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

by philpem＠btinternet.com

Hi, I've just acquired a nice little Sharp plotter/printer (model CE-515P). It seems to be in reasonably good condition and it works (to some extent). Only problem is, I don't have a manual. Does anyone here know what the control codes for this little thing are? I also need the pinouts for the RS232C port on the back. Also, does anyone know where to get pens and plotter rolls for this thing? -- Phil. http://www.philpem.f9.co.uk/ philpem(a)bigfoot.com

25 years, 1 month

3
2
0 0

EACA Color Genie

by witchy＠vorbis.demon.co.uk

Hi folks, I thought there was only 1 version of this machine going by what I'd seen in magazines and the like, and I thought I had it already, but today I picked up another one in slightly better condition that has a VU meter similar to that found on the Video Genie I for tape loading purposes. I'm going to do a search now and a like-for-like comparison on tuesday (got to work my arse off tomorrow getting the cloakroom ready for the plasterers) but if anyone's got any insight that'd be smart. cheers! adrian/witchy www.binarydinosaurs.co.uk - the Online Computer Museum 0:OK, 0:1

25 years, 1 month

1
0
0 0

HP 9000 DOS sw ?

by jarkko.teppo＠er-grp.com

Hello all! I was going through my old and embarassing posts on groups.google.com and found out/remembered that I have an HP 98286 DIO-I card for HP 9000 series 300. It has a 286 processor but unfortunately I don't have the software necessary to use it.. if anyone has the software I'd really like to know as I want to try some older games like Leisuresuit Larry on HP-UX :) (a nice game btw, I know of at least PC, Amiga and Mac versions. Might be more) -- jht

25 years, 1 month

1
0
0 0

just outta curiosity

by Demon02554＠aol.com

just wondering....am i the only kid on this list? Robert Cobbins

25 years, 1 month

52
166
0 0

Someone missing a TI99/4?

by chris＠mainecoon.com

This is a little odd, but I seem to be in possession of a TI99/4 that was intended for someone else. Sometime the week-before-last a box turned up from Canada, addressed to me, with an import tag reading "PDP DEC Books & Parts", but which in fact contained a 99/4. I recognized the return address as being the guy that I purchased some stuff from some time back on eBay, so I sent a message asking where this thing was _really_ supposed to go and offering to help it on its way. The message didn't bounce, nor has there been a reply. I'm better that the odds are at least even that someone on the list did a deal to get this box. To that end, if someone can tell me what was included (there's more than a 99/4 in the box) and who the deal was done with I'll accept that they're the counterparty to the deal and send it on its way. Man, the things we do to preserve Good Collecting Karma :-) Cheers, Chris. -- Chris Kennedy chris(a)mainecoon.com http://www.mainecoon.com PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97

25 years, 1 month

3
2
0 0

OT: Altair32: C arrays and pointers

by rcini＠optonline.net

Hello, all: Futher errors have been found in the Altair32 8080 processor emulator code by some eagle-eyed users. So, I'm trying to fix them, but my lack of depth in C programming has become evident. So, I'd like to enlist some help again. Here's the code (cut and paste; written by Claus Giloi): uchar regs[8] ; // A, F, B, C, D, E, H, L - actual storage order! // 0 1 2 3 4 5 6 7 // pointer array for sss, ddd addressing uchar * b_regs[8]= {&regs[2],&regs[3],&regs[4],&regs[5],&regs[6],&regs[7],&dummy,&regs[0]} ; // B C D E H L trap! ACC // pointer array for rp addressing ushort * w_regs[4] = { (ushort *)&regs[2], (ushort *)&regs[4], (ushort *)&regs[6], &SP } ; // B D H SP As you 8080 users know, several instructions operate on register pairs instead of individual registers. The instruction that began this odyssey was INX H. The INX B/D/H instructions increment the BC, DE, HL pairs. INX SP works. B/D/H don't. While the individual register halves reflect the proper values, the word registers are reversed. I guess it's because when accessing a word value in an array, the CRT code swaps the high-order and low-order bytes. So, I used the following code, which produces the desired result but is what I can only assume to be the sledgehammer way of doing what I want (lots of snipping): // u is the opcode and switch ((u&RP_MASK)>>4){ // RP_MASK isolates register pairs case 2: //HL tmpH = *pH ; // pointer to H storage tmpL = tmpL2 = *pL ; tmpL++; if (((tmpL & 0xff) == 0) && (tmpL2 == 0xff)) tmpH++ ; *pH = tmpH ; // save regs *pL = tmpL ; break ; // other cases omitted. } What I do is manually manipulate the byte registers (watching for rollover) to get the desired result, totally skipping the w_regs array. Bogus I admit, but it works. I can only imagine that there is a better way to do this. So, I'm asking for help finding the better way. Thanks again. Rich Rich Cini Collector of classic computers Build Master for the Altair32 Emulation Project Web site: http://highgate.comm.sfu.ca/~rcini/classiccmp/ /************************************************************/

25 years, 1 month

3
2
0 0

HP 300

by jarkko.teppo＠er-grp.com

(..must...try...resending...) Quoting Iggy Drougge <optimus(a)canit.se>: > > PCI runs on shared interrupts and seems fast enough to me. Well, DIO-II maxes out at about 5MB/s :) > > HPIB disks? Can't say that I've seen a single one in my entire life. They're lovely. I'm just saving them for those /500-machines as they can only use HP-IB disks. > > >Depends if you want to use it for anything useful or not. > > I really can't imagine either system doing anything useful, since I'm > essentially a UNIX hater, so that is of secondary importance. I just > can't > deal with HP-UX 10.something on the 822, it's so dreadfully slow, and > then > it's got binaries cluttered all over /etc for some very odd reason. Well, gimme the 822 if it bothers you that much :-). Anyway, it's probably possible to run HP-BASIC on it too but if I had to choose between HP-UX and NetBSD I'd take NetBSD. I do have HP-UX on some machines tough. > But then all that would require is a new crystal, right? There are some conflicting rumors on the 385. Basically HP-UX and NetBSD recognise the machine (380/385) via MMU_ID. This changes if you move one of the wait-state jumpers near the processor (marked 33/25 or something). I have a 25MHz 385.. Anyway, some reports say that a real 385 would be 33MHz and some say 40MHz. > I don't suppose HP have got any hobbyist programme? Not that I know of. You can shell out couple of thousand bucks on 9.1 or contact someone with a lot of different HP-UX versions on CD or 9144 tape. -- jht ----- End forwarded message ----- -- jht

