along with the glass > master. That was what? 1983 or maybe 1984. I had one of > those glass masters in my office for a while but I've lost > it somewhere along the way. > As I think about it, I'm pretty sure I have a CM110 (the SCSI interface version) in a box around here somewhere. Bill S.

13 years, 7 months

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An interesting article on text-book vrs real-world programming

by terry＠webweavers.co.nz

Seen on one of my Google groups http://www.theregister.co.uk/2012/12/21/financial_software_disasters/ Terry (Tez)

13 years, 7 months

21
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rtVAX 300.

by holm＠freibergnet.de

Next time I'll get this: http://www.tiffe.de/images/11122012114.jpg Is anything known about this board here (Manufacturer, Adresses, Switch settings and so on)? Looks to me like an VAX upgrade to an PC with onboard SCSI, Ethernet and Serial Ports... I have 2 2nd rtVAX board here from a friend, this is a VME CPU with SCSI on board. I should look if I could get it to boot.. Any hints welcome, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 www.tsht.de, info at tsht.de, Fax +49 3731 74200, Mobil: 0172 8790 741

13 years, 7 months

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PDP-8 Paper Tape Reader Emulator

by michael.99.thompson＠gmail.com

With lots of help from members of this forum and other friends I made a high-speed paper tape reader emulator from a wire-wrapped interface board and an Emcraft SmartFusion FPGA evaluation board. The interface board plugs onto the Posibus interface slots in a PDP-8/L. I loaded Focal from a BIN paper tape image into a PDP-8/L in about 2 seconds. That equates to about 3000 characters per second. I put some details about the project here: https://sites.google.com/a/ricomputermuseum.org/home/Home/equipment/pdp-8-l… I will make an expanded version of the interface board and change to the Emcraft SOM FPGA board. That will give me enough I/O pins to emulate just about any peripheral that you can connect to the Posibus. It would be possible to make an interface board for the Negibus so that the peripheral emulator could be used on earlier PDP-8 systems. -- Michael Thompson

13 years, 7 months

6
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1959 Electronics Experimenters Handbook

by sales＠elecplus.com

For those of you who like the OLD electronics, here is a free ebook: http://www.tubebooks.org/Books/Findlay_experimenters.pdf Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2805 / Virus Database: 2637/6005 - Release Date: 01/02/13

13 years, 7 months

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EZ-SCSI 4.1

by sales＠elecplus.com

For those of you trying to deal with old Adaptec cards, like the AHA-15xx series, EZ-SCSI is needed, since they have no on-board controls, others than a few jumpers. The software came with some drives, but is hard to locate now. You can download the entire program here: ftp://82.199.101.173/install/System/Driverzzz/CD/SCSI/Adaptec%20EZ-SCSI%204. 01a%20-%201 Documentation is here: http://www.adaptec.com/en-us/support/_eol/scsi_sw/ez-scsi_4.01/install_sw/ez scsi_401_readme.htm?nc=/en-us/support/_eol/scsi_sw/ez-scsi_4.01/install_sw/e zscsi_401_readme.htm According to Adaptec, this will not work with anything higher than Win95 or NT, but you can use it in DOS or 3.1 Enjoy! Cindy Croxton _____ No virus found in this message. Checked by AVG - www.avg.com Version: 2013.0.2805 / Virus Database: 2637/6005 - Release Date: 01/02/13

13 years, 7 months

1
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CFFA3000 and Apple III?

by wheagy＠gmail.com

Good idea. Thanks for the plan. I'll give that a try. ---- And why would he do it with such a great memory board he has? It is just a matter of finding one (socketed) memory chip! :oD You can do a simple troubleshooting to discover which chip is defective without having 4164s there: Number chips from 1 to 16: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Now swap the first and last (1 and 16) and run the memory test No problems? swap 2 and 15, and run the memory test No problems, swap 3 and 14 and so on When you find that the last swap changed the position of memory error, you know that one of these two chips has problems :o) Since you said you have a //e, you can find 4164 as the main board memories of the //e.

13 years, 7 months

2
1
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IBM Displaywriter software?

by aek＠bitsavers.org

Is there an image archive of software for the Displaywriter somewhere? Someone donated one to the Computer History Museum recently, and I went through our archives and have only come up with a bunch of versions of the CE disk and a single TEXT PACK 1 diskette. I did image what we have, and put it up under http://bitsavers.org/bits/IBM/Displaywriter One thing I discovered was you HAVE to degauss the floppy before cloning the CE diskette. It expects tracks 37, 41 and 43 to be blank or it hangs.

13 years, 7 months

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FS: Compact Flash Adapter 3000 For Apple II

by slandon110＠gmail.com

Im forced to sell my spare CFFA 3000 for Apple II, this allows you to use USB and Compact Flash cards on your Apple II, boot disk images right off a USB Stick 175 shipped in the USA, These are sold out right now Heres a link to what they are http://dreher.net/?s=projects/CFforAppleII&c=projects/CFforAppleII/main.php

13 years, 7 months

1
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CFFA300 and Apple III?

by wheagy＠gmail.com

Mike, Good info, thanks. I actually have a copy of the ON THREE manual...I forget where I found it or why I have it, because I wasn't aware that I had that board until a couple of days ago. Thanks for the offer of the loaner board. I may take you up on that, but let me try using the ON THREE manual and making sure the board is installed correctly and and everything is seated properly. And, if I can pinpoint the bad chips, I might try ordering some replacements to see if it can be fixed. If I eventually do swap in one of your loaner boards, I'm wondering if I can roll the other changes back? It looks like there were a number of mods made to the motherboard to accomodate the 512K board....including new ROMs. I certainly don't have the original ROMs to put back. At any rate, my holiday vacation time and the disproportionate amount of time I've been able to spend on this hobby, is about to end, so it may take me a bit of time to get to all of it. But thanks very much for all the info, I feel like I have a much clearer picture of how the III works and what I need to do. Win Hi Win, Yes, bad RAM could definitely cause that. The board you have was manufactured by ON THREE, which got its start as an Apple III users group. Once Apple turned its back on the III, ON THREE stepped up and began producing its own hardware and software for the computer. Apple had advertised the III as being expandable up to 512K, but never released a board larger than 256K. As the ON THREE engineers discovered, it required some new ROMs and additional addressing lines, but they got it working. That 512K board is fairly rare and sought after by III collectors, as SOS and big programs like Pascal can really benefit from the extra room. I'm not sure how easy it is to locate replacement chips for that board these days. Last time I checked (a few years ago), they were still available if you knew where to look. I have a few extra RAM boards for the III (256K and 128K, though - not 512K). I could loan you one for troubleshooting purposes, if you're interested. I wrote a quick blog entry a while back about ON THREE's card: http://www.6502lane.net/2011/01/17/a-look-at-on-threes-512k-memory-board-fo… Also, I have a PDF version of the user manual that came with it. The links in that blog entry are dead, but I can upload it, if you want. - Mike

