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

Interest in a PDP-8/e/a/f/m 32K RAM kit?

by derschjo＠gmail.com

Sign me up! Josh -----Original Message----- From: "Steve Lafferty" <steve at tronola.com> Sent: ?3/?4/?2014 8:56 AM To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> Subject: Interest in a PDP-8/e/a/f/m 32K RAM kit? I've heard from a fellow, Vince S., who has created a PCB layout for the PDP-8/e 32K RAM design presented in my article on Tronola.com. He's considering a Kickstarter launch to offer a $95 kit of parts and PCB but is wondering if there is sufficient interest. If so, please let it be known. Features include: - Battery backup with estimated 10-year data retention. - Inhibit on power fail to prevent memory corruption. - Most of the full size Omnibus board offers a prototyping layout. - Cooperation with any mix of core memory boards. Switches disable 4K fields. - Compatibility with Omnibus specs. - All through-hole parts, for easy assembly. I'm not associated with the project, other than having published the article and encouraging his efforts. Vince has published lots of PDP-8-related and other layouts on his website and will make this one available as well: http://so-much-stuff.com/pdp8/cad/cad.php The article is at: http://www.tronola.com/html/ram_for_pdp-8e.html Thanks, Steve Lafferty http://www.tronola.com/

12 years, 4 months

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FLEXTRAN for the PDP-11

by lbickley＠bickleywest.com

Does anyone have a copy of FLEXTRAN for the PDP-11? I have an instrument (containing an LSI-11/2) that was designed to work with FLEXTRAN. It came on two or more diskettes - one containing the compiler/interpreter and the other(s) contained libraries and/or applications. Cheers, Lyle -- Bickley Consulting West Inc. http://bickleywest.com "Black holes are where God is dividing by zero"

12 years, 4 months

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2.11bsd disk max sizes

by roe＠liveblockauctions.com

Im installing 2.11bsd on a pdp11/83 with a 2 gigabyte Scsi hard drive connected to a CMD CQD220TM. Does anyone happen to know the maximum disk, partition, and file system sizes for 2.11? Thanks.

12 years, 4 months

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Small narrow SCSI disks: no interest in a DEC RZ56?

by lproven＠gmail.com

Given that the last 2 DEC Storage Units I've sold have gone quite quickly, and that every time I comment that I've not got much for small SCSI disks, I get a flurry of emails from listmembers going "noooooo, I missed it!", well, I'm a bit surprised there's no apparent interest in the current listing - an RZ56 in a clean neat SEU. http://www.ebay.co.uk/itm/271411499867 I also have a 6GB narrow SCSI Quantum, tested, working and freshly-formatted, going for 1p. I realise that 6 gig isn't small by retro standards, but I thought it might be of use to someone: http://www.ebay.co.uk/itm/271412312175 -- 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

12 years, 4 months

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PDP 8/e, RK8E Weirdness - !!FIXED!!

by rickb＠bensene.com

Hello, everyone, I am happy to report, at least so far, my RK8E/RK05 are working well after applying the hardware patch to the RK8E that was suggested by David Humphries, who had a similar issue some time back, and engineered this fix. I have successfully formatted a known good pack, ZEROed the directory structure on RKA0: and RKB0:, and was able to do a DIRect on both filesystems and they came back with no errors. I was then able to successfully copy RXA0: (my boot RX01 floppy) to both RKA0: and RKB0: with no problems. I then deleted everything on RKB0: and did a SQUISH on it, and it was all good. I am able to create new files, I ran a PAL assembly of the DHRKAE (Diskless RK8E Controller Diagnostic), with the source, binary, and listing directed to RKB0:, and everything sailed through with no problems. I have the oscilloscope hooked up to the CLK, LOAD, and LSB of the Current Address Counter, and the transient that was on the CLK line is GONE. Right now the system is running the RK8E Confidence Test (which takes quite a while). So far, so good. Before I document the hardware patch, a word of warning -- there are quite a few different versions of the RK8E, as well as a lot of different ECO's (Engineering Change Orders) that were made to the board set over time. Some of the ECOs were related to trying to fix this known timing issue in some PDP 8/e/f/m systems. The fix may not work in all cases. Be aware of the revision level of your RK8E -- you may have to adapt the fix if your RK8E is showing this issue. I strongly advise scoping the Current Address Counter CLK and LOAD lines to verify that your system is having the spike on the CLK line before trying the fix. Also, I take no responsibility for anything that happens to you, your RK8E, your PDP 8, or your RK05 drive, nor do I take any responsibility for this fix working in your system. You are on your own. My RK8E appears to be at revision level B for the board set, and it has a number of ECO wiring on both the M7104 and M7105 boards. The M7106 board is virgin, with no ECO wiring. The issue is caused by a timing relationship between the IOT decoder that generates a strobe when the DLCA (Load Current Address Counter) instruction is decoded, and the system TP3 timing signal generated by the CPU. Depending on the timing of these two signals, a transient can be generated on a clock line for the string of three 74161 synchronous binary counters that make up the Current Address Counter. This transient can cause the Current Address Counter to erroneously increment after it is loaded with an address, resulting in a drive system that flat doesn't work. Every disk transfer is "off by one" in terms of where the data from the drive is transferred into or out of memory via single-cycle data break (DMA) cycles. The fix that David suggested is quite simple. It involves piggybacking on a 7474 TTL Dual D Edge-Triggered flip flop to the M7105 board of the RK8E, adding three patch wires, and cutting one trace. I modified the patch a little to make the wiring easier for me. My hands are kind of shaky, and it takes some real patience to do this kind of stuff. You will need to refer to the RK8E printset for your version of RK8E to identify where the chips are and how this patch fits into the logic. - First, you need to find a good TTL 7474 chip. Don't use LS or S, or other types, just a plain 7474. - Bend all of the leads EXCEPT pin 7 and pin 14 (GND and VCC) so that they are 90 degrees away (outward) from the package. - Piggy back the 7474 chip on top of the chip at E40. David's patch involved doing this on E41 rather than E40, but I find the wiring easier to do with the 7474 piggyback on E40. - Solder pins 7(GND) and 14(VCC) so they connect to the pins on the E40 package. This provides power to the 7474 chip. - Using appropriate wire, connect the D(pin 2) and CLR(pin 1) inputs of the 7474 to E41 pin 10. - Connect the CK(pin 3) input of the 7474 to E41 pin 9. - Cut the trace that connects E41 pin 10 to E28 pin 12 - Connect the Q output(pin 5) of the 7474 to E28 pin 12. Triple check all your work before trying it out in your system. That's it. With this patch in place, the TP3 pulse is latched by the 7474, which prevents it from going low (thereby generating the false clock signal) before the DLCA instruction is completed. My sincere thanks to all that wrote to me or posted here regarding my adventure in RK8E land, and special thanks to David Humphries for noticing my original posting sounding familiar, and writing to me about his adventure. This mailing list never ceases to amaze me with the talents that are out there. Best wishes to everyone, Rick Bensene

