test-drb

test-drb@ccmp.vtda.org

101090 discussions

74S409 (was Re: Anyone have a data sheet on the MC3242?)

by Lee.Davison＠merlincommunications.com

> [Driving DRAM] >> The number of populated banks affected the >> values of the resistors. > You should have split the resistance between banks. I was not the engineer. I was the stock boy. This was a long time ago. The engineer should have split the resistance between banks. 8^)= Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

23 years, 10 months

CI networking, need some help debugging ...

by gunther＠aurora.regenstrief.org

Hi, I have now the two VAX6450s with CIBCA and connected through the star coupler. I was eager to see them talk IP through the CI but unfortunately it doesn't work. I'm under Ultrix 4.5 and I use ifconfig scs0 inet 192.168.17.1 netmask 255.255.255.0 on the one machine and ifconfig scs0 inet 192.168.17.2 netmask 255.255.255.0 on the other machine. If I check the status with just ifconfig scs0 It says it's up and fine. But ping self doesn't work and ping each other doesn't work either. From reading the scs man page, it mumbles something about host numbers having to be between 1 and 15. But I have no clue what they mean. I don't know my CI node numbers either. I'm wondering if I should know those and configure them somehow. I also wonder if this SCS IP has some arp? Would be really cool to have tcpdump for Ultrix. What's the best way to step by step get a CI system debugged? 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, 10 months

Festival of Inappropriate Technology??

by wh.sudbrink＠verizon.net

This event seemed sort-of on topic... look here: http://www.xcom2002.com/ Did any of the UK list members attend this? Any reports?

23 years, 10 months

Anyone have a data sheet on the MC3242?

by erd_6502＠yahoo.com

I'm stripping interesting parts off of these stat mux boards that I recently got around the corner - lots of socketed 6502s and 65c02s, 2532s and the like. Many of the boards have a 24-pin DIP MC3242 which I can find little about - Google only gives me one meaningful hit that it's a "Motorola Mux and Refresh". I'm trying to determine if it's worth desoldering any. I'm currently using a hot-air desolderer, so it's not a _lot_ of effort, but, for example, I'm not bothering to pull the popcorn TTL parts, just memory and "interesting" parts. So... anyone have any information on the MC3242 and why I might want to save a couple dozen of them? -ethan __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com

23 years, 10 months

[OT] measuring DC wall wart

by acme_ent＠bellsouth.net

> From: Tony Duell <ard(a)p850ug1.demon.co.uk> > Not everyone has 2N3055s lying about. They don't?!? Glen 0/0

23 years, 10 months

OT, private response: Need Windows XP help

by foo＠siconic.com

Is there anyone here fairly expert at Windows XP installations that I can bounce a few questions off of? Please reply private to <sellam(a)vintage.org>. Thanks! 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, 10 months

Test results of SCSI devices on MicroVAX 3100

by bob_lafleur＠technologist.com

I've accumulated a stack of external SCSI-2 devices that I thought I'd try out on my MicroVAX 3100. All devices show during a SCSI bus scan >from the console prompt, and as devices when VMS 7.3 was booted from the internal hard drive. But they worked with varrying degress of success. Here are the results: "GENERIC CD-R CRD-800S" - This is an 8x CD-R (not CD-RW) drive; it reports as "GENERIC" but it really is a Sanyo CD-R CRD-800S. I've even updated it with the Sanyo firmware and it still reports as "GENERIC". I tried to boot the mini-VMS in SYS1 of my VMS 7.3 CD-ROM. Boot failre right away. Booted VMS from the hard drive, and tried to mount a CD-ROM, and I got invalid media format. "Yamaha CD-R 400c" - This is a 4x CD-R drive. I tried to boot the mini-VMS and it started to boot, until after it asked for the date & time, then it went into mount-verificiation mode, and just hung. I booted VMS from the hard drive, and tried to mount a CD-ROM disc and got the same message as with the CRD-800S - invalid media format. "Toshiba XM-3401TA" - Just a plain old CD-ROM drive, I think it's a 2x. I could boot the mini-VMS in SYS1 from it, and when I booted VMS from my hard drive, I could mount CD-ROM discs fine. No problems with operation at all. "MATSHITA LF-3000" - This is a 128MB MO (magneto-optical) drive, it's in a box badged "Optical Access International" and I originally purchased it for my Mac - it has always worked fine on the Mac. From the console prompt, a TEST F1 (SCSI OPTION Utilities) device scan showed it with a device name of JK (JKB400 in my specific situation) and the device type shows as "OPTDISK" but when I booted VMS from the hard drive it showed as a DKB400 device. I tried it INIT a disk, and got a "media is offline" error. I've had similar results trying to make this drive work on the PC - it is recognized fine, but when I try to use it, it seems to go away. Maybe there is newer firmware for it that corrects the problem, but it isn't a major issue at this point. I do find it strange that the console shows it as a JK device, but VMS shows it as a DK device. "TK50Z-GA" - Of course, it worked without a problem. Has anyone tried a Travan 4 SCSI tape drive? Specifically, the HP SureStore T4? - Bob

