I am desperatly looking for a copy (electronic, scanned, hard, any!) of the MSD service manual (for the MSD Dual Drive sometimes called the SD2 or Super Drive 2) for the Commodore line of computers...I'd like to sell my MSD dual drive, and it is in great shape, but I have the owners manual and figure it would be nice to include a service manual as these are 20+ years old! Thanks -----Original Message----- From: cctech-admin(a)classiccmp.org [mailto:cctech-admin@classiccmp.org]On Behalf Of cctech-request(a)classiccmp.org Sent: Sunday, May 04, 2003 12:32 AM To: cctech(a)classiccmp.org Subject: cctech digest, Vol 1 #495 - 49 msgs Send cctech mailing list submissions to cctech(a)classiccmp.org To subscribe or unsubscribe via the World Wide Web, visit http://www.classiccmp.org/mailman/listinfo/cctech or, via email, send a message with subject or body 'help' to cctech-request(a)classiccmp.org You can reach the person managing the list at cctech-admin(a)classiccmp.org When replying, please edit your Subject line so it is more specific than "Re: Contents of cctech digest..." Today's Topics: 1. HP's Amigo Protocol, HFS (Peter Brown) 2. RE: HP 9000 300 data acquisition card - Infotek AD200 (Peter Brown) 3. Another rubber capstan turns to mush (chuck(a)mail.schillernet.us) 4. DATA I/O SetSite module (Joe) 5. dnd (Ken Carlin) 6. Re: More DEC Stuff Coming (Jeffrey Sharp) 7. Fw: Germany: Free RS/6000 ! (Robert F. Schaefer) 8. Re: Heathkit EC-1 (blstuart(a)bellsouth.net) 9. Great Finds Todayin Houston (Keys) 10. Re: Pens for TRS-80 PC-2 plotter - found. (Ethan Dicks) 11. Re: More DEC Stuff Coming (TeoZ) 12. wanted: documentation for IBM 3164 terminal (Joseph Ballantyne) 13. RE: More DEC Stuff Coming (Witchy) 14. VAXStation 4000/90 Manuals (David de Gruyl) 15. Re: Inquiry about Classic Computers Collectors List (John Boffemmyer IV) 16. Re: VAXStation 4000/90 Manuals (Paul Williams) 17. Re: VAXStation 4000/90 Manuals (David de Gruyl) 18. More items from the 'Garage'... (James Willing) 19. RE: FS/FT Items (philip(a)awale.qc.ca) 20. FA: HP computer manuals; Pascal, Fortran, IPC (Joe) 21. RE: H89 disk formats? (Patrick Rigney) 22. Re: Heathkit EC-1 (Doug Coward) 23. Re: Heathkit EC-1 (Doug Coward) 24. Re: Heathkit EC-1 (Dwight K. Elvey) 25. Looking for a 11/44 in denver area / colorado (emanuel stiebler) 26. RE:256x4 80NS or faster (Geoff Reed) 27. RE:256x4 80NS or faster (Joe) 28. Re: HP Amigo command set and HFS disk format (Joe) 29. Re: Heathkit EC-1 (Doug Coward) 30. Re: Heathkit EC-1 (Ethan Dicks) 31. Neat find (in my own junk bin!) - NS 8073 (Ethan Dicks) 32. Re: Looking for a 11/44 in denver area / colorado (Tony Duell) 33. Northgate OmniKey Ultra (David Holland) 34. Re: Heathkit EC-1 (Dwight K. Elvey) 35. VCF Europa 4.0 (Vintage Computer Festival) 36. Re: Northgate OmniKey Ultra (Frank McConnell) 37. MicroVAX4000/5050A drive sleds (Greg Elkin) 38. TRS-80 / System 80 (Alan Greenstreet) 39. Re: MicroVAX4000/505A drive sleds (Robert F. Schaefer) 40. Gnomes (Bob Clark) 41. HP's Amigo Protocall & HP IPC (Joe) 42. Fw: Viewfax 258 (Bob Clark) 43. VCF Europa Live (Vintage Computer Festival) 44. Re: HP's Amigo Protocol, HFS (Joe) 45. Re: Northgate OmniKey Ultra (David Holland) 46. Soroc IQ120 Chip Problem (Marvin Johnston) 47. HP9915 (Tony Duell) 48. Re: Another rubber capstan turns to mush (R. D. Davis) 49. Re: HP Amigo command set and HFS disk format (Frank McConnell) --__--__-- Message: 1 From: "Peter Brown" &lt;peterbrown10(a)hotmail.com&gt; To: cctalk(a)classiccmp.org Subject: HP's Amigo Protocol, HFS Date: Sat, 03 May 2003 17:53:15 +0000 Reply-To: cctech(a)classiccmp.org Hi Joe, The drive is a 9134XV - serial number begins with 23 so I guess that it would be from around 1983. If I look at the drive with an HP 9000 332 it sees an HFS partition - with basic 6.0 binaries :). When I ask the drive to identify itself it returns a pair of bytes that I don't recognise (1 and 15 from memory but I could be wrong). This pair of bytes is not the same as the pair that would be returned by a CS80 drive. I managed to check the reader software with a pair of 9133 drives, a 9134 drive (which fails) and a 7907 drive (this identifies itself correctly but appears to have been wiped of data at some time). I have some other software recorded on 7906 removable cartridges - does anyone know if an HPIB version of this drive was made? - I think that the model number may be 7906H but I have no further information. Does anyone have a 7906H tht they don't need? Cheers Peter Brown _________________________________________________________________ On the move? Get Hotmail on your mobile phone http://www.msn.co.uk/mobile --__--__-- Message: 2 From: "Peter Brown" &lt;peterbrown10(a)hotmail.com&gt; To: cctalk(a)classiccmp.org Subject: RE: HP 9000 300 data acquisition card - Infotek AD200 Date: Sat, 03 May 2003 