12 years, 4 months

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DECconnect

by BHuntsman＠mail2.cu-portland.edu

Hi! Does anyone have some DEC H8584-AC MMJ to RJ-45 adapters that they'd be willing to part with for a few bucks? Many thanks!! -Ben

12 years, 4 months

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FA: Xerox Model 820 8" Floppy Drive

by kurt.m.nowak＠gmail.com

Hi folks... I have for auction on Ebay, a dual 8" floppy drive for a Xerox Model 820 desktop. The auction number is 111291934342. I don't have means of testing this machine but it turns on and the drive motors spin. From what I understand, this drive will only work with the 820? I do not have the rest of the machine, sorry... Local pickups can also be arranged. Thanks! -Kurt

12 years, 4 months

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TI-99/4A acquisition

by terry＠webweavers.co.nz

I'm not sure how many on this list are interested in cheap home computers of the early 1980's but anyway...my crowded collection space is now even more challenged! Nice to have an example of this one though. Here is how I got it: http://www.classic-computers.org.nz/blog/2014-02-22-ti99_4a-reconstituting.… and here is how I've described it on the collections page: http://www.classic-computers.org.nz/collection/ti99-4a.htm Terry (Tez)

12 years, 4 months

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Choosing a Digilent JTAG Programming Cable

by robert.jarratt＠ntlworld.com

I need to buy a JTAG cable for programming a Spartan 3 and a Spartan 6 FPGA. I already have this one: http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,523 <http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,523&Prod=JTAG- USB> &Prod=JTAG-USB for the Spartan 3, but it does not fit the 2x7 connector on the Spartan 6 board. It looks like I need to buy either this one: http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,922 <http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,922&Prod=JTAG- HS1> &Prod=JTAG-HS1 or this one: http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,716 <http://www.digilentinc.com/Products/Detail.cfm?NavPath=2,395,716&Prod=XUP-U SB-JTAG> &Prod=XUP-USB-JTAG. I am not sure I understand the difference between them, what would I be getting extra if I bought the more expensive one? Thanks Rob

12 years, 4 months

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Attention DEC-heads

by evan＠snarc.net

Here's a fun announcement ... on the second day of VCF East (Saturday, April 5), VARx (www.varx.com) is giving 50% off all DEC items. As if you didn't already have enough of a reason to attend the show. :)

12 years, 4 months

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Bendix G-15

by evan＠snarc.net

MARCH now has a Bendix G-15, branded as a Control Data system (they bought Bendix toward the end of the G-15's production run in the early 1960s, although as I understand it the computer was essentially unchanged since its 1956 debut). We began setting up an exhibit in our museum last night. It includes the computer itself, tape drive, IBM teletypewriter, desk of the same period and style as the Bendix original, and (not yet on display) a matching Bendix desktop plotter. Get some tissues ready so you don't drool on your screens. :) http://www.snarc.net/bendix.jpg Come see it at VCF East!

