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

by healyzh＠aracnet.com

> ! Sounds like I need to either find a smaller PowerSupply, or > ! else I'm going to have to have it external to the system > ! (which I don't want). > > What about taking the power supply out of the metal case? (Re)build a power > supply to fit? Also, I have seen some pretty small ATX power supplies. about > 1/2 to 2/3 the size of an AT PSU... If I don't find a smaller PS tomorrow, that's probably what I'll do. The thing is I'd kind of like to keep the one I have intact to use for something else. On a positive note, yesterday I tracked the system freezes down to 'kdm' (the KDE version of xdm) and then discovered there was also a daily cronjob set to run at 12:15am that would also lock up the system. So I've corrected those problems (removed them actually since I don't have any use for either) and now have the board running happily with only a HD and Monitor plugged in (and I don't see any problem disconnecting the monitor, if nothing else I've got a plug I can stick in to make it think it still has one). So, I'm down to needing to get a VT100 out of storage tomorrow if I can find the time. Zane

24 years, 9 months

1
0
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CBM8032 - wobbly screen

by pete＠dunnington.u-net.com

On Sep 28, 18:26, Tony Duell wrote: > Now, the 8032 uses a 6845 CRT controller chip IIRC. It sets the sync > frequencies. Maybe it's configured differently on UK and US machines. > Maybe, therefore, one of the ROMs is different between UK and US machines > (I don't recall any setup links on the CPU board to configure this, as > some other manufacturers used). Does anybody know if UK PETs have 50Hz > vertical display systems? If they do, then you might need a dump of the > appropriate ROMs. It does use a 6845, and it does still run at 60Hz. At least, the ones I've worked on are 60Hz and I think the 4000 series did too; I don't know if that changed in any later models. -- Pete Peter Turnbull Network Manager University of York

24 years, 9 months

1
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Calc wars

by mcguire＠neurotica.com

On September 27, Mike Ford wrote: > > Man, you're hangin' out in the wrong places. I haven't laid eyes on > >a Windoze box in months. > > REALLY? I saw about 1000 in a scrap yard today on pallets waiting to be > recycled, lovely site. ;) Ahh, fit for a painting on a wall. :-) -Dave -- Dave McGuire Laurel, MD

24 years, 9 months

2
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ZX81 kits (was Re: Keep or assemble???)

by acme_ent＠bellsouth.net

Tony Duell wrote: > Yes, but hang on a second. If I don't keep the BASIC (I'd prefer Forth, > and yes I know there was a forth ROM for the ZX81), I modify the display > (so I don't really use the ULA) The ULA does a lot more than handle the display ;>) > I replace the keyboard, and upgrade the > internal RAM, then all I am really using is the Z80. And those are not > hard to find :-).. Okay, you are absolutely correct given the FORTH. I use calls to the BASIC ROM routines from assembly and machine code, so I'm using more than just the Z80 MPU. > In other words, if I'm going to do that level of hacking, I might as well > start from scratch. Not that there's anything wrong in doing that, of course. Of course not ;>) But a ZX81 kit is still faster than starting from scratch. > If I start > with a pre-built unit I have to work around the existing parts. > Or desolder them (which is not impossible, generally). Try desoldering the RF modulator from a ZX81 board ;>) Glen 0/0

24 years, 9 months

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2
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Framebuffers

by vance＠ikickass.org

Hi. Does anyone have a comparison of the performance of the various DEC turbochannel framebuffers? Even a listing of the faster ones would help. Peace... Sridhar

24 years, 9 months

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DSSI Cables

by dittman＠dittman.net

> > Yes, but if the connectors on both ends are the same I would be > > able to use a SCSI cable to go from the 4000 to the HSD05. > Yes. But SCSI cables are often twisted pair (pins 1+25, 2+26, 3+27, > ...) so depending on the DSSI pinout it may be possible that different > DSSI signals go on the same twisted pair. This can lead to > interference if the cables are long. That is true. -- Eric Dittman dittman(a)dittman.net Check out the DEC Ethusiasts Club at http://www.dittman.net/

24 years, 9 months

1
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KXJ11-CA / M7616 doc wanted.

by jkunz＠unixag-kl.fh-kl.de

Hi. I have this nice KXJ11-CA but I have no clue how to use it. I was able to get to the ODT prompt, but nothing else. I need pinouts, jumper descriptions, memory map (where are the EPROMs?), ... How to use that digital IO port? ... My idea is to use it in a my MicroVAX 4000-200 with the VAX as "frontend processor". So I would be able to run NetBSD/vax and perhaps 2.9BSD in the same box. -- tsch??, Jochen Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/