21:47:05 +0000 Reply-To: cctech(a)classiccmp.org Hi All, I've just acquired an HP 9000 series R332. In the back of it amongst the usual HPIB / GPIB cards there is a card marked Infotek Systems AD200 Converter, \ Assy 900-13992 rev E - I assume that this is some sort of data acquisition card. Does anyone have details of the card specification / the software required to drive it? Cheers Peter Brown _________________________________________________________________ It's fast, it's easy and it's free. Get MSN Messenger today! http://www.msn.co.uk/messenger --__--__-- Message: 3 Date: Sat, 3 May 2003 20:58:49 -0400 (EDT) Subject: Another rubber capstan turns to mush From: &lt;chuck(a)mail.schillernet.us&gt; To: &lt;cctalk(a)classiccmp.org&gt; Reply-To: cctech(a)classiccmp.org Hello All - bah, was just playing with my QIC drive, a WangTek 5150ES (Using dos tar!) and halfway thru the first listing tape stops. Turns out the rubber what drives the tape has gotten very soft. Anybody have a box full of cheap replacements? (pic here: http://mail.schillernet.us/wangtek/ ). I'd like to keep it working, but paying for depot service ( like http://www.eds-sales.com/EDS-QICPG.htm ) on a 150Mb drive is, uh, a questionable investment. --Chuck --__--__-- Message: 4 Date: Thu, 01 May 2003 13:45:52 To: cctalk(a)classiccmp.org From: Joe &lt;rigdonj(a)cfl.rr.com&gt; Subject: DATA I/O SetSite module Reply-To: cctech(a)classiccmp.org Anybody know where I can find a PDF copy of the manual for this? Joe --__--__-- Message: 5 From: "Ken Carlin" &lt;carlin(a)nauticom.net&gt; To: &lt;cctech(a)classiccmp.org&gt; Subject: dnd Date: Thu, 1 May 2003 20:10:47 -0400 Reply-To: cctech(a)classiccmp.org Hello: I have been searching for the source code to DND for quite a long time now, and I ran across this post you made at some time in the past. Would you happen to have worked out the details in order to distribute the source code? I used to play this game in college many years ago, and it would mean quite a lot to me to get it up and running again. Thanks for any help that you can offer, Ken Carlin Yep, I know exactly which one you speak of... I have the sources for the pascal version of the game, along with the data files, preserved for almost 20 years. I have ported the game to C using curses (actually, it was mostly a brute-force translation from the pascal) and have it running at least as well as the original pascal version (which was incomplete) at home on my Alpha PWS running Linux. I've been in contact with one of the people who was responsible for writing the pascal version, and am trying to get ahold of all the others so that I can figure out how to write up a 'copyright' page with proper attributions. I played it on RSTS/E when I was working at Parker St (DEC) in Maynard back in 1977. Actually, the pascal version was also built on RSTS using, I believe, the OMSI compiler, and ran on RT-11. Dan has apparently given permission for any and all versions of the game to exist with his blessing, but since the source I have had a copyright which is problematic (since it doesn't mention him), I have to try to do the right thing. If/when I can resolve the issues of attribution, I'd love to make it available... should I even bother with sourceforge? :-) Megan Gentry Former RT-11 Developer +--------------------------------+-------------------------------------+ | Megan Gentry, EMT/B, PP-ASEL | email: gentry at zk3.dec.com (work) | | Unix Support Engineering Group | mbg at world.std.com (home) | | Hewlett Packard | (s/ at /@/) | | 110 Spitbrook Rd. ZK03-2/T43 | URL: http://world.std.com/~mbg/ | | Nashua, NH 03062 | "pdp-11 programmer - some assembler | | (603) 884 1055 (DEC '77-'98) | required." - mbg KB1FCA | --__--__-- Message: 6 Date: Fri, 2 May 2003 01:13:57 -0500 From: Jeffrey Sharp &lt;jss(a)subatomix.com&gt; To: ClassicCmp Mailing List &lt;cctalk(a)classiccmp.org&gt; Subject: Re: More DEC Stuff Coming Reply-To: cctech(a)classiccmp.org On Thursday, May 1, 2003, Tony Duell wrote: When I was a bit younger I read PC/Computing. Penn Jillette used to write the back page, which I loved to read. In one issue, he recommended that people put commands in their AUTOEXEC.BAT file such that their computer would count down from 10 upon bootup, as if preparing to detonate. He suggested that this be done to have fun with the security people at airports who ask you to turn on your laptop. I wouldn't try this today! :-) I loved the back page of PC/C. As my special homage to it, at every job I've had, I have introduced the term 'Thurman unit' into the corporate vocabulary. Anybody else here remember what a Thurman unit is? -- Jeffrey Sharp --__--__-- Message: 7 From: "Robert F. Schaefer" &lt;rschaefe(a)gcfn.org&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: Fw: Germany: Free RS/6000 ! Date: Thu, 1 May 2003 20:36:50 -0400 Reply-To: cctech(a)classiccmp.org Saw this on spamnet news... ----- Original Message ----- From: "Frank Ebinger" <Frank-Ebinger> Newsgroups: comp.sys.ibm.ps2.hardware Sent: Thursday, May 01, 2003 12:44 AM Subject: Germany: Free RS/6000 ! --__--__-- Message: 8 To: cctalk(a)classiccmp.org From: blstuart(a)bellsouth.net Subject: Re: Heathkit EC-1 Date: Thu, 01 May 2003 19:59:06 -0500 Reply-To: cctech(a)classiccmp.org In message &lt;BAD6D1C8.601C%design.fort(a)ns.sympatico.ca&gt;ca>, The Design Fort DTP wri tes: computer. before Others have already posted some good information on this. However, I thought I'd mention a little thing I wrote up as a handout for a class on the history of computing I taught several years ago. You can find the html version at: http://bellsouthpwp.net/d/r/drbrians/analog/analog.html and a PDF file at: http://bellsouthpwp.net/d/r/drbrians/analog/analog.pdf It's not an in-depth treatment by any means, but it does give a run down on the basic math behind how they work. Brian L. Stuart --__--__-- Message: 9 From: "Keys" &lt;jrkeys(a)concentric.net&gt; To: "cctalk@classiccmp" &lt;cctalk(a)classiccmp.org&gt; Subject: Great Finds Todayin Houston Date: Thu, 1 May 2003 22:23:37 -0500 Reply-To: cctech(a)classiccmp.org I picked up the following items today while searching the thrifts: SGI Indigo2 IMPACT cpu only no KB or monitor with it. HP Visualize C180 cpu only no KB or monitor. HP apollo Series 700 product # A2286A. TRS-80 micro computer system Catalog # 26-01006-G. No monitor or power supply with it. Apple IIc Plus cpu only. Tandy 1000SL cpu only. NBA JAM cassette/cartridge for the Super Famicom. Panasonic R E A L FZ-10 3DO console. --__--__-- Message: 10 Date: Thu, 1 May 2003 22:52:10 -0700 (PDT) From: Ethan Dicks &lt;erd_6502(a)yahoo.com&gt; Subject: Re: Pens for TRS-80 PC-2 plotter - found. To: cctalk(a)classiccmp.org Reply-To: cctech(a)classiccmp.org --- Philip Pemberton &lt;philpem(a)dsl.pipex.com&gt; wrote: I have a number of NOS plotter engines with nearly all (pre) cracked gears. I will be happy to loan you one, but I think you will find that your technique is not suitable for such a small gear. The diameter of the staple wire is about the same as the thickness of the plastic between the bottom of the groove and the bore. There are two gears per engine - X and Y. Same size. Same problem. One on the left, one on the right. I have used similar techniques (with success) fixing Atari joystick actuators (I used to get the joysticks for free from overenthusiastic friends with 2600s) You would have to get the plastic to mate up rather closely where the crack is - the "problem" is not that the shaft slips in the broken gear; it's that the gap causes the gear not to mesh with the driven gear and the gear train binds, preventing X or Y motion. The shaft diameter is 1/20" (1.27mm). If you enlarge the bore by 7%-14% (one or two tenths of a mm) off the inside of the gear, it will freewheel and fly off the shaft then get lost in the carpet. I have some closeup pictures I can e-mail to someone (no ftp access from the machine they are on) :-( The relative sizes of the gears are visible, as are the cracks. -ethan The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com --__--__-- Message: 11 From: "TeoZ" &lt;teoz(a)neo.rr.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: Re: More DEC Stuff Coming Date: Fri, 2 May 2003 02:26:41 -0400 Reply-To: cctech(a)classiccmp.org No idea, does it have somthing to do with Uma Thurman which he mentions alot about in those articles? ----- Original Message ----- From: "Jeffrey Sharp" &lt;jss(a)subatomix.com&gt; To: "ClassicCmp Mailing List" &lt;cctalk(a)classiccmp.org&gt; Sent: Friday, May 02, 2003 2:13 AM Subject: Re: More DEC Stuff Coming train airports --__--__-- Message: 12 Date: Fri, 2 May 2003 03:04:06 -0400 (EDT) From: du651(a)freenet.carleton.ca (Joseph Ballantyne) To: cctalk(a)classiccmp.org Subject: wanted: documentation for IBM 3164 terminal Reply-To: cctech(a)classiccmp.org I want these IBM publications (especially A18-2317): GA18-2317 3164 ASCII Color Display Station Description GA18-2319 3164 ASCII Color Display Station Setup Instructions SY18-2118 3164 ASCII Color Display Station Repair Center Maintenance Info SY18-2120 3164 ASCII Display Station Repair Center Maintenance Information GA18-2563 ALA User's Guide for 3163/3164 GA18-2720 3163 and 3164 Emulating IBM Terminals and DEC VT100/52 Terminals GA18-2736 3163/3164 Enhanced Emulation of TeleVideo 950 I have A18-2318 so don't want more of that, but if you know of other 3164 publications that I don't know about, do please tell. I'm in Ottawa ON Canada. As far as I know, international shipping into Canada is not practical, so I'm interested in antiques that happen to be already in Canada. --__--__-- Message: 13 From: "Witchy" &lt;witchy(a)binarydinosaurs.co.uk&gt; To: &lt;cctech(a)classiccmp.org&gt;rg>, &lt;cctalk(a)classiccmp.org&gt; Subject: RE: More DEC Stuff Coming Date: Fri, 2 May 2003 09:51:22 +0100 Reply-To: cctech(a)classiccmp.org Oddly enough that's exactly what happened......grrrr..... Strange, the only time I've ever received a CRT (black Microvitec to match the Sinclair QL) it was nicely packed and it STILL arrived broken. Well, not *just* broken, smashed completely in fact. Bless parcelforce's cotton socks. cheers -- adrian/witchy www.binarydinosaurs.co.uk - the online computer museum www.snakebiteandblack.co.uk - monthly gothic shenanigans --__--__-- Message: 14 Date: Fri, 2 May 2003 07:37:33 -0400 From: "David de Gruyl" &lt;david(a)bhaermandegruyl.org&gt; To: cctalk(a)classiccmp.org Subject: VAXStation 4000/90 Manuals Reply-To: cctech(a)classiccmp.org I was looking around on the internet (mainly decdocs.org and linked sites, as well as google) and I was unable to locate scanned manuals for the Vaxstation 4000/90. If anyone has a link to such documents, I would appreciate it. My problems revolve around a newly aquired machine which does not appear to be giving me console access over the MMJ port in the rear of the box. As I said, this is a newly aquired machine, and I have not really taken it apart yet, but the manuals would be helpful in any event. David -- David de Gruyl &lt;david(a)bhaermandegruyl.org&gt; --__--__-- Message: 15 Date: Fri, 02 May 2003 08:23:22 -0400 To: cctech(a)classiccmp.org From: John Boffemmyer IV &lt;john_boffemmyer_iv(a)boff-net.dhs.org&gt; Subject: Re: Inquiry about Classic Computers Collectors List Reply-To: cctech(a)classiccmp.org Ooh, Seagate, very helpful definitely one to keep in the address book =) -John At 11:51 AM 4/30/2003, you wrote: the ---------------------------------------- Founder, Lead Writer, Tech Analyst and Web Designer Boff-Net Technologies http://boff-net.dhs.org/index.html --------------------------------------- --__--__-- Message: 16 Date: Fri, 02 May 2003 15:17:03 +0100 From: Paul Williams &lt;celigne(a)celigne.freeserve.co.uk&gt; Organization: http://vt100.net/ To: cctalk(a)classiccmp.org Subject: Re: VAXStation 4000/90 Manuals Reply-To: cctech(a)classiccmp.org David de Gruyl wrote: Manx shows that the Owner's Guide and Service Information are online: http://vt100.net/manx/search?cp=1;q=vaxstation+4000;num=20;on=0 - Paul --__--__-- Message: 17 Date: Fri, 2 May 2003 11:09:37 -0400 From: "David de Gruyl" &lt;david(a)bhaermandegruyl.org&gt; To: cctalk(a)classiccmp.org Subject: Re: VAXStation 4000/90 Manuals Reply-To: cctech(a)classiccmp.org * on [03-05-02 10:27] Paul Williams wrote: I was not aware of manx, thank you. David -- David de Gruyl &lt;david(a)bhaermandegruyl.org&gt; --__--__-- Message: 18 Date: Fri, 2 May 2003 08:35:05 -0700 (PDT) From: James Willing &lt;jimw(a)agora.rdrop.com&gt; To: classiccmp(a)classiccmp.org Subject: More items from the 'Garage'... Reply-To: cctech(a)classiccmp.org Finding myself (yet again) in the unenviable position of needing to free up both some space and a fair chunk of money in a (very) short amount of time, it is time to release a few more items from the 'Garage' to new homes... As I'm still having problems with getting (large) things shipped out, I'll be making one run out to the 'big city' to seek a shipping place for packing and shipping, so everything will go out at once... Items up for purchase: -------------------------------------- Heath H-11a / H27 system H-11a Chassis M7270 LSI 11/2 CPU WHA-11-16 16x16 RAM (2) H11-5 Serial card (2) WH11-5 Serial card H11-2 Parallel card H27 Floppy Interface H27 Dual Drive unit Untested, no docs or disk based software. Includes Heath paper tape based software. $600 plus shipping -------------------------------------- Heath H-10 paper tape reader/punch includes manual Runs but needs cleaning/alignment $150 plus shipping (or $100 if purchased w/H-11 system) -------------------------------------- Heath H-8 / H17 / H37 system H8 Chassis HA8-6 Z80 CPU WH8-64 RAM Multi Port Serial Card H17 Floppy Interface H37 Floppy Interface H17 Dual Drive unit H37 Dual Drive unit Runs, but has issues with formatting floppys... Includes hardware manual set, some software. $400 plus shipping -------------------------------------- Heath 8 inch drive chassis Not real sure of the ID on this one, but someone has suggested that it is H207-40 Drive chassis with one half-height 8 inch floppy drive installed. Blank panel suggests room for a second drive. Untested... no docs. $40 plus shipping -------------------------------------- Polymorphics Systems 8813/2 System Unopened, in original factory packaging! This unit is a twin of the 'amazing smoking computer' seen in the 'This Old Computer' presentation at VCF IV Dual drive, 64k RAM, original manuals and software. System 88 User's Guide