12 years, 4 months

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PDP 8/e, RK8E Weirdness

by rickb＠bensene.com

I'm hoping that someone here has some experience with PDP 8/e with the RK8E disk controller for RK05 disk drives. The 8/e passes all of the CPU diagnostics with flying colors. Memory also checks out good. There are two fields of 4K core, and 4 fields of solid state memory. The core fields are field 0 & 1. Memory testing on both of the core memory fields shows no faults. The system runs very cleanly...I've got OS8 V3D on floppy and it can run for hours on end with no problems. I have a known good RK05 drive and a number of 16-sector packs for it that are good. RK8E and drive were tested in another 8/e system recently, and worked fine. Cable between RK8E and drive has been ohmed out, and it's good. Signals going across the cable look good and clean on the scope. The RK8E does not pass the Diskless Controller test in my system. This is the test that uses the maintenance mode features of the RK8E to test the controller without actually touching the RK05 drive (drive is powered on, but in LOAD (offline) state). It goes though most of the test, but fails in the data break tests. In these tests, the data break is only active for one cycle, where one word is transferred to/from the controller and main memory. All of the tests of the RK8E data buffer test out fine. So, it appears that something is amiss in the single-cycle data break handing...either in the RK8E, or the CPU's handing of data break requests. All data transfers between the RK8E and the PDP 8 are done via single cycle data break (DMA) operations. If I use RKLFMT to format a pack, it goes completely through the "write" portion of the formatting without a hitch, and gets through a lot of reads, but fails partway through the verification pass. The formatter writes the block number of each sector as the first two words of each sector, and fills the rest of the words with zeroes. The verification pass just checks these two words to make sure they match. If fails when the first word (high order disk address) changes from "0000" to "0001". Through all of the tests, there are NO CRC errors. Seeking cylinders and sectors work fine. It's just the "data" part of disk blocks that gets messed up. Using the FUTIL utility, I can successfully read and write blocks all over the disk. I can use the "SCAN" function of FUTIL to scan the entire disk, and it completes successfully. Thus, every sector on the disk can be "found" by the controller without problem. The problem symptom is that the first word of every block is duplicated across all of the blocks. All of the rest of the words in the blocks behave properly. Using FUTIL, I can read in a block, change any but the first word in the block, and write it out, then read it back, and it's fine. I can do this with words 1 through 255 of any of the blocks on the disk. However, if I read in a block, change the first word (word 0) of the block, and write it out, then read it back, the first word is as I set it to be -- but, if I read any other block, the first word is always the same as what I wrote out. For example, if I read in block 7, and change word 0 of the block to be "4567", then write it out, then read any other disk block, word zero will ALWAYS be "4567". If I then read in block 275, and modify word 0 to be "1234", and write it out, and then read back ANY (including block 7) disk block, the first word will always be "1234". I've tried this with all different bit patterns for in word zero, and it's always consistent. To verify that this isn't an issue with FUTIL, I wrote some little routines to read and write disk blocks, and the behavior is the same. The other disk test that uses the drive goes through all of the seek tests and writes out its test patterns, but fails on the read-back tests. I'm very stumped. The RK8E uses single-cycle data break (DMA) to take data to/from the disk and transfer it directly to/from main memory without processor intervention (other than initiating the conditions for the DMA cycle). The RK8E signals the processor that it needs to do a data transfer, the processor relinquishes control of the memory system, and lets the RK8E place address and data on the memory address bus and memory data bus to read/write the data from/to main memory. Each word of the transfer of a 256 word disk block is done as a separate DMA request. One might thing that there is a problem with the RK8E, but that is not likely, as this RK8E was recently tested in another system and worked fine, passing all of the diags. It's more likely that there is something amiss in the data break logic in the CPU, however, it seems odd that it would affect only the first word of a DMA transfer, as the CPU doesn't really know whether a DMA transfer is the first word or the last word. It just responds to DMA requests asserted by the peripheral. Does anyone out there have any ideas what I could do to track this down further? The RK8E is the only data break device I have in the system, everything else uses programmed data transfers, so I can't try with another data break device and see if the behavior is consistent. Thanks in advance for any ideas as to what to do/try next, Rick Bensene

12 years, 4 months

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PDP 8/e, RK8E Weirdness - Scope Traces

by rickb＠bensene.com

> Paul Anderson wrote: > It probably doesn't matter that much, but I meant take it to the bare > minimum- no EAE, no timeshare, 4K only, etc. Sorry it didn't help. No worries -- I appreciate the input! I did think that you meant stripping it down to the bare minimum, but having OS8 running makes loading the diags and testing much easier and faster -- and all that needs 8K, Mem Ext/Timeshare, and the RX8E. I don't want to remove the EAE..I just am scared of messing with the CPU stack. At least I was able to eliminate the high speed paper tape interface, the MOS RAM, and the second serial port, and get it all down to one Omnibus, which is a step in the right direction. I could strip it down to the bare, but then I'd be fussing with loading RIM, and then BIN, then pushing papertape images of the diags to the machine over serial -- it's just tedious and slow. I may give this a try later, but in light of the information below, I will probably try something else before I strip it bare. I just now put the machine back to the original configuration, and nothing changed -- the problematic behavior with the RK8E still exists. David Humphries had mentioned in a posting here that he had observed a transient on a signal related to loading the current address register in his RK8E that exhibited similar symptoms to mine. While I didn't know the specific signals that David was scoping, I guessed, from looking at the schematics, that perhaps he was monitoring the LOAD and CLK signals that drive the three 74161 counter ICs on the M7105 board that make up the Current Address Register. So, while putting the system back to its original configuration, I tacked in wire extensions to the LOAD and CLK pins of one of the 74161s to bring them out so I could scope them. Since the M7105 board is the middle board of the three-board RK8E sandwich, the only way to get access to the signals is use wire extensions. Once I got the system put back together, I toggled in a small program to repeatedly load the current address register in the RK8E with zero, e.g.,: 0200 7200 CLA CLL 0201 6744 DLCA 0202 5200 JMP 0200 I started this program running and watched the scope. There is a definite spike showing up on the CLK line. This spike could indeed cause the counter to increment after the initial address is loaded into the counter using the 6744 IOT (Load Current Address Register). The photo of the scope traces I observed is posted here: http://pail.bensene.com/RK8ESpike.jpg The top trace is the LOAD signal, and the bottom trace is the CLK signal. The negative-going spike on the CLK line is clearly obvious. The traces look quite similar to the scope image that David posted. I am hoping that David will read this and find his notes on what he did to fix the issue (installing a 7474 flip flop somewhere to eliminate the spike) and post it so I can make a similar modification and see if it fixes my problem. It isn't intuitively obvious to me where a flip flop/latch tacked into the logic would get rid of the spike. It's my hope that this is what is going on, and that David's fix will fix my RK8E/RK05 problems. Rick Bensene