24 years, 9 months

1
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DSSI Cables

by dittman＠dittman.net

> > I checked again. The connectors on the VAX 4000/500 are identical to > > SCSI connectors. > But the wiring to the ribbon cable is different. DSSI uses a 1:1 > mapping of pin numbers. The HD50 connector for SCSI is wired this way > to the ribbon cable: > HD50 ribbon > 1 1 > 2 25 > 3 3 > 4 26 > 5 5 > 6 27 > ... ... Yes, but if the connectors on both ends are the same I would be able to use a SCSI cable to go from the 4000 to the HSD05. -- Eric Dittman dittman(a)dittman.net Check out the DEC Ethusiasts Club at http://www.dittman.net/

24 years, 9 months

2
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Central FL Computer Junk Fest

by DAW＠yalepress3.unipress.yale.edu

Hmmm, is there going to be one up here around Connecticut sometime? --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818 ! -----Original Message----- ! From: Glen Goodwin [mailto:acme_ent@bellsouth.net] ! Sent: Friday, September 28, 2001 12:57 AM ! To: classiccmp(a)classiccmp.org ! Subject: Re: Central FL Computer Junk Fest ! ! ! Gene: ! ! The Central Florida Computer Junk Fest is being held Sunday Sept. 30 ! starting at 9 AM. The location is: ! ! ACME Discount Computers ! 5511 W. Colonial Drive ! Orlando FL 32808 ! (407) 296-2333 ! ! Whatever you bring must be at least ten years old, and please do *not* ! bring a mountain of 286s . . . ! ! We're near the NE corner of Kirkman and Colonial behind the Wendy's. ! E-mail me off-list if you want more specific directions. ! ! See ya there! ! ! Glen ! 0/0 ! ! ---------- ! > From: Gene Ehrich <gehrich(a)tampabay.rr.com> ! > To: classiccmp(a)classiccmp.org ! > Subject: Re: Central FL Computer Junk Fest ! > Date: Thursday, September 27, 2001 10:51 PM ! > ! > At 09:35 PM 9/27/01 -0400, you wrote: ! > >From: Louis Schulman <louiss(a)gate.net> ! > > > Hope to see everyone there! ! > > ! > >I'm looking forward to meeting everyone there too. ! Please send some ! email ! > >off list and let me know what you're bringing and want. ! > > ! > >;) ! > >- Mike: dogas(a)bellsouth.net ! > ! > I must have missed the original messages on this. ! > ! > Where is it and when and what can I expect to find there? ! > ! > ! > ! > !

24 years, 9 months

1
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Odd VT100 question

by DAW＠yalepress3.unipress.yale.edu

This is quite a neat idea... ! > The PSU occupies the space at the back of the terminal, but ! > only extends halfway forward, so there is space underneath ! > the flare of the tube of 10"W x 4.75"H x 5"D. Of course ! > you'd not want to disrupt the picture. (Memo to self: must ! > sort out vertical linearity on mine!) ! > ! > At the back right hand side (again, as you look at the picture), ! > underneath the high tension wire to the tube, there is a space 4"W x ! > 3.5"H x 5"D. ! ! Sounds like I need to either find a smaller PowerSupply, or ! else I'm going to have to have it external to the system ! (which I don't want). What about taking the power supply out of the metal case? (Re)build a power supply to fit? Also, I have seen some pretty small ATX power supplies. about 1/2 to 2/3 the size of an AT PSU... --- David A Woyciesjes --- C & IS Support Specialist --- Yale University Press --- mailto:david.woyciesjes@yale.edu --- (203) 432-0953 --- ICQ # - 905818

24 years, 9 months

1
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Calc wars

by dhquebbeman＠theestopinalgroup.com

> I quit using most of my other calculators and, today, use an HP 25C almost > exclusively, though I have a '21 also. I didn't know those were collectibles. > back in the '70's, I modified the battery holder so I could replace the > batteries when they went bad. This was a common problem. The use of 1.5-volt > batteries probably won't hurt anything if my own calculators are any indication, > though I've usually replaced the NiCd types with others of the same sort. Way back in '77 (I think), I got a mailing from TI advertising and offerring for sale the TI Programmer, which was a simple 4-function calculator in that standard black-plastic format they used to use, replete with the also-standard LEDs. However, it wasn't actually a four-function calculator, because it included radix conversion and several standard logical operators. At home, when I need radix conversion, instead of the Casio Fx-115m or the Calc accessory, I still reach for the TI Programmer... -dq

24 years, 9 months

5
4
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CBM8032 - wobbly screen

by Martin.Kaeser＠auge.de

Adrian, a CBM8032 rock-steady with 60 Hz power supply (US) may wobble on a 50 Hz line (UK). Martin > Date: Fri, 28 Sep 2001 01:32:01 +0100 > From: Adrian Vickers <avickers(a)solutionengineers.com> > Could a flakey transformer be making the screen wobble? How do transformers > go flakey anyway, if indeed they *can* co flakey? Or is the US chap telling > porkies?