13 years, 7 months

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An interesting article on text-book vrs real-world programming

by mcguire＠neurotica.com

On 12/31/2012 11:24 AM, Bill Sudbrink wrote: >>> Ironically, the garbage collected languages lead people to write even >>> sloppier code than they write in C++. >> >> ...and that's saying something! >> >>> They think that garbage >>> collection is a silver bullet that frees them from having to consider >>> the resource consequences of their implementation. >> >> Yes. "I'm a MODERN programmer! We don't have to worry about stuff >> like managing our own memory anymore!" >> >> Morons. > > Exactly. The "key phrase" that I encounter is "I don't want to have to > think about...". If someone I'm interviewing says that, the interview > tends to end fairly quickly. Hear hear! -Dave -- Dave McGuire, AK4HZ New Kensington, PA

13 years, 7 months

3
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NASA computers circa 1969

by tshoppa＠wmata.com

>> See http://www.youtube.com/watch?v=nrwpXEiTDVk > I noticed but could not identify: > 07:13 calligraphic graphics system with hidden line removal. Could be > an Evans & Sutherland LDS-1, but might be something earlier. > I've seen this system in several NASA films, but I've never been > able to get any information on the hardware used. I scratched my head at that myself. There's a slant to the frame not too different than the perspective you'd get if you had a movie camera pointed at some graphics terminal. Several technologies I know of at that time, would not result in any such slant: State of the art for several scientific application in that area, involved pen plotters (black ink on white paper) transferred to photographic negative movie film. (White image on black). A slightly cheaper approach (used extensively in my area of academia) was line printer paper plots transferred to movie film (again often in negative). Sub-character resolution was possible through choice of characters (not dissimilar to "ASCII graphics" although I know the movies were made using IBM and EBCDIC!) There was talk of direct-laser-to-film but I never saw it. Tim.

13 years, 7 months

2
1
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CFFA3000 and Apple III?

by wheagy＠gmail.com

Mike, Another follow up that probably sheds a bit more light on my Apple III issue. I tried copying some additional disk images today. I tried the CFFA SOS image, but it exhibited the same behavior as the other SOS image...the floppy drive spins for about 3 sec and then nothing. On a whim, I tried the RAM test image. It worked and brought up the RAM test screen and began the test. It stops and indicates bad RAM where shown in the pic in the imgur link below. There appears to be third party RAM in this III. Is that common? Is there a way to test without that RAM that would be recommended? I did reset all of the RAM chips on the board, but it still fails at the same location. http://imgur.com/a/c40m0 On the bright side, I'm thinking this is a good sign for the floppy drive...the down side is obviously RAM issues. Thanks, Win

13 years, 7 months

3
3
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CFFA300 and Apple III?

by wheagy＠gmail.com

A couple other related questions and a comments. I made a Apple III+ system diagnostics disk and that ran fine too. So it seems like the floppy drive is Ok, and all of the tests passed except the RAM test, so that's the big issue. The RAM test disk seems to help narrow down where the bad chip may be, so I might have a chance to find it without trial and error. It looks like there are two different RAM chips on the ON THREE board (as Alexandre mentioned) TMS4164-15NL and D41256C-15. It turns out I have an extra AST SprintDisk for my Apple IIe with a few D41256C-15 chips. If I'm lucky enough that one or more of those is the culprit, I may be covered, otherwise I'll need to source a few chips. If you look at the end of the ON THREE board in the second pic http://imgur.com/a/c40m0 there is a white header connector on the ON THREE board that connects to the male header on the Apple III motherboard. The ON THREE manual indicates that a gentle rocking should loosen the connector. It is a strange looking connector. The pins appear to come through from below and bend at 90 degrees. I've applied quite a bit of force and they are not breaking free. I'm afraid to pull too hard. Any pointers on how these connectors work so I can avoid damage? Thanks, Win

13 years, 7 months

1
0
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Getting an ST-225 disk to work

by cctech＠beyondthepale.ie

> > I made the same experience when I performed a "DEC-format-marathon" with ten > ST-225 drives which were neither DEC-labeled nor where DEC-formatted before. > Most of my disk drives where successfully formatted after having entered the > drive parameters for the "TEST 70" procedure, but in case of some drives, > the procedure was aborted. These drives where not successfully recognised > as RD31 and no format was performed by my microVAX-2000 in these cases. > What I found out is that the drives which were not recognised as RD31's were > drives with some bad blocks detected when formatted with a PC. > Can anybody else comment on or has made that experience? > I successfully formatted several oddball non-DEC-branded drives rescued from a skip (dumpster) using a VS2000. It was a long time ago and I don't remember the details but I suspect some at least had a list of bad blocks on the label. I seem to recall that I did not have any way of knowing what the correct parameters were and I found some by extrapolating from the example in the manual and by trial and error. I agree with the general view that they should be jumpered as DS3 for the internal drive. I eventually made a new drive cable so that I could have a "hot swappable" disk outside the case. This worked great until I came upon one particular drive which, when I pushed the connectors onto it, the VS2000 PSU promptly switched itself off. I was somewhat puzzled as I was using an external PSU for the disk and could not have been overloading the VS2000 PSU or so I thought. I pulled off the connectors, power cycled the machine and tried connecting the drive again and the same thing happened. Not to be defeated, I tried connecting all the cables up and then powering up the VS2000. This time the PSU tried harder, the machine powered up and one of the wires in the data cable turned itself into a heating element, melted and nearly set fire to its insulation. It seems that one of the wires in the data lead to the external drive has a not very well protected +5V on it and at least one drive variant shorts this to ground... Regards, Peter Coghlan.

