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

by glenslick＠hotmail.com

I have some HP 1000 E/F docs including some power supply docs and at one point I did look at them to see if I could find information about that battery resister. I never found it. But someone else on the list told me that something like an 880ohm resister across the left most and right most terminals of the middle row of the battery connector input would trigger the power supply to power up all of the way. That did the trick for the HP 1000 / 2117F that I have. -Glen >I've found the .pdf version of the HP 1000/M/E/F Engineering Docs, but >every copy I've been able to access is missing section 9 (still can't keep >track of the Roman Numerals they mark the sections with) which covers the >power supply. > >There seems something a tad 'twinky' with mine, tho I seem to recall at >one point someone had directed me to a jumper/resistor that needed to be >installed at the 'Battery Input' connector on the rear to wake something >up, but of course now that I'm working on it I can't find anything... > >Help??? > >-jim _________________________________________________________________ Add photos to your messages with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail&xAPID=42&PS=47575&PI=7324&… http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_addphotos_…

23 years, 4 months

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DEC 3000 300X/300

by fire＠dls.net

I finally am almost within reach of getting my DEC 3000 300 working. A few years ago I foolishly purchased it without memory, thinking it would be a simple matter to inexpensively pick up some memory later. How wrong I was. Now I have purchased a DEC 3000 300X with 160MB memory with the intention of lending 32MB to the 300. Now I look at the back of the machine and my main question is what cable do I need to hook up my VT220, or my VT420, or what model monitor with keyboard and mouse is this thing supposed to work with? In a typical DEC fashion, in the manual they do not mention model numbers of monitor to go with it, but there are rough instructions that I may be able to follow to get dumb terminal console working. I would ideally like to have real monitor on 300X, VT420 on 300, leaving my VT220 free for my MicroVax II. Oh yeah, I have a TK50 in MicroVax II currently. I also have TK70 with correct controller board that I would like to put in its place. Friend who I acquired MicroVax II from claimed that I needed different cable to go from TK70 controller card to TK70 drive than cable for TK50. It looks to me like both cables have 26 pins in two rows of thirteen. I suppose one of the cables might not be straight through but have a twist/transposition of pins. Will my current cable work? Do I need a new one? Once I get it working, anyone want the TK50 drive and controller card? Bradley Slavik

23 years, 4 months

3
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DEC LA36 Decwriter II

by fm.arnold＠gmx.net

Hi, >From: "Fred Flintstone" <iamvirtual(a)hotmail.com> >To: cctalk(a)classiccmp.org >Subject: Re: DEC LA36 Decwriter II >Date: Thu, 26 Dec 2002 13:43:54 -0900 >Reply-To: cctech(a)classiccmp.org > >I guess I should have been more specific :-) > >I have what appears to be an OEM LA36. The label on the front says 'Data >Terminal Mart'. On the back, there is a label from Digital which gives the >model number as LA36DP. The processor board inside is made by Datasouth >Computer Corporation (P/N 512000-2). There is an 8 DIPswitch located on the >board. I do not have any documentation for this particular model and thus, >I do not know what the settings should be on the switches. I do have user >docs for an older LA36, but it does not cover my particular model. > >I am looking for information on the LA36, specifically the 8 dip switches. Ok, you seem to have a third party controller in your LA36. Because DEC build a real heavey-duty construction for the LA36, and let it print only with 30 cps. many people and some companies thought it could do much better. The few companies mentioned before put to the market several replacement- controllers, making a LA36+ (mpnc) with a much better performnce, sometimes 150 or so cps, loadable fonts and/or pixel-graphics ect. The many people bought those controllers and integrated them into their LA36'es and DEC-Fieldservice didn't got tired of telling anyone that a terminal upgraded that way would certainley disintegrate into its atoms "whitin months"... (I've never seen this happen). These 3rd-party controllers would completeley replace the original DEC-made logic board that was attached to the innerside of the back-door, and was about just as big as that door itself. (mpnc = my personal naming convention) So the DEC printset won't help you much with this, you should find a manual of Datasouth, to get details on the dip-switches. (most likeley they set the baudrate, and the switch in the keyboard has maybe got some other function. > >What I am trying to accomplish is to get the terminal console working on my >PDP-11/10 (really it is a PDP-11/05) prior to getting my PDP-11/20 running. > That should be possible, 11/10+05 have only 20mA cuircuits. The 11/05 computer is always the active party (=supplying current to the loop) on both Tx and Rx. The baud-rate is made by a rather unstable pair of one-shot monostables. Use a osscilloscope to set the time of this to either 26 or 35,5 microseconds. You need 26 us for the selection of 150 (tap5) - 2400 (tap1) baud, or 35,5 us for 110 baud on tap5 of the swich. > >When I hook everything up, the SCL on the PDP-11/10 has the expected >voltages. When I connect it up to the LA36, the voltages are driven to near >0v. I think, thats normal, afterall when the terminal is idle, there will be no current flow. Put your multimeter into mA-mode, and put it in series into the loop. Use preferably a cheap passive arrow-meter, the cheaper it is, the better the measurement. Alternativeley, you can also put a led somewhere in the loop. create data-output, and see what happens >I am not sure I have things hooked up correctly, or if there is a >problem with the SCL. I used the docs I had for the older LA36 to connect >my LA36DP. The connections I made were from T+ on the PDP-11 to R+ on the >LA36 and T- on the PDP-11 to R- on the LA36. Seems ok to me. (long time ago...) (Beware however that the naming-conventions for ths 20mA current-loop were not always consistent. There is no industry standard for this. I dont know how Datsouth has named its connection-terminals) If all this is ok, still nothing will happen if the baud-rate is unmatched between 11/05 (rotary switch and trim-potentiometer on M7260) and probably dip-switch and/or Keyboard-button or keyboard sequence on the LA36+ >When the LA36 is not >connected, there is no voltage on the Transmit/Receive which I am presuming >means the LA36 is in passive mode. Ack. >Voltages are present on the Transmit/Receive on the PDP-11 side, >and I presume the SCL is in active mode. Ack. Hope you can solve this. Frank

23 years, 4 months

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DEC 11/03 on eBay

by jpl15＠panix.com

An interesting 11/03 system, has twin DSD 8" drives, and some kind of DSD data acquisition card (A/D D/A???) dunno can't see enough detail in the pics. Seller seems to be rather.... well, 'scattered'.... ;} http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2084606280&category=4193 Cheers John

23 years, 4 months

2
3
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Z8000-Fan

by cpg＠aladdin.de

On 12/27/2002 02:48:31 PM CET G?nter Mewes wrote: > >today I was looking for some Z8000 Fans, to talk about experieces ... >Are you interested ? Yes, I am. regards, chris

23 years, 4 months

1
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Noise levels (was VAX 11/780)

by acme＠ao.net

From: John Lawson <jpl15(a)panix.com> To: Glen Goodwin <acme(a)ao.net> Subject: Re: VAX 11/780 anyone with some working experience out there? Date: 12/25/2002 4:47 PM > another, but no such luck... and I know plenty of folks who spent long > years working in big machine rooms... 90+ dB all the time... no thanks. Umm, 90+ dB? Can this be right?? That seems awfully loud. Is that typical for larger machines? Just one more thing to take into account before I seriously consider moving any larger equipment in here . . . Glen 0/0

23 years, 4 months

4
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IBM 5161

by jingber＠ix.netcom.com

Does anyone have a description of what the "felt pad" for the IBM 5161 looked like, and did this item come from IBM/with the unit? See this thread for reference: http://www.classiccmp.org/mail-archive/classiccmp/1998-12/0378.html Thanks, Jeff

23 years, 4 months

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Trying to make a connector for my Documation M200 card reader

by djg＠drs-esg.com

From: Sellam Ismail <foo(a)siconic.com> >So I guess I should open my reader up and find out which version it used >in order to determine how to wire up my connector to the 6522? > Probably best. On the parts page 12-31 the IC's with the multiple #'s are the ones that change between the versions (see the next page also).

23 years, 4 months

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LA36 various responses

by alderney＠telusplanet.net

One person interested in 20 ma LA36's, and I think an answer in error from Don Maslin. Thanks for the information on the 20 ma question Kevin and Larry I'm not sure if these units are 20ma loop - but from their history I'd expect them all to be the same. The plug on the connecting cable is a DB25 female, and the wires go to pins 1 through 7. Models are; Datacom 400 (the one which may work), 2 Datacom 1200's, and 1 Decwriter III. Does the pin connection help with the 20ma question, or is there a simple test I can make on the lines? I'm not sure from Kevin Hardy's letter if one could just change the wiring - it sounds like it, but these may be OK already. I tried to see if I could tell what the output driver is (as per Larry's comment), but the board isn't very easy to see. There appears to be an output IC labelled 7550 - is this a valid TTL number? Don Woods Message: 3 >From: Barry Moyer <barry.moyer(a)pason.com> >To: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org> >Subject: DEC LA36 >Date: Tue, 24 Dec 2002 09:08:19 -0700 >Reply-To: cctech(a)classiccmp.org > >Don, > >I am in Calgary and I have a newer LA36, but I am looking for another older >LA36 with a 20mA loop connection. You can contact me at 'iamvirtual at >hotmail dot com' (replace at with @, dot with .) > >Thanks > >Barry > ... > >Message: 9 >From: "Fred Flintstone" <iamvirtual(a)hotmail.com> >To: cctalk(a)classiccmp.org >Subject: Re: DEC LA36 units >Date: Tue, 24 Dec 2002 10:46:02 -0900 >Reply-To: cctech(a)classiccmp.org > >Don, > >I am currently looking for an older LA36 which has a 20mA connection (I need >it to connect to my ancient PDP-11s). Do you know the model numbers for the >LA36? > >Thanks. > >--Barry > >. > >Message: 15 >Date: Tue, 24 Dec 2002 15:59:09 -0800 (PST) >From: Don Maslin <donm(a)cts.com> >To: cctalk(a)classiccmp.org >Subject: Re: DEC LA36 units >Reply-To: cctech(a)classiccmp.org > >No Barry, sorry, but Dec printers are outside my area of knowledge. > > - don Message: 4 Date: Thu, 26 Dec 2002 09:39:19 -0700 From: Kevin Handy <kth(a)srv.net> To: cctalk(a)classiccmp.org Subject: Re: DEC LA36 Reply-To: cctech(a)classiccmp.org Barry Moyer wrote: >Don, > >I am in Calgary and I have a newer LA36, but I am looking for another older >LA36 with a 20mA loop connection. You can contact me at 'iamvirtual at >hotmail dot com' (replace at with @, dot with .) > > I believe that the 20ma current loop was available for all the LA36's. It was just a different cabling option, bit a 'new' or 'old' version thing. You could buy the 20ma current loop with your LA36, or later as an option to change an existing one from RS232 to 20ma. Message: 13 From: "Truthan,Larry" <truthanl(a)oclc.org> To: "'iamvirtual(a)hotmail.com'" <iamvirtual(a)hotmail.com> Cc: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org> Subject: DEC LA36 Decwriter II Date: Thu, 26 Dec 2002 16:42:02 -0500 Reply-To: cctech(a)classiccmp.org I have the engineering prints in the LA 36 Decwriter II LA36 (MPC5) sheet 5 of 8 shows 20 ma RECIEVE on J3 pin 7(+) and Pin 3(-) bridged by a 3.3 volt zener D4 746A feeding a 4N26 (E43) opto-isolator which drives a MXAA05 (Q4) driver transitor which has its collector on J4 pin 2 "S.I." (serial in) 20 ma TRANSMIT is on J3 Pin 5(+) and Pin 2(-). These pins are bridged by a 1N4004 diode D6. This diode also is parallel to the emitter/collector of Q2, an A05. which is driven by another 4N26 opto-isolator (E47). S.O. is J4 pin 4. It is driven by a 7404 inverter (E62)-(Input is 7404 pin 3 connected to the diode cathode of the opto-isolator, output is 7404 pin 4, which connects directly to J4 pin 4, "S.O." serial out) Sincerely Larry Truthan