24 years, 9 months

1
0
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DSSI Cables

by dittman＠dittman.net

> Okay, my two HSD05 controllers arrived. I never paid attention to > the DSSI connector before, so I thought it was the same as a SCSI > connector, but it isn't. Does anyone know of a source for cheap > DSSI cables? I checked again. The connectors on the VAX 4000/500 are identical to SCSI connectors. The connector on the Tri-Link connector (part number 12-39921-01) are different, though. -- Eric Dittman dittman(a)dittman.net Check out the DEC Ethusiasts Club at http://www.dittman.net/

24 years, 9 months

2
1
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Central FL Computer Junk Fest

by acme_ent＠bellsouth.net

Gene: The Central Florida Computer Junk Fest is being held Sunday Sept. 30 starting at 9 AM. The location is: ACME Discount Computers 5511 W. Colonial Drive Orlando FL 32808 (407) 296-2333 Whatever you bring must be at least ten years old, and please do *not* bring a mountain of 286s . . . We're near the NE corner of Kirkman and Colonial behind the Wendy's. E-mail me off-list if you want more specific directions. See ya there! Glen 0/0 ---------- > From: Gene Ehrich <gehrich(a)tampabay.rr.com> > To: classiccmp(a)classiccmp.org > Subject: Re: Central FL Computer Junk Fest > Date: Thursday, September 27, 2001 10:51 PM > > At 09:35 PM 9/27/01 -0400, you wrote: > >From: Louis Schulman <louiss(a)gate.net> > > > Hope to see everyone there! > > > >I'm looking forward to meeting everyone there too. Please send some email > >off list and let me know what you're bringing and want. > > > >;) > >- Mike: dogas(a)bellsouth.net > > I must have missed the original messages on this. > > Where is it and when and what can I expect to find there? > > > >

24 years, 9 months

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TI 99 available in Broomfield, CO

by vaxman＠qwest.net

There is an ad in this weeks Broomfield Enterprise paper for a TI99 available free, but I didn't bring the ad home. Contact me if interested (offlist). clint

24 years, 9 months

1
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Calc wars

by mcguire＠neurotica.com

On September 27, Richard Erlacher wrote: > I'm still partial to having some of those functions, too, but with a computer > running Windows nearly everywhere I turn, the calculator that's built-in there Man, you're hangin' out in the wrong places. I haven't laid eyes on a Windoze box in months. -Dave -- Dave McGuire Laurel, MD

24 years, 9 months

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FT: DEC rack cover panels

by mrbill＠mrbill.net

A couple of weeks ago, I mentioned that I was looking for some of the black/off-white 10"x19" front "cover panels" that go on a rack of DEC equipment (black "crinkly" with a white border). I've now got a box of at least 7 of them, with more on the way. Anybody need one or two? I'd like to trade for something else interesting, but not necessarily computer-related. Old civil defense stuff (geiger counter, etc), phone stuff (old switch docs, Bell System stuff, things like that), etc. Alternately, looking for good-brand 10baseT hubs or switches. Anyway, if you can use one or two or more of these, let me know. I'm only going to keep one or two for myself, so the rest are available. Bill -- Bill Bradford mrbill(a)mrbill.net Austin, TX

24 years, 9 months

1
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DSSI Cables

by dittman＠dittman.net

Okay, my two HSD05 controllers arrived. I never paid attention to the DSSI connector before, so I thought it was the same as a SCSI connector, but it isn't. Does anyone know of a source for cheap DSSI cables? -- Eric Dittman dittman(a)dittman.net Check out the DEC Ethusiasts Club at http://www.dittman.net/

24 years, 9 months

2
1
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Odd VT100 question

by healyzh＠aracnet.com

Paul Williams wrote: > "Zane H. Healy" wrote: > > > > OK, I'm thinking of doing a wierd mod on a VT100, just how much room > > is inside one of them? I need room for a 7 1/2" x 9" x 2 1/2" board > > (the 2 1/2" is thanks to the heatsink and RAM), and would also like > > to be able to fit in a smallish 250W PS (3 1/2" x 5 1/2" x 6"), and > > a 3 1/2" HD. > > I've put two photos of a topless VT100 in http://vt100.net/zane/ which > might give you some idea of the shape of space available. Thanks, between them and the description you've given I've got a lot better idea. > On the left hand side of the photos you see the card cage. The space > there is 10.5"H x 10.5"D x 3.25"W (but only 2" unobstructed to the > back). You might be able to make that 2.25"W to the back with a bit of > persuasion. This isn't a huge problem as the 2.5" dimension I give is for the heatsink and fan on the motherboard. It looks like I should be able to fit the motherboard in this cavity, I rather thought I could since a VT103 used this to squeeze in a PDP-11. > The PSU occupies the space at the back of the terminal, but only extends > halfway forward, so there is space underneath the flare of the tube of > 10"W x 4.75"H x 5"D. Of course you'd not want to disrupt the picture. > (Memo to self: must sort out vertical linearity on mine!) > > At the back right hand side (again, as you look at the picture), > underneath the high tension wire to the tube, there is a space 4"W x > 3.5"H x 5"D. Sounds like I need to either find a smaller PowerSupply, or else I'm going to have to have it external to the system (which I don't want). Unfortunatly I seem to have run across another stumbling block besides the size of the powersupply. It seems that the system is pretty much rock solid if it has the keyboard, mouse, AND CD-ROM plugged in, however if I unplug either the CD-ROM or the USB Keyboard and Mouse the system will lock up after it's been up for between half an hour and two hours. I've been unable to find any logs or reason for it locking up. I'm using SUSE Linux 7.2 Professional for this setup. In any case, hopefully I'll be able to dig one of my VT100's out of storage on Saturday. Zane