12 years, 4 months

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Fwd: [rescue] RT-11 manuals, VAX manuals, AUI for pickup

by jim＠deitygraveyard.com

John has had problems getting on the list and so has asked me to forward this on. Please reply directly to him at john at jfloren.net . Jim ---------- Forwarded message ---------- From: John Floren <john at jfloren.net> Date: Tue, Feb 25, 2014 at 2:48 AM Subject: [rescue] RT-11 manuals, VAX manuals, AUI for pickup To: The Rescue List <rescue at sunhelp.org> I'm cleaning out the closets and I've found a bunch of stuff that I never look at, so anyone in the Bay Area can come get: * 4 big binders of RT-11 documentation (operation manual, utilities, programming, application files) * About a dozen Sony QD-600A tapes * A whole load of VAX, VMS, and PDP-11 books from DEC * A bunch of AUI-twisted pair boxes, one AUI-thinnet box, and some AUI cables. Please please PLEASE come take all of it at once! The whole load will fit in a single car trip. I'm in Livermore. john

12 years, 4 months

2
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Wanted: 5.25" 40t drive / 5.25" HD media

by jules.richardson99＠gmail.com

Morning all... I'm in need of a 5.25" 40-track double-sided floppy drive (i.e. the venerable "360K" in PC parlance), preferably one with direct drive to the spindle so I don't have to worry about worn drive belts. Bezel color, height etc. unimportant, I just want a 40t unit to hang permanently off my desktop PC, as hauling one out of my vintage machines every time I want to write to a disk from there gets old fast. I could also use ten or so *HD* 5.25" floppies so I can get my Compaq 286 and the pair of Compaq luggables at the local science museum up and running - I've exhausted all of the local sources that I can think of. I don't necessarily need new-in-box or anything, but of course error-free would be good :-) Anyone got anything they'd be willing to part with? (I'm in the northern US) [Also, I don't see many wanted ads on the list, although as far as I know they're not frowned upon - apologies if they are!] cheers, Jules

12 years, 4 months

2
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PDP-8 27-Bit Floating Point Package Listing/Source Needed

by bobvines00＠gmail.com

Does anyone have the documentation, particularly the listing (or source), for the DEC-08-NFPEA-A-PB (1972-05-26) 27-Bit Floating Point Package? Thanks, Bob

12 years, 4 months

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altair tapes

by ball.of.john＠gmail.com

>apears a vtr machean has come up with tapes on programes ur altair anyone >interested in it noticed it on my local buy and sell site >http://www.kijiji.ca/v-electronics/winnipeg/panasonic-vtr-nv-3020-with-15-r eels/539056526?enableSearchNavigationFlag=true For $40 I would totally digitize those tapes and upload them somewhere. Shoot, I would buy it so I have the recorder to go with my Panasonic camera. Unfortunately I'm about 3000km west of the listing.... -John

12 years, 4 months

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FYI: Battle of Bletchley Park: TNMOC chief calls for review of museums' Mexican standoff

by woyciesjes＠sbcglobal.net

Battle of Bletchley Park: TNMOC chief calls for review of museums' Mexican standoff - Iraq dossier MI6 chief's 'Disneyland' plans blasted http://www.theregister.co.uk/2014/02/24/national_museum_of_computing_calls_… -- --- Dave Woyciesjes --- ICQ# 905818 --- CompTIA A+ Certified IT Tech - http://certification.comptia.org/ --- HDI Certified Support Center Analyst - http://www.ThinkHDI.com/ Registered Linux user number 464583 "Computers have lots of memory but no imagination." "The problem with troubleshooting is that trouble shoots back." - from some guy on the internet.

12 years, 4 months

1
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windows 98

by elson＠pico-systems.com

On 02/12/2014 12:00 PM, cctalk-request at classiccmp.org wrote: >> On 2/11/2014 9:45 PM, Jim Stephens wrote: >>> I have a vmware image. I'll see if i can find an installer ISO >>> >>> I don't think VMware will run Win95 or Win98. If that is wrong, I'd sure like to know, as I could pack up an ancient system I still keep around for archival reasons. Jon