23 years, 4 months

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Free MCA Card (possibly a Streaming Tape Adapter)

by ram_suganthi＠hotmail.com

Hi, I am sending this out again as I got no response. If I dont get one this time, out it goes. I have a MCA card that might be a streaming tape adapter (dont know as I dont have a MCA system). It is free for the taking (shipping charges do apply, unless you are willing to pick it up at 11553 Long Island)... Cheers, Ram _________________________________________________________________ Add photos to your e-mail with MSN 8. Get 3 months FREE*. http://join.msn.com/?page=features/featuredemail&xAPID=42&PS=47575&PI=7324&… http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_addphotos_…

23 years, 4 months

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New software acquisitions

by SUPRDAVE＠aol.com

Finding old computers at the second-hand stores is getting difficult now but I did goto one place and look through some software boxes they had. Lots of DOS based stuff and ... OS/2 ! I got: warp server IBM training book and VCR tape for 2.1 warp 4 with mic faxworks pro galactic civilizations still wrapped warp connect DB2 single user hyperaccess OS2 system sounds IBM attachpak for OS/2 I left behind warp red box but I'm glad I found it all. -- Antique Computer Virtual Museum www.nothingtodo.org

23 years, 4 months

9
12
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Reward for SWTPC PR-40 printer

by Rick＠jelcoventures.com

I am looking for this pretty rare printer - a SWTPC PR-40. Am offering a $200 reward for information leading to a purchase. Rick Crandall rick(a)jelcoventures.com

23 years, 4 months

1
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Amplifier manuals

by cb＠mythtech.net

This isn't exactly on topic as it isn't computer stuff, but it is older than 10 years, and I know there are some audio people on this list. I have the following amplifier manuals or data sheets available: -Shure Data Sheet for models M68, M68FC, M68FCE -Realistic MPA-35 owners manual -Realistic MPA-100 owners manual -Bogen Installation and Operation Manual for models CHS-35A, CHS-60A, CHS-100A -Shure Data Sheet/Manual for models AMS4000, AMS8000 -TOA manual for models A-903, A-906, A-912 -EDCOR data sheet for model MA-35 (two of these) If anyone wants them, just give me an address to mail them to and a list of the ones you want. -chris <http://www.mythtech.net>

23 years, 4 months

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Fw: HP stuff FS

by gil＠vauxelectronics.com

Just passing this on. gil >From: "John" <john_a_s(a)hotmail.com> >To: <gil(a)vauxelectronics.com> >Subject: Fw: HP stuff FS >Date: Mon, 23 Dec 2002 23:05:51 -0000 > >Hi Gil, > >Could you pass this on to ClassicCmp cctalk list please? I think the guy >below has a 1970s HP-1000E for sale, his web page is at: > >http://www.w9fz.com/hp9000/index.html > >The 82901M on the disks page has gone, below is the edited version. > >Wishing you a Happy Christmas! >John > >----- Original Message ----- >From: <w9fz(a)ix.netcom.com> >To: "John" <john_a_s(a)hotmail.com> >Sent: Monday, December 23, 2002 3:16 AM >Subject: Re: HP availability > > >> Hi there: >> >> I think the picture you're talking about was an HP1000E . I actually have >> another one of those in stock ready to go. A guy, who says he is not >really a >> collector, but rather a guy who used to use those in his work, wanted that >> one. Apparently he had some software punch tapes and a reader and he read >> some code into it. There were two HP1000E's. THe one in the picture is >the >> shorter one. THe one I have now available is the taller one. >> >> Bruce Richardson >> W9FZ > > ;----------------------------------------------------------- ; vaux electronics, inc. 480-354-5556 ; http://www.vauxelectronics.com (fax: 480-354-5558) ;-----------------------------------------------------------

23 years, 4 months

1
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Otrona Attache

by Robert_Feldman＠jdedwards.com

Steve, Last question first: his eBay seller's ID is "grizzylee" and one of his auctions is at http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=2052204164. As to your first question, depends on how much you like the Otrona, and how much of a collector you are. I still have my 8:16. If you try to sell your Attache, don't expect more than $50-$75 on eBay. I have seen some go for more, but there does not seem to be a "hot" market for them. As to the video, I have heard that the video chip (a 5027, IIRC) often went bad, but I do not know if that would cause the symptom you see (Tony?). It might just need an adjustment to the Vertical Sync pot. Bob -----Original Message----- From: Steve Smith [mailto:ssmith12@rochester.rr.com] Sent: Tuesday, December 24, 2002 8:17 PM To: cctech(a)classiccmp.org Subject: Otrona Attache Hi J.C., I have a functioning Attache (it has some video probs; like vertical roll) which I've owned since new. Should I fix it or sell it? If so, how (either/both). And who is this Donald that has all Otrona's inventory? If you don't mind my asking.... --Steve Smith

23 years, 4 months

2
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Additional information for Labtech manuals

by vcf＠siconic.com

The date of publication for the manuals I am seeking should be circa 1986-1987. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

1
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Need documentation for Chips & Technologies Super386

by vcf＠siconic.com

I need any documentation for the Chips & Technologies Super386 chipset. $$$ -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

1
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Searching for Labtech software manuals ($$$)

by vcf＠siconic.com

I am seeking out the manuals for the following software by Labtech: Acquire Notebook Realtime Access Also looking for the manual for Strawberry Tree Computers "Laboratory & Industrial Data Acquisition & Control". If you've got them, please e-mail me directly at <sellam(a)vintage.org>. There is a bounty on each one. -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

1
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DEC LA36 Decwriter II

by iamvirtual＠hotmail.com

I guess I should have been more specific :-) I have what appears to be an OEM LA36. The label on the front says 'Data Terminal Mart'. On the back, there is a label from Digital which gives the model number as LA36DP. The processor board inside is made by Datasouth Computer Corporation (P/N 512000-2). There is an 8 DIPswitch located on the board. I do not have any documentation for this particular model and thus, I do not know what the settings should be on the switches. I do have user docs for an older LA36, but it does not cover my particular model. I am looking for information on the LA36, specifically the 8 dip switches. What I am trying to accomplish is to get the terminal console working on my PDP-11/10 (really it is a PDP-11/05) prior to getting my PDP-11/20 running. When I hook everything up, the SCL on the PDP-11/10 has the expected voltages. When I connect it up to the LA36, the voltages are driven to near 0v. I am not sure I have things hooked up correctly, or if there is a problem with the SCL. I used the docs I had for the older LA36 to connect my LA36DP. The connections I made were from T+ on the PDP-11 to R+ on the LA36 and T- on the PDP-11 to R- on the LA36. When the LA36 is not connected, there is no voltage on the Transmit/Receive which I am presuming means the LA36 is in passive mode. Voltages are present on the Transmit/Receive on the PDP-11 side, and I presume the SCL is in active mode. Unfortunately, I am not sure if this is correct (I am from the RS232 generation, the 20mA is slightly confusing). Any ideas? >From: "Truthan,Larry" <truthanl(a)oclc.org> >Reply-To: cctalk(a)classiccmp.org >To: "'iamvirtual(a)hotmail.com'" <iamvirtual(a)hotmail.com> >CC: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org> >Subject: DEC LA36 Decwriter II >Date: Thu, 26 Dec 2002 16:42:02 -0500 > >I have the engineering prints in the LA 36 Decwriter II > >LA36 (MPC5) sheet 5 of 8 shows 20 ma RECIEVE on J3 pin 7(+) and Pin 3(-) >bridged by a 3.3 volt zener D4 746A feeding a 4N26 (E43) opto-isolator >which drives a MXAA05 (Q4) driver transitor which has its collector on J4 >pin 2 "S.I." (serial in) > >20 ma TRANSMIT is on J3 Pin 5(+) and Pin 2(-). These pins are bridged >by a 1N4004 diode D6. This diode also is parallel to the >emitter/collector of Q2, an A05. which is driven by another 4N26 >opto-isolator (E47). S.O. is J4 pin 4. It is driven by a 7404 >inverter >(E62)-(Input is 7404 pin 3 connected to the diode cathode of the >opto-isolator, output is 7404 pin 4, which connects directly to J4 pin 4, >"S.O." serial out) > >Sincerely > >Larry Truthan > > >In reply to: > >Message: 29 >Date: Thu, 26 Dec 2002 09:39:19 -0700 >From: Kevin Handy <kth(a)srv.net> >To: cctalk(a)classiccmp.org >Subject: Re: DEC LA36 _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 3 months FREE*. http://join.msn.com/?page=features/junkmail&xAPID=42&PS=47575&PI=7324&DI=74… http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_stopmoresp…

23 years, 4 months

2
1
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Other (non-HP) DOS clamshells?

by Robert_Feldman＠jdedwards.com

Prolinear made a model with an 80386 processor. -----Original Message----- From: evan [mailto:evan947@yahoo.com] Sent: Thursday, December 26, 2002 6:31 AM To: cctech(a)classiccmp.org Subject: Other (non-HP) DOS clamshells? Hi all... besides than the HP-95/100/200, what are other DOS clamshells of the era? I'm aware of the Atari Portfolio and the Poqet device, but there are several more, methinks...