25 years, 1 month

1
0
0 0

VME532, GNX Unix and want for a Maxtor XT-4175E

by ken＠seefried.com

I need to find a working Maxtor XT-4175E disk drive. I've had the wonderful fortune to have picked up a Heurikon VME532 (NS32532 based) development system. This is probably the fastest single-processor 32532 system produced (Encore MultiMax was of course faster, with more processors). The bonus is that this system is running GNX 3.1 with the National Semiconductor cc compiler, along with a bunch of other development tools (and source code for odd ns32k bits). Unfortunately, I don't have the distribution media, so a disk crash would be fatal, wiping out an almost unique machine. GNX is running on a Maxtor XT-4175E 175MB ESDI drive, and if I could find another one, I should be able to 'dd' a bootable backup. Does anyone on the list have one of these drives that they'd be willing to part with, or knows where I can buy one, in order for me to have a working backup of this system? P.S. - Of course, if someone has GNX distribution media, I'd love to hear >from you! P.P.S. - If anyone has any Heurikon VME532 bits, or GNX knowledge, I'd love to hear from you as well. P.P.P.S. - How long has it been since I ran a Unix (a 32-bit Unix, no less) that could fit, with development system, et. al., on a 175MB drive with room to spare (113MB used). Ken Seefried, CISSP

25 years, 1 month

4
3
0 0

My IBM 1130

by bakcc＠bigoakhill.com

I've put some new info about the 1130 on the website, like sizes (big) and weights (heavy). Also, I'm accepting offers on it until June 15th. We'll see what happens... (www.bigoakhill.com, click on ForSale). -Bruce Keller P.S. I'll be off-web most of next week, so I won't be able to respond to emails until Friday.

25 years, 1 month

2
1
0 0

Slicing open the top of a 48T02 Sun Sparc chip to replace b

by ajp166＠bellatlantic.net

> From: Geoff Reed <geoffr(a)zipcon.net> > I downloaded the datasheet for the 48t02's, i think i may have a handful of > 32.768 xtals here so I'm looking ar chopping the tops off the bad chips I > have and taking protoboard and refitting them with a new xtal and > batteryholder package that can take a replacable lithium cell. :) I > sacrificed one yesterday to the great dremel in the sky to see how the top > was put together... Your sound like serious ly damaging the top. First you can locate the battery with a small magnet as it's steel/nickel cased. Then grind down the the approximate center and do not grind metal away if you can. then grind to the edges and pry old battery out. I've done a few of these and it's that simple. Making it rocket science is unneeded. FYI the top carries, diode, battery, crystal and two capacitors. Allison

25 years, 1 month

1
0
0 0

? DEC FAQ

by mcguire＠neurotica.com

On May 19, Bill Janssen wrote: > I have been looking without success for a listing of boards > for the DEC PDP8. I have a couple of boards that I can't identify > for DEC but am not sure what they are or what computer they are for. A good reference can be found at: http://world.std.com/~mbg/pdp11-field-guide.txt [Thanks Megan!] > The boards are M5903 and M5904. There are a couple more that I left in > the pile. M5903 and M5904 aren't PDP8 boards...they're part of an RH11, a Massbus controller for Unibus-based PDP11 systems. If you plug them into an Omnibus system like a pdp8/e, you'll likely "let the magic smoke out". -Dave McGuire

25 years, 1 month

2
1
0 0

? DEC FAQ

by pete＠dunnington.u-net.com

On May 19, 16:40, Bill Janssen wrote: > I have been looking without success for a listing of boards > for the DEC PDP8. I have a couple of boards that I can't identify > for DEC but am not sure what they are or what computer they are for. > > The boards are M5903 and M5904. There are a couple more that I left in > the pile. M5903 and M5904 are MASSBUS terminal and control transceivers, respectivley, probably out of a PDP-11. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

1
0
0 0

? DEC FAQ

by ajp166＠bellatlantic.net

From: Bill Janssen <billj(a)ieee.org> > >The boards are M5903 and M5904. There are a couple more that I left in >the pile. Dont recognize them as PDP-8. >Also is there a cheap or free terminal program that runs under MS DOS >that will run at 110 baud. The ones I have start at 300. I gave away >my TTY many years ago and now I can't run my PDP8E as it only goes 110. Try an old version of procomm. Allison

25 years, 1 month

1
0
0 0

? DEC FAQ

by dburrows＠netpath.net

>From the PDP11-field-guide that was last updated my Megan: M5903 RH11 U MASSBUS terminal transceiver M5904 RH11 U MASSBUS control transceiver Which explains why you could not find anything looking at PDP8 Lists.:) Dan -----Original Message----- From: Bill Janssen <billj(a)ieee.org> To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org> Date: Saturday, May 19, 2001 7:48 PM Subject: ? DEC FAQ >I have been looking without success for a listing of boards >for the DEC PDP8. I have a couple of boards that I can't identify >for DEC but am not sure what they are or what computer they are for. > >The boards are M5903 and M5904. There are a couple more that I left in >the pile. > >Also is there a cheap or free terminal program that runs under MS DOS >that will run at 110 baud. The ones I have start at 300. I gave away >my TTY many years ago and now I can't run my PDP8E as it only goes 110. > >Thanks >Bill K7NOM