System 88 Software Wordmaster This unit has not been out of it's box since it left the Polymorphics factory probably 20 years ago! Untested... (at least by me) obviously... $300 plus shipping -------------------------------------- All items are first come, first served... If you are in the area (SE Kansas) and can pick up then all the better. -jim --- jimw(a)agora.rdrop.com The Computer Garage - http://www.rdrop.com/~jimw --__--__-- Message: 19 Date: Fri, 02 May 2003 12:18:46 -0400 (EDT) From: philip(a)awale.qc.ca To: Patrick Finnegan &lt;pat(a)purdueriots.com&gt; Subject: RE: FS/FT Items Cc: cctalk(a)classiccmp.org Reply-To: cctech(a)classiccmp.org On 30-Apr-2003 Patrick Finnegan wrote: Ah well. -Philip --__--__-- Message: 20 Date: Fri, 02 May 2003 12:48:35 To: cctalk(a)classiccmp.org From: Joe &lt;rigdonj(a)cfl.rr.com&gt; Subject: FA: HP computer manuals; Pascal, Fortran, IPC Reply-To: cctech(a)classiccmp.org I've just finished listing a bunch of HP computer and software manuals on E-bay. A lot of the manuals cover HP-UX and are likly to be applicable to the IPC. Don't just go by the titles, look through the HP-UX manuals to see which one you think are applicable. Also listed HP pascal and Fortran manuals and a DATA I?O Setsite module for the Unisite programmer. see <http://cgi6.ebay.com/ws/eBayISAPI.dll?ViewSellersOtherItems&userid=rigdonj> if interested. Joe --__--__-- Message: 21 From: "Patrick Rigney" &lt;patrick(a)evocative.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: RE: H89 disk formats? Date: Fri, 2 May 2003 10:27:26 -0700 Reply-To: cctech(a)classiccmp.org Dwight, I was going through a stack of HUG diskettes last night just taking stock of what I have, and lo and behold, I have a utilities disk with a HUG-modified H-17 driver that supports two-sided 40- and 80-track drives (hard sector still, of course). Judging from the instructions, it seems that basically replacing SY.DVD on a disk with this new driver (and of course, having the right drive in the machine) would get it working. It seems plausible that the disk could have been made on a system with this driver. It comes with assembly source as well, and even versions for machines upgraded to 3- and 4-Mhz operation. No mods to the controller itself appear to be necessary. Let you know if you'd like a copy. Patrick --__--__-- Message: 22 Date: Fri, 02 May 2003 11:17:12 -0700 From: Doug Coward &lt;mranalog(a)attbi.com&gt; To: cctalk(a)classiccmp.org Subject: Re: Heathkit EC-1 Reply-To: cctech(a)classiccmp.org The Design Fort DTP wrote: Most computer applications are simulations of one kind or another, word processors, spreadsheets, drawing programs, even a desktop GUI. Analog computers are the masters of the art of simulation, but they are not used for mundane simulations like these. Analog Computers run mathematical simulation of physical systems. Everything from the decay of subatomic particles to the interaction of two colliding galaxies. Do you want to: * See the results of a chemical reaction? * Test the design of an automobile tire? * Study the effects of pollution on a fish population? * Model blood flow through an organ? * Understand the effects of lowering the interest rate? * Fine tune the design of the Space Shuttle main engine? * Control flooding on a major river? * Explore new types of music? All of these are physical systems governed by mathematical equations. Analog computers are PURELY parallel and can run programs slower than real time, real time or faster than real time. Simulations can be halted at any point and all aspects of the simulation can be examined. Changes can then be made and the simulation can then be continued from the point it was halted or restart from the beginning. So, analog computers can not only simulate a fixed systems, but can also test 'what if' cases very easily. Analog computers can be a hardwired special purpose type or flexible general purpose type. The EC-1 with only nine amplifiers can be limiting in the size of simulations it will handle. But analog computers don't have the compatibility and the connectivity problem of digital computers. Ten EC-1s could be connected together to form an EC-1 with 90 amplifiers. The only problem would be if more than 9 integrators were used then a slight modification would have to be made to each EC-1 using an integrator to allow one EC-1 to control the mode. An EC-1 can also be directly connected to another brand of analog computer. No problem other than the mode control of integrators. The lure of the EC-1 is that it a inexpensive and compact example of vacuum tube computing. The world is analog. The human mind is analog. Digital computers make a nice hobby, and work just fine for tasks composed of sequential steps, but they are just an over hyped fad. --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog ========================================= --__--__-- Message: 23 Date: Fri, 02 May 2003 11:59:27 -0700 From: Doug Coward &lt;mranalog(a)attbi.com&gt; To: cctalk(a)classiccmp.org Subject: Re: Heathkit EC-1 Reply-To: cctech(a)classiccmp.org Ethan wrote: Just a quick note for now. Resistive sheets belong to a category of analog computing called network analyzers. Fluidics (or fluid logic) can have both analog and digital processes. You can perform boolean operations, but you also can have fluid amplifers. --Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog ========================================= --__--__-- Message: 24 Date: Fri, 2 May 2003 11:48:37 -0700 (PDT) From: "Dwight K. Elvey" &lt;dwightk.elvey(a)amd.com&gt; Subject: Re: Heathkit EC-1 To: cctalk(a)classiccmp.org Reply-To: cctech(a)classiccmp.org cctalk-admin using -f <mailto:cctalk-request@classiccmp.org?subject=unsubscribe> <cctalk.classiccmp.org> <mailto:cctalk-request@classiccmp.org?subject=subscribe> >List-Archive: <http://www.classiccmp.org/pipermail/cctalk/> >X-Original-Date: Fri, 02 May 2003 11:59:27 -0700 >Date: Fri, 02 May 2003 11:59:27 -0700 >X-WSS-ID: 12AC63976885576-01-01 >Content-Transfer-Encoding: 8bit > > Ethan wrote: >> > Just a quick note for now. > Resistive sheets belong to a category of analog >computing called network analyzers. > >> In the same vein (pun intended)... how would fluidic computers >> stack up? Digital? Analog? Mixed? > > Fluidics (or fluid logic) can have both analog >and digital processes. You can perform boolean >operations, but you also can have fluid amplifers. Hi An interesting side note. The power steering of your auto is an example of an analog fluid amplifier. Dwight --__--__-- Message: 25 Date: Fri, 02 May 2003 13:07:02 -0600 From: emanuel stiebler &lt;emu(a)ecubics.com&gt; To: &quot;cctalk(a)classiccmp.org&quot; &lt;cctalk(a)classiccmp.org&gt; Subject: Looking for a 11/44 in denver area / colorado Reply-To: cctech(a)classiccmp.org Hi, Anybody out in colorado with a "spare" 11/44 ? Or even just a power supply for a 11/44 ? cheers & thanks --__--__-- Message: 26 Date: Fri, 02 May 2003 13:41:54 -0700 To: cctalk(a)classiccmp.org From: Geoff Reed &lt;geoffr(a)zipcon.net&gt; Subject: RE:256x4 80NS or faster Reply-To: cctech(a)classiccmp.org the ones I'm trying to match are TMS44C256-80 At 07:54 AM 5/1/03 -0700, you wrote: --__--__-- Message: 27 Date: Fri, 02 May 2003 17:12:52 To: cctalk(a)classiccmp.org From: Joe &lt;rigdonj(a)cfl.rr.com&gt; Subject: RE:256x4 80NS or faster Reply-To: cctech(a)classiccmp.org At 01:41 PM 5/2/03 -0700, you wrote: These are 4 x 256k RAMs. See my previous post about where to find them. Joe all --__--__-- Message: 28 Date: Fri, 02 May 2003 17:24:58 To: cctalk(a)classiccmp.org From: Joe &lt;rigdonj(a)cfl.rr.com&gt; Subject: Re: HP Amigo command set and HFS disk format Reply-To: cctech(a)classiccmp.org Hi Peter, At 08:44 PM 5/2/03 +0000, you wrote: working set I'd be surprised if it is Amigo and uses HFS. What kind of drive is it? I can tell you for certain what kind of command set it uses. You asked me about this a few days ago but I've been busy and forgot to reply. I have a document called "HP Flexible Disk Drive Command Set" that I'm pretty sure contains a description of the Amigo command set. It's an appendix to the HP 9114 disk drive service manual. It's 36 pages long. I can send you a copy or I'll send it to Al K. or anyone else that wants to scan it and post it on the web somewhere. Joe --__--__-- Message: 29 Date: Fri, 02 May 2003 15:36:10 -0700 From: Doug Coward &lt;mranalog(a)attbi.com&gt; To: cctalk(a)classiccmp.org Subject: Re: Heathkit EC-1 Reply-To: cctech(a)classiccmp.org Ethan wrote: I wrote: Oops, I need to correct this. Resistive sheets belong to a category of analog computing called passive element computers in which network analyzers are probably the biggest and most well known examples. But it also includes * conductive sheets * electrolytic tanks - create 3 dimensional simulations * resistor networks * pin and rod systems * resistor and capacitor network Passive element computers normally models a physical system using only passive R-L-C components, and solve equations in which dimensions in space are the independent variables, rather than time. Applications for passive element computers include things like the simulation of * reception patterns of a receiving antenna * temperture, and pressure flow in a nozzle * diffusion of material at a transistor junction Here is an example: You solder together a large two dimensional matrix of resistors (all the same value). At each node where the resistors are soldered together you solder a capacitor connected to ground. You then apply a voltage to one corner of this resistor and capacitor network. As the current flows through the network it begins to charge the capacitors. You