13 years, 7 months

5
6
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buying an Atari ST

by lproven＠gmail.com

On 31 December 2012 04:27, Zane H. Healy <healyzh at aracnet.com> wrote: > Now that is seriously interesting! I knew there was a reason I was keeping > up with this thread! Thanks! [*Chuffed*] I ought to have given due credit to another of the Giant Brains behind FreeGEM, John Elliott, who is also on the list now, too. John is a hero and a major force in PC-GEM, CP/M and Amstrad-related development, emulation and various other areas, too. -- Liam Proven ? Profile: http://lproven.livejournal.com/profile Email: lproven at cix.co.uk ? GMail/G+/Twitter/Flickr/Facebook: lproven MSN: lproven at hotmail.com ? Skype/AIM/Yahoo/LinkedIn: liamproven Tel: +44 20-8685-0498 ? Cell: +44 7939-087884

13 years, 7 months

1
0
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Installing RSX (was: What PDP11 OS in 20MB Disk Space)

by bqt＠update.uu.se

On 2013-01-01 19:00, "Rob Jarratt"<robert.jarratt at ntlworld.com> wrote: >> >-----Original Message----- >> >From:cctalk-bounces at classiccmp.org [mailto:cctalk- >> >bounces at classiccmp.org] On Behalf Of allison >> >Sent: 01 January 2013 03:06 >> >To: General Discussion: On-Topic Posts Only >> >Subject: Re: What PDP11 OS in 20MB Disk Space >> > >> >On 12/31/2012 04:25 PM, Dave McGuire wrote: >>> > > Straight 11M (non-plus) does. (fits in 10 actually) Early RSTS/E, > like v8, >> >should, but not 10 and likely not 9. RT11 does. >>> > > >>> > > -Dave >>> > > >> >I have RSTS on RL02 so it must fit on 10mb! >> > >> >RT11 fits on anything, the whole build kit is two RL02s (boot and kits) >> > >> >I know of none that do not fit. RSTS and RSX are big and might have to be >> >trimmed >> >a little or some optional part left off. > > I am not sure how you would do that. I am following these instructions: > http://9track.net/pdp11/rsx4_sysgen. > > The trouble is that after restoring the RSX-11M+ 4.2 tape, when I reboot > from the disk it gives repeated disk allocation errors, presumably through > lack of space. Is there a step that needs to be added when first restoring > the tape to the hard disk? Not sure what errors you are seeing, but it sounds weird. Anyway, the normal way to run M+ from an RL02 was/is to use the pregenned system for an RL02, which has all the necessary bits stuffed in, and everything set up. Ready to go. Generating your own system for running on an RL02 takes some careful consideration... Johnny

13 years, 7 months

1
0
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What PDP11 OS in 20MB Disk Space

by robert.jarratt＠ntlworld.com

What PDP11 OS would fit on a 20MB ST-225? I had hoped RSX-11M+ 4.2 would fit, but it doesn't. The OS would need to run on an 11/73. Regards Rob

13 years, 7 months

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2GB Iomega Ditto Drive

by kurt.m.nowak＠gmail.com

Free... Going into my e-waste pile if no one wants it. Just thought Id ask... -Kurt

13 years, 7 months

2
2
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Marsplot Ballwriter pens for Calcomp 104X, 1023

by dave.g4ugm＠gmail.com

I have a packet of five BallWriter pens, part number 40C1 06-9 (is 06-9 the date code?) if any one has a use for them they are theirs for the postage, but as I am in the UK it might be a few dollars. -- Dave Wade G4UGM Illegitimi Non Carborundum

13 years, 7 months

1
0
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SBC V2 PCBs have arrived!

by LYNCHAJ＠YAHOO.COM

Hi! Good news! A new batch of N8VEM SBC V2 PCBs have arrived! In addition I just received an email from the PCB manufacturer that the N8VEM ECB backplane PCBs have been shipped. They should be here in a couple of days. I am guessing later this week. Here are some instructions on how to build the N8VEM SBC V2 for the total beginner but are useful for most any builder http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder <http://n8vem-sbc.pbworks.com/w/browse/#view=ViewFolder&param=Building%20the %20N8VEM%20for%20the%20Total%20Beginner> &param=Building%20the%20N8VEM%20for%20the%20Total%20Beginner The N8VEM SBC V2 and ECB backplane are $20 each plus $2 shipping in the US and $5 elsewhere. Thanks and have a happy new year! Andrew Lynch

13 years, 7 months

1
0
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Wintersale in the Netherlands

by reiche＠ls-al.eu

Hi all, I'm cleaning up the overflowing attic. Most of it will probably be rather painfully expensive to ship, so I guess it might be more for the Dutch people on this list. Some items could be shipped abroad, though. Contact me off-list for details. All prices listed below are exclusive of shipping costs. Book: UNIX Programming Environment soft cover, 15 EURO USB KVM: Sweex USB and Audio KVM switch for two machines, 10 EURO PCs: AMD XP 1900+ with Radeon x850x, 50 EURO Compaq/HP D51s EVO, 25 EURO Fujitsu/Siemens p300 with AHA2940 and 20GB DAT, 25 EURO Apple: PowerMac G4 AGP with white Apple keyboard, 25 EURO SGI: Indy with Indycam, original keyboard/mouse and SGI 20" CRT, 25 EURO Sun: GDM5410 21" Flat Trinitron CRT, 10 EURO Ultra 5 333MHz/400MB, 15 EURO Ultra 10 440MHz/768MB, 25 EURO regards, reiche

13 years, 7 months

1
0
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My Sinclair ZX81 on YouTube

by terry＠webweavers.co.nz

A New Year's look at another one of my classic rest home residents - that triumph of British minimalism, the Sinclair ZX81. http://youtu.be/YcE_HqCOTf4 Terry (Tez)

13 years, 7 months

1
1
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bitsavers RSS feeds corrected

by legalize＠xmission.com

I introduced an error in a recent change to the scripts that generate bitsavers RSS feeds for PDF and bits. The symptoms were that the URLs for intermediate directories were incorrect and the category for files was incorrect. I believe I have corrected those errors and the scripts should be working properly again. -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

13 years, 7 months

1
0
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Getting an ST-225 disk to work

by robert.jarratt＠ntlworld.com

I have a Seagate ST-225 that I want to put into my Micro PDP-11/73. At the moment I am just trying to see if the disk works at all and if I can format it in a MicroVAX 2000. It spins up but the TEST 70 and TEST 71 commands fail on it, unable to determine the type of disk. There are some jumpers for which I have found some documentation here: http://stason.org/TULARC/pc/hard-drives-hdd/seagate/ST225-21MB-5-25-HH-MFM-S T412.html, but I am not sure which is pin 1, and I am not sure what settings the MicroVAX 2000 wants, or if it needs the resistor termination pack. Can anyone tell me which jumper settings I need for the disk to work in a 2000? And whether I need the resistor pack installed? Thanks Rob