12 years, 4 months

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Help With RT-11 SET Commands for SD:

by jhfinedp3k＠compsys.to

I realize that no one else may be using the Symbolic Debugger (SD: - specifically SDHX.SYS) in RT-11, but there is an enhancement that should be helpful and I could use some advice. This question will probably receive opposite answers since this group is so diverse. BUT here goes: The questions is (as described below): "Should all 6 possible SET commands be available or is that too confusing to the user and only the first 4 SET commands should be available?" In RT-11, a user program can issue an EMT request so that RT-11 allows the user program to handle TRAPs to locations 4 and 10 so that special expected error conditions can be handled correctly. However, in the RT-11 Symbolic Debugger, these TRAPs are again over-ridden unless the user again forces them back to the user program with the commands: _T4;V let the user program handle TRAPs to 4 _T10;V let the user program handle TRAPs to 10 For turning off either selection (if either was selected), the command is: ;V turns off both TRAPs to 4 and 10 Unfortunately, the DEC version Y01.16 of SD: always required the user to first activate the Symbolic Debugger in order to execute one or both of those commands. However, by adding two additional SET commands to the SD: code, the user can use these SET commands (even in a command file to automatically initialize everything) before the SD: code is even LOADED and activated, as for example: SET SD: T4 - equivalent to _T4;V SET SD: T10 - equivalent to _T10;V Turning off the selections uses the commands (the commands are only almost equivalent to ;V): SET SD: NO T4 - ONLY turns off _T4;V SET SD: NO T10 - ONLY turns off _T10;V Of course, it is also possible to have two more SET commands which: SET SD: TRAPS - equivalent to both _T4;V and _T10;V SET SD: NO TRAPS - equivalent to ;V The questions is: "Should all 6 possible SET commands be available or is that too confusing to the user and only the first 4 SET commands should be available?" By the way, although it is not very useful to re-implement the current SET commands so that the change is applied after the LOAD SD: command has been executed, it is possible to add code to the "SET SD: T4" option which changes both the SY:SDX.SYS file and any copy which is in memory. This allows the user to execute "SHOW CONFIGURATION" without having to first "SET SD: BREAK". In addition, the "SET SD: T4" command can then be done either before or after the "LOAD SD:" command. Another other comments or suggestions would also be helpful. Jerome Fine

12 years, 4 months

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Anyone Have a Copy of the LAB-8/E 8K BASIC Binary?

by bobvines00＠gmail.com

> Message: 15 > Date: Sun, 23 Feb 2014 12:07:38 -0000 > From: "David Humphries" <david at hheng.plus.com> > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > Subject: Re: Anyone Have a Copy of the LAB-8/E 8K BASIC Binary? > [snip] >>>> I have DEC-8E-ABASA-A LAB-8E BASIC R/T binary on punched tape, >>>> any help ? >>>> >>> I wasn't able to find any conclusive information on that tape. Do you >>> know >>> if this is BASIC/RT that the 8/E/M handbook 1973 referred to for the >>> LAB-8/E >>> (pg 2-36)? Anyone seen documentation for it? I would be interested in >> >> It seems likley as I have some of the other packages mensioned in that >> section in the same tray. Dave, Does this mean you have other tapes in the tray? If so, could you image them too? [snip] >> I will do a bit more investigating before a post the file, including >> looking to see if I can find any documentation " in the store" > > > Found the problem , it loads into field 1 with the bin loader also in 1. Now > loads and auto starts, I think its in fact a multi part as it starts > before the end of the file and as im loading from my terminal emulator we > loos the last bit, its maybe an optional overlay, the file maybee needs > split. > I found the user manual , thats how I found out about the loading. > Link to the bin and a pdf of the user manaul here > > https://www.dropbox.com/sh/dmi0r7s0v5jsp0c/-14bOM0wD4 > > I guess its not in Bitsavers, could someone let Al know ? , unless hes > allready seen this that is . > > Dave H I can OCR and email it to Al to save him time. Do you have any other of these documents that can be scanned? David G. may want to put all of your images/PDFs on his site too. Thanks, Bob

12 years, 4 months

2
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Televideo 955 terminal options

by shadoooo＠gmail.com

Hello, I have some questions about Televideo 955 terminal. The manual lists a serie of options, among others the ability of emulate tek 40xx graphic terminals. I'm interested in this feature, but it's not clear to me if a particular version of the terminal, or a particular board is needed. Furthermore, the manual pictures two different motherboards, normal and extended, but what it's the difference? Finally, there's a way to identify the hardware / software options of the terminal with some key combination, our some special command? Thanks Andrea

12 years, 4 months

4
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Needed: OS65D boot disk for OSI C24P

by philip＠neoncluster.com

Firstly, if you've seen my message about this on VCForums, then I apologise for the redundancy. I've spent the best part of 4 years getting my Ohio Scientific C24P working. The biggest problem being the MPI drive unit of which I've replaced and fixed many parts. I think I now have everything working, but don't have any bootable media to test it with. I was wondering if there was anyone here who would be willing to make me some copies of OS65D on 5.25" media? Much thanks. Phil

12 years, 4 months

1
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IBM Model M's!

by maxxtw＠gmail.com

Hi everyone! Thought I'd share my site with you. I restore/recondition M's despite their condition. It's a labor of love for these fantastic mechanical keyboards. The site is at http://www.phosphorglow.net/ If you are in need of a lovingly reconditioned M or need yours restored, please mosey over to my corner of the interwebs. I also have a small army of classic computers in my personal collection that will be making their appearance when I get the time to play with them. Kind regards, -Maxx (I hope this doesn't double post - I accidentally sent it from my address that isn't subscribed to the list. Sorry in advance if that happens!)