now have a computer that simulates the heat flow across a metal plate the size of your matrix, both over distance and over time. Without the capacitors you are simulating only over distance. A resistive sheet is a resistor matrix with a very fine mesh. The finer the mesh, the better the simulation. "Rubber-sheet computers have been used extensively to study the trajectories of electrons and gas ions in vacuum and gas tubes" -Doug ========================================= Doug Coward @ home in Poulsbo, WA Analog Computer Online Museum and History Center http://dcoward.best.vwh.net/analog ========================================= --__--__-- Message: 30 Date: Fri, 2 May 2003 15:47:20 -0700 (PDT) From: Ethan Dicks &lt;erd_6502(a)yahoo.com&gt; Subject: Re: Heathkit EC-1 To: cctalk(a)classiccmp.org Reply-To: cctech(a)classiccmp.org --- "Dwight K. Elvey" &lt;dwightk.elvey(a)amd.com&gt; wrote: I don't think _my_ auto (1968 Beetle) is an example of that. :-) -ethan The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com --__--__-- Message: 31 Date: Fri, 2 May 2003 16:10:32 -0700 (PDT) From: Ethan Dicks &lt;erd_6502(a)yahoo.com&gt; Subject: Neat find (in my own junk bin!) - NS 8073 To: cctalk(a)classiccmp.org Reply-To: cctech(a)classiccmp.org I was collecting all of my hex LED displays into one place so I can test them before embarking on a new 1802 project. I even dug into my old box of spare Elf parts and pulled out a small board with four TIL311 displays attached to a small microcontroller board - some kind of monitor/indicator given to me by the brother of the guy that got me into the 1802 as a kid. He had given it to me to harvest the TIL displays. I finally *looked* at the attached board to see what was on it - an NS 8073! I used to have access to an RB5X robot when I was a volunteer at the local science museum in High School - same chip - the hot-item-for-a-brief-moment microcontroller with embedded Tiny Basic. Now, rather than harvest the parts, I'm very tempted to reverse-engineer the schematic of the little board to see what it does. Looks like there's a small bipolar PROM, a 6116 SRAM, one or two TTL chips, and the TIL311s driven by the output pins of the 8073. The whole thing is only a few square inches. The funny thing is that I'd recently picked up a few 8073s from ePay to play with. I was planning on hooking them up to some 8031-based 8-line LCD displays I got for a few bucks each (originally out of some flavor of AT&T office phone, IIRC). Sort of the Classic Attraction principle in reverse - new toys attracting alike items Has anyone else played with the 8073 (in an RB5X or not)? If they hadn't been so pricey 20 years ago, I might have gotten one to experiment with back then. -ethan The New Yahoo! Search - Faster. Easier. Bingo. http://search.yahoo.com --__--__-- Message: 32 From: ard(a)p850ug1.demon.co.uk (Tony Duell) Subject: Re: Looking for a 11/44 in denver area / colorado To: cctalk(a)classiccmp.org Date: Sat, 3 May 2003 00:35:53 +0100 (BST) Reply-To: cctech(a)classiccmp.org Are you missing the PSU, or do you have one that doesn't work? Although it's by no means my favourite PSU to work on, it is possible to repair these supplies and live to tell the tale (!). If you're happy working on SMPSUs (with lethal 400V DC supplies everywhere), I can probably help you find the fualt -tony --__--__-- Message: 33 Subject: Northgate OmniKey Ultra From: David Holland &lt;dholland(a)woh.rr.com&gt; To: Classic Computer Talk &lt;cctalk(a)classiccmp.org&gt; Date: 02 May 2003 20:28:24 -0400 Reply-To: cctech(a)classiccmp.org Howdy all, I stumbled across a Northgate Omnikey Ultra (not UltraPlus) keyboard in the local thrift store, and picked it up for 5$. (It had a nice feel, kinda PS/2'ish, and no stupid windows, or various other internet/volume controls/etc keys.) I've had it for about a week now, and just can't get used to funky arrangement of the arrow keys in the middle, and the F keys on the left just throws my Unreal Tournament gaming off. (See http://www.northgate-keyboard-repair.com for some piccy's) Anyways, I gather these things were something of a 'gotta have it' keyboard at one time, and were bloody expensive. Thought I'd offer it up here, for 5$ + shipping before it goes downstairs in the basement to collect dust. One thing to note, is its got one of the AT style connectors in back, so you'll need an adapter if your going to plug it into a PS/2 style connector. (No, you can't have the one I was using) Visually, its pretty clean, there's a little green stuff on the bottom where I attacked (mostly ineffectively) some sticky stuff w/ a scrubbing sponge, but the top is (imho) nice and clean. I think all the keys work, however, there might be a few F keys I didn't hit the week I was using it. I gather it might of came with some extra keycaps when it was new, so