24 years, 9 months

1
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Calc wars

by Robert.Stokes＠vu.edu.au

I've still got a working HP25 that I keep going by fitting new AA NiCds into the HP battery drawer. Can't leave it on the charger too long or the batteries die. The programmable part no longer works, but. Cheers, Robert. -- _________________________________________________ Robert Stokes Scientific Officer School of Human Movement, Recreation & Performance Victoria University of Technology Ph 61 3 9688 4381 Fax 61 3 9688 4891 Robert.stokes(a)vu.edu.au

24 years, 9 months

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ID this Apple ][ Card

by mcguire＠neurotica.com

On September 27, Vintage Computer Festival wrote: > Onboard are several (6) 24 pin RCA packages marked CDM6116, which I > believe are ROMs. The rest is TTL. Hmm...the 6116 is a 2Kx8 static RAM. -Dave -- Dave McGuire Laurel, MD

24 years, 9 months

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ID this Apple ][ Card

by vcf＠vintage.org

I have a card with the only markings on it being Adaptive Peripherals. It's quite interesting. Onboard are several (6) 24 pin RCA packages marked CDM6116, which I believe are ROMs. The rest is TTL. It leads out to an external box with a centronics interface on it, a switch and LED, and two phono jacks. The switch in one direction seems to activate it, as when I turn on the computer with the switch in that position the LED lights and the system is frozen. The switch in the other position results in a normal boot. If I flip the switch while the system is on then it locks up. If I switch it back and then do a reset, the system resumes. Before I attached a monitor to it, it seemed to make the computer do something different. The normal "beep" when I turned the system on was replaced with a "boop". I finally hooked a monitor up but now the card does not seem to do anything. I hope I didn't fry it as when I was carrying it upstairs I plugged the dangling printer cable from the parallel card into the centronics interface in the external box to keep it >from swinging around. When I first powered it on it was shorting something as the power supply was cycling on/off. I turned it off quickly and unplugged the cable, then turned it on to hear the "boop" sound. So it seemed to be doing something weird until I plugged the monitor in to see what the heck was going on. It's in slot 4, so I checked the memory area at $C400 but there is nothing there. It also has a two AAA batteries on the back which I've taken out. They don't seem to affect the operation. I'm going to put two fresh batteries on to see what different it makes. I'm thinking this was an alternate ROM card, maybe for development or cracking games, although it seems to elaborate for the latter. Any ideas? Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

24 years, 9 months

5
4
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Keep or assemble???

by acme_ent＠bellsouth.net

Tony Duell wrote > Sorry, I wasn't clear. I would enjoy assembling the ZX81 kit They are fun and easy ;>) > (using it is > another matter -- home micros running BASIC are not the most interesting > machines for me) So don't run BASIC. There are some fair assemblers out there for this box and a FORTH, too. Hook up a decent keyboard, fix the display, and have fun. Since you are a hacker I'd think this would be a good toy for you ;>) Not to brag, but my souped-up ZX81 outperforms my Kaypro 10. (Why *is* Kaypro hard- and floppy- disk i/o so slow?) > but I doubt it would take me a couple of days to do so. > More like a couple of hours. Takes me about 3 ;>) One convenient thing about building a kit as opposed to buying an already-built computer is that you can modify it as you build it. For example, when I build a ZX81 I know I won't be using the RF modulator or the keyboard connectors so I can leave them out. If I start with a pre-built unit I have to work around the existing parts. > I suspect that if I ever got an unassembled kit of _anything_ my first > reaction would be to assemble it, no matter how much 'value' it lost by > so doing. I'm with you -- I want to make the kit work! Glen 0/0

24 years, 9 months

2
1
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ID this Apple ][ Card

by mcguire＠neurotica.com

On September 27, Eric Chomko wrote: > > On September 27, Vintage Computer Festival wrote: > > > Onboard are several (6) 24 pin RCA packages marked CDM6116, which I > > > believe are ROMs. The rest is TTL. > > > > Hmm...the 6116 is a 2Kx8 static RAM. > > Additionally, aren't they pin-compatible with 2716s? Yup. -Dave -- Dave McGuire Laurel, MD