13 years, 7 months

6
13
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Question about DEC PMI Processors & Gear Acquisition

by bqt＠update.uu.se

On 2012-12-30 23:00, Glen Slick<glen.slick at gmail.com> wrote: > On Sat, Dec 29, 2012 at 3:44 PM, Jerome H. Fine<jhfinedp3k at compsys.to> wrote: >> > >> >So the quick answer is probably that all M8190 boards are PMI capable, but >> >the PMI is not activated if PMI memory is not present in the correct >> >slot(s). >> >In addition, probably all M8190 boards are happy being placed into a VT103 >> >backplane which will not support PMI activation. >> > >> >Of course, I can't guarantee there won't be magic smoke released if the >> >M8190-AE >> >is placed into a VT103 backplane. >> > > I remain skeptical that everything will just be fine if you place an > M8190 KDJ11-B into a non-Q22/CD backplane. > > If you look at Table 2-9 (page 2-19) and Table 2-10 (page 2-20) in > EK-KDJ1B-UG_KDJ11-B_Nov86.pdf, won't placing an M8190 into a > non-C22/CD backplane essentially connect the CA1-CV1 signals in Table > 2-10 straight through to the AA1-AV1 signals in Table 2-9, and same > with the DA1-DV1 signals and the BA1-BV1 signals? That doesn't seem > like something that would allow normal functioning. I think you are right, Glen. The M8190 is intended to sit in a Q-CD slot, not a Q-Q. I'd surprised if it works. However, if you ever want to put an M8190 in a VT103 you need to rewire the backplane anyway, as the VT103 backplane don't even do Q22 if I remember right. > Also, it is clear from Table 2-10 that the PMI signals on the M8190 > only exist on the top (component) side of the board and can only > communicate over the PMI with memory boards physically located above > the M8190. Correct. The PMI memory for PDP-11s work in both Q-CD slots and PMI slots, but they only perform as PMI memory if they sit above the CPU in a Qbus backplane. I'm not sure the PMI memory boards would work in Q-Q slots either... Johnny

13 years, 7 months

3
2
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USB and PCI (was Re: DP8473A (was IBM Displaywriter

by gerardcjat＠free.fr

About John's design If I understand correctly, your are using one of the newest Xcore product, I guess, mainly for USB "full access", and this new chip is not yet available, is it ? Question, because your project seems very interesting to me : Why did you chose that Xcore product, versus already available chips like PIC 32 ?. I am NOT a specialist about chips, but I do not see much difference between the two, USB speaking. Do you take advantage of the multi-core chip ?? To me ( again, I am not a specialist, so pardon the question ) Is complexity of multi cores chips "justified" for that kind of interface ? I mean architecture and compiler learning complexity balanced versus advantages ?? Or is it just for the learning fun ;-)

13 years, 7 months

2
1
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IMSAI FDC-2

by m.schoeller＠gmx.ch

Dear Mr. Watzman I am an IMSAI 8080 owner from Switzerland. Currently i look for an IMSAI FDC floppy system with CalComp 140 drives. I startet my search for this floppy system several years ago, but i could never found it. Now, i'm googling on IMSAI FDC and your name is the first result what i see. I contact some peoples (Todd Fischer, Herb Johnson, John Monahan and Howard Harte (who never answered)) and some others. Well, did you now who has one of these and they are willing to sell? Thanks in Advance Matt Schoeller Switzerland

13 years, 7 months

1
0
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IBM Displaywriter software?

by rampaginggreenhulk＠yahoo.com

------------------------------ On Wed, Dec 26, 2012 8:29 AM PST Al Kossow wrote: >On 12/26/12 6:48 AM, Colin Eby wrote: >> Al, >> >> I'm away for the holidays, but could have a rummage at TNMoC when I return. > >will do. > >I'm trying to work down the backlog of IBM media I have to image over the holiday break. >One thing I noticed is getting track 0 to read correctly is picky about the controller >used with Imagedisk. An Adaptec AHA-1522 works correctly with a National DM8473A. >The Displaywriter supported either single or double-sided drives. > > > > who made the drives in the DW? Are they useful for imaging with a modern pc?

13 years, 7 months

14
71
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Getting an ST-225 disk to work

by shadoooo＠gmail.com

In the past I successfully low-level formatted PC-formatted ST225 using XXDP2.5 directly on PDP11/53 with RQDX3. If I remember correctly, I used ZRQCH. As I had a machine with RX33 (5"1/4), I prepared a booting image of XXDP on SIMH, transferred the image to floppy disk with vtserver, then executed the diagnostic program, inserted the right parameters, and voil?. It worked like a charm on all the ST225 I have, also on one that have a lot of defective sectors. Andrea

13 years, 7 months

1
0
0 0

USB and PCI (was Re: DP8473A (was IBM Displaywriter

by gerardcjat＠free.fr

Hello ALL ! I have got an strange idea for the last day of the year ( It was time ;-) ) I am wondering about a PCI to EXTERNAL ISA interface board. Here is what in think of : PCI interface board INSIDE a present days PC, LINKED TO external ISA passive backplane. ( outside of the PC ) With , ideally, as discussed before on this thread, DMA possibilities Does it ( still ? ) exist some ***afordable*** commercial product ? Does that has been already discussed somewhere on this forum ? Does someone built that kind of interface , DIY way, in the past ? Will there be restrictions on this connectivity, if the PC "reverse" ( is run ) under plain DOS versus running DOS under Windows ?? PLS, remember that I am a new comer on this file, so I may be sligthly out of topic in this thread. If so , my apology. Thanks and Happy New Year Everybody !!

13 years, 7 months

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buying an Atari ST

by tom_a_sparks＠yahoo.com.au

> At 4:19 AM +0000 12/31/12, Liam Proven wrote: >> On 27 December 2012 15:00, William Barnett-Lewis <wlewisiii at gmail.com> > wrote: >>> ? I wonder what the state of the art in Atari emulation is? >> >> Very good, I believe. There are various emulators for gamers which can >> emulate different early/original models with great fidelity so that >> you can run demos and so on - this is the main focus. >> >> There are also some emulators for those who wish to run desktop TOS apps. that's more wait I want :) >> >> Also, x86 PC GEM itself is now GPL open-source: >> http://www.deltasoft.com/Default.htm >> >> (The FreeGEM community is where I first "met" CCmper Gene Buckle.) >> >> There have been efforts to bring across some of the Atari >> improvements, but development largely stalled quite a few years ago. >> >> On the Atari side, various people wrote replacements of various bits >> of TOS - the VDI, the AES, the desktop and so on - and some of these >> parts were FOSS. >> >> Eventually, the result was a complete FOSS Atari OS, containing almost >> no original Atari code but highly compatible. It's called AFROS and it >> runs best on an emulator called ARANYM, which is designed for running >> TOS and TOS apps on PCs, rather than games. >> http://aranym.org/ > > Now that is seriously interesting!? I knew there was a reason I was > keeping up with this thread! more websites to bookmark > > Zane