25 years, 1 month

1
0
0 0

HP 1631D logic analyzer help

by nellielide＠starpower.net

Anyone know where I can get a manual and logic probes for an HP1631D logic analyzer ? thanks, dave

25 years, 1 month

3
2
0 0

CMD drops Commodore 8-bit support

by spectre＠stockholm.ptloma.edu

Creative Micro Designs, the last "big name" in Commodore hardware development, is dropping Commodore 8-bit support as of 1 June. :-/ http://www.cmdweb.com/ -- ----------------------------- personal page: http://www.armory.com/~spectre/ -- Cameron Kaiser, Point Loma Nazarene University * ckaiser(a)stockholm.ptloma.edu -- The superfluous is very necessary. -- Voltaire -----------------------------

25 years, 1 month

2
2
0 0

tape drives

by pete＠dunnington.u-net.com

On May 19, 19:24, Tony Duell wrote: > Unfortunately, I don't have a basement. Wish I did, I'd have more space > for classic computers :-)... > > > yesterday afternoon I made several hundred dollars babysitting someone's > > WinNT box, coaxing its 5-gig Travan cart tape backup unit to > > retrieve one 13K file, and that took about three hours total > > But if what I find when I leave my machine room and get into the 'real > world' is machines running Lusedoze that take 3 hours to recover one 13K > file (heck, my calculator is faster than that), then I am not sure I want > to 'get out more' :-) It could be worse. Our campus filestore has gotten so big so fast that the backup technology installed couldn't keep up. At one point, it was taking 25 hours to do one day's backup, so *recovering* anything was not an option to be undertaken lightly :-) -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

1
0
0 0

qx-10 powersupply needed

by jackknive＠bmi-computers.com

i am looking for a working powersupply (or even case portion) for a epson qx-10 if anyone has one or knows where i can get one, please mail me i'm trying to make a old man happy -adam

25 years, 1 month

2
1
0 0

8008 book identification

by jim＠jkearney.com

Forgive me if this is common knowledge, but I haven't been able to dig up any information with a search engine, probably due to my very vague search terms... Around 1974-6 I had a book that covered 8008 system design, in a kind of cookbook fashion. I'm thinking it might have been published by Ohio Scientific, but that's far from reliable. As I recall, the cover was black and it was relatively thick. I built a 8008 system using it (wire wrapped, with 256 bytes of RAM), but book and computer have both vanished since then. I'd like to find another copy for nostalgia's sake. Does anyone have any clues?

25 years, 1 month

3
3
0 0

VCF East 1.0 Web Pages Are Up -- VOLUNTEERS NEEDED!

by vcf＠siconic.com

The VCF East 1.0 web pages are now up: http://www.vintage.org/2001/east/ Please spread the news far and wide! *** VOLUNTEERS NEEDED *** I am seeking about 8-10 volunteers to perform various pre-event chores as well as to staff certain necessary positions at VCF East 1.0. Volunteers will be rewarded with free admission to VCF East 1.0, a free VCF t-shirt and free food and drink. Volunteers are needed to post event notices in and around the Boston/Marlborough area, spread flyers around at various functions that would attract attendees, send out messages to newsgroups, and also to perform certain duties at the VCF East. If you are interested, please e-mail me at <sellam(a)vintage.org>. Thanks! SPREAD THE WORD!!! Sellam Ismail Vintage Computer Festival ------------------------------------------------------------------------------ International Man of Intrigue and Danger http://www.vintage.org

25 years, 1 month

1
0
0 0

Looking for : SUN S-BUS ethernet card (s) -- would like to trade

by claudew＠videotron.ca

Hi I would need one or even better, two of these. See my for trade page. I have quite a bit of stuff... http://computer_collector.tripod.com/vintagecomputers/fortradeindex.html I have more. Ask. Thanks Claude http://computer_collector.tripod.com

25 years, 1 month

2
1
0 0

DEC Rainbow & LA50 and other finds...

by claudew＠videotron.ca

Well a good week for me. I found a "not to active anymore" collector who lived around here and traded a few duplicate extra systems and periphs I had... And I got: Full kit DEC Rainbow with DEC LA50 printer and all original binders, reference cards, stickers etc...I guess everything there except the original boxes... TRS80 model I with monitor in very good shape. TRS80 model 200 that looks like it was almost never used at all. I might not be keeping the DEC LA50 so trade offers welcome I guess...I have no idea of how interesting this LA50 printer is...or is not... I just have no space for printers... Claude http://computer_collector.tripod.com

25 years, 1 month

2
1
0 0

PDP-11/53

by mbg＠world.std.com

>Actually I was talking about using the 3rd party controller to boot the >system after you remove the ROMs from the /53. I'm not talking about >putting the ROMs from the 3rd party disk controller into the sockets on >the /53, which obviously wouldn't work so well. A perfect example would be the DSD-880 unit. The interface for it can be configured not to provide the boot code if the system has integral code for booting RL02 or RX02, but the interface can also be configured to provide boot code appropriate for either at the standard address. The only question is whether the KDJ11-D can get out of the way of such memory references. It obviously has to be configured such that the on-board ROM doesn't respond to any of the normal addresses for boot code (beginning at 17765000 and 17773000, if I remember correctly). I would have to check the manual to find out how to configure it to do so, if it is possible. Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg KB1FCA | +--------------------------------+-------------------------------------+