24 years, 9 months

1
0
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teletypes & Z80 system

by west＠tseinc.com

Someone just queried me with the following equipment available..... Model 2 teletype with pasting tray Model 15 teletype with manual "Digital Group" Z-80 microcomputer system w/keyboard, monitor, and cassette tape driver storage system Could be a "good find" day today :) Jay West

24 years, 9 months

1
0
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Ancient 6502 FOCAL source code

by ajp166＠bellatlantic.net

I'd be interested in both source and machine readable. It would be fun to run FOCAL again. Allison -----Original Message----- From: Richard Erlacher <edick(a)idcomm.com> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Wednesday, September 26, 2001 5:59 PM Subject: Ancient 6502 FOCAL source code >I've got the machine readable FOCAL source file available now. It's in 6502 >Assembly Language, PAL65 syntax, which will make DEC-users comfortable and the >rest of us cringe, but that's what available. I've been unable to find the >FOCAL manual, which I incorporated into my last assembly of the code, hence >believe it's on a different diskette from which I last assembled the thing in >'81-'82 or so, as a printer exercise, actually. > >Let me know if you want the FOCAL interpreter source, and I'll email it to you. > >Dick > >

24 years, 9 months

3
2
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DECserver 700-16 Pinout

by vance＠ikickass.org

Anyone know where I can find the pinout (as well as reference info) on the DECserver 700-16 terminal server? Thanks. Peace... Sridhar

24 years, 9 months

2
1
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Archiving floppies?

by mark_k＠totalise.co.uk

Hi, On Mon, 24 Sep 2001 Jeff Hellige wrote: > An idea I've had that I may try is using my GVP PC286 board > for my Amiga 500. Oddly, it's the only machine I have capable of > running MS-DOS that also has both 3.5 and 5.25" floppy drives as well > as a hard disk. As I've found in the past, the hard disk is > essential when trying to make disk images. I've never actually tried > using the A1020 5.25" drive as a PC floppy from the PC286 though, but > the manual suggests it should work fine. With the 16mhz '286 > onboard, the PC286 is also faster than the odd XT class machines I > have as well. For those not familiar with it, the GVP PC286 is an > 80286 cpu with 512k RAM that plugs into the internal expansion slot > of the GVP Series II hard disk controllers for the Amiga 500. You don't need the PC286 board or any kind of PC emulator to make disk images of PC floppies using an Amiga. The exact usage will depend on your setup, but you could use commands like Copy DEV:PC0 RAM:diskimage.bin with the free Dev-Handler package installed. Plus, you can make images of protected PC floppies using a program such as MFMWarp (not high density ones until someone updates the program). Source for MFMWarp is available, albeit in 68000 assembly language, so the file format is known/documented to that extent. 5.25" 360K disks are also no problem. By the way, you can image Apple II floppies with an Amiga and A1020 drive. C64 disks too, if you adjust the speed of your A1020; I recommend using a second A1020 for that purpose. Much faster than using a real 1541 drive connected via the serial or parallel port. It should be possible to archive C64 and Apple II disks at the GCR level using an A1020 drive, but as far as I no nobody has written software to do that. There is a program which can read whole (raw) tracks however, which might be useful for analysing copy-protection. Using an 80-track 5.25" drive, it might even be possible to archive C64 etc. disks which use "half-track" protection, but I don't know the details of those schemes so can't say for sure. (The A1020 is a 40-track drive. It should be easy to attach an 80-track 5.25" drive; just use the interface PCB from a spare external Amiga 3.5" drive.) -- Mark

24 years, 9 months

1
0
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Moving heavy equipment

by jfoust＠threedee.com

I wrote: >I've got a lead on a full and working electron microscope. If anyone else is looking, watch : http://www.msa.microscopy.com/SurplusEquipment/SurplusListings.html For example, there's an Amray 1000A SEM and a PGT EDS (digitizing system) with Sun workstation free for pickup, probably in Marlborough, MA. (That's not the system I'm grabbing.) Also, I saw someone mention a pair of (circa 1973) Interdata Model 7/16 minicomputers for sale on eBay, as part of a lot they were dumping from their SEM facility. - John