23 years, 10 months

Mounting CD/tape devices inside MicroVAX 3100-90

by bob_lafleur＠technologist.com

I'm not really sure how the RRD43 that's in my MicroVAX 3100 is attached... There appears to be a metal bracket that's part of the system, with screws going into the sides of the RRD43... Or is that an integral part of the RRD43? I have space to mount a second drive, and I might like to put a tape drive in. But I don't see where I would screw it in... Do I need some sort of mounting bracket? If so, does anyone have any spares?? Thanks for any tips. - Bob

23 years, 10 months

[OT]: anti-spam for classiccmp members

by philpem＠dsl.pipex.com

Hi, Just wondering - are there any measures in place on this list to stop spammers harvesting our e-mail addresses from the list archive? How about locking the archives and only allowing access to list members (or just set the user and password to "classiccmp") Later. -- Phil. philpem(a)dsl.pipex.com http://www.philpem.dsl.pipex.com/

23 years, 10 months

RA82 belt tension adjustment, how?

by gunther＠aurora.regenstrief.org

Hi, I just tried to spin up my RA82. Problem is the motor starts for a moment and then stops. Fault light comes on. Pressing the fault button and "B" flashes. I assume that my RUN button light is not working, so then the indicator pattern indicates a spin error. How can I fix that? I suppose it is the belt tension. I only have the RA81 maintenance manual, and although they are pretty similar, the belt tension stuff in the RA82 is not at all like what is described in the RA81 maintenance manual. Someone here knows how that is done? Or what else could be causing this spin fault? (I see that the motor starts but it is stopped within a second after it started.) 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, 10 months

can you check the behavior of your KDB50 during booting?

by gunther＠aurora.regenstrief.org

Hi, I am having a problem around the KDB50 of one of my VAX6k's and need your help. If you boot from a KDB50, could you check if the yellow indicator LEDs turn OFF for the moment that the drive is first accessed? I am getting the error, device not accessible. I could boot from that same path before until the moment that I connected another RA92 and an RA81 and I switched the drive unit numbers of two of my RA90s around. After I swapped those unit numbers I can't get any of the drives to boot any more. My fear is that somehow the KDB50 is dead. So, next time you bood your VAX through a KDB50, plese watch the yellow indicator LEDs closely. Mine go on in the early initialization process and stay on throughout the self test. Then when the boot sequence is entered those lights go off for a few seconds, the red FAULT light goes on at the console. After one or two seconds the yellow indicator LEDs go back on and FAULT light clears. Then the typical blink pattern of the little red LED is engaged, but at that time the VAX is already halted with that I/O error. 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, 10 months

[OT] measuring DC wall wart

by mythtech＠mac.com

>It does sound a _little_ high, but it might be OK. Try loading it (A 100 >Ohm wirewound resistor would do, for example). See if that brings the >voltage down to nearer 9V. I tried a 100k Ohm since I didn't have a 100 Ohm, no effect. I don't have a bulb or anything handy to try with that. I think I am going to dig out the modem it goes to, and test the voltage with it hooked to that. That will at least give it real use load (the modem powers up just fine, it just fails to respond to all AT commands except for getting the firmware, and it won't attempt to go off hook or dial... I'm not 100% convinced the modem is really "dead" so much as it just doesn't want to co-operate). Thanks to all those that responded... I knew I could get some good answers here. -chris <http://www.mythtech.net>