13 years, 7 months

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Fans for a PDP-9?

by michael.99.thompson＠gmail.com

Does anyone know of a source of fans for a PDP-9? You can see one of the fans at the right of this image: https://sites.google.com/a/ricomputermuseum.org/home/Home/equipment/dec-pdp… -- Michael Thompson

13 years, 7 months

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Question about DEC PMI Processors & Gear Acquisition

by captainkirk359＠gmail.com

Hello everyone! I have a question which to some might seem rather obvious to some, but I cannot find the answer. And guessing by my recent streak of luck I'll probably find the answer to this question after posting the question to the list... Nevermind, back on topic. The question at hand: Can a PMI processor -- in this case a KDJ11-BF -- be put into a non-PMI serpentine QBUS backplane? Or will the magic smoke be released. If the answer is a resounding "no". Any one here have a KDJ11-AC (M8192-YC) they'd be willing to trade for a KDJ11-BF (M8190-AE)? I'm also interested in some other QBUS '11 boards, a -- short -- list follows, in order of precedence: > DLV11-J/DLVJ1-M (M8043) -- or compatible > QBUS (non-PMI) memory -- I'd *LOVE* to get an MSV11-QC (M7551-CA, 4MB), -QB (-BA, 2MB) or -QA (-AA, 1MB) memory board; I'd also be fine with a 256KB MSV11-LK (M8059-K*) board > 22-bit compatible boot ROM board -- e.g. The BDV11 (M8012) revision E. > QBUS SCSI controller -- I'm really gunning for the CMD CQD-220A/TM, though I'm for any form of QBUS SCSI controller that can be both TMSCP tape and MSCP disk controller at the same time > DRV11-J (M8049) -- or compatible > DHV11 (M3104) -- or compatible > LPV11 (M8027 > DELQA (M7516) -- or compatible I would love to get all DEC original boards -- save the SCSI controller, as I would the system to have mostly DEC innards. If any one can tell from that list, I'm setting up a complete PDP-11 system. In this case replacing one. Don't ask what happened to the machine that is being replaced be cause I will go on a twenty minute long rant consisting of nothing but swearing. Many thanks for any help offered! Cheers, Christian G.

13 years, 7 months

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buying an Atari ST

by wlewisiii＠gmail.com

I wonder what the state of the art in Atari emulation is? I'm an old Amiga person rather than Atari one so every so often I get an urge to go buy an Amiga 4000. Instead I fire up my copy of E-UAE running AmigaDOS 3.9 and the urge goes away. It runs some old games better than my A500 ever did and I can run the AGA stuff my older machines never could without massive modifications. My eventual goal is to get an old netbook and dedicate it to just running WinUAE. Perhaps the OP might find an Atari emulator the same way? > Date: Wed, 26 Dec 2012 20:09:30 +0100 > From: Jonas Otter <jonas at otter.se> > On Tue, 25 Dec 2012 20:33:36 -0800, "Zane H. Healy" > <healyzh at aracnet.com> wrote: >> At 7:54 PM -0800 12/25/12, Tom Sparks wrote: >>> >I am looking at buying an Atari ST, witch model should I look into buying? >> The TT030 is nice very nice and takes a VGA monitor, but I rather >> wish I'd gone for a Falcon. Of course I got my TT030 nearly 15 years >> ago, it was hard to get then, I hate to think how hard it might be to >> get any Atari ST now, or what any Atari computer might cost. >> >> Zane > They are fairly common on auction sites here in Sweden, I got my > 1040STFM a couple of years ago for about 50 Euro, with 2 joysticks, a > custom-built flight case and about 200 floppies with pirated games on. > > If you are prepared to pay for shipping from Europe, you could have a > look on ebay.de (Germany) for example, or one of the other European > national ebay sites. I got mine from Tradera which is owned by ebay > (www.tradera.com), they turn up there every now and then, mostly 520s > and 1040s. Shipping would probably be quite expensive though. > > Jonas William -- Live like you will never die, love like you've never been hurt, dance like no-one is watching. Alex White

13 years, 7 months

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thinking of selling my PDP-11/23+

by charlesmorris800＠centurytel.net

I have a functioning PDP-11/23+ system (4 Mb RAM, 16-line serial card, two RL02's; RT-11XM, TSX-Plus) in the half-height "corporate cabinet". Since I got it running and played ADVENT a few times, I find I never use it... would anyone be interested in buying it? If so I'd much prefer you came and picked it up; located in West Plains MO. Email me for pictures. thanks Charles

13 years, 7 months

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CFFA3000 and Apple III?

by wheagy＠gmail.com

Mike, Thanks. If that's the case, let me try making a couple more disks using different disk images that I can find online and see if I have any better luck. If not, I'll try the drive speed adjustment. If you don't mind sending me a pointer for that, it sounds like it would be a good thing to have regardless of whether I need to use it this time or not Thanks, Win --------- Hi Win, It sound like the floppy you created from the image is good -- usually you get the immediate "Retry" message if the III can't recognize the disk at all. As long as you used the CFFA to create the disk from the image, just as you would an Apple II disk, it should work. >From what I've experienced, what you're seeing is usually (but not always) one of two things: 1) The disk image you used to create the image has a driver installed for a piece of hardware that isn't present in your system (i.e, a ProFile drive) and SOS has loaded the driver and is waiting for the peripheral to respond. SOS is supposed to be smart enough to realize that hardware isn't there and move on with the loading process, but it doesn't always work that way. or 2) your drive needs to be adjusted. I have about two dozen Disk III drives and every single one of them required a speed adjustment before they would work when I acquired them. LMK if you need the procedures for that. - Mike

13 years, 7 months

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AT&T 6300 mono monitor

by rampaginggreenhulk＠yahoo.com

------------------------------ On Sun, Dec 30, 2012 2:45 PM PST Chuck Guzis wrote: >On 12/30/2012 01:37 PM, Chris Tofu wrote: >> >> >> C: Where are you getting this from? I don't see it googling. Does it contain artwork for the DEB board? >> >> NM NM NM. Does anyone have one though? Does it simply add memory to the display board? > >I've concluded that I must have a differnt Google (my own "Cole Porter", >if you will permit a Python allusion) than everyone else: > >http://m24.museodelcomputer.org/site/doc.html > >Enjoy, >Chuck > > did you stop to think what "NM" meant? IOW I found it.