25 years, 1 month

1
0
0 0

WARNING. You sent a potential virus or unauthorised code

by support＠star.co.uk

The MessageLabs Virus Control Centre discovered a possible virus or unauthorised code (such as a joke program or trojan) in an email sent by you. Please read this whole email carefully. It explains what has happened to your email, which suspected virus has been caught, and what to do if you need help. ------------------------------------------------------------ Some details about the infected message ------------------------------------------------------------ To help identify the email: The message sender was owner-classiccmp(a)classiccmp.org nellielide(a)starpower.net classiccmp(a)classiccmp.org (if this is not your email address, the message sender possibly belongs to a mailing list to which you both subscribe.) The message was titled 'Re: HP 1631D logic analyzer help' The message date was Fri, 18 May 2001 22:26:27 -0400 The message identifier was <000701c0e00b$223f26c0$10152c42@nqezxeod> The message recipients were Lee.Davison(a)merlincommunications.com To help identify the virus: Scanner 1 (F-Secure) reported the following: F-Secure Anti-Virus for i386-linux Release 4.08 build 2260 sign.def version 2001-05-17 fsmacro.def version 2001-05-16 sign2.def version 2001-05-17 669139_2MH_message.htm infection: JS/Kak.A@m 1 files scanned 1 infections found The message was diverted into the virus holding pen on mail server server-3.tower-17.messagelabs.com (id 669139_990239910) and will be held for 30 days before being destroyed. ------------------------------------------------------------ What should you do now? ------------------------------------------------------------ If you sent the email from a corporate network, you should first contact your local Helpdesk or System Administrator for advice. They will be able to help you disinfect your workstation. If you sent the email from a personal or home account, you will need to disinfect your computer yourself. To do this you will need an anti-virus program. We suggest using one of the leading industry anti-virus packages such as McAfee, F-Secure or Cybersoft, which cost £15-£30 per copy. ------------------------------------------------------------ Getting more help ------------------------------------------------------------ If you believe this message to be a false alarm or you require further assistance, you can email Star Internet Support at:- support(a)star.net.uk or contact Star Helpdesk by telephone on:- +44 (0) 1285 884433 Please quote the following Virus Pen ID when contacting Support. <<< mail server server-3.tower-17.messagelabs.com (id 669139_990239910) >>> If replying by email, please forward this entire email. _____________________________________________________________________ This message has been checked for all known viruses by Star Internet delivered through the MessageLabs Virus Scanning Service. For further information visit http://www.star.net.uk/stats.asp

25 years, 1 month

1
0
0 0

P/OS Installation Problem

by dittman＠dittman.net

When I try to install PRODCL from the DECUS distribution I get the error: An RMS error occurred at point 0. The sts,stv values are -384. , 0. Does anyone know what this error is, and what the problem is with the installation? -- Eric Dittman dittman(a)dittman.net

25 years, 1 month

1
0
0 0

PDP-11/53

by pete＠dunnington.u-net.com

On May 18, 16:06, healyzh(a)aracnet.com wrote: > Actually I was talking about using the 3rd party controller to boot the > system after you remove the ROMs from the /53. I'm not talking about > putting the ROMs from the 3rd party disk controller into the sockets on the > /53, which obviously wouldn't work so well. I wondered about that -- but it won't necessarily initialise everything correctly. Emulex boot ROMs won't always set up all the registers in a J11, or initialise large amounts of parity or ECC RAM, for example. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

1
0
0 0

PDP-11/53

by pete＠dunnington.u-net.com

On May 18, 17:14, Eric Dittman wrote: > > On May 18, Pete Turnbull wrote: > > > The standard (as far as I know -- the ones I have came from a > > > microPDP-11/53 in a BA23 case) boot ROMs are 23-261E5 and 23-263E5. I seem > > > to have accidentally left binary images in my DECROMs directory at > > > www.dunnington.u-net.com/public/ :-) > > > > Eric, do you have the facilities to burn these EPROMs? If not, > > I can help you. Feel free to contact me. > > Yes, I can burn most types of EPROMs, including > the ones on this board. Are they ordinary 27128s or something different? I've seen a lot of DEC EPROMs which had fewer pins than "standard" -- though AFAIR only 8KB ones. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

2
1
0 0

PDP-11/53

by mcguire＠neurotica.com

On May 18, Eric Dittman wrote: > > Eric, do you have the facilities to burn these EPROMs? If not, > > I can help you. Feel free to contact me. > > Yes, I can burn most types of EPROMs, including > the ones on this board. Good deal. -Dave

25 years, 1 month

1
0
0 0

PDP-11/53

by pete＠dunnington.u-net.com

On May 18, 13:41, healyzh(a)aracnet.com wrote: > On May 18, 14:06, Eric Dittman wrote: > > I've been gifted with a PDP-11/53 (or 53+) CPU module. > I just heard from someone a few minutes ago, that if you've got a 3rd party > disk controller that you can boot the system off you should be able to > simply remove the ROM's. Well, only if they fit, physically and electrically. Most 3rd-party boot ROMs I've seen (eg Dilog, Emulex, Plessey, GR, etc) wouldn't be the right type for the board. The code might work; I suspect the ROMs from an 11/73 or 11/83 might work. I never used an 11/53 much, but from what I remember it's pretty much like other 11/73+ or 11/83 boards, just with memory on it as well as SLUs and bootstrap etc. I've no doubt someone else (Megan? Allison? others?) can expand on the differences. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

2
1
0 0

Slicing open the top of a 48T02 Sun Sparc chip to replace bat tery is that thing hollow or filled with epoxy?

by Lee.Davison＠merlincommunications.com

> Has anybody tried one of the DALLAS "smart socket" products with this thingie? Unfortunately the 48T02 is a TOD clock and calendar as well as NVRAM, so there's no suitable SmartSocket to replace it. The registers have to be at particular places and use a particular protocol too. Just got the data sheet and the Dallas DS1642 is a direct form, fit and function replacement for the MK48T02(B). It says so right at the start of the sheet. Cheers, 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 message has been checked for all known viruses by Star Internet delivered through the MessageLabs Virus Scanning Service. For further information visit http://www.star.net.uk/stats.asp