23 years, 10 months

[CCTECH] New Finds This Week

by jrkeys＠concentric.net

Well its been a little slow this week but here goes: 1. A IBM 3745 Communication Controller with keyboard, monitor (IBM 3151), various cables for it, and a Diagnostic Descriptions manual. Cost was $15 total. 2. 4-Mac SE/30's; 6-Mac Mac SE FDHD's; 3-Mac Classic's; and 1-Mac SE. These I will be trading or selling for $2 each. I wanted a Mac LC 630 that was part of the lot and had to take it all. 3. Toshiba T1000 not test yet. Cost $1 4. Xscribe XEC5 cpu only no power adapter. It was free. 5. Apple IIgs WOZ limited edition. It was free 6. PowerPC 5200/75LC and 8500/120. $25 for both 7. IBM 2.02 Technical Reference manual for the XT. 8. "Bowling" Interchangeable cartridge for the Microvision in the box. 30 cents at a thrift. 9. Atari 1027 printer and 1050 FDD were $1.91 each at thrift. 10. HP-85 Owners and programming manual. $1 11. IBM 9533 model DB7 computer 12. Plastic box with diskettes from Xerox for the 6060 family of computers. _______________________________________________ cctech mailing list cctech(a)classiccmp.org http://www.classiccmp.org/mailman/listinfo/cctech

23 years, 10 months

new finds :-)

by rigdonj＠cfl.rr.com

Went to a small local hamfest this morning and came home with a Z-80 trainer made by E&L Instruments (remember the Bugbooks?), a Gunnplexer cookbook, a HP-15C with manual, HP-18C with manual and four HP Solutions books, and a HeathKit Most Accurate Clock II with manuals (receives time code from WWV and sets itself automaticly. Has LED display and serial link to connect to a computer). Passed up a TRUCK LOAD of Amigas and other Commodore stuff for $10. Not bad for an hour of looking :-) Does anyone have the manual for the E&L Z-80 trainer? It's mounted in a black plasic case and is marked "The Fox" and also model MT-80Z. It has two circuit boards, a bread boarding area, a Std Bus expansion connector, a keypad and six digit LED display. Joe

23 years, 10 months

I hate Radio Shack

by mythtech＠mac.com

>Those kids get paid minimum wage and >know minimum when it comes to anything other than cell phones and >stereos. Last I knew around here... they get paid on commision with the Manager being the only one with an hourly pay. And that goes a LONG ways to explain why they don't *want* to care about the little $1 and $2 components, but would rather sign you to a DirecTV or Cell Phone, or MSN service. It is the only way for them to make any real money out of the place. At least the local Rat Shack that I go to isn't too bad to deal with service wise. The reason being is these guys like I said above, don't care about the little parts, and really don't want to waste time helping someone with them. That is time wasted that they could be trying to convince someone to buy a high priced item or service or anything that might make their weekly pay check come close to that of a McD's burger flipper. That works out in my favor. I can walk in to the store, head right to the misc parts section, and watch every sales goon turn around and walk away >from me. From them, NO help is GOOD help. -chris <http://www.mythtech.net>

23 years, 10 months

Corvus Omninet... TRS-80?

by florit＠unixville.com

I have a TRS-80 I got from Weird Stuffwhile I was living in Silicon Valley. It was the last few left from what aparently was a school 'Please take these dinos away' disposal. Its a model IV, but has no drives. I was tempted to gut the case, create some sort of adapter for the keyboard to connect it to an internal PC mobo and replace the monitor as well. Needless to say I never got around to it. Its in working condition, (turns on, goes into basic, keyboard works) but the case is showing its age and exposure to the elements. While I was in the process of taking it apart to clean it up, I saw two butterfly nuts with a piece of what seemed a cut off telephone cable, 2 leads. I asked on the trs80 newgroup and they mentioned that it could be a now little known networking card for a system, Corvus Omninet. This would explain the diskless condition of the TRS-80, as it would load up its files over the network to do anything interesting besides load up the basic rom. Since I didn't hack the TRS80 into the abomination I was thinking of, I would like to sell it (cheap! take it off my hands! I've too many computers) to someone more interested in it; mail me offlist: florit @t unixville.com Anyone have a server for this setup? Definitely cool on the unknown factor. Louis PS: I also run The Unofficial Timex Sinclair 2068 website at http://www.timexsinclair.org

23 years, 10 months

China bans toxic American computer junk

by rigdonj＠cfl.rr.com

At 05:42 PM 6/7/02 -0500, you wrote: >Didn't see anyone else mention this story, though it isn't exactly >front-page news... > >China bans toxic American computer junk: > http://www.guardian.co.uk/international/story/0,3604,725756,00.html > >Maybe this will help save just a few systems... > >-Toth Yes, but I fear we'll soon be swimming in computer scrap. The amount of scrap that we've been exporting is tremendous. Joe