23 years, 4 months

1
0
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Z8000-Fan

by info＠mewesbus.de

Hi Mr. Johnston, today I was looking for some Z8000 Fans, to talk about experieces ... Are you interested ? Please, be so kind and send a mail. Guenter Mewes (www.guentermewes.de)

23 years, 4 months

1
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Looking for docs on Spectron D502 data analyzer

by jimw＠agora.rdrop.com

Subject pretty much says it all. Anyone got docs on this critter? Thanks; -jim --- jimw(a)agora.rdrop.com The Computer Garage - http://www.rdrop.com/~jimw

23 years, 4 months

1
0
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Other (non-HP) DOS clamshells?

by evan947＠yahoo.com

Hi all... besides than the HP-95/100/200, what are other DOS clamshells of the era? I'm aware of the Atari Portfolio and the Poqet device, but there are several more, methinks... __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

3
2
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Thrift Find: New Mattel Aquarius

by erd_6502＠yahoo.com

I was browsing at the Goodwill yesterday and ran across what seemed to be a new (out of box) Mattel Aquarius. It still had the plastic protector on the wall wart pins, and there were no scratches on those mains pins. The unit was clean overall with no noticable scratches or wear. Has cassette cable. The downside: $24.95. White tag, so no possibility of a discount. I've kinda always wanted an Aquarius, but that seems high to me. Am I wrong? I left it on the shelf. Did pick up an Apple PowerMac AV card with a pair of the mini-DIN-to-RCA input/output cables and a System 7.5 CD in the box - $5. -ethan __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

4
8
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Trying to make a connector for my Documation M200 card reader

by vcf＠siconic.com

So I'm using the holiday pause to hopefully get my project to build an interface for my Documation M200 card reader back on track. I'm using an Apple ][ with a serial card and custom 6522 VIA card as a parallel to serial converter. The 6522 has just enough inputs to read all data and signal lines from the reader. The documenation from the reader is online thanks to David Gesswein. It has been very helpful, but proves to be too cryptic for this novice to be able to build the connector. I have the ELCO connector almost all wired up. The last step is to get the wiring between the cable and the 6522 VIA connector bridge that I've built. The manual says the output is a "type 7404 TTL output" and a diagram in the same shows some voltages and current draws that make no sense to me and don't really facilitate an understanding (at least to this untrained eye) of what to expect on the pins as data is read.

23 years, 4 months

5
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Trying to make a connector for my Documation M200 card reader

by djg＠drs-esg.com

>From: Vintage Computer Festival <vcf(a)siconic.com> >>From Section 5.4: Signal Characteristics: > >"The standard interface is supplied as the output of TTL type 7404. >Signal sense is specified as a Logical TRUE and is a positive level; >logical FALSE is a ground level. Circuit characteristics are shown in >figure 5-2." > >This excerpt can be found on Page 46 at: > >http://www.pdp8.net/pdp8cgi/query_docs/tifftopdf.pl/pdp8docs/74226-300dpi.p… > >(warning: this server is a bit slow) > Seems fine from here :-). It's a mighty 486-133 (and meets the 10 year rule) with a 384k DSL. Most of the documents have a link to a copy mirrired on highgate which has better connectivity. I assume it was the speed of downloading the documents you were commenting on. >Figure 5-2 is approximately this: > > o Output Drive > | TTL type 7416 > / > \ I Logical True > R / load Iload = -400 ua @ 2.4V min (with R=5.6K) > \ > | > +---------------> > | > / > | I Logical False >-----| sink Isink = 16 ma @ 0.4V max > | > \v > | > +---------------< > | > GND > >So I was told before that the way this works is that a signal will be >output as "Logical True" voltage when the data is a '1' and a "Logical >False" when the data is a '0'. But the way the connector is wired is >confusing. > >Each of the 12 data lines (for reading the holes on the card) has 2 pins: >the "data" pin and then the "data return" pin. See page 45 of the URL >above. > The return is the ground reference. >I imagine the data pin goes into one of my inputs on the 6522 (which >handles TTL levels). However, I was told by Jim Willing that I should use >an optoisolator in between the output of the reader and the 6522 because >the output voltage is clamped mechanically(?) > It appears to be driven by a TTL Logic. Page 10-3 shows the output connector which data lines go to the control card pg 10-20 and the returns go to the DC return (power supply ground). From page 5-6 which you got the output diagram from it says that twisted pair cable was recommended with the returns terminated close as possible to the data receivers. Running the grounds with the data lines in the twisted pair like that gave a little more noise immunity. The control card parts list (PG 12-31) seems to have a couple versions, normal TTL (7404), open collector outputs (7416) with pullups or open collector with inverted data (7417). >But where does the RET >(return) pin go? To ground? > Ground it to the ground of your receiver card. >Do I really need the optoisolators? Is the >6522 robust enough to just take the raw signal from the reader output? > I wouldn't bother with the optoisolators and I don't think the PDP-8 card did either. Anybody have a spare M843 CR8E card reader control or schematics for it? Polling from an Apple ][ should be slow enough that it won't see the glitches that are likely to happen on transisions of the index mark signal. I frequently will read strobe signals like that until I get the same value twice then act on it. David Gesswein http://www.pdp8.net/ -- Run an old computer with blinkenlights. Have any PDP-8 stuff you're willing to part with?

23 years, 4 months

3
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DEC LA36 Decwriter II

by truthanl＠oclc.org

I have the engineering prints in the LA 36 Decwriter II LA36 (MPC5) sheet 5 of 8 shows 20 ma RECIEVE on J3 pin 7(+) and Pin 3(-) bridged by a 3.3 volt zener D4 746A feeding a 4N26 (E43) opto-isolator which drives a MXAA05 (Q4) driver transitor which has its collector on J4 pin 2 "S.I." (serial in) 20 ma TRANSMIT is on J3 Pin 5(+) and Pin 2(-). These pins are bridged by a 1N4004 diode D6. This diode also is parallel to the emitter/collector of Q2, an A05. which is driven by another 4N26 opto-isolator (E47). S.O. is J4 pin 4. It is driven by a 7404 inverter (E62)-(Input is 7404 pin 3 connected to the diode cathode of the opto-isolator, output is 7404 pin 4, which connects directly to J4 pin 4, "S.O." serial out) Sincerely Larry Truthan In reply to: Message: 29 Date: Thu, 26 Dec 2002 09:39:19 -0700 From: Kevin Handy <kth(a)srv.net> To: cctalk(a)classiccmp.org Subject: Re: DEC LA36

23 years, 4 months

1
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Looking for HP 10342B Bus Preprocessor software

by charles＠socketcom.com

Glen, Thanks for the reply. The files on your ZIP archive do not want to load on my 16500A. How did you create the archive? When I look at the files with a HEX editor the seem to be in the HP LIF format. I used the LIFUTIL.EXE to create a disk that my analyzer can read but the files all appear to be corrupted. Thanks, Charles. ----- Original Message ----- From: "Glen S" <glenslick(a)hotmail.com> To: <charles(a)socketcom.com> Sent: Wednesday, December 25, 2002 10:04 PM Subject: Re: Looking for HP 10342B Bus Preprocessor software > Try the attached .zip file. > > -Glen > > > >From: "Charles Ader" <charles(a)socketcom.com> > >Reply-To: cctalk(a)classiccmp.org > >To: <cctech(a)classiccmp.org> > >Subject: Looking for HP 10342B Bus Preprocessor software > >Date: Wed, 25 Dec 2002 21:42:30 -0800 > > > >I am trying to find the software that is needed > >for an HP 16500A logic analyzer to operate the > >HP 10342B Bus Preprocessor. > > > >The HP16500A I am using has an 16510A analyzer > >module. I just need the analyzer setup files and > >inverse assembler. > > > >Thanks, > >Charles Ader.

23 years, 4 months

1
0
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PCjr with sidecard

by cb＠mythtech.net

My local thrift store has (had?) a PCjr with parallel port sidecard on the 24th. They were asking $12.50 for it. No keyboard, power brick, or any other parts were visible. My guess is they had no idea what it was, since they have a policy against selling computers. It was there on the 24th, so it might still be there now. If anyone wants it, I can pick it up for them. -chris <http://www.mythtech.net>

23 years, 4 months

1
0
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DEC LA36

by barry.moyer＠pason.com

Don, I am in Calgary and I have a newer LA36, but I am looking for another older LA36 with a 20mA loop connection. You can contact me at 'iamvirtual at hotmail dot com' (replace at with @, dot with .) Thanks Barry

23 years, 4 months

2
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Free to a good home: DEC VT330

by john＠elsbree.org

Wow, there was a lot of interest in this item! It has now been claimed. Happy holidays everyone, John -----Original Message----- From: John Elsbree [mailto:john@elsbree.org] Sent: Monday, December 23, 2002 4:36 PM To: 'cctalk(a)classiccmp.org' Subject: Free to a good home: DEC VT330 Free + shipping: DEC VT330 monochrome graphics terminal. Excellent condition, in working order. Includes LK201 keyboard, VSXXX mouse, and 3 "preliminary draft" manuals: - Installing and Using - Programmer Reference Manual, Vol I: Text Programming - Programmer Reference Manual, Vol II: Graphics Programming This was a "field test" unit from the days when I was a beta site for DEC. Please reply off-list. John john(a)elsbree.org

23 years, 4 months

1
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Looking for HP 10342B Bus Preprocessor software

by glenslick＠hotmail.com

I have them. I can send you a .zip file with them. -Glen >From: "Charles Ader" <charles(a)socketcom.com> >Reply-To: cctalk(a)classiccmp.org >To: <cctech(a)classiccmp.org> >Subject: Looking for HP 10342B Bus Preprocessor software >Date: Wed, 25 Dec 2002 21:42:30 -0800 > >I am trying to find the software that is needed >for an HP 16500A logic analyzer to operate the >HP 10342B Bus Preprocessor. > >The HP16500A I am using has an 16510A analyzer >module. I just need the analyzer setup files and >inverse assembler. > >Thanks, >Charles Ader. _________________________________________________________________ The new MSN 8: smart spam protection and 3 months FREE*. http://join.msn.com/?page=features/junkmail&xAPID=42&PS=47575&PI=7324&DI=74… http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_smartspamp…