12 years, 4 months

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SCSI bits on eBay

by lproven＠gmail.com

Toshiba XM-4101BME internal SCSI 2X CD-ROM drive http://www.ebay.co.uk/itm/271409731209 Digital Equipment Corporation (DEC) Storage Expansion Unit RZ5X-F3 with RZ56 HD http://www.ebay.co.uk/itm/271411499867 Quantum Fireball ST64S narrow SCSI 3.5" 6.4GB hard drive http://www.ebay.co.uk/itm/271412312175 There's a wireless Apple keyboard - the original, pleasant to use version - and mouse and a PC joystick and other things too, but I thought the above might be of interest to CCmpers. The DEC SEU has a 5.25" FH 660MB SCSI drive in it. -- 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

12 years, 4 months

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TU58 emulator

by serwis＠tech-serwis24.pl

Dear Sirs, We have a CNC controlled DEC (motherboard M 8189 picture -0). Please submit an offer for the replacement of the emulator with DECtape-II (Fig. 1.2, 3) for loading the data from the memory card, USB stick, or propose another solution which allows us to make technical backup data cartridges (DECtape-II photo 1). If you need more information or photos please write. We appreciate the timely development of our inquiry. Witam, Posiadamy Frezark? CNC ze sterowaniem DEC ( p?yta g??wna M 8189 zdj?cie -0 ). Prosimy o przedstawienie oferty na zamiennik emulatora z DECtape-II (zdj?cie 1,2, 3) do wczytuj?cy dane z karty pami?ci, usb stick lub zaproponowanie innego rozwi?zanie technicznego umo?liwiaj?cego nam zrobienie kopii kaset z danymi (DECtape-II zdj?cie 1). Je?li potrzebuj? Pa?stwo wi?cej danych lub zdj?? prosimy napisa?. Prosimy o pomoc ? w rozwi?zaniu naszego problemu -- Pozdrawiam, Piotr Karmazyn tel.: 58 3041450 fax: 58 6831803 KOM : 660432720 TECH-SERWIS Mechanika Maszyn i Pojazd?w Mariusz Wodzy?ski ul. Rzemie?lnicza 9 83-000 Pruszcz Gda?ski NIP: 584-09-52-627 REGON 002849343

12 years, 4 months

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Quality of early 70s Wabash 1/2" tape

by cclist＠sydex.com

List: I've got a 2400' reel of 9-track tape here from 1971--so far, no issues. But the brand is "Wabash"--I'm well acquainted with the execrable quality of the brand when it comes to floppies, but have no experience with pre-floppy-era tapes. I'll bake the thing (130F for a day or so) before reading it, but does anyone have any experience with this brand and age? I'd used mostly 3M, CDC and IBM branded tape back in the day. --Chuck

12 years, 4 months

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Serial Adapter

by thomas.w.cranston＠gmail.com

Looking for mini serial female by serial male adapter, could use mini serial female by serial female. Tom

12 years, 4 months

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TI-99/4A acquisition

by seefriek＠gmail.com

From: Chuck Guzis <cclist at sydex.com> > >I've long thought that the strangling of the bus done on the TI 99/4 >home PC was quite possibly motivated by TI's not wanting to compete with >its own 990 series of computers. The cost of a TI 990/4 was >considerably higher than a 99/4, even though both use the same MPU. > I have heard & read this enough times to think there's something to it. Wouldn't be the first time this sort of thing has been done. >I find the I2L versions of the 9900 far more interesting as far as chips >go. They were used quite often in military gear, not as devices offered >to the general unwashed. In a similar way, one did not see the >Fairchild 9940 in much general audience gear. Yes. You can debate how good a general purpose processor the 9900 is, but it was proven to be a very good embedded controller. The memory mapped registers and workspace swapping made real time context switching a breeze compared to more conventional designs. From: John Many Jars <john at yoyodyne-propulsion.net> >Basically, my dad bought the wrong thing. It cost about 1/2 what an >Apple //+ would have cost, and was about 1/8 as useful. Ha! That is *exactly* how I ended up with my own 99/4. KJ

12 years, 4 months

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Looking for "Super-5" disk driver schematics

by alexandre.tabajara＠gmail.com

Dear sirs, I'm looking for the schematics of the F-051MD chinon drive. This is the auto-eject "Super 5" slim drive for apple computers. Any helpers? Thanks Alexandre

12 years, 4 months

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Signetic WOM

by wdonzelli＠gmail.com

Many of us know about the classic prank Signetic played back in the 1970s, with the WOM (write only memory) - but today I found out that the chips actually exist. The son of an acquaintance uploaded some pictures (on a different list) of the original sales kit Signetics mailed out, and included is an actual IC, I think a 24 pin DIP, marked S7324 2512D NFG. Interesting other stuff, too - including a fortune cookie (I think), bumper sticker, and funny nose & glasses. -- Will

12 years, 4 months

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TI-99/4A acquisition

by dm561＠torfree.net

----- Original Message ----- Message: 6 Date: Sun, 23 Feb 2014 14:05:46 +1300 From: Terry Stewart <terry at webweavers.co.nz> Subject: Re: TI-99/4A acquisition > ...I definitely need some more carts though. ...and a wider desk...