25 years, 1 month

1
0
0 0

PDP-11/53

by pete＠dunnington.u-net.com

On May 18, 17:32, Dave McGuire wrote: > On May 18, Pete Turnbull wrote: > > or 11/83 might work. I never used an 11/53 much, but from what I remember > > it's pretty much like other 11/73+ or 11/83 boards, just with memory on it > > as well as SLUs and bootstrap etc. I've no doubt someone else (Megan? > > Allison? others?) can expand on the differences. > > I believe the memory on the 11/53 board can be accessed much faster > than memory on the qbus, as well. Yes, I believe so. Anyone know *how much* faster? I don't think it was all that much faster than PMI memory. And I think the /53 *doesn't* work with PMI, which the /73 and /83 do (only the /83 was supported to use it, though). -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

1
0
0 0

Exidy Sorcerer: Next problem

by pete＠dunnington.u-net.com

On May 17, 22:10, Louis Schulman wrote: > OK, the power supply works! I have power on the motherboard. Now on > to the next problem. > > When attached to a composite monitor, I get video, but it is a > rolling/pulsing screen. Yes, I have the sync set to 60 Hz. I've seen that happen on Mark 1's where the sync isn't well matched to the monitor's needs and it couldn't lock. That seemd to happen with 50Hz versions and certain monitors, due to the timing of the sync pulse relative to the start of frame. Since this is a Mark 2 and I assume you're using it at 60Hz, I doubt that's the problem. Does switching between the 50Hz and 60Hz settings make a difference? If so, there's probably something wrong with the timing. Looking at the schematic, VSYNC is generated by the counters and multiplexers at 13A, 19B, 20B and 21B, and the 74LS74 flipflops at 18A and 18B. The 50Hz/60Hz switch controls the multiplexers at 13A and 19B, and they choose the reload values for the counters at 20B and 21B. You should see a high multiple (I'm too lazy to work out the frequency :-)) of 60Hz at 21B pin 15 and a lower multiple at 20B-15. That in turn feeds the LS74 at 18B, via the gate at 16A, and the VSYNC signal comes out of 18B-5. If you have a scope, that will tell you if the signal looks about right, if not, but you have a logic probe, at least you can look for 60Hz pulses. If it's extreme, perhaps the vsync isn't getting to the video socket. It's mixed by ORing it [1] with the HSYNC in the LS32 at 9B (pin 9 is VSYNC, 10 is HSYNC, 11 is composite). The composite sync is buffered by by an LS04 at 10H (in pin 10, out pin 11) and then via R59 is mixed with the video data (via R58) to the base of the video transistor. [1] which is what causes the problem for some 50HZ monitors; the HSYNC is effectively lost during the VSYNC pulse, which is very close to the first used scan line, so the top few lines of the screen tend to tear. > So, can you supply a troubleshooting procedure to find where the > problem lies? Again, keep in mind that this is a Sorcerer II (with > apparently 32K in Rows 2 and 3, is this the proper configuration)? Two rows is quite normal -- if the ICs are 4116 or equivalent you have 32K; if they're 4104 or equivalent you have 8K. I think you mean rows B and C (look for the numbers at the edge of the board). Physical row C is actually "row 1" or bank 1 as far as the RAM decode is concerned, and row B is bank 2. Row A is bank 3. The banks have to be filled in order 1,2,3 (rows C,B,A). So, yes, your setup is normal. If you can read the screen display, BASIC will tell you how much RAM is free after it initialises. If you don't have BASIC, the monitor ROM will tell you the address of the top of RAM after it initialises. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

1
0
0 0

PDP-11/53

by pete＠dunnington.u-net.com

On May 18, 14:06, Eric Dittman wrote: > So, does any here have a source for bootable ROMs > for this CPU? The standard (as far as I know -- the ones I have came from a microPDP-11/53 in a BA23 case) boot ROMs are 23-261E5 and 23-263E5. I seem to have accidentally left binary images in my DECROMs directory at www.dunnington.u-net.com/public/ :-) -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

2
1
0 0

PDP-11/53

by mcguire＠neurotica.com

On May 18, Pete Turnbull wrote: > The standard (as far as I know -- the ones I have came from a > microPDP-11/53 in a BA23 case) boot ROMs are 23-261E5 and 23-263E5. I seem > to have accidentally left binary images in my DECROMs directory at > www.dunnington.u-net.com/public/ :-) Eric, do you have the facilities to burn these EPROMs? If not, I can help you. Feel free to contact me. -Dave McGuire

25 years, 1 month

2
1
0 0

PDP-11/53

by mcguire＠neurotica.com

On May 18, Pete Turnbull wrote: > or 11/83 might work. I never used an 11/53 much, but from what I remember > it's pretty much like other 11/73+ or 11/83 boards, just with memory on it > as well as SLUs and bootstrap etc. I've no doubt someone else (Megan? > Allison? others?) can expand on the differences. I believe the memory on the 11/53 board can be accessed much faster than memory on the qbus, as well. -Dave McGuire

25 years, 1 month

1
0
0 0

PDP-11/34 on eBay... NOT... NOT

by jss＠ou.edu

It seems that someone told the seller his PDP-11/34 didn't have CPU cards. The seller ended the auction and relisted, this time with a bullet point saying "Sorry there are no CPU cards". -- Jeffrey S. Sharp jss(a)ou.edu