23 years, 4 months

1
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Computer Audio Tape Formats

by pete＠dunnington.u-net.com

On Dec 17, 16:00, Dwight K. Elvey wrote: > Here is one that is even a little different still. > It is what is called Manchester encoding, using biphase > clocking. You don't indicate 1 or 0, you indicate a change > by a quick clock and no change by a long clock. > This is the type of encoding used on my Poly88 for > what they call PolyPhase. This runs at 2400 baud. The Exidy Sorcerer also uses Manchester encoding. For 1200 baud this equates to 1 cycle of 1200 Hz for a logic 1, and a half cycle of 600 Hz for a logic zero. For 300 baud it becomes 8 cycles of 2400 Hz and 4 cycles of 1200 Hz. It sounds like plain FSK, but if you draw the waveform for "101100" at 1200, you'll see it's actually a Manchester code: __ _____ __ __ _____ | |__| |__| |__| |_____| | --1-- --0-- --1-- --1-- --0-- --0-- > There is a standard called Byte format that uses 300 baud > and the two tones 1200 and 2400. Byte format is Kansas City format. It was proposed in Byte and formalised at the KC meeting. I think the Commodore PET uses modified CUTS. It records each block twice, which is why it's relatively slow, but also pretty robust. -- Pete Peter Turnbull Network Manager University of York

23 years, 4 months

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Looking for HP 10342B Bus Preprocessor software

by charles＠socketcom.com

I am trying to find the software that is needed for an HP 16500A logic analyzer to operate the HP 10342B Bus Preprocessor. The HP16500A I am using has an 16510A analyzer module. I just need the analyzer setup files and inverse assembler. Thanks, Charles Ader.

23 years, 4 months

1
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Test message

by kyrrin＠bluefeathertech.com

Pardon the test. Merry Christmas. ;-) -=-=-=-=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com ARS KC7GR (Formerly WD6EOS) since 12-77 -- kyrrin(a)bluefeathertech.com "I'll get a life when someone demonstrates that it would be superior to what I have now..." (Taki Kogoma, aka Gym Z. Quirk)

23 years, 4 months

2
1
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Happy Holidays

by mhscc＠canada.com

Merry Christmas, Happy Holidays, Happy New Year, Fruitful Collecting, whatever good wishes mean the most to you! It's been fun and interesting to be a part of this group for the last year and a half or so; thanks! mike

23 years, 4 months

1
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Digital SCSI Controller ???

by sipke＠wxs.nl

I was donated a very long (full PC-XT length) PCI card with: -An Intel I960 CPU. -A Symbios Login 53C720 -Chip -A LSI LIA9616 21-40677-02 DC74468 NNM9642 WE1557 -Chip -And Various SMD ram and Rom chips Boardnumbers I found: -5022943-01-H01-P02 (SMS2) -5422944-K Adapter Is there anybody out there who's got a clue ? Sipke de Wal -------------------------------------------------------- http://xgistor.ath.cx --------------------------------------------------------

23 years, 4 months

4
3
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Microwave Experiments

by marvin＠rain.org

I know this is OT, but I think most people on the list would enjoy this kind of stuff. There is also a link to a Plasmoid experiment and other interesting stuff! http://www.amasci.com/weird/microexp.html Merry Christmas to everyone!!!

23 years, 4 months

1
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RS232 or Parallel port based keyboards and joysticks

by ram_suganthi＠hotmail.com

I found the following website that basically does what I need using a SUN Keyboard: http://atrey.karlin.mff.cuni.cz/~vojtech/input/adapters.html As for joysticks, is the gameport joysticks a version of an RS232? Is it possible to convert gameport to RS232 signals? Thanks for the responses... Ram _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963

23 years, 4 months

3
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VT50 connection

by Antonio.Carlini＠riverstonenet.com

>I am trying to find the 20mA connection diagram for a VT50 terminal. The VT50 is very similar to >the VT52, but has a terminal strip on the underside of the terminal where the 20mA connection is >made. I do not know which terminal is which. If anyone has a schematic of the VT50, I would very >much like a copy. A scan of the VT50/VT52 Pocket Service guide lives at http://www.vt100.net. There's a whole bunch of other VT5x stuff there too. I don't recall whether actual schematics are to be found there or not. Antonio

23 years, 4 months

1
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Otrona Attache

by ssmith12＠rochester.rr.com

Hi J.C., I have a functioning Attache (it has some video probs; like vertical roll) which I've owned since new. Should I fix it or sell it? If so, how (either/both). And who is this Donald that has all Otrona's inventory? If you don't mind my asking.... --Steve Smith

23 years, 4 months

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looking for Xerox Alto

by p_reale＠minotaurz.com

I am looking for any version of rthe Xerox PARC Alto for my museum. I am located in Southern Calif. IO might also have something equally valuable to trade (like a Silicon Graphics 2400 Turbo) in a mini.

23 years, 4 months

1
0
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DEC LA36 units

by iamvirtual＠hotmail.com

Don, I am currently looking for an older LA36 which has a 20mA connection (I need it to connect to my ancient PDP-11s). Do you know the model numbers for the LA36? Thanks. --Barry >From: alderney(a)telusplanet.net (Don and Jose Woods) >Reply-To: cctalk(a)classiccmp.org >To: cctech(a)classiccmp.org >Subject: DEC LA36 units >Date: Mon, 23 Dec 2002 14:46:05 -0700 > >I have 4 DEC LA36 units in various states of disrepair. One appears to be >functioning, apart from the printhead itself, the others probably have >usable components, but I have limited ability to test much beyond the >various motor drives. If anyone needs parts I would be willing to >dismantle >and ship for the cost of the freight - which may be the biggest problem as >I >am located in Alberta, Canada. Don Woods _________________________________________________________________ MSN 8: advanced junk mail protection and 3 months FREE*. http://join.msn.com/?page=features/junkmail&xAPID=42&PS=47575&PI=7324&DI=74… http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_advancedjm…

23 years, 4 months

2
1
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Digital SCSI Controller ???

by acme＠ao.net

Got an FCC ID number on that board (assuming it was for sale in the US)? Glen Goodwin 0/0 From: Sipke de Wal <sipke(a)wxs.nl> To: Glen Goodwin <acme(a)ao.net> Subject: Digital SCSI Controller ??? Date: 12/24/2002 12:36 AM > I was donated a very long (full PC-XT length) PCI card with: > -An Intel I960 CPU. > -A Symbios Login 53C720 -Chip > -A LSI LIA9616 21-40677-02 DC74468 NNM9642 WE1557 -Chip > -And Various SMD ram and Rom chips > > > Boardnumbers I found: > > -5022943-01-H01-P02 (SMS2) > -5422944-K Adapter > > Is there anybody out there who's got a clue ? > > Sipke de Wal > -------------------------------------------------------- > http://xgistor.ath.cx > -------------------------------------------------------- >

23 years, 4 months

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Free to a good home: DEC VT330

by john＠elsbree.org

Free + shipping: DEC VT330 monochrome graphics terminal. Excellent condition, in working order. Includes LK201 keyboard, VSXXX mouse, and 3 "preliminary draft" manuals: - Installing and Using - Programmer Reference Manual, Vol I: Text Programming - Programmer Reference Manual, Vol II: Graphics Programming This was a "field test" unit from the days when I was a beta site for DEC. Please reply off-list. John john(a)elsbree.org

23 years, 4 months

2
1
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Need help identifying a MOSTEK chip

by phillipmilks＠juno.com

I think that there is some confusion on this part. First : Mostek wasn't in the TTL business, perse Second: I'm pretty sure that the part referenced below was a 7449, a cousin of the 7448. Thirdly : 7429 is most probably a date code. From: Tom Kwasniewski >I cannot find the 7429 in any TTL data books but I have a couple of dozen I believe that it's a BCD to 7 segment (LED) decoder with open collector outputs. Not sure of the pinout, though.

23 years, 4 months

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Free to a good home: DEC VT330

by iamvirtual＠hotmail.com

John, Do you live in Canada? If so, I would be interested in the terminal. Thanks. --barry >From: "John Elsbree" <john(a)elsbree.org> >Reply-To: cctalk(a)classiccmp.org >To: <cctalk(a)classiccmp.org> >Subject: Free to a good home: DEC VT330 >Date: Mon, 23 Dec 2002 16:36:23 -0800 > >Free + shipping: > >DEC VT330 monochrome graphics terminal. Excellent condition, in working >order. > >Includes LK201 keyboard, VSXXX mouse, and 3 "preliminary draft" manuals: >- Installing and Using >- Programmer Reference Manual, Vol I: Text Programming >- Programmer Reference Manual, Vol II: Graphics Programming > >This was a "field test" unit from the days when I was a beta site for >DEC. > >Please reply off-list. > >John >john(a)elsbree.org _________________________________________________________________ MSN 8 limited-time offer: Join now and get 3 months FREE*. http://join.msn.com/?page=dept/dialup&xAPID=42&PS=47575&PI=7324&DI=7474&SU= http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_newmsn8ish…

23 years, 4 months

1
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Happy Holidays to all

by loedman1＠juno.com

May the New Year bring many new "Discoverys" and no "Magic Smoke" Rich

23 years, 4 months

1
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WTD: TMS2532, HN462532 or 2732 EPROMs

by philpem＠dsl.pipex.com

Hi, Well, it looks like the deadbeat seller who was supposed to be selling me the HN462532 EPROMs has vanished. He's screwed over another 18 people besides me and has earned a reputation for ignoring emails. So, I now need to find another source for some HN462532 or TMS2532 (preferred) or 2732 (I'll need to do some bodging to use these, but still usable) EPROMs. I need at least two of the same type of device, preferably four (so I've got some spares). I've got a 10 Euro note/bill/whatever sitting on my desk that I'm willing to use as payment, or I'll pay in Pounds Sterling. Or Paypal. Your choice. It looks like my stupid mistake with the Ace put a -12V spike on one of the data lines and fried everything on the main MCU bus. That is, address decoder, secondary decoding, main RAM, CPU and ROMs. And just when I thought this year couldn't get any worse, my Sansui 210 tuner-amp decided to blow its right aux channel this morning. Although this is a bit OT, I was wondering if anyone here had a service manual for this model they could copy for me? Heck, at this point even a schematic would be useful... Thanks. -- Phil. philpem(a)dsl.pipex.com http://www.philpem.dsl.pipex.com/