12 years, 4 months

1
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TRS-80 Mod 4 membrane keyboard

by snhirsch＠gmail.com

Any suggestions on repairing a dead spacebar key? All the online discussion I find pertains to an earlier model with individual keyswitches soldered into a PCB backplane. This keyboard is held together with melted over plastic posts and is obviously using a printed membrane. Before I launch in blindly I'd love to hear from anyone who's been through the process. Steve --

12 years, 4 months

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Chameleon terminal

by shadoooo＠gmail.com

Hello, I found a serial terminal named Chameleon... Anyone have an idea of what kind of terminal is this? Andrea

12 years, 4 months

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Anyone Have a Copy of the LAB-8/E 8K BASIC Binary?

by bobvines00＠gmail.com

Does anyone have the binary for the LAB-8/E version of 8K BASIC? Of course, the original source code would be better if that's available too. Thanks, Bob

12 years, 4 months

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SCSI2SD

by aek＠bitsavers.org

Just saw this on Erik's web site, and hadn't seen it mentioned here http://www.codesrc.com/mediawiki/index.php?title=SCSI2SD Currently getting around 900kb/sec R/W

12 years, 4 months

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VCF East exhibit reg. deadline

by evan＠snarc.net

Cctalkers, March 1 is the deadline to register VCF East exhibits. Anyone attempting to register after that will have to grovel to me and explain why "But I was busy!" applies to them and not to the 32 other people who found time... Full details about the show, agenda, schedule, etc. are at http://www.vintage.org/2014/east and you'll also find updates at http://www.facebook.com/vcfeast. Remember -- this is the first THREE-DAY show and anyone who goes Friday can win an oscilloscope.

12 years, 4 months

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Another mystery PDP-8 board

by charlesmorris800＠centurytel.net

Another mystery board in my junk box... this one should definitely be for a PDP-8 because it has no signals on the F connector fingers. I've googled all the numbers on it and can't figure out what it's for. It has a Z80 CPU, some RAM and ROM, and a lot of bus drivers. There's an empty 40-pin socket at U1, don't know if it had another Z80 or what. http://s1181.photobucket.com/user/DrCharlesMorris/media/PDP-8/P02-21-14_205… The output(?) connectors are unique at least to me: http://s1181.photobucket.com/user/DrCharlesMorris/media/PDP-8/P02-21-14_205… Looks like four pin plugs would seat in those sockets (they aren't coaxial). Any clues? thanks Charles

12 years, 4 months

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Found Convex 2000 Series Test Station SW Exemplar SPP-UX 5.2 tape

by cruff＠ruffspot.net

On Thu, 20 Feb 2014 Jonathan Katz wrote: > YES. This may be important stuff. This may be console software for a > CS6400! Like the E10K they used an SSP aka OWS to run them, and > connected via standard HIPPI(?) to the control boards. Sorry to disappoint you, but these will be for some model of Cray, either a later Y-MP, EL or T3 system, as we never had any Sun servers of that style at NCAR. I'll be working on extracting the tape contents into a file system this weekend to better determine what they contain.

12 years, 4 months

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Anyone Have a Copy of the LAB-8/E 8K BASIC Binary?

by bobvines00＠gmail.com

> Date: Thu, 20 Feb 2014 19:17:50 -0000 > From: "David Humphries" <david at hheng.plus.com> > To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> > Subject: Re: Anyone Have a Copy of the LAB-8/E 8K BASIC Binary? > > I have DEC-8E-ABASA-A LAB-8E BASIC R/T > binary on punched tape, any help ? > > DaveH > Yes, I think so! Is it available in an "emailable" form? If not, perhaps someone with a running system can create an image and put it online. Thanks, Bob > ----- Original Message ----- > From: "Bob Vines" <bobvines00 at gmail.com> > To: "cctech" <cctech at classiccmp.org> > Sent: Wednesday, February 19, 2014 8:04 PM > Subject: Anyone Have a Copy of the LAB-8/E 8K BASIC Binary? > > >> Does anyone have the binary for the LAB-8/E version of 8K BASIC? Of >> course, the original source code would be better if that's available >> too. >> >> >> Thanks, >> >> Bob

12 years, 4 months

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Margot Comstock, co-founder and editor of Softalk magazine, to deliver keynote speech at KansasFest 2014

by pneubauer＠bluerwhite.org

FEBRUARY 21, 2014 --- KansasFest 2014, the Apple II convention, is scheduled for July 22 --27 in Kansas City, Missouri.Margot Comstock, co-founder and editor of the much-loved /Softalk /magazine, will join us with a keynote presentation. Comstock and Al Tommervik founded /Softalk /in 1980 to share the hardware, software, and people behind the Apple II.At its peak, /Softalk/ had 250,000 readers and uniquely offered broad and deep coverage of everything Apple II related, including programming, game playing, business use, and home use.Later, Softalk Publishing produced magazines for the emerging Macintosh and IBM markets,/ST.Mac/ and /Softalk for the IBM Personal Computer/./Softline/, a game magazine begun by Ken William's OnLine Systems and later renamed to /ST.Game/, was Softalk Publishing's second longest-lived magazine.Softalk Books published several books by the magazine's columnists and a Mac book by Doug Clapp. The Apple II magazine ran for four years before industry changes and expenses led management to cease publication.In that time, /Softalk/ earned many loyal fans, and a group of volunteers is working to archive and share issues.The Smithsonian Institution recognizes Comstock and Tommervik as pioneers of the microcomputer revolution and /Softalk/ as a chronicle of that revolution. KansasFest is an annual convention offering Apple II users and retrocomputing enthusiasts the opportunity to engage in beginner and technical sessions, programming contests, exhibition halls, and camaraderie. KansasFest was originally hosted by Resource Central and has been brought to you by the KFest committee since 1995. Any and all Apple II users, fans, and friends are invited to attend this year's event. Registration details will be announced on the KansasFest Web site in early 2014. For photos, videos, and presentations from past KansasFests, please visit the event's official Web site at http://www.kansasfest.org/. CONTACT: KansasFest 2014 http://www.kansasfest.org/ http://twitter.com/kansasfest/