25 years, 1 month

3
2
0 0

Magnetic Drum Storage WAS Re: Using audio cassette

by mranalog＠home.com

"Hans Franke" <Hans.Franke(a)mch20.sbs.de> said: > Well, as long as you think along a 'real' drum with flying heads > etc. you're right, but there is a simple solution - take a card > board tube and warp regular cassete tape around, and let a head > read/write this tape ... if you take an old style washing powder > drum (ca. 30 cm diameter / 1 ft) you get a lenght of about 1m > (3 ft 4") - what was the usual speed of cassetes ? 4 cm/s ? I'm > not shure (Tony ?), as a rough estimation you get a track size > of some 3 kByte and an average access time of 12s not to bad ... I have this really sick and perverted habit of picking up unusual items just in case they might be useful for future projects. All of this talk about building a drum storage reminded me of something that I added to my eclectic resource pile a few years ago, an old drum type fax machine. But, when it comes to adding mass storage to a digital computer system, IMHO I can't think of anything faster, easier, or more reliable than the old Commodore 1541. * The DOS is built-in. * Only the system side communication routines need to be written and there is commented source code to use as examples. * The drive side communication routines can also be rewritten. * Since the communication with the drive is normally handled with very robust handshaking, the speed of the computer system is totally unimportant. This also means that disk I/O can be easily interrupted. * And additional drives can be daisy-chained on the same bus. Regards, --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://www.best.com/~dcoward/analog =========================================

25 years, 1 month

4
3
0 0

destinking the computers

by mmcfadden＠cmh.edu

Another pointer to a web page about chemicals to remove grease and nicotine for many surfaces. http://www.energy2green.com/uses4.html Seems to me that these products will clean computer stuff as well as car parts. http://www.idealchemicalproducts.com/AutoDetail-1.html I especially like the part that lets you pick the fragrance you prefer. I think Pina Colada or Bubble gum would be perfect for a Mac. :) That's the next wave in computing, different fragrances to match the color of you computer. I'm really partial to ozone when I'm around big iron. Deodorants Spray deodorants for use in auto detail shops Available in Bag-N-Box Long lasting fragrances Super concentrated Water soluble Contains no colorants USES: our deodorants are super concentrated and water soluble. Each product should be diluted with water prior to use and can be used to reduce malodors in a variety of applications including automobiles, campers, tractor cabs and sleeper areas, automobile trunks, bathrooms and shower areas, hotels and motels, nursing homes, day care centers, restaurant garbage areas and any musty damp areas. Each of our deodorants dilutes easily with water and will not harm any surface not harmed by water. Our deodorants are non staining, long lasting and economical to use. USE DIRECTIONS: mix 4 to 8 ounces of our concentrate with 1 gallon of water. Fill either a trigger spray bottle or pump up sprayer with dilute solution and spray area to be treated. Repeat if necessary. Concentrates can also be used in the evaporative air flow type room deodorizers. Simply pour concentrate into the holding container or tank and close door. All the different fragrances that we offer are listed below with product number for ordering * PEACHIE (Fruit) 4-248 * HALT (Cherry) 4-239 * LEMON 4-372 * STRAWBERRY 4-444 * ORANGE 4-241 * BABY FACE (Baby Powder) 4-312 * LIME 4-445 * VANILLA 4-242 * WATERMELON 4-255 * PINEY 4-373 * PARADISE (Floral) 4-912 * PINA COLADA (Coconut) 4-246 * RASPBERRY 4-446 * BUBBLE GUM 4-243 Mike mmcfadden(a)cmh.edu

25 years, 1 month

1
0
0 0

74xx orgin

by ajp166＠bellatlantic.net

From: Hans Franke <Hans.Franke(a)mch20.sbs.de> > >Maybe I should specify my question ... I need to know >at what date these chips where at first available - >not just the era. A good single IC to use could be the >74181 ALU. Around 71. Then the H, S, LS, ALS and F parts. >> I have a 74 TTL design guide at home, so I'll check it too. > >The oldest datasheet I could find says Dec 1972 for the 74S181 Sounds close to right. The S however was later the basic 74181 was first. Infact the July 1972 issue of Ham Radio Has a supplier selling the 74181 for $4.50!! Allison

25 years, 1 month

2
1
0 0

Exidy Sorcerer

by pete＠dunnington.u-net.com

On May 18, 11:30, Hans Franke wrote: > AFAIR you also have to use either 'adaptor plugs - or fit a new pwower > cable, since the Sorcerer had a fixed one. And there is nothing more > stupid in the world of power transmission than these plugs ... The power cable is fixed, but the plug on the end (that goes into the wal socket) was not a mouilded plug; it was a rewirable one, so it's very easy to remove and fit an appropriate type without mangling the cable. Not usaully a problem for me anyway, as it happens I have some Schuko sockets on my bench as well as lots of British 13A sockets. > Unless the PS is already switchable and there is a Kaltgeraetestecker > (no idea how these inlet connectors are called in english, where the > power cord is detatchable) The three-pin type I think you mean we just call an IEC inlet or IEC socket. The ones that have the notch we call "hot-condition" IEC plugs/sockets (like the ones you get on a kettle). > I always keep the original condition - for > the short time I play around with a specific unit (seldom more than a > few weeks) a stepdown transformer is a fine solution. Sensible enough, but in this case there is provision inside the Sorcerer to rewire the transformer primaries, and it's documented in the manuals. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

1
0
0 0

HP 300

by LFessen106＠aol.com

In a message dated 5/18/01 12:18:08 PM Eastern Daylight Time, cmurillo(a)manizales.autonoma.edu.co writes: > "Iggy Drougge" wrote: > -snip- > > they let me have it > > for 50 crowns. My pleasure. > > You were lucky; I'm envious. I'd like to have more of these. > Heck, I'd like to have ONE! -Linc Fessenden In The Beginning there was nothing, which exploded - Yeah right... Calculating in binary code is as easy as 01,10,11.