24 years, 9 months

2
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Available Qbus SCSI Controllers

by dec.parts＠verizon.net

We know that there are a bunch of Qbus system owners that would like a SCSI controller for their systems, so ... The following Qbus SCSI Controllers are available for sale or trade. Sale prices are at lower end commercial market, but if you're "just a hobbyist", the trade option might be your preferred method. If you wish to propose a trade, first ensure you're committed to following through. Second, contact one of the major dealers and find out from them what they'll give you "cash price" for your parts. Third, ask them what their price is for the SCSI controller you're interested in. If the "cash price" they offer you for your parts is lower than the SCSI controller's price, we won't be able to approve the proposal. Also, we can only approve a proposal for parts that we don't already have plenty of, and that we can already find a buyer for in advance. Pictures of these controllers can be seen at ... SCSI Disk and Tape - Aviv_QSA_50-1276_Rev_F1 http://members.bellatlantic.net/~vze2mj6m/dec/Aviv_QSA_50-1276_Rev_F1_.jpg SCSI Disk - Dilog_SQ706_Rev_C http://members.bellatlantic.net/~vze2mj6m/dec/Dilog_SQ706_Rev_C_.jpg SCSI Disk - Dilog_SQ706A_Rev_D http://members.bellatlantic.net/~vze2mj6m/dec/Dilog_SQ706A_Rev_D_.jpg SCSI Disk - Emulex_UC07_10401-01_Rev_F - Two Available http://members.bellatlantic.net/~vze2mj6m/dec/Emulex_UC07_10401-01_Rev_F_.j… SCSI Tape - MTI_QTS25_Rev_D http://members.bellatlantic.net/~vze2mj6m/dec/MTI_QTS25_Rev_D_.jpg The list of parts already in stock ... http://members.bellatlantic.net/~vze2mj6m/web/home.htm dec.parts(a)verizon.net

24 years, 9 months

1
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Apple II 800K Diskettes?

by dhquebbeman＠theestopinalgroup.com

> Why do people insist on calling them 720 K disks? There is no such stupid > invention. They're 1 MB disks, not 720 K, not 800 K, not 880 K. > Oh, and there are no 1.44 MB disks either. True, they're not 1.44, they're 2MB... you can actually get 1.8MB on on if you plow out the wind breaks... I've had some luck with 1.68 and 1.72 formatting, but the 1.8 is pretty chancy... -dq

24 years, 9 months

3
2
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Eldon Hall's book "Journey to the Moon"

by dan＠ekoan.com

Unfortunately I missed VCF East, but does anyone who attended have a lead on where I could purchase a signed copy of Eldon Hall's book "Journey to the Moon"? An autographed copy would be great, but even unsigned would be fine. Thanks! Dan www.decodesystems.com/wanted.html

24 years, 9 months

2
1
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IBM PowerStation 530

by millerbj＠umich.edu

The other day, my University (U of M @ A^2) threw away an old PowerStation 530. Having never seen anything like it before, I grabbed it up and carted it to my dorm room (alone). I've never really seen anything this old, and I'm not sure if this behemoth is even worth keeping. Perhaps it could replace my current Pentium I 110MHz (24MB RAM) as a server, but I'm not sure. Anyway, anyone here have any experience with these machines? Know where I can get a manual? I've only been a computer geek for about... oh... 6 years now, so I've never seen the monitor hook-up either... it's mini-coax and looks like the diagram below: (o)(o)(o) I'm assuming that's RGB... Thanks in advance for any and all help. Now, back to trolling. :o)

24 years, 9 months

11
22
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Keep or assemble???

by RCini＠congressfinancial.com

Hello, all: I'm wondering, without creating flame bait, the pros and cons of keeping a computer kit versus assembling it? I have an unbuilt Sinclair ZX81 kit that I'm toying with assembling. I also have a TV Typewriter-6 kit. I bought the TVT6 for my KIM-1 and the ZX81 I got in a trade. Thoughts? Rich ========================== Richard A. Cini, Jr. Congress Financial Corporation 1133 Avenue of the Americas 30th Floor New York, NY 10036 (212) 545-4402 (212) 840-6259 (facsimile)

24 years, 9 months

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Source for technical manuals?

by Antonio.Carlini＠riverstonenet.com

> They are not cheap, but they are not too expensive either, and often > they're the only source for the manuals. Their CDROM compilations are 25UKP or so each. A single manual runs to 10-15UKP (typically). So if you make reasonable use of their service, it may well pay off to find some way of reading PDFs :-) Antonio

24 years, 9 months

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Keep or assemble???

by acme_ent＠bellsouth.net

Tony Duell wrote: > The only other issues are 'do you enjoy assembling kits'. And 'how much > enjoyment would you get out of assembiing the kit, compared to other uses > of the money' > > In other words, if it took me a couple of days to assemble the kit and I > enjoyed all of it (that would not be the case with a ZX81 kit, but it > would be the case with some of the Heathkits I've read the manuals for) > then $70 is pretty cheap entertainment ;-) Why would you not enjoy assembling and using a ZX81 kit? Glen 0/0