23 years, 10 months

[CCTECH] Interesting tidbit on 6502

by pete＠dunnington.u-net.com

On Jun 7, 13:05, Richard Erlacher wrote: > You may be confused about this. I don't know of a single NMOS 6502 that > didn't adhere to the MOS-technology instruction set. There's no telling > whether that included the undocumented opcodes, but since Synertek and > Rockwell used the MOS mask set, I suspect there was no difference. The later > Synertek parts may have been different since they shrank the die and got a bit > more speed, offering a 4 MHz 6502-C, which was an NMOS part and worked > perfectly in NMOS-targeted systems that didn't work with the later CMOS parts. There certainly were differences between the sets of undocumneted opcodes >from different manufacturers of 2MHz 6502A parts. I remember one or two "clever" bits of software that failed on some BBC Micros for that very reason. Sean is absolutely right to avoid undocumented codes. -- Pete Peter Turnbull Network Manager University of York

23 years, 10 months

[CCTECH] An interesting link...

by rschaefe＠gcfn.org

http://www.netbsd.org/Changes/#port-pdp10 Dunno anything about it, but it should be on topic... Bob _______________________________________________ cctech mailing list cctech(a)classiccmp.org http://www.classiccmp.org/mailman/listinfo/cctech

23 years, 10 months

MC6800 Datasheet

by Lee.Davison＠merlincommunications.com

Richard, Does anyone have a PDF copy of the Motorola 6800 chip datasheet? I downloaded a copy from somewhere yesterday and the strangest thing happens. When viewing the PDF, it shows on the screen as a positive image but when printing, it prints as a negative. On the print page make sure 'Print as image' is ticked. This should fix the -ve image. Lee. ---------------------------------------------------------------------------- ---- This email is intended only for the above named addressee(s). The information contained in this email may contain information which is confidential. The views expressed in this email are personal to the sender and do not in any way reflect the views of the company. If you have received this email and you are not a named addressee please delete it from your system and contact Merlin Communications International IT Department on +44 20 7344 5888. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

23 years, 10 months

[CCTECH] Interesting tidbit on 6502

by dwightk.elvey＠amd.com

>From: ard(a)p850ug1.demon.co.uk > >> >Not on the 6800 but I believe some FORTH chips have that problem. > >Incidentally, some Xilinx FPGAs will spectacularly overheat if fed bogus >configuration data. You can get 2 internal buffers driving the same line >in oposite directions. The CAD software is supposed to never generate >such a configuration file, of course, but if there's a bug in the >software, or the data is corrupted on download to the chip, it can >happen. Don't ask how I found that out. > > >> Instructions that would continuously increment the address >> are vary useful for debugging address decoding problems. > >True... > >> On an 8080, about the only useful sequence is to have >> a pop and jmp, using 4 locations. > >What's wrong with forcing a NOP (00) onto the databus. That should make Hi This does require that you have full control of the bus. I have used the 00H as well as the 0FFH. When you have a partially working bus, running code is prefered because simply pulling the ROM may not always work Some broken device may inject and instruction and break the loop. It is good to have all three methods of running addresses in your tool box. It is too bad that the simple 00 and 0FFH codes don't work for all processors, like the 8080's. Dwight >the PC increment from 0 to 0xFF. Or force RST38 (0xFF) onto the databus. >That will cause repeated fetches from location 0x38 with memory writes of >39 00 to every 16 bit word of memory in decreasing address order -- it's >pushing the return address (0x38+1 onto the stack, of course). Both >instructions are easy to force and have very recognisable effects on the >bus lines. > >One of the tests for the TRS80 Model 1 (Z80 based) is to pull the ROMs. >The databus is pulled high, so the CPU should execute RST38s. It writes >the return address to the video memory (as well as user RAM, of course), >giving a display of alternate '9's (0x39) and '@'s (0x00 -- the TRS-80 >video display circuit ignores bit 6 IIRC). > >-tony > >

23 years, 10 months

[OT] measuring DC wall wart

by mythtech＠mac.com

>Hey, you know what? I missed the beginning of this thread, but this is >exactly the sort of behavior you get from a modem which requires a 9V AC >power supply, when you run it with a 9V _DC_ supply. Interesting. The wall wart I used with the modem is the one that was in the box along with all the other assorted parts. The wart has a label marking it as the same manufacturer as the modem, so I didn't even think about the fact that it might not be the RIGHT wart. Maybe it is really >from a different model modem. I didn't persue the issue much since the modem is a Global Village for a Mac. They are great modems... IF you have the right software. Without it, they tend to be a pain in the ass. Since I don't have the exact software that shipped with this model, and since the firmware claims it is a French-Canadian modem, and I only have US-English software... I didn't waste much time working on it. But maybe I will do a little more research and see if it really should have an AC adaptor, not a DC one. Thanks -chris <http://www.mythtech.net>