13 years, 7 months

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AT&T 6300 mono monitor

by aliensrcooluk＠yahoo.co.uk

--- On Monday, December 31, 2012 1:04 AM, Fred Cisin <cisin at xenosoft.com> wrote: >> >> NM NM NM. Does anyone > have one though? Does it simply > add memory to the display board? > > >I've concluded that I must have a differnt Google (my own "Cole Porter", > > >if you will permit a Python allusion) than everyone else: > > >http://m24.museodelcomputer.org/site/doc.html > On Sun, 30 Dec 2012, Chris Tofu wrote: > > did you stop to think what "NM" meant? IOW I found it. > > Non-Maskable. [interrupts] > > New Mexico??!? . . . NM = nevermind (chatrooms and txt speak)

13 years, 7 months

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Question about DEC PMI Processors & Gear Acquisition

by jonas＠otter.se

On Sat, 29 Dec 2012 20:27:48 -0500, Christian Gauger-Cosgrove <captainkirk359 at gmail.com> wrote: > Yes, I'm never again letting the machine out of my sight or leaving > the house without Crazy Psycho Bitch Lady With No Respect For Personal > Property in tow, and/or the machine and rack bolted to the floor, > wall, and any available fixed surface. Because*I* didn't do anything > to lose my entire PDP-11 system beyond living at my university dorm. > CPBLWNRFPP did something to my system and it is out of my possession > without any way for me to get it back -- and she can't give me a > straight story as to whether she threw the machine out, or sold it. > Personally since she has no idea what the machine was other then an -- > in her words -- "old, dirty, fucking computer" I think she carted it > to the dump and tossed it. Oh and it was*FAR* from dirty as I made > sure to keep it spotless (the all white bevel/faceplate drove me nuts > as it seemed to attract dust from everywhere in a three light year > radius... just like my piano). Get Rid Of Her. Now.

13 years, 7 months

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CFFA300 and Apple III

by wheagy＠gmail.com

Mike, I read the relevant chapters and have a bit better understanding of the Apple III...I think. I tried making an SOS disk today using my Apple IIe and the CFFA3000 with some Apple III dsk images i found online. I used ProDOS and was able to format the floppy and it appeared to copy the image onto the floppy. At least it said it was successful, but when I tried booting the III with it, the drive spun for about 3 seconds and then stopped and nothing else happened...nothing on the display. Should it work to copy a floppy like this using ProDOS on a IIe for use on a III? Is there another utility that would be better suited to copy the disk? Thanks, Win Unlike the II, which is relatively easy to configure to boot to any (bootable) storage device in nearly any slot, the Apple III tries to boot only from the internal floppy drive, and as Eric pointed out, you'd have to roll your own ROM to change that behavior. The CFFA3000 works nicely in the III, but you lose the Drive ][ emulation capability and you can't boot directly to it. In the Apple III, everything is seen as a device and requires a driver that SOS loads as it boots in order to be accessible to the system during operation. You can't (easily) boot directly to the CFFA because SOS requires a driver to be able to recognize it. Fortunately, SOS is close enough to ProDOS that you can use the CFFA in an Apple II to create floppies from the images you downloaded. I'd suggest reading this PDF for more on how the III works: http;//apple2scans.net/scans/manuals/3rd.party/OMHGYA3.pdf It's the Osborne McGraw Hill Guide To Your Apply III. Pay special attention to Chapters 3 and 4. LMK if you have any questions about all this. - Mike

13 years, 7 months

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Dead Intel MDS

by williams.dan＠gmail.com

Hi, I have managed to get around to having a look at this machine. It is a model 231. I am getting nothing on the screen and no beeps when in diagnostic mode. The PSU is on and the fans are running. I have checked the schematics and the voltage is correct on all pins coming out of the supply and there is voltage going into the screen. The screen is not 'firing' up as I would expect. I am not an expert on CRT's Anyone know anything about these machines or how to proceed. I have found online service manuals for the screen and machine as well as full schematics for both. Thanks Dan

13 years, 7 months

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AT&T 6300 mono monitor

by hendrikvandewerken＠gmail.com

On 28 Dec 2012 20:02:21 Chuck wrote: >Maybe I've got the name wrong--perhaps it was called the EDB--it was a >display enhancement board added to the M24 and attached to the standard >controller that provided 16 colors per pixel (IIRC) in 640x400 hi-res mode. I see, I think you mean the EGC (Enhanced Graphic Color board). I never had an EGC board but I have the user guide of it. The board adds three bit planes to the one of the Indigeneous Card (IND), so it provides 16 color capability to the higher screen resolutions and it adds the flexibility of a color/shades of grey Look-Up Table (LUT) The video bit planes are laid out as folows: A0000h-A7FFFh Bit plane 0 (EGC) A8000h-AFFFFh Bit plane 1 (EGC) B0000h-B7FFFh Bit plane 2 (EGC) B8000h-BFFFFh Bit plane 3 (IND) The MDA card has the following memory layout: 4k of RAM at address 0B0000h for its display buffer. This address is not completely decoded; the entire 32k from 0B0000h to 0B7FFFh is filled with repeats of this 4k area. I/O addresses 03B0h-03BFh. As you see the memory of Bit Plane 1 overlays that of the MDA card completely. So I think it will cause serious problems. Are you familiar with the card? Do you have one? Greetings, Hendrik

13 years, 7 months

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need a keyboard for a Tektronix Prism 3002x anaylyzer

by rampaginggreenhulk＠yahoo.com

the 'x' denotes subsets, such as 3002P, etc.

13 years, 7 months

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need a keyboard for a Tektronix TC-2000

by rampaginggreenhulk＠yahoo.com

identifiable by the dial on the right side (jog dial?).

13 years, 7 months

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Question about DEC PMI Processors & Gear Acquisition

by bqt＠update.uu.se

On 2012-12-30 19:00, Christian Gauger-Cosgrove<captainkirk359 at gmail.com> wrote: > On 29 December 2012 21:08, Toby Thain<toby at telegraphics.com.au> wrote: >> >Does that follow? PMI is a non-bus (private!) ribbon cable jumper from CPU >> >to RAM. >> > > You're mistaking uVAX memory with PDP-11 memory. uVAXen have the > ribbon cables, and the CD slot. On the PDP-11 processors and RAM (and > QBUS to UNIBUS adapter -- KTJ11, I think it is called -- in the 84 and > 94) the PMI is all on only the CD slots of the board. Correct, PMI memory on PDP-11 machines is just communicating on the CD slots. No ribbon cables. However, I'd like to point out that the 11/83 also can use PMI memory. The thing to understand is that for the memory to be connected on the PMI, it needs to set *before* the CPU on the Qbus, and be PMI capable. The same memory placed *after* the CPU means it acts as normal Qbus memory. Some difference in performance. When sitting in the 11/84, the memory sits after the CPU, but all the first four slots are PMI slots in that box, always. Actually, PMI is also not only on the CD slots. A few signals in the AB slots are working differently than in a Qbus as well. And to point out one last, obvious thing, the PMI on the VAX is a bus, even through it's on a ribbon cable. Why would that make it not a bus? Johnny

13 years, 7 months

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Tektronix TC-2000 on eBay

by rampaginggreenhulk＠yahoo.com

it's either dead broke or suffering from oxidation/microbial issues. Not worth 120$ to me, but if you're interested perhaps you can talk them down (considerably). Mine was delivered working, but after I pulled it out of storage it exhibited the same behavior as that. Fairly rare, but they turn up.