23 years, 4 months

7
15
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DEC LA36 units

by alderney＠telusplanet.net

I have 4 DEC LA36 units in various states of disrepair. One appears to be functioning, apart from the printhead itself, the others probably have usable components, but I have limited ability to test much beyond the various motor drives. If anyone needs parts I would be willing to dismantle and ship for the cost of the freight - which may be the biggest problem as I am located in Alberta, Canada. Don Woods

23 years, 4 months

2
1
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My old computer gear-- Any interest?

by us21090＠yahoo.com

It was interesting to look through the archives. Sad, too. Too many of those computers are familiar!! Hey, I probably started way back with a Olivetti Underwood Programma 101 (http://www.silab.it/frox/p101). That was one of my first real experiences with a programmable computer (some would say calculator), way back in the early 70's. Somewhere after that I did some programming on a TRS-80, storing my programs on audio tape. And I wish I could use my HP-25 calculator (1976). I need to find replacement rechargeable batteries. It was amazing what one could program into that thing with only 49 steps locations! Fun stuff and RPN was interesting. Blah, blah, blah. PDP-11, DEC-System 10, Apple II in college... so on. Anyway, cleaning up through my things I've pretty much decided to break the ties and offer up a few pieces of equipment, if you know of any interested parties: ------------------------------------------------------------ SUN 3/160 CPU board (pn 501-1208) Its a 68020 @ 16.67MHz, 68881, Sun-3 MMU, 4MB, 2 MIPS, 9U VME format, B/W video, Ethernet, serial, parallel ports. This board weighs nearly 4 pounds! The site http://www.sunstuff.org/hardware/systems/sun3/sun3/3-160/ claims this is the first 68020-based Sun machine. ------------------------------------------------------------ >From the same 3/160 machine (which years ago I hauled off the 200 some pounds of chassis-- don't hate me!)... Clearpoint SNXRAM Memory Board (dated 1986) Populated with 8MB with sockets for another 4MB, if you have the necessary 144 MCM6256 (256K x 1bit) memory chips (with an extra parity bit for every eight, the numbers work out). ------------------------------------------------------------ Maxtor XT 43805 380MB SCSI Disk Full Height - Approx 6x8x3 5.5 pounds ------------------------------------------------------------ Micropolis 1325 ST506 85MB SCSI Disk Full Height - Approx 6x8x3 6 pounds Dated 1986 ------------------------------------------------------------ KIM-1 Microcomputer system (late 70s?) It's a 6502-based micro. According to http://www.6502.org/oldmicro/buildkim/kim.htm, "The KIM-1 is the first computer developed by Commodore, or better, MOS [Technologies]. MOS was an IC producing factory which Commodore took over to be sure of a constant supply of ICs.... The KIM-1 has 1152 bytes of RAM, 2048 bytes of ROM and 30 I/O-lines. Some of these lines are used to drive six 7-segment LED-displays and others are used to read the little hexadecimal keyboard." You would use audio tape for storage and use a teletype, etc. for My father built this unit up with more memory, nice power supply, etc. ------------------------------------------------------------ That's about it (I really don't consider old 386 PCs as interesting), though I do have a Casio FX-7000 graphing scientific calculator (1985). But I saw on ebay going for $6. Its not about the money, it just shows there isn't much interest in it. Thanks for your time. If you know of anyone interested in these things, let me know (I may keep the KIM-1). Scott Austin __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

8
9
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VT50 connection

by barry.moyer＠pason.com

Greetings, I am trying to find the 20mA connection diagram for a VT50 terminal. The VT50 is very similar to the VT52, but has a terminal strip on the underside of the terminal where the 20mA connection is made. I do not know which terminal is which. If anyone has a schematic of the VT50, I would very much like a copy. Thanks.

23 years, 4 months

1
0
0 0

penpoint

by okto8＠hotmail.com

i saw an old post of yours on the classiccmp.org maillist, and im VERY interested in getting penpoint if you still have a copy. i have an NCR system 3125 with windows 3.1 for pen, and i cant stand it. any help you can provide at all would be greatly appreciated thank you very much, okto simaia _________________________________________________________________ Add photos to your e-mail with MSN 8. Get 3 months FREE*. http://join.msn.com/?page=features/featuredemail&xAPID=42&PS=47575&PI=7324&… http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_addphotos_…

23 years, 4 months

2
1
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Need help identifying a MOSTEK chip

by tkwasnie＠adelphia.net

I cannot find the 7429 in any TTL data books but I have a couple of dozen. They are 14 pin and I would like to know also so I could use them. Tom K.

23 years, 4 months

8
8
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WTD: TMS2532, HN462532 or 2732 EPROMs

by pete＠dunnington.u-net.com

On Dec 23, 0:04, Philip Pemberton wrote: > You lucky devil! A Dataman S3 (aka "Softy 3")? I saw an S4 for ?165 at a > hamfest. Had there been a bank machine within 10 miles I would have bought > it. It would have been a good buy. With the right adaptor , it can also do several types of PALs, GALS, and other devices. Sadly, my S3 is rather more limited. OTOH, it cost less than ?165. > But there is some consolation. I'm getting an Elnec PrEPROM-02aLV EPROM > programmer for Christmas, so all is not lost. That will certainly do the job. > > I can check the Hitachi data > > sheets to make sure it uses the correct parameters for OTP devices, > > in case they're different from "normal" EPROMs. > That would be great - have you got a copy of the TI TMS2532 datasheet, too? The OTP package is identical to the ceramic/quartz package, so no problem there. The HN462532 is pin-compatible to the TMS2532 as well, so that's no problem either. Both use a single 50ms programing pulse with Vpp=25V. -- Pete Peter Turnbull Network Manager University of York

23 years, 4 months

2
1
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My old computer gear-- Any interest?

by mbg＠TheWorld.com

>dave you have a 28s - i loved mine till it died - sent it to hp to fix >and they sent me a 48 to replace it - it had the best keyboard instead >of having to shift alpha modes all the time - billp >On Monday, December 23, 2002, at 04:48 , Dave McGuire wrote: I loved my 42s until someone stole it... and the cost on ebay to replace it is prohibitive... Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | email: mbg at world.std.com | | | | | "this space | (s/ at /@/) | | unavoidably left blank" | URL: http://world.std.com/~mbg/ | | | "pdp-11 programmer - some assembler | | (DEC '77-'98) | required." - mbg KB1FCA | +--------------------------------+-------------------------------------+

23 years, 4 months

1
0
0 0

A very special "holiday"

by spectre＠stockholm.ptloma.edu

In this day of special holidays, we must remember today's most important celebration ... the transistor, in 1947 (IIRC?). Merry Transistor Day, -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- All wiyht. Rho sritched mg kegcaps awound? ---------------------------------

23 years, 4 months

3
2
0 0

VT50 Connection

by iamvirtual＠hotmail.com

Greetings, Does anyone have information on which terminal is which for the DEC VT50 terminal? The 20mA connection is done via screw terminals on the underside of the VT50, but I do not have any information on which terminal is which. If anyone has a schematic of this beast, I would be very interested in a copy. Thanks _________________________________________________________________ MSN 8 limited-time offer: Join now and get 3 months FREE*. http://join.msn.com/?page=dept/dialup&xAPID=42&PS=47575&PI=7324&DI=7474&SU= http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_newmsn8ish…

23 years, 4 months

1
0
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Tandy Xenix resources - spelling fix

by kelly＠catcorner.org

I'm trying to locate a copy of the instructions for connecting a Model 2000 keyboard to a Model 6000 computer. They were included in the swap region of one of the boot disks for Xenix 3.2.something. Does anyone have a copy of this file anywhere? I think it is called m6010.tar (or something similar). Any other Tandy Xenix resouces out there? Thanks, Kelly kb2syd

23 years, 4 months

1
0
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Tany Xenix resources

by kelly＠catcorner.org

I'm trying to locate a copy of the instructions for connecting a Model 2000 keyboard to a Model 6000 computer. They were included in the swap region of one of the boot disks for Xenix 3.2.something. Does anyone have a copy of this file anywhere? I think it is called m6010.tar (or something similar). Any other Tandy Xenix resouces out there? Thanks, Kelly kb2syd

23 years, 4 months

1
0
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PDP11/44 update, dead wierd fan (35VAC, 75Hz)

by trestivo＠concentric.net

Glen S, if you have trouble reworking your fans let me know, I have some available. We're in Melbourne, Florida. See our partial list of available items at www.tarinc.com thom

23 years, 4 months

1
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0 0

Free VAX in Germany

by thilo.schmidt＠unix-ag.uni-siegen.de

Hi, There is a VAXstation II/GPX in a BA23 floorstand available in the area of Regensburg/Germany. AFAIR the QBus contains CPU, GPX-Framebuffer, RAM (don't know how much), ethernet and MFM-controller. It should be in working condition and is free for pickup (no shipping!). For further information please contact t.bartzick_NOSPAM_(a)gmx.net (remove the "_NOSPAM_"). bye Thilo

23 years, 4 months

1
0
0 0

Serial port joystick found

by ram_suganthi＠hotmail.com

Hi, I found a really cheap serial port joystick with drivers for Linux. Its the Gravis Stinger. It is basically for Laptop users, but is perfect for my project. Here is a link with a review: http://www.dansdata.com/stinger.htm Now I am one step closer to getting my stand-alone transputer workstation (and flight simulator).... Thanks for all the help, Ram _________________________________________________________________ MSN 8 helps eliminate e-mail viruses. Get 3 months FREE*. http://join.msn.com/?page=features/virus&xAPID=42&PS=47575&PI=7324&DI=7474&… http://www.hotmail.msn.com/cgi-bin/getmsg&HL=1216hotmailtaglines_virusprote…

23 years, 4 months

1
0
0 0

What is a PVK11-G/02 ????

by bob＠jfcl.com

While pawing thru the piles of scrap boards at the local junk emporium, I came across two identical boards marked "PVK11-G/02". They have the standard double high/double wide QBUS form factor and dark brown/black module handles. The only other identification I could find printed on the boards was "Made in Australia" - no manufacturer or module number. Each board contains a 6809 (!) chip, an Intel FDC chip, a CRTC chip, a row of DRAMs, a couple of EPROMS, and some other miscellaneous logic. Now, of course, the question is "What do I have"??? A quick web search for PVK11 turned up nothing. Thanks! Bob Armstrong P.S. If you can, please cc me directly with your reply - I read this list in digest form and I can't wait a whole day to find out!!!