24 years, 9 months

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Interdata 7/32 C maintenance manual

by pechter＠ureach.com

The University of Wollongong in Australia did the 7/32 port IIRC at about the same time. Bill -- Bill Pechter Systems Administrator uReach Technologies 732-335-5432 (Work) 877-661-2126 (Fax) ---- On Wed, 26 Sep 2001, Will Jennings (xds_sigma7(a)hotmail.com) wrote: > The CPU uses DTL. I ought to know, I have 2 of those machines. No, Bell > Labs > ported UNIX to the 8/32, the follow-on machine to the 7/32. It was the > subject of a paper on porting UNIX to other architectures. > > Will J > > _________________________________________________________________ > Get your FREE download of MSN Explorer at > http://explorer.msn.com/intl.asp > > > >

24 years, 9 months

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DEC Licensing Fun

by dittman＠dittman.net

Someone emailed me doubting license generators exist outside of DEC, so here's one you can verify: Issuer: DITTMAN Authorization: DITTMAN-TEST-LICENSE-1 Product Name: THE-UNIVERSE Producer: THE-BIG-BANG Units: 1000000 Version: 1.0 Availability: A Options: (MOD_UNITS) Checksum: 4-BBPB-DBPM-NGKD-DPKB -- Eric Dittman dittman(a)dittman.net Check out the DEC Ethusiasts Club at http://www.dittman.net/

24 years, 9 months

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Interdata 7/32 C maintenance manual

by xds_sigma7＠hotmail.com

The CPU uses DTL. I ought to know, I have 2 of those machines. No, Bell Labs ported UNIX to the 8/32, the follow-on machine to the 7/32. It was the subject of a paper on porting UNIX to other architectures. Will J _________________________________________________________________ Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp

24 years, 9 months

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Moving heavy equipment

by jfoust＠threedee.com

I've got a lead on a full and working electron microscope. It's on-topic because it's old and has some sort of computerized digitizing unit. :-) The console is 41" x 43" and weighs about 300 pounds. The column is 33" x 33" and weighs about 1,200 pounds. It'll suck at least 20 amps so I may need to wire its own circuit. It's wrapped and probably palleted at the pickup location. They have a hand-fork to roll it to the loading dock. I've lined up a big Diesel stake (flat-bed) truck. It'll be about a 2-3 hour drive. We've got straps, boards, tarps. I'm most concerned about getting it *off* the truck and into my office or home basement. Any other thoughts from the group? - John

24 years, 9 months

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Apple II 800K Diskettes?

by dbetz＠xlisper.mv.com

I just acquired an Apple IIgs (thanks Rich!) and am anxious to try it out. I have downloaded the system software from the Apple site but an unsure how to go about making 800K disks for use on the IIgs as none of my local computer stores stock 800K floppies. Is it possible to cover over the hole that tells the drive that it is a HD disk and format it as an 800K disk? Will the 800K drive on the IIgs be able to read it? Or do I have to find a source for real 800K media?

24 years, 9 months

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recent acquisitions for the House of VAX

by dittman＠dittman.net

> Typically someone who has licensed a machine can transfer the license to > you by filling out the license transfer paperwork and by you paying Compaq > $300 to process it. Not all licenses are eligible for transfer, unless this has changed recently. Only the OS, DECnet, and I think cluster license can be transfered. -- Eric Dittman dittman(a)dittman.net Check out the DEC Ethusiasts Club at http://www.dittman.net/

24 years, 9 months

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H&T 20(?) in TRS model 100 ???

by rigdonj＠intellistar.net

I recently found a TR model 100 with an odd looking device plugged into it. Abouty half of the access door on the bach is cut away in it and there is a 20 pin ribbon cable header inside the cut out. Stamped in the header is "H&T 20". I don't know if that's the name of just the head4er or the entire assemble. I removed the cover plate and inside is a small PC card with the header and three SSI ICs (74HC245, 74HC02 amd a 74HC244). The whole thing fits inside the original opening (so you don't have to remove the back case to install or remove it) and it plugs into the 28 pin LSI IC socket. Does anyone know what this is? Hint: It will ber looking fore a home at this weekend's computer junkfest in Orlando. Joe

24 years, 9 months

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Apple II 800K Diskettes?

by sulement＠sisp.net

-----Original Message----- From: Mike Kenzie <KenzieM(a)sympatico.ca> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Monday, September 24, 2001 6:31 PM Subject: Re: Apple II 800K Diskettes? >----- Original Message ----- >From: "David Betz" <dbetz(a)xlisper.mv.com> >To: <classiccmp(a)classiccmp.org> >Sent: Monday, September 24, 2001 8:25 PM >Subject: Apple II 800K Diskettes? > > >> I just acquired an Apple IIgs (thanks Rich!) and am anxious to try >it out. I >> have downloaded the system software from the Apple site but an >unsure how to >> go about making 800K disks for use on the IIgs as none of my local >computer >> stores stock 800K floppies. Is it possible to cover over the hole >that tells >> the drive that it is a HD disk and format it as an 800K disk? Will >the 800K >> drive on the IIgs be able to read it? Or do I have to find a source >for real >> 800K media? > >I have a lead on another IIgs. It should be available as soon as the >owner finished copying the files from it. >I also have a spare IIsi. > > > >Collector of Vintage Computers (www.ncf.ca/~ba600) New 800k disks are available from the US in Harbor City California. My friend Ed Walters at Athana.com has them for sale. Tell him Jeff sent you. He thought so much of getting the format right that he bought a Classic II from me to test them on to be sure they'd work properly. Jeff