13 years, 7 months

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AT&T 6300 mono monitor

by jce＠seasip.demon.co.uk

Chris Tofu <rampaginggreenhulk at yahoo.com> wrote: > From: Chuck Guzis <cclist at sydex.com> > > Maybe I've got the name wrong--perhaps it was called the EDB--it was a display enhancement board added to the M24 and attached to the standard controller that provided 16 colors per pixel (IIRC) in 640x400 hi-res mode. > > --Chuck > > C: I would love details on that board if anyone has them. Where's Jim Leonard? There's a GEM driver in three incarnations (ATTDEBP6.SYS for GEM 2.1 SDDEB7.SYS for GEM 2.2 SDDEB8.EGA for GEM 3.0) that supports the Display Enhancement Board. The FreeGEM driver source at <http://www.seasip.info/Gem/drivers3.html> includes the latest source for this driver; it's in the files whose names begin DEB. -- John Elliott

13 years, 7 months

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An interesting article on text-book vrs real-world programming

by teoz＠neo.rr.com

----- Original Message ----- From: "Bill Sudbrink" <wh.sudbrink at verizon.net> To: "'General Discussion: On-Topic and Off-Topic Posts'" <cctalk at classiccmp.org> Sent: Thursday, December 27, 2012 9:45 AM Subject: RE: An interesting article on text-book vrs real-world programming > Dave wrote: > > Where things really count (embedded, real-time systems) > those practices are still maintained. Although I will > say that recent CS grads with their "extreme programming" > and all of that happy horse sh*t are harder to bring on > board these days. Consequently, we're hiring fewer and > fewer "young" programmers these days... let them get > their lumps on someone else's dime, we'll take the older > more experienced guys that have learned why good practices > are important. > > Bill S. > Yup, everyone is waiting for somebody else to train them, good luck with that.

13 years, 7 months

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Setting up a DMC11 on TOPS-10

by robert.jarratt＠ntlworld.com

Some work is being done to get a DMC11 emulation into the SIMH PDP10 emulator. I would like to get DECnet running on TOPS-10 over the DMC11, but I have absolutely no idea where to begin, I only ever used TOPS-20 and never with DECnet and never did any admin things on it anyway. Can anyone offer any pointers on how to get started? Before anyone asks, I understand that TOPS-10 uses the DMR11, but this is so similar to the DMC11 that it may not notice the difference or I can fix the emulation for the minor differences. Thanks Rob

13 years, 7 months

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An interesting article on text-book vrs real-world programming

by legalize＠xmission.com

In article <03ba01cde440$cf014820$6d03d860$@sudbrink at verizon.net>, "Bill Sudbrink" <wh.sudbrink at verizon.net> writes: > Dave wrote: > > It seems things have gone horrible, 50 years ago the code > > where I worked was generally good. When I worked on a > > professional development team we had coding standards that > > were adhered to, did code walk throughs, and had proper > > documentation. These days it seems we don't have time for > > the checks and balances that make code maintainable and > > reliable. > > Where things really count (embedded, real-time systems) > those practices are still maintained. Although I will > say that recent CS grads with their "extreme programming" > and all of that happy horse sh*t are harder to bring on > board these days. If you think "extreme programming" is horse shit, then you don't understand what "extreme programming" is all about. Go read Kent Beck's book. Go read The Agile Manifesto. -- "The Direct3D Graphics Pipeline" free book <http://tinyurl.com/d3d-pipeline> The Computer Graphics Museum <http://computergraphicsmuseum.org> The Terminals Wiki <http://terminals.classiccmp.org> Legalize Adulthood! (my blog) <http://legalizeadulthood.wordpress.com>

13 years, 7 months

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FS: A ton of mac stuff- CHEAP

by slandon110＠gmail.com

Clearing out more stuff I got a nice Mac SE/30 Working with keyboard and mouse Will come with 64MB RAM to install and a 2GB 50pin SCSI Drive $125 shipped A Mac IIci 24MB RAM 1GB HDD emachines 16bit VGA Nubus card Ethernet Card Dayna Turbo040 40mhz 040 upgrade card. and a 40mhz Radius Rocket Card installed $200 shipped or best. Also has a matching Mac monitor to go with it if you need it. Keyboard and mouse included as well. The radius rocket is pretty hard to find, lets you run another instance of the mac os on the card Still got lots of Apple IIGS RGB Monitors as well $50 shipped anywhere in the USA Along with Apple Monitor //s For 50 shipped anywhere in the USA Some of the cheap machines Power Mac 8100 in nice shape at least a 1GB HDD in it and 32MB RAM. Comes with G3 upgrade card $75 shipped PowerMac 9600/300, The last six PCI slot mac, really nice, 64MB RAM 4GB HDD $120 shipped Got the following machines for 50 bucks each shipped Quadra 610 8MB RAM/250MB HDD Centris 650 8MB RAM/500MB HDD Performa 600 8MB RAM/250MB HDD Mac IIcx 8mb ram/80MB HDD Power Mac 7100s, all have at least 16MB RAM in them and 500-1GB HDDs Power Mac 6100s all have at least 8MB RAM in them and 250MB-1GB HDDs, includes the Performa 6115 and whatnot. Got multiples of each. Steve

13 years, 7 months

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IBM Displaywriter software?