12 years, 4 months

1
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ADDS Viewpoint 3A Plus terminal

by swtpc6800＠comcast.net

I have a ADDS Viewpoint 3A Plus terminal that is in working condition. It looks very clean, powered up and operated in the local mode. I just took it out of the box and haven't tested the RS-232 serial link yet. It includes the operator's manual and service manual. (I will put the manuals on bitsavers.) I reducing my collection and am looking for a new home for this terminal. I am located in the Seattle area and am not interested in shipping it. (30 plus pounds.) Michael Holley

12 years, 4 months

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test

by johnhreinhardt＠yahoo.com

Testing to see if I still bounce.

12 years, 4 months

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Found two possible Cray OWS backup tapes

by cruff＠ruffspot.net

Among some old DAT tapes I am looking at, I have what appears to be some ufsdump format backup tapes from two Cray Operator Workstation (OWS) servers of year 2000 vintage, possibly from two Y-MP EL systems? These OWS servers ran Solaris. The tape for ows9607 contains 524MB of backups of the following file systems: /, /usr, /var, /opt, /opt/CYRIdump and /usr/openwin. The second tape contains 828MB of backup of ows9630 and may not contain the contents of /opt/CYRIdump. Does anyone know of a copy of ufsrestore that runs on Linux? If not, I'll have to see if the netbsd restore under stands it or grab the OpenIndiana (OpenSolaris fork) distribution. Anyone interested in the contents of these tapes?

12 years, 4 months

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Any more folk need SCSI CD-ROMs?

by lproven＠gmail.com

To my great surprise and considerable pleasure, I've just sold an NEC Multispin 3X CD for ?8.50 on eBay. I was less delighted to find a similar unit that I'd misplaced in the garage. So, if anyone wanted one and missed out... Toshiba LI-3300 external SCSI CD-ROM drive in original case (item # 271406165551) http://www.ebay.co.uk/itm/271406165551 -- 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

12 years, 4 months

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To A/UX or not to A/UX, that is the question

by Carl.Claunch＠gartner.com

Easy to build up any size system by mounting multiple 2GB partitions across various points in the file system - the partition size shouldn't be a constraint on running A/UX ________________________________ This e-mail message, including any attachments, is for the sole use of the person to whom it has been sent, and may contain information that is confidential or legally protected. If you are not the intended recipient or have received this message in error, you are not authorized to copy, distribute, or otherwise use this message or its attachments. Please notify the sender immediately by return e-mail and permanently delete this message and any attachments. Gartner makes no warranty that this e-mail is error or virus free.

12 years, 4 months

1
0
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lecture on history of philips in computers (in dutch)

by bthomas＠brothom.nl

http://www.museumboerhaave.nl/actueel/agenda/434-salon-boerhaave-met-dr-ger… 26th of februari

12 years, 4 months

2
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IBM Hursley's in-house museum in pictures

by lproven＠gmail.com

Taken by some clueless noob, though, as many of the pics only show the screen and keyboard and not the actual computer at all. This is one of those pillocks who thinks that the computer is the "disk drive", I suspect. http://www.zdnet.com/photos-from-the-first-pcs-to-the-thinkpad-classic-ibm-… -- 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

12 years, 4 months

1
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Using Virtual Box

by seefriek＠gmail.com

From: Chuck Guzis <cclist at sydex.com> >On 02/18/2014 03:46 PM, Jonathan Katz wrote: > >> Someone once told me "never underestimate the bandwidth contained >> within a station wagon crammed full of DLT tapes." > >That oft-repeated chestnut is attributed to Andy Tannenbaum and >pre-dates DLT, I think. In 1985 (when I first heard it), the station wagon was full of 9-tracks. Each generation adapts the wisdom, I suppose. KJ

12 years, 4 months

2
1
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ST412 drive or controller fault?

by jules.richardson99＠gmail.com

Just curious as to what the expert opinion is on this - I've got a ST412-type drive here (it's a Miniscribe with 615/4/17 ~20MB geometry) which refuses to read from cylinders 128-255 or cylinders 384-511 - giving address mark not found errors - although cylinders outside those two ranges are fine. The way the faults lie exactly within a couple of specific bit patterns (01xxxxxxx and 11xxxxxxx) for the cylinder number makes it seem more like a controller problem to me - but I don't know how much logic there is on a ST412-type drive, what with the buffered seek ability. Controller passes internal/RAM diagnostics OK (but how exhaustive those are, I don't know). Issuing a drive recalibration and/or controller reset prior to attempting access to the problem areas makes no difference. Maybe the drive was simply never formatted on those cylinder groups for some reason - but that seems rather unlikely (and the filesystem on the drive is definitely unwell, suggesting that it's trying to access data that's no longer there, although I've not gone to the extent of picking the FAT apart to verify this) I think all the errors I've seen before on these kinds of drives have been totally dead, seemingly random, or confined to all/parts of a surface - not in cylinders. cheers Jules

12 years, 4 months

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