23 years, 10 months

VMS doesn't recognize all physical memory?

by carlos_murillo＠epm.net.co

Hello everyone; I have noticed that OpenVMS 7.2 doesn't seem to recognize all of the physical memory in my vaxstation 4000/60; I am sure that I have 32 MB (8MB mainboard + 6 x 4MB modules) and in fact it is recognized by the prom: KR46-A V1.1-31E-V4.0 08-00-2B-2A-F8-AB 32MB ||||||||||||||||||||||||||||||||||||||| OK 85 RESTART SYS >>> >>> show config KR46-A V1.1-31E-V4.0 08-00-2B-2A-F8-AB 32MB DEVNBR DEVNAM INFO ------ -------- ------------------------------- 1 NVR OK 2 LCG OK HR - 8PLN FB - V1.1 3 DZ OK 4 CACHE OK 5 MEM OK 32MB = SY=8MB, S0/1=8MB, S2/3=8MB, S4/5=8MB 6 FPU OK 7 IT OK 8 SYS OK 9 NI OK 10 SCSI OK 0-ST31200 5-TZ30 6-INITR 7-CD-ROM 11 AUD OK >>> Similarly, the TEST 100 command tests all of the hardware and there aren't any errors. So, as far as the diagnostics in the Prom are concerned, the system has 32MB of memory and it tests OK. But, this is what I get under OpenVMS: $ show memory System Memory Resources on 6-JUN-2000 16:25:53.84 Physical Memory Usage (pages): Total Free In Use Modified Main Memory (16.00Mb) 32768 8459 22775 1534 Virtual I/O Cache Usage (pages): Total Free In Use Maximum Cache Memory 11 0 11 51649 Slot Usage (slots): Total Free Resident Swapped Process Entry Slots 48 25 21 2 Balance Set Slots 43 23 19 1 Dynamic Memory Usage (bytes): Total Free In Use Largest Nonpaged Dynamic Memory 1359360 103552 1255808 12480 Paged Dynamic Memory 717824 435488 282336 434448 Paging File Usage (pages): Free Reservable Total DISK$VAX4000SYS:[SYS0.SYSEXE]SWAPFILE.SYS 6240 6240 7200 DISK$VAX4000SYS:[SYS0.SYSEXE]PAGEFILE.SYS 55557 15536 65536 Of the physical pages in use, 10827 pages are permanently allocated to OpenVMS. So, what is happening here? Does anybody have some suggestions as to why OpenVMS doesn't see/want to use the remaining 16MB? Best regards,, Carlos. ________________________________________ Acceso r?pido a Internet con Epm.Net http://www.epm.net.co

23 years, 10 months

Gold in IBM KB's ?

by mythtech＠mac.com

>Two 84-key AT keyboards sold on eBay yesterday for $122.50 and $127.50. >Now I know how I'm going to pay the house note next month. Cripes, and I just gave away two of them to go with the two ATs and matching CGA monitors I gave away. Good thing I still have a supply of them I can sell -chris <http://www.mythtech.net>

23 years, 10 months

[OT] measuring DC wall wart

by mythtech＠mac.com

This is off topic, since the wall wart is only a few years old, but there are some great electrical people here, so I am asking because I know someone will know the answer. I have a wall wart to a modem. I got the modem and wart in a box of used stuff (ooh, some of which was more than 10 years old, so at least there is a reference to on-topicness). The modem failed to work from the day I got it. Today, someone that has the same modem asked if I had a power supply they could have. I planned to give them mine, since I have no real use for it. But before I mailed it to them, a voice went off in my head telling me to stick it on a meter first. It's label says it is a 9vDC, 400mA Pos-tip wart. But when I hook it up to a meter, I get 15v DC off it. That seems a little high, even for something under no load. Should I safely assume the wart is no good, and point the person elsewhere (Rat Shack sells a usuable unit for only about $14, so it isn't like the person has no other choice). Or is it normal for a 9v supply to put out 15 volts? Any that I have measured in the past have not been THAT far off (I was expecting to maybe get 10 or 12 volts, but not 15). If this thing has been pumping too much voltage, that might explain the dead modem I have (or the modem could have been used as a soccer ball, who knows, it was dead when I got it). I just don't want to send the person a bad supply, and have them fry their modem when they try to use it. -chris <http://www.mythtech.net>

23 years, 10 months

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