24 years, 9 months

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DEC Licensing Fun

by dittman＠dittman.net

> > > >Someone emailed me doubting license generators exist outside of > DEC, > >so here's one you can verify: > > Neat - it works :-) > > So is this PAKGEN or did you build > one yourself? My own. -- Eric Dittman dittman(a)dittman.net Check out the DEC Ethusiasts Club at http://www.dittman.net/

24 years, 9 months

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Qbus HDLC controller -- a "what is it" board

by engdahl＠cle.ab.com

Here's something else from my junk box that somebody might know what to do with: Four half-width Qbus boards, built by Applied Computer Consultants, Santa Barbara, CA. It looks like a DEC compatible DMA board and a three-board Z80-based standalone HDLC controller that sucks power off the Qbus. 1: this one attaches to the Qbus, and is called MDMA. Contains four AM2901 bit slices, a row of microcode ROMs, some logic, and a ribbon cable connector on the front edge. I'd venture a guess that this might be a clone of some DMA board Digital made. 2: this, and the remaining boards, get only power from the backplane. This board has two Zilog DMA's and a bunch of 74LS buffers, latches, and logic, all in sockets. Name: XQCP-I, serial number 235. It has a ribbon cable to the next board. My guess is this is a DMA board that lets the standalone uC talk to the PDP-11's DMA board. 3: a memory board. Contains 8 ROM sockets, 4 of them populated. ROM labels are marked IF-11Q/HDLC. Also 16 TMS4116-20L DRAMs. Name: XQCP-M, serial number 230. There is yet another ribbon cable connecting it to the next board. 4: CPU board. Zilog Z80-A, two more DMAs, an SIO/2, a CTC, and a little logic, all in sockets. Name: XQCP-P, serial number 240. There are two narrow ribbon cables on the front edge. There is no documentation, and I'll never have time to fool with it. If you want it, send me an email, and we'll draw straws in a couple days to see who gets it. -- Jonathan Engdahl???????????????? Rockwell Automation Principal Research Engineer????? 24800 Tungsten Road Advanced Technology????????????? Euclid, OH 44117, USA Euclid Labs????????????????????? engdahl(a)cle.ab.com 216-266-6409

24 years, 9 months

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Source for technical manuals?

by tony.eros＠machm.org

I'm trying to remember a web site I used to visit that had a number of old computer and instrument service guides for sale. I bought a Heathkit EC-1 assembly manual from them. Now, I can't seem to recall the name of the place -- doesn't look like I saved the address in my browser bookmarks, either. I know it's not abebooks or alibris -- any suggestions? -- Tony

24 years, 9 months

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DEC Licensing Fun

by pechter＠ureach.com

Slick... -- Bill Pechter Systems Administrator uReach Technologies 732-335-5432 (Work) 877-661-2126 (Fax) ---- On Tue, 25 Sep 2001, Eric Dittman (dittman(a)dittman.net) wrote: > Someone emailed me doubting license generators exist outside of DEC, > so here's one you can verify: > > Issuer: DITTMAN > Authorization: DITTMAN-TEST-LICENSE-1 > Product Name: THE-UNIVERSE > Producer: THE-BIG-BANG > Units: 1000000 > Version: 1.0 > Availability: A > Options: (MOD_UNITS) > Checksum: 4-BBPB-DBPM-NGKD-DPKB > -- > Eric Dittman > dittman(a)dittman.net > Check out the DEC Ethusiasts Club at http://www.dittman.net/ > > >

24 years, 9 months

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microcoding a PC into a PDP-11 (was: RE: Classic Computers

by mmcfadden＠cmh.edu

Warning Heresy follows :) DG alert! I'm not the expert on microcoding versus writable control stores. I seem to dimely remember that there was a whole section about microcoding in the 1981 book by Tracy Kidder "Soul of a new machine". Lots of microcode was used to emulate "old" instructions from previous machines. Also to perform complex series of instructions. Mike mmcfadden(a)cmh.edu

24 years, 9 months

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DEC Licensing Fun

by Antonio.Carlini＠riverstonenet.com

> Eric Dittman wrote: > >Someone emailed me doubting license generators exist outside of DEC, >so here's one you can verify: Neat - it works :-) So is this PAKGEN or did you build one yourself? Antonio

24 years, 9 months

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