23 years, 4 months

2
1
0 0

Sharp MZ-80B boot disk

by allain＠panix.com

> The Hummer itself is representative of everything > that is wrong in America today. > "The 6000 SUX, because bigger is better!" And what do we look like to outsiders when we run 440V Mainframes to do a P200's job? Hopefully the idea of running such things _full time_ is only a joke. John A. 1.4 Kilowatts, <50 hours a year. I ripped the phonemodem cable out of the wall but couldn't stop that last send in time. sorry.

23 years, 4 months

3
5
0 0

HP/UX 10.20

by doc＠mdrconsult.com

Hi. I've been a little slow in beginning this project, and I apologize to y'all who have been waiting patiently. My year-end slam has finally quit, and I have time to play with toys. I do have Jay West's HP/UX v10.20 media in hand, and will be imaging and testing copies this week. I have 8xx and 7xx machines available for verification; anything else is your guess. I should be able to ship the first week of January. Jay sent me a list of requests for back-up or replacement media, and I'll be contacting each of you today or tomorrow off-list. If you had asked, and don't hear from me by Tuesday, please contact me off-list. Or, if you need a replacement set of 10.20 media and didn't ask before, let me know. This is NOT a warez offer, either on Jay's part or mine. If you ask for a backup set, I will assume that you have satisfied any licensing requirements. I'll be asking for the cost of media & shipping as well - about $2.50 US per CD and about $6 per DDS tape, depending on the current price of media. There are 8 CDs and 3 4mm DDS tapes. That's based on USPS Media Mail rates. International or priority may be a little extra. Please take all further correspondence off-list, so as to keep the S/N ratio up. Happy Holidays to everybody! Doc

23 years, 4 months

2
3
0 0

Need TRSDOS 1.3 OS boot disk

by vcf＠siconic.com

For the life of me, I cannot find a good TRSDOS system disk for my TRS-80 M3. Can someone make a copy and send it to me? If so, please respond to me directly at <sellam(a)vintage.org>. Thanks!! Happy Holidays! -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

1
0
0 0

WTD: TMS2532, HN462532 or 2732 EPROMs

by pete＠dunnington.u-net.com

On Dec 22, 22:36, Tony Duell wrote: > I would have to hunt for them, but I might have a couple of new Hitachi > 462532s in the OTP (plastic) package. I bought them to repair a digital > LCR meter, and then found that the one thing that had not been 'got at' > was the EPROMs (fortunately) so I never used them. > > I have no idea if they're good, and I don't think I can easily program > them (that was to be another project if I had to re-burn the firmware for > the meter), but if I can find them, are they any use to you? If Tony can provide OTPROMs, or you can get EPROMs from BG Micro, my S3 should be able to program them. I can check the Hitachi data sheets to make sure it uses the correct parameters for OTP devices, in case they're different from "normal" EPROMs. -- Pete Peter Turnbull Network Manager University of York

23 years, 4 months

2
1
0 0

VAX 11/780 anyone with some working experience out there?

by gunther＠aurora.regenstrief.org

Hiho, folks, I have been gone from the list for several months now. Seems like eternity. All my nice machines are very depressed because they get no attention. The VAX 11/780 is shivering in the garage, cold wants to run to warm itself up, but I have not enough time to let it. I am missing some critical pieces of information, to get it booted and install BSD on the RA90 disk that I have installed via UDA50. How do I make myself a boot configuration file that starts the system >from a newly installed UDA50? Of the boot configs that I have on the RX01 disk none seems to fit. And I don't know how to show the contents of these files on the terminal such that I could learn what those boot commands files do an how to enter them manually. I have no idea where to put the Unibus address and start address and all that stuff. I'm not even sure I have set the UBA50's address switches correctly. I also have installed a second RX01 drive and I was wondering how I can tell the console to show me a @DIR of that other drive? Is there a way to switch between the default drive or to give a unit number to the typical commands (such as @DIR)? My primary goal is to make copies of some of the more critical RX01 disks that I have, since some of the disks already have errors on them I don't want to loose my last console boot disk. I have asked some of these questions before but got no response, seems like noone has an 11/780 running. I would really love to get into touch with some person here who has a VAX11/780 or knows it so well to can give directions from memory. Aren't there 11/780 people here on the list? thanks, -Gunther -- Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org Medical Information Scientist Regenstrief Institute for Health Care Adjunct Assistant Professor Indiana University School of Medicine tel:1(317)630-7960 http://aurora.regenstrief.org

23 years, 4 months

4
3
0 0

microcontroller geeking, a new list is born

by mcguire＠neurotica.com

(I suppose "geeking" could be considered a word. ;)) Hi folks. For some time now, Philips has had a mailing list intended for discussion of their 8051-architecture products. It was very poorly run, and there were many complaints about slowness, duplicate postings, etc, but it was a popular list nonetheless. A few days ago, they announced that they'd be moving the list to a web-based forum, and everyone screamed. Fortuitously, many weeks prior, I had set up a mailing list called "microcontrollers" on my mail server, but hadn't told anyone about it. Well, you can see where this is going...As expected, Philips' web forum was dead on arrival, and there are about fifty people (and counting) on my microcontrollers list. Mine isn't intended to be 8051-specific, but many of the first subscribers were refugees from the Philips list cutover, so much of the traffic has been 8051-related so far. I hope for it to be a general (but highly technical) forum for discussion of topics related to embedded systems development. Anyway, since I know several of you (especially John Wren, whose name I see all over the net in 8051 code repositories!) are into embedded stuff, I thought I'd drop a note to the classiccmp community and let you know of the list, and invite you to subscribe. It's microcontrollers(a)neurotica.com, and you can subscribe by pointing a browser at http://mail.neurotica.com:8080/mailman/listinfo/microcontrollers. -Dave -- Dave McGuire "She's a cheek pincher. I have scars." St. Petersburg, FL -Gary Nichols

23 years, 4 months

1
0
0 0

Brag: Scope probes

by tothwolf＠concentric.net

I *finally* managed to get probes for my Tektronix 2213 scopes late this last week. I still can't quite decide which project to tackle first ;P Unfortunately, most of the P6120 probes are missing the slip-on clip and ground leads, so I appear to have some more searching ahead of me. Only one probe has a ground lead, which has obviously been damaged and repaired by a previous owner. I suspect and hope that the ground leads and clips will be easier to find than the rest of the probe. Does anyone know offhand of a source for these parts? I don't expect Tektronix to have the parts still available, since they told me that they sold off all parts and spares for the 2213 series to GTE. The last time I talked to someone at GTE about 2213 parts, they were less than helpful, and suggested I either send them the scope for repairs (it just needs the plastic front panel) or go buy a new scope. -Toth

23 years, 4 months

8
10
0 0

TRS-80 Semi-Virtual Disk Drive

by eric＠rothfus.com

Many months ago, due to my frustration trying to find real floppies to run on my TRS-80's, I began to build a virtual floppy drive for it. The idea is that I can download software from the Internet (like Ira's great site) and run it on my TRS-80 without having to make a floppy. This little box (the SVD) has an RS232 port on one side, and a TRS-80 floppy edge-card connector on the other. You download a DMK image to the SVD and the TRS-80 will boot off of it. You can use the standard TRS-80 DOS tools then to make a copy of the disk...or whatever. The box is in pretty good shape now, but still not fully functional. You can boot most OS's and even many copy-protected disks. You can't, though, write to the SVD from the TRS-80. I'm looking to make this box available for all TRS-80 nuts. I don't want to make any money off of it, but would like to use any profits (beyond cost of parts) to fund sites like Ira's or other vintage computer concerns. And the more people who will buy it, the cheaper the cost of parts. I'm guessing that I can get the cost of the box down to $50 for parts, so I'm thinking that a $75 price tag would work. Soooo, I'm looking for one or two beta testers to help me make sure that I've covered all of my bases, as well as to help move the SVD forward. I need help in testing, but also writing useful software for Linux and Windows to manage the download to the SVD. Also, I'm going to need help figuring out the copy-protection of some disks. Any volunteers out there? For more information, check out the beginnings of the SVD web-site: http://www.rothfus.com/SVD . Or just e-mail me eric(a)rothfus.com. Thanks! Eric Rothfus

23 years, 4 months

2
1
0 0

hp 9920

by landerr＠infoblvd.net

Was wondering if you still had the 9920 stuff ? Do you have a keyboard as I am in need of one.... Im in USA, and will pay all shipping. Thanks Ryan

23 years, 4 months

2
1
0 0

Sharp MZ-80B boot disk

by avickers＠solutionengineers.com

Does anyone have a working boot disk for a Sharp MZ-80B? I went to use mine for the first time in a few months, and all of the disks are either reporting "Not a Master" or "Read Error". Since I *know* that at least 3 /should/ be bootable[1], there is clearly something awry with either the disks or drives. I'm going to try my spare set of drives tomorrow, but if that doesn't work then I'm stuck :( TIA [1] One of them I made myself, used it, and even labelled it "80B Boot Disk". And that reports "Not a master" now. Grrrr. :( -- Cheers, Ade. Be where it's at, B-Racing! http://b-racing.com

23 years, 4 months

19
45
0 0

Tek 213

by kerry.power＠chcc.nsw.gov.au

Thanks to all who have offered real American kindness to an Aussie who blundered into your mailing list. John L is helping me. Regards, Kerry.