by rampaginggreenhulk＠yahoo.com

------------------------------ On Sat, Dec 29, 2012 1:09 PM PST Fred Cisin wrote: >> > > > SHUGART 801 is SINGLE sided >> > > > SHUGART 851 is DOUBLE sided. > >> > ONCE MORE! >> > Do you want to read double sided disks? > >> > If so, then you need the 851. Option board will certainly >> > not give you capability of reading double sided disks in a >> > single sided drive. > >On Sat, 29 Dec 2012, Chris Tofu wrote: >> C:\DERP> But the option board just reads flux. Why couldn't you put a >> double sided disk in a single sided drive and read it off. My Commie >> 1541-II used to read the one side of a single sided disk. Maybe I don't >> have an acceptable understanding of what the Option Board/software does. > >Your commode doesn't use index pulse. > >With the option board and a double sided disk in a single sided >drive, you will be able to read the first side of the disk. >If you flip the disk over and put it in backwards, the >Option Board SOFTWARE will not work at all, because it won't >see any index pulse. (NOT USED in Commode, Apple][, and Atari) > >IF you repunch the jacket, or modify the drive for an >additionalindex sensor, so that it sees an index pulse, >then the Option Board software will still be useless, >because it can't understand backwards tracks, and they >never considered adding such a capability to the software >just because you won't get a double sided drive for your >double sided diskettes. > >IFF you repunch the jacket or modify the drive, AND write >your own software from scratch for a flux-transition board, >then there is no reason why you couldn't read the second >side of the disk by flipping it. >Is it THAT hard to find a double sided drive?? > >-- >Grumpy Ol' Fred cisin at xenosoft.com > hows about reversing the motors direction, perhaps using a twisty belt for the udder sides? Money is an issue at the moment, considering it migh take the better part of a c note to have it delivered.

13 years, 7 months

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AT&T 6300 mono monitor

by a.de.gelder＠hccnet.nl

On 24 Dec 2012 20:39:59 Chuck wrote: >It's interesting that you managed to install >an MDA with the "built in" adapter; >maybe there's still some life in my >old Herc Plus card. I have never succeeded to start up with a Hercules card (or clone) installed. In any case the memory overlaps that of the Indigeneous card, what would cause display problems if start up would be succeeded. As memory serves me well there is a Hercules clone that can emulate an MDA card, but I never had one. On 24 Dec 2012 20:39:59 Chuck wrote: >Does the two-monitor setup work for all revisions of the BIOS? Does it >work if you have the EDA card also installed? I think it does, but my M24's have the 1.43 ROM version, so I cannot check it. Mmm, I don't know an EDA card, sorry. Greetings, H.

13 years, 7 months

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DP8473A (was IBM Displaywriter software?)

by gerardcjat＠free.fr

Hello, It's the first time I post on this forum, so please, bear with me .... About PCI to ISA cards, ** possibly ** with DMA : Did you check theses guys : http://www.costronic.com.tw/ They manufacture lot of "interface" boards ( PCI, ISA, etc ... ) and have a lot of things, may be there is something of interest for you ? ( I mean : with DMA )

13 years, 7 months

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more shameless parts trafficking DEC LA12 Correspondent.

by ittybittybytes＠gmail.com

Clearing out more stuff. Goes on Ebay tonite at 7:00pm 251205551653 Apollo series 400 $49 251205617681 Pdp11/73 & MV2 boards $399 251205572249 Pdp 11/04 Unibus prog console $399 251205610973 DEC DecWriter Correspondent LA12 $199 251205547379 DEC BA23 cabinet shelfs/brackets $39.00 251205601864 Dual 8" floppy system w/unibus Ctrler $189.00 251205593426 Apple Mac IIfx w/ethernet card $99.00 251205606245 DEC VT100 $149.00 251205602838 DEC TU58 tape drive &2 tapes $99.00 Tom P. (tcp1022)

13 years, 7 months

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System/36 manuals

by colineby＠isallthat.com

Sorry, My bad. I've actually scanned one or two of these for Al in the dim and distant past. But I'd never done the whole set. --Colin Dave McGuire <mcguire at neurotica.com> wrote: > > Al is the one looking for them, not me. > > -Dave > >On 12/28/2012 06:57 PM, Colin Eby wrote: >> Dave, >> >> This is one set of manuals I know TNMoC archive does have (cause I >> donated them). Are you looking for something in particular? None have >> been scanned yet. I might be able to do something by special >> arrangement though. I'm back in the weekend by the 12th. >> >> On Fri, 2012-12-28 at 14:53 -0500, Dave McGuire wrote: >> >>> On 12/28/2012 12:09 PM, Al Kossow wrote: >>>> I've been working on getting my S36 maint drawing set uploaded, and >>>> realized >>>> that I don't have very many manuals for the system. Does anyone have any >>>> that >>>> they'd be willing to have scanned? >>> >>> I have lots of S/36 manuals. It will be awhile before I can unearth >>> them, but when I do, I can likely provide them. >>> >>> -Dave >>> >> >> > > >-- >Dave McGuire, AK4HZ >New Kensington, PA >

13 years, 7 months

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Kaypro help

by brain＠jbrain.com

It appears I am clueless about Kaypro machines * The machines: 4, 4+88, 10, and 1 * Can't get anyone of them to boot. All but the 4+88 boot to a screen, but nothing else. I have a K1 CP/M disk someone from the list sent in 2009, and I tried that in all of them, to no avail. The disk on the 1, at least, seems to work, as it knows when I put in a non OS disk, and tells me, but nothing else. If it had a read error, would it not tell me? It does move the head and such when I insert the OS disk, so it appears to be reading it. Still, it never drops to a prompt. * Looking for parts. The 4 needs ESC and 7, the 10 needs 'right arrow', both the 10 and 4+88 need the little telephone jack in the KB. 10 needs a new fan, it's getting power, but no spinning. 4+88 needs fuse holder, and 4 needs reset switch. Missing a small screw on the KB catch as well. Before I start trolling eBay for a donor Kaypro, I thought I would ask around here. * The 4+88 needs major help. drives don't respond, screen does not come up, nothing looks alive. I'd ship it to someone who wanted to take a look at it, as it'll take me a year to start going through it. Or, maybe I should put the 4-84's guts into it (keeping the 8088 and extra RAM) and use the rest of the 4-84' for parts? All except the 4+88 are in good cosmetic shape. The outer top shell of the 88 is in rough shape, though the KB is in great shape save the RJ14 jack (or whatever they are called) My regret is that I should have tested the system disk I previously received as soon as I got it in the mail, but we moved shortly after receiving it, and have not had the items out of storage since 2009. So, the disk could have been mishandled by me or the movers in the interim.Jim -- Jim Brain brain at jbrain.com www.jbrain.com

13 years, 7 months

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*very rare* NEC APC III on eBay, Wisconsin Rapids, WI

by rampaginggreenhulk＠yahoo.com

no keyboard unfortunately, but I have one, and could help the buyer get it up and running. Extremely rare pseudo compatible. I've never seen one o/w on ebay. Shipping is high, but maybe you can talk about that.

13 years, 7 months

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test-drb