25 years, 1 month

2
1
0 0

Slicing open the top of a 48T02 Sun Sparc chip to replace battery is that thing hollow or filled with epoxy?

by pete＠dunnington.u-net.com

On May 17, 19:34, Richard Erlacher wrote: > Has anybody tried one of the DALLAS "smart socket" products with this thingie? Unfortunately the 48T02 is a TOD clock and calendar as well as NVRAM, so there's no suitable SmartSocket to replace it. The registers have to be at particular places and use a particular protocol too. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

10
12
0 0

HP 300

by cmurillo＠manizales.autonoma.edu.co

"Iggy Drougge" wrote: -snip- > they let me have it > for 50 crowns. My pleasure. You were lucky; I'm envious. I'd like to have more of these. > Once I had bought it, though, I though that > 9000/300 was a suspiciously low number. Wasn't that some kind of 68010 based > machine? And why would such a machine have two Ethernet NICs? It probably found a second life as a router. Good for the guy who realized that the machine was still useful. > It really semed > like a waste, but on the underground ride how, I pulled out the big board with > all the ports, which seemed notably shinier and newer than the NIC above, and > found that it had a 68040. I thus deducted that it must be a 9000/380. Has > this machine been upgraded, or did HP simply not bother to identify their > machines any closer than the series (in this case 9000/300)? That's indeed the case. All hp300 systems were pretty modular, although there were some, such as the 340, that were more closed. > In any case, it came without keyboard, and I read that in order to switch it > over to serial terminal mode, one would have to perform a certain manoeuvre > via the keyboard. Bloody well thought out, HP! Is there no way to use a serial > terminal without any HIL keyboard involved? I was forced to leave my 380's monitor behind (darn hp98754a weighed about 100 pounds!) when I moved. I haven't yet gotten down to setting up the 380 in its new home, and I will have to reconfigure it to use a serial console. But I do have some HP-HIL keyboards. > The machine starts up and beeps a little. It's got not drives installed, but > there's a 50-pin "Centronics" connector marked SCSI/FS-HPIB. What is FS-HPIB? > Doesn't sound like anything I'd like to feed into my SCSI devices. The connectors in mine are marked (left to right, top to bottom) 1) BNC for LAN 2) AUI 3) parallel port (pc style) 4) HP-HIL 5) 9 pin PC style RS-232 6) SCSI/HS HP-IB (50 conductor Centronics) 7) 1/8" spkr 8) HP-IB The board is a 98574-66510 Rev C and the ROM is labeled 1818-5062 2/22/91. The cpu is a 25MHz RC 68040. Close to the SCSI header connector in the board there is an unconnected 34 pin header. Maybe that's the HS-HPIB. Indeed, HS-HPIB stands for a faster version of HPIB that was intended for mass storage only; later 300 systems such as the 370 had "human interface boards" (i.e., I/O boards) with HS-HPIB in an attached cable, plus the other usual ports and interconnects. I use the SCSI and the standard HPIB connectors in mine without problems and I am able to boot netBSD off an ST410800N on the SCSI chain or HPUX 9.1 off three 330MB HPIB drives contained in a 7963B behemoth of an enclosure; these I plug in the standard HPIB connector. I have 64MB in it. For a while, I used it as a pretty decent web server. When I get it back up that's what I am going to use it for. I've put pictures of some of the stuff above at http://jimulco.autonoma.edu.co/~carlos/hp/ No hp380 pics yet, though. Later. carlos. -- Carlos E. Murillo-Sanchez email: carlos_murillo(a)ieee.org Universidad Autonoma de Manizales, Manizales, Colombia and 428 Phillips Hall, Cornell University, Ithaca, NY 14853, USA

25 years, 1 month

1
0
0 0

I *need* a Rack

by LFessen106＠aol.com

Does anyone in the list here on the east coast have a 19" rack they are looking to get rid of? I really could put on of those to goo use. -Linc Fessenden In The Beginning there was nothing, which exploded - Yeah right... Calculating in binary code is as easy as 01,10,11.

25 years, 1 month

6
5
0 0

PDP-11/34 on eBay... NOT... NOT

by mbg＠world.std.com

gee, without CPU cards, it can hardly be *called* an 11/34... just a BA11 box which just so happens to have an 11/34 programmers console attached... (maybe it even has the correct backplane, but who knows) Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | Internet (work): gentry!zk3.dec.com | | Unix Support Engineering Group | (home): mbg!world.std.com | | Compaq Computer Corporation | addresses need '@' in place of '!' | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 | required." - mbg KB1FCA | +--------------------------------+-------------------------------------+

25 years, 1 month

1
0
0 0

se/30

by philcarole＠acenet.net.au

can someone give me some info on se/30's or System 6.0.3? regards Tom, reply to:tomhotdog@hotmail.com