23 years, 4 months

1
0
0 0

Question about TI calculator

by dmabry＠mich.com

I became the grateful recipient of a TI Programmer today. A buddy at work said "here, you like calculators, right? Better than throwing it away." Well, I said "thanks!" Now, in looking about the internet for some info on the battery styles for these things, I have a couple of questions that I cound't find the answer to. This calculator has a battery pack called BP-8 which has 2 AA ni-cads and a small circuit in it. It connects to the calculator internally with a connector that would also mechanically mate to a 9 volt battery. Now I would not expect a 9 volt battery to work where 2 AA's work, but I'm not sure. In looking at Gene's web site he says the BP-8 is also used on the TI-30 and I see TI-30's on ebay saying that they work with 9 volt batteries. I will replace the two AA's with new ones. That should make the BP-8 good again. I guess the is a roundabout way of asking for some background on the power requirements of this calculator. Unfortunately my buddy had lost the AC adapter (apparently it was an AC-9132, thanks Gene!). So I'll be looking for one of those. 5.7v, 240ma, and that small 2-pin connector. Thanks for any help. -- Dave Mabry dmabry(a)mich.com Dossin Museum Underwater Research Team NACD #2093

23 years, 4 months

4
7
0 0

ZMAIL goes live

by acme＠ao.net

Hi -- After all the whining I've done on this list concerning virii attacking the Windows-based PC I've been using for email, I'm pleased to announce that it's no longer a problem. This message was composed and mailed using the email system I've been working on -- ZMAIL. The client-side hardware consists of a Zenith Z-100 with 1 20 MB hard drive and 192 KB RAM, plus a 56 K modem. I really don't know what the host machine is, except that it's running Debian Linux. The client-side software consists of an offline email reader/writer -- ZMAILER - -- which has many of the features you'd expect: address book, reply, forward, import file, etc. (no sort capability yet) Additionally, there are utility programs which concatenate the outgoing messages into a single file, break the incoming messages out from a single file, connect to the host, and transfer the data back and forth. On the host side, I wrote programs to grab new incoming mail and pass it to the client, as well as a utility to break out individual outgoing messages from a single file and post them via SMTP. This has been a great learning experience as I had to learn enough about CP/M-86, Linux, SMTP, and the 2661 UART to get this system working. It also (IMHO) is a great use of this classic old Z-100 -- actually two of them, one at home and one at my shop. Anyway, thanks to all of you who very kindly helped me during the course of this project. Especially, thanks to Joe Rigdon, who gave me the Z-100s, and also to Tony Duell, who very patiently helped me with the basics of programming the 2661. Classic computers rule! (even at 2400 baud ;>) Later -- Glen 0/0

23 years, 4 months

1
0
0 0

Thing to check before powering up DEC VT100

by ian_primus＠yahoo.com

I just acquired a new, unused DEC VT100 terminal. I have not plugged it in yet, because I am a little weary about firing up a piece of 20 year old hardware that has never been turned on before. Something tells me that there are probably some dried up capacitors lurking in there somewhere, just waiting to blow as soon as I flip the switch. Visual inspection really can't tell me anything here, there won't be any burn marks or blown caps in something that has spent it's entire life wrapped in plastic. What areas in particular should I check? Are there any parts that are prone to failure in these terminals? Thanks in advance! Ian Primus ian_primus(a)yahoo.com PS - On a similar note, does anyone know of someplace online that I can find a VT100 keyboard? I have one here, but it's in really terrible shape - very yellow with the name of a school written on it. It works, save for the "Return" key that normally takes two presses to register, but I would like to find something in a bit better shape and with all the keys present and accounted for.

23 years, 4 months

1
0
0 0

Acorn A3000 and A3010 (was: Re: Apple disk controllers)

by pete＠dunnington.u-net.com

On Dec 20, 17:35, Philip Pemberton wrote: > Frank McConnell wrote: > > There was also a Vista 8" floppy controller for the Apple ][, built > > around the WDC 1793 I think. I have one of those in a Basis 108. > 1793? That was in the same family as the WD1770 and 1772, wasn't it? Same manufacturer but different family, and not interchangeable. > Speaking of which, has anyone got a WD1772 spare? I'd like to put a > high-density (1.6MB) disc drive in my Acorn A3000, but the instructions I've > got to upgrade it say that I've got to use a WD1772 with an 02-02 batch > code. Yes, they can run at a higher clock speed. About the only place you find them are in Atari 520s and 1024s. -- Pete Peter Turnbull Network Manager University of York

23 years, 4 months

1
0
0 0

Surge protectors or fire hazard

by dwightk.elvey＠amd.com

Hi I've just seen the third surge protector blow up and this time, it almost started a real fire. I've had two of these go up in smoke that were in metal strips. These generally make a lot of smoke but I think the metal spreads the heat enough that the fire danger is small. Now, most of the newer ones are made from plastic. The last one that just burned, started a small fire on the back side of a chest of drawers. Luckily, the chest didn't stay lit. It did charcoalize one of the feet. While these things come with a 15 amp breaker, the MOV's fail and draw something less then what is required to blow the breaker. I wonder if any of the fire prevention groups are looking into these time bombs? Dwight

23 years, 4 months

6
6
0 0

Surge protectors or fire hazard

by dwightk.elvey＠amd.com

>To: cctalk(a)classiccmp.org > >> I've just seen the third surge protector blow >>up and this time, it almost started a real fire. > > >> I wonder if any of the fire prevention groups are >>looking into these time bombs? > > >Are you buying units that are UL approved? Are you kidding, I don't think I've ever seen one without a UL sticker. > >When I blow up power strips so far all I get are sparks and a very small >puff of smoke. This is what the metal ones do ( at least the two I've seen go ). It was a plastic one that caused the troubles. When I've looked in the metal ones, I've never seen a separate fuse. I don't know what the plastic one had, it is a melted mess. Dwight > > >

23 years, 4 months

3
2
0 0

PDP11/44 update, dead wierd fan (35VAC, 75Hz)

by glenslick＠hotmail.com

Well I managed to get a M7095 module ($25 plus shipping) for the PDP11/44 I recently acquired and now I can connect to the console >>> prompt after powering it on. Plus I figured out how to execute the firmware utility on the CMD CDU-720 (anyone have docs for this board?) so it appears that the system is fairly functional. However, after a while I noticed that some of the modules seemed to be running rather hot and then I noticed that one of the three fans is not working. I pulled out the fan tray and found that I can manually spin up the two good fans with little effort but the bad fan sticks and won't spin. These fans are labeled Torin TA450 Model A3102-10 35VAC 75Hz. Anyone know where a replacement fan could be obtained? _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963

23 years, 4 months

5
5
0 0

Apple disk controllers (was: Sharp MZ-80B boot disk

by fmc＠reanimators.org

Fred Cisin (XenoSoft) wrote: > > > seeing one that had some extra diagnostics and stuff. And, of course, > > > there was the Sorrento Valley Associates board that did MFM in Apple][ > > On Thu, 19 Dec 2002, Sellam Ismail wrote: > > Ooh, juicy! Where can I get one of those? > > It's been a while since I've seen one. They were mostly pushed in the 80s > for being able to connect 8" drives! There was also a Vista 8" floppy controller for the Apple ][, built around the WDC 1793 I think. I have one of those in a Basis 108. -Frank McConnell

23 years, 4 months

2
1
0 0

CompuPro RAM board settings

by RCini＠congressfinancial.com

I pulled out my IC Master last night and indeed they are 4kx1 chips. So, the board is a 32k board. -----Original Message----- From: Eric Smith [mailto:eric@brouhaha.com] Sent: Thursday, December 19, 2002 10:20 PM To: cctalk(a)classiccmp.org Subject: Re: CompuPro RAM board settings Rich Cini wrote: > I just got a CompuPro RAM20 memory board with no manual. [...] > The memory array is 8 columns of 8 chips, type MM2147J. I'm thinking > that these are 2kx1 chips, resulting in a 16k board. They're 4K chips. Someone somewhere may have sold 2K chips (probably as half-good 4K chips), but they sure weren't very common.

23 years, 4 months

1
0
0 0

CompuPro RAM board settings

by fmc＠reanimators.org

Richard Cini wrote: > I just got a CompuPro RAM20 memory board with no manual. I'm looking > for the DIP switch settings specifically, but a copy of the manual would be > very helpful. And here I was kicking myself for forgetting to take the CompuPro Product User Manuals volumes back out to storage where they would be buried in boxes all the way at the back. My forgetfulness is your good luck tonight. > It's missing two chips...a 74LS74 at U6 and a 25LS2521 at U10. The > memory array is 8 columns of 8 chips, type MM2147J. I'm thinking that these > are 2kx1 chips, resulting in a 16k board. No, it's a 32KB board. 8 rows of 4KB each. Your "missing" ICs are explained below too. Switch 1 enables 4K blocks, one position per row. SW1-1: row 0 ON enables row; SW1-2: row 1 OFF disables row ... SW1-8: row 7 Switch 2: Positions 1-4 set the base address of the board on a 4KB boundary. SW2-1 is the least significant bit, SW2-4 is the most significant, write your desired start address in binary and then a 1 means turn the switch on and 0 means turn it off. So OFF OFF OFF OFF means the board starts at 0x0000, ON OFF OFF OFF at 0x1000, .... Position 5: ON: RAM XX is a standard/global memory OFF: RAM XX is to be used as extended address or bank select memory Position 6: ON: enables response (deselect) to PHANTOM OFF: disables response to PHANTOM Positions 7 and 8 matter if the board is being used as a bank select memory. If you want the board to come up enabled when you turn on the computer, SW2-7 should be on and SW2-8 should be off. If you want the board to come up disabled, SW2-7 should be off and SW2-8 should be on. Never leave them both on or both off. Switch 3: If you are using the board as extended address memory, put the 25LS251 in position U11 and leave positions U6 and U10 blank. (This is why you're missing a couple ICs!) Then, Switch 3 sets bits A16 through A23 of the extended address. SW3-1: address bit A16 ON = 1, SW3-2: address bit A17 OFF = 0 ... SW3-8: address bit A23 If you are using the board as a bank select memory, put the 25LS251 in position U10 (leaving U11 blank) and put a 74LS74 into position U6. Then, Switch 3 sets the bank select port address. SW3-1: port address bit A0 ON = 1, SW3-2: port address bit A1 OFF = 0 ... SW3-8: port address bit A7 Switch 4: If you are using the board as a bank select board, Switch 4 sets the data bit(s) that will enable the board when written to the bank select port. SW4-1: data bit D0 ON = 1, SW4-2: data bit D1 OFF = 0 ... SW4-8: data bit D7 Note that if more than one switch is set, then the board will be enabled if *any* bit matches. -Frank McConnell

23 years, 4 months

1
0
0 0

CompuPro RAM board settings

by rcini＠optonline.net

Hello, all: I just got a CompuPro RAM20 memory board with no manual. I'm looking for the DIP switch settings specifically, but a copy of the manual would be very helpful. It's missing two chips...a 74LS74 at U6 and a 25LS2521 at U10. The memory array is 8 columns of 8 chips, type MM2147J. I'm thinking that these are 2kx1 chips, resulting in a 16k board. Any help appreciated. Thanks. Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