you could move around control/shift. I do not have those. Anyways, enough disclaimers, Anyone want it? (I think this is at least on-topic) David --__--__-- Message: 34 Date: Fri, 2 May 2003 18:11:48 -0700 (PDT) From: "Dwight K. Elvey" &lt;dwightk.elvey(a)amd.com&gt; Subject: Re: Heathkit EC-1 To: cctalk(a)classiccmp.org Reply-To: cctech(a)classiccmp.org >From: "Doug Coward" &lt;mranalog(a)attbi.com&gt; > > Ethan wrote: >> > I wrote: >> Resistive sheets belong to a category of analog >> computing called network analyzers. > > Oops, I need to correct this. > Resistive sheets belong to a category of analog Hi This is the place to describe my method of finding shorts on power planes. This is very much like the resistive sheet methods. You place a power supply across one of the two planes that has shorts between them, such that about one or two amps is flowing in current limit. You place one lead of a volt meter on the opposite plane and then probe with the other lead on the plane with the current flowing across it. You find a line where the meter reads zero. Now, move the power leads to an orthogonal corners. Again fine the line of zero volts. Where the two lines cross, you'll find the short. There are variations of this method for finding shorts between traces and even multiple shorts. Dwight --__--__-- Message: 35 Date: Fri, 2 May 2003 18:45:02 -0700 (PDT) From: Vintage Computer Festival &lt;vcf(a)siconic.com&gt; To: Classic Computers Mailing List &lt;cctalk(a)classiccmp.org&gt;rg>, &lt;cctech(a)classiccmp.com&gt; Subject: VCF Europa 4.0 Reply-To: cctech(a)classiccmp.org This weekend is VCF Europa 4.0 in Muenchen, Deustchland! Complete information is on the VCF Europa website: http://www.vcfe.de I look forward to reports from those that make it since I won't be present this year :( -- 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 * --__--__-- Message: 36 To: cctalk(a)classiccmp.org Subject: Re: Northgate OmniKey Ultra From: Frank McConnell &lt;fmc(a)reanimators.org&gt; Date: 02 May 2003 18:33:14 -0700 Reply-To: cctech(a)classiccmp.org David Holland &lt;dholland(a)woh.rr.com&gt; wrote: So we know it's one of the sort with the Omni key instead of an inverted-T layout. If it's an Ultra, it should also have the function keys across the top. Not that bad. In the mid-1990s you could get them for about $70, which seems expensive for a keyboard, but for those of us who really wanted the control key to be to the left of A and didn't want to have to fuss with driver software to make it happen, it was well worth it. If you want expensive, go check out the Avant Stellar! That is reportedly the modern Northgate OmniKey, and it sells for about $150. So, some questions to help folks ID what you've got. Is the control key to the left of A? Where are the switches? Poking out the back, or hidden under the "OmniKey" flip-top lid, or not present at all (flip the lid up, see nothing)? Not present at all means it is a late-model programmable keyboard. They had firmware bugs, and the "fix" was "remove the EEPROM that holds the key remappings". Somebody better! -Frank McConnell --__--__-- Message: 37 From: "Greg Elkin" &lt;cctech(a)bouncy-castle.demon.co.uk&gt; To: cctalk(a)classiccmp.org Date: Sat, 03 May 2003 10:30:30 +0100 Subject: MicroVAX4000/5050A drive sleds Reply-To: cctech(a)classiccmp.org Just acquired a VAX 4000/505A (thanks Paul!) with no disks installed - anyone got the details for adding a raw DSSI disk to one of these things ; the chasis has a drive drive backplane at the top with 4 edge connectors, into which a drive sled of some form slots in. I need to knock up whatever is on the sleds, drive LEDs & switches. Unless anyone has some excess sleds that I could liberate?... Ohhh, wonder if the MDS pils of docs has any details on this - off to look now :) ta greg --__--__-- Message: 38 Date: Sat, 3 May 2003 22:52:02 +1200 Subject: TRS-80 / System 80 From: Alan Greenstreet &lt;aeg(a)paradise.net.nz&gt; To: cctalk(a)classiccmp.org Reply-To: cctech(a)classiccmp.org Hi All I have just acquired a System 80 MkII (distributed in Australasia by Dick Smith Electronics). On power up I get the LED power light ok but a screen full of random characters, the reset switch does nothing. I've had it apart and there are no loose connections or chips on the two main boards and no sign of any burnt or expired components. Has anyone had similar problems and / or knows what the problem is? Thanks Alan --__--__-- Message: 39 From: "Robert F. Schaefer" &lt;rschaefe(a)gcfn.org&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: Re: MicroVAX4000/505A drive sleds Date: Sat, 3 May 2003 07:15:32 -0400 Reply-To: cctech(a)classiccmp.org ----- Original Message ----- From: "Greg Elkin" &lt;ClassicComputers(a)bouncy-castle.demon.co.uk&gt; To: &lt;cctalk(a)classiccmp.org&gt; Sent: Saturday, May 03