25 years, 1 month

17
25
0 0

Exidy Sorcerer

by pete＠dunnington.u-net.com

On May 16, 21:59, Louis Schulman wrote: > Well, I just got a fabled but seldom seen Exidy Sorcerer. It has a > power supply problem (including the need to be converted back from 220 > to 110V) but I am working on that. That should be fairly easy; you just change the transformer connections inside the case. The 110V setting has two primary windings connected in parallel to the mains; for 240V the black/red and black/yellow wire would have been cut at the mains filter and joined together, putting the two windings in series. There weren't different units for the two voltages; Exidy literally cut the wires as I describe above, and joined them together for the European sales. If it's been set for the "wrong" voltage, it probably has been set for the wrong vertical sync frequency as well. How you change this depends on whether it's a Mark I or Mark 2. If it has three rows of DRAM, or sockets for three rows, it's a Mark 2. For a Mark I, there are 3 jumper sets on the underside of the PCB, beside the ICs in positions 3B and 4B. The first set is a pair of square pads between the rows of pins of 4B; connect them for 60Hz, or disconnect them for 50Hz. The second set is a group of 3 pads between 4B and 3B. Two are nearer 4B, one is nearer 3B, and they're arranged in an L shape. Connect the middle of the L to the other one near 4B for 60Hz; connect the middle of the L to the one nearer 3B for 50Hz. The last set is the other side of 3B; connect the two pads nearest 3B for 60Hz, connect the one nearest row A to the one furthest from 3B for 50Hz. For a Mark 2, it's easier. There's a 4-pole DIP switch at positin 11A on the top side of the PCB. Switch section 1 off for 60Hz, on for 50Hz. > The Sorcerer was a contemporary of the Apple II, Commodore Pet and > TRS-80 Model 1. It was unique in a number of features, including its > use of an S-100 expansion box. In many respects, it appears to have > been inspired by the SOL 20. > > Info on the web in very sparse. I have nothing but the bare CPU, and > photocopies of some manuals. I would like any info anyone has > available, software, manuals, hardware, etc. Will pay good bucks, or > trade from my vast collection of interesting stuff. I have the BASIC ROMs, the original monitor ROMs, patched (bugfixed) monitor ROMs, images of the WP PAC ROMs (anyone got images of the Dev Pac ROMS? Or a WP PAc manual? I used to have all these...). I have both Technical Manuals and the Software Manual, the smaller of the two BASIC manuals, the S100 Expansion Unit Technical Manual, notes on the hardware bugs (eg the RS232 misdesign on the Mark I, for which I have a fix), and some expansion options (eg upgrading 32K Mk1 to 48K). I'm not willing to part with manuals, but I'm happy to lok anything up for you, and the ROM images and my source code is at http://www.dunnington.u-net.com/public/ExidyROMs/ I've also got some games and other software (not much, I'm afraid, things like Breakout, Galaxians, BASIC Toolkit) which aren't on line, but might be available if you can't find anything elsewhere. I assume you've found: http://www.trailingedge.com/exidy/ http://www.heydon.org/kevan/collection/manufacturer-exidy/sorcerer.html http://www.tardis.ed.ac.uk/~alexios/MACHINE-ROOM/Exidy_Sorcerer.html http://www.lisp.com.au/~michael/exidy/ http://utopia.knoware.nl/users/stuurmn/exidys.htm http://www.digidome.nl/exidy.htm There are some errors in the last two or three pages (for example, it never used a Z80A, and there was never any version but the 2.1MHz), but still useful information. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

4
5
0 0

Exidy Sorcerer

by pete＠dunnington.u-net.com

On May 17, 19:55, Louis Schulman wrote: > Thanks, Peter. This is very helpful. I had figured out reversing the > serial to parallel wiring, but didn't know about the dip switch > settings. Mind is obviously the Mark 2. My original one was, too. However, I sold it in 1982 and the one I have now is a Mark 1. Does yours have 48K? It's easy to add extra memory to bring it up to full spec, but there is a timing problem that affects some boards when you fit the third bank. I was unlucky and spent days trying to figure out what was wrong when I bought the extra 8 chips, so eventually I sent it to a Sorcerer dealer/repeairer and he not only modified it but gave me a diagram showing the fix. > Is there some way I could get copies of the manuals? Not very easily. I don't have access to a scanner at the moment. However, David Williams has quite a lot on his Trailing Edge website. > Also, is there > some way to create a ROM Pack? I really could use the Standard Basic > ROM pack. Assuming I burn the chip, what else is there to the circuit? That's not too hard. The Pac consists of a PCB with 4 x 2316 ROMs and a 2-chip decoder circuit, all mounted inside an 8-track tape cartridge shell. It's perfectly possible to build a replacement using a single 2764 and a 74LS10. With a little care, the bare PCB can be inserted into the cartridge slot, so you don't even need to cannibalise a "rare" 8-track cartridge. I have a drawing for such a PCB which I'll put on my website for you. Look for it at http://www.dunnington.u-net.com/public/ExidyROMs/ROMPacPCB.ps Minor caveat: although the date on the file tells me I drew this years ago, the need to use it went away and I never built a prototype. It should work, though. There are 17 places to put track pins to connect one side to the other, two places to put capacitors (a 6V 10mfd tantalum and a 100nF ceramic), at the end of the 74LS10 location, and both IC locations indicate pin 1 by a square (instead of oval) pad. The ROM images are already there, just concatenate them (in order) to make a 2764. -- Pete Peter Turnbull Network Manager University of York

25 years, 1 month

1
0
0 0

Books available

by gregorym＠cadvision.com

>I have some vintage books that are surplus to requirements, and are free* >to any list member who wants to pay shipping. They are: > <list snipped> > E-mail me off-list if >interested. Take one, take 'em all. > Sorry for replying to my own message, but that last line is misleading. I meant to say: "Take one OR take them all". You don't have to take all of them. First come, first served. Mark.

25 years, 1 month

1
0
0 0

Books available

by gregorym＠cadvision.com

I have some vintage books that are surplus to requirements, and are free* to any list member who wants to pay shipping. They are: 6809 Assembly Language Programming, by Lance Leventhal (Osborne/McGraw Hill, 1981) Motorola MC6809-MC6809E Microprocessor Programming Manual (May 1983 printing) PL/1 Structured Programming 2nd Ed., by Joan K. Hughes (John Wiley & Sons, 1979) Structured PL/1 (PL/C) Programming, by Jean Paul Tremblay et al. (McGraw Hill, 1980) Structured Programming Using PL/1 and SP/k, by J.N.P. Hume and R.C. Holt (Reston Publishing Co., 1975) Computer Programming RPG II, by Gary Shelly and Thomas Cashman (Anaheim Publishing, 1981) Comprehensive Structured COBOL, by Gary Popkin (Kent Publishing Co, 1984) COBOL Programming A Structured Approach 2nd Ed., by Peter Abel (Reston Publishing, 1984) VAX Basic, by David Weinman and Barbara Kurshan, (Reston Publishing, 1983) 370/360 Assembler Language Programming, by Nancy Stern et al. (John Wiley & Sons, 1979) All are in good, but used, condition. Most were somebody's university textbooks at one time, so there are some marginal notations. Shipping is from T2J 5H9 (Calgary, Alberta, Canada). E-mail me off-list if interested. Take one, take 'em all. Cheers, Mark Gregory * Donations of unneeded Amiga books, magazines, hardware, or software always gratefully accepted.

25 years, 1 month

1
0
0 0

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

2001

2000

1999

1998

1997

test-drb