23 years, 4 months

3
2
0 0

AlphaServer 2000/300 aka Jensen

by runtime＠wzrd.com

I've got one of these that I used extensively a few years ago (superceded by AS300 4/266 and then a C*q DS10) that won't do anything at all. No SRM console comes up. Problem is that about 3 years ago I removed the memory, which consisted of what it came with (DEC standard 32 MB) plus a 64 MB set which I believe was actually an IBM product. When I took the faithful 2000 out of service I put as much of its memory as I could into the AS 300 4/266, and gave the AS300 it to a client (out of state). When I went back to the 2000 to get it ready to give away to a student group that wants to run Linux on it, I realized that I'd removed all of the memory and could not remember how to populate the slots. I do remember that when I put the 64 meg in it wouldn't work at first, but Field Service told me I had to interleave the 8 mb sticks and the 16 mb sticks. So, I'd be grateful if anybody could answer these questions: 1. How are the 8 slots populated, normally? 2. Should I see the SRM even with no memory, or memory incorrectly installed? 3. Is "54-21246-FA" (2MX33) DEC memory AS2000 memory or AlphaStation 200 memory? (I've had a few of those around the shop over the years). Thanks in advance. I'm glad I found this group. I started my business with a VT103 / RX02 / RT11 v3 combo, went through Micro-11/23, then 73, then MicroVAX 3100, AS2000, AS300, and now the DS10. Don Mitchell runtime(a)wzrd.com www.run-time.com

23 years, 4 months

3
2
0 0

AlphaServer 2000/300 aka Jensen

by runtime＠wzrd.com

Thanks, Huw. It came up with 4 sticks of 4 MB 36bit memory, placed n alternate slots down from the top. I now think that it won't ever come up w/o 4 sticks of something -- I had 2 sticks of 16mb memory (the other 2 went into the 300 4/266) and I guess it just won't boot w/o 4 sticks. Thanks again. Now the kids can have it and do their Linux thing. I'll chase down some memory, or they can. Don

23 years, 4 months

3
3
0 0

Old TI analog sound chip; info?

by n8uhn＠yahoo.com

Was'nt the "spo256" a ti voice synth chip or was it a gi product. i do remember when radio shack carried the spo256 and the companion text to speech chip (cannot remember the part number for that chip) Bill. Message: 42 From: "Davison, Lee" <Lee.Davison(a)merlincommunications.com> To: "'cctalk(a)classiccmp.org'" <cctalk(a)classiccmp.org> Subject: RE: Old TI analog sound chip; info? Date: Tue, 17 Dec 2002 09:02:10 -0000 Reply-To: cctech(a)classiccmp.org > I'm looking for the documentation for the olde TI analog > sound chip; this dates back to the late 70's early 80's if > my memory serves me correctly. I don't even remember the > part number. AFAIK, it had some kind of "I2L" (I squared > el) technology or somesuch, and it was mostly analog, with > some digital control (but nothing like a DSP or midi). > Anyone recall this chip? Anyone have the datasheet for > it online or willing to scan it in? SN76477N, http://rgvac.978.org/chips/sn76477datasheet.pdf > Background: I remember playing with it a *long* time ago, > and wanted to model it in software :-) I remember it well, it was the canine gonads until the AY3-8910 and it's ilk appeared. Cheers, Lee. __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

4
4
0 0

TEK 213

by kerry.power＠chcc.nsw.gov.au

Hi, John. I got your address whilst searching for info on a TEK 213; you came up on a chat room. I bought a 213 recently at a government auction here in Australia, but it doesn't work properly. The 213s seem to be as rare as rocking-horse-droppings here, and I can't find a manual. Are you able to copy the manual you have?? If so, what would it cost?? If it's too difficult or expensive, maybe just the circuit diagrams & views of the PCBs. I'm not sure about postage, it might fit a large Global Priority Envelope at US$9. I'd appreciate any help. Regards, Kerry.

23 years, 4 months

3
2
0 0

Computers with ports coming out the front?

by vcf＠siconic.com

I am trying to identify various computers that have had their ports situated in the front of the chassis as opposed to the back. The Atari 800 would be one example (game ports in the front). Are there any other examples anyone can think of, especially where peripheral (disk, printer) or perhaps network ports are concerned? -- Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org * Old computing resources for business and academia at www.VintageTech.com *

23 years, 4 months

11
12
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Y2K/Y10K for V5.03 of RT-11

by mbg＠TheWorld.com

Okay, that was supposed to have been private... (sometimes the reply to list is a pain... but it's my own fault). Megan

23 years, 4 months

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Nice Find today and some good books

by jrkeys＠concentric.net

Found a Micro Genius IQ-501 Computer Game console and one controller/joystick for it at a thrift. It's a NES/Famicom Pirate Clone. You can see it a this site page down to the bottom: http://www.gamersgraveyard.com/repository/nes/pirate/pirate-clones-A-M.html Also got a couple books in from Amazon; the one called High Score! the illustrated history of electronic games is a good source of info and pictures of old consoles. The other book called "the ULTIMATE History of Video Games" I have not started yet. My copy of Collectible Microcomputers came by mail today and I hope to start reading it soon.

23 years, 4 months

2
3
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Wanted: Fairchild uA79MG voltage regulator

by tothwolf＠concentric.net

I've been looking for a replacement uA79MG negative voltage regulator for awhile, but so far haven't been able to find one. It is for a custom power supply for an embedded system made in the early 1980s. Fairchild's part number for the device is uA79MGU1C, which they call a 'Power Watt' package. It actually looks like a TO-220, but has 4 leads. The regulator bolts to a heat sink on the supply's board. I need at least one of these parts, but could use a spare or two if someone has a bunch hiding away in their parts cabinet. I could also use a couple spare uA78MG (uA78MGU1C) regulators too, but they would just be put away as spares for these power supplies. -Toth

23 years, 4 months

1
0
0 0

SCSI 9-Track tape under VMS..?

by spector＠zeitgeist.com

From the its been way too long to remember department... I just put an old HP SCSI 9-track tape drive on my 4000/400 running Vax/VMS 5.2... Does VMS probe SCSI devices at boot time? Is there a way to access this drive without re-generating the system..? David ------------------------------------------------------------------------ - David HM Spector spector(a)zeitgeist.com software architecture - network/security consultation technical due diligence - technology planning/analysis Office:(631)261-5013 Cell: (631)431-5756

23 years, 4 months

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IBM 5120

by computermuseum＠pandora.be

Hi, I'm rather new inhere. I've got into my garage an IBM 5120 machine with his printer and an external diskette unit with 8 inch flops. I've got also all documentation and technical documentation of it together with all operation disks. It's running on APL (A Program Language) and it is working. Does someone know if this is a machine that is worth something? Please advise... it's rather huge and heavy and it is standing now in my garage which is rather moisty and cold..., mayby I have to move it somewhere else if it's worth it... Michel Wouters

23 years, 4 months

7
8
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PDP11/44 update, dead wierd fan (35VAC, 75Hz)

by glenslick＠hotmail.com

I found this thread from 4 years ago. I'll give it a try... http://www.classiccmp.org/mail-archive/classiccmp/1998-09/0953.html >From: "R. D. Davis" <rdd(a)rddavis.org> >Reply-To: cctalk(a)classiccmp.org >To: cctalk(a)classiccmp.org >Subject: Re: PDP11/44 update, dead wierd fan (35VAC, 75Hz) >Date: Wed, 18 Dec 2002 22:06:28 -0500 > >What you don't need is a replacement fan. :-) I had a similar problem >when I got my 11/44 several years ago; Tony Duell kindly instructed me >on the _proper_ way to solve this problem. _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail

23 years, 4 months

1
0
0 0

computer audio tape formats

by n8uhn＠yahoo.com

I seem to remember that eather "radio electronics" or "rainbow" magazine had an article on how to build a computer audio tape conditioner. it was for the coco. On Tuesday 17 December 2002 9:50 pm, tim lindner wrote: > I am looking for information regarding how various computers wrote > information to audio tapes. > > For example, the Tandy Color Computer wrote ones and zeros to audio tape > in the following format: > > 'one bit': one sinusoidal cycle @ 2400 Hertz. > 'zero bit': one sinusoidal cycle @ 1200 Hertz. > > The bit rate is variable on a CoCo tape. But averages to about 1500 bits > per second. > > I am contemplating creating an audio tape anaylzer to help me recover > some data. I would like to make the program useful to thoes outside the > Color Computer community. But first I need to understand all of the > different methods used to put data on audio tape. --__--__-- __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

1
0
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System/23 Support Disks

by n8uhn＠yahoo.com

Chris, are you talking about the sys/32? i have never heard of the sys/23. i do have some sys/32 disks - not the ones you mentioned, though. i still have the manuals (tech binders) with the schematics and trouble shooting stuff and i may have the sys/32 ssp and a few other disks around here somewhere. i still have two sys 34's and one sys/36 in my collection - one of the 34's and the 36 are rare config's - they both have extended chassi's and extra hard (disk) drives in them. the 34 has 2 hd's and the 36 has three hd's. it's really interesting that the 34 has 8 inches of chassi added to it and the 36 has three feet of chassi added to it. i do have alot of sys/36 software and some sys/34 software. if you do have a sys/32 - you can have the manuals and software - just arrange shipping. i no longer have a sys/32 and no longer need the stuff. Bill (n8uhn at yahoo dot com) __________________________________________________ Do you Yahoo!? Yahoo! Mail Plus - Powerful. Affordable. Sign up now. http://mailplus.yahoo.com

23 years, 4 months

5
5
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Sharp MZ-80B boot disk

by SUPRDAVE＠aol.com

In a message dated 12/18/2002 7:53:39 PM Eastern Standard Time, cisin(a)xenosoft.com writes: << > > And it's usually NOT a good idea to put your LAST boot disk into the > > drive! Although normally not a problem with most "normal" drives, there > > have been SOME (most notably Apple ][) that were capable of malfuntioning > > in ways that would cause them to erase/wipe/damage/ diskettes even when > > write-protected! > > What an amazing feature! On Wed, 18 Dec 2002, Tony Duell wrote: > _Any_ drive if malfucntioning could have write-gate stuck on and also > ignore the write protect line. After all, those signals are combined in > the logic circuitry somehow, and those gates could malfunction. Ooops! I meant to say that on the Apple ][ a malfunctiong disk controller could override write protect, even on a non-malfunctioning drive. THAT is the special unique feature. >> I had that happen once! Ruined a number of my floppies until I finally figured it out. Bought one from Jameco for either $50 or $80 way back in the late 1980s. -- Antique Computer Virtual Museum www.nothingtodo.org

23 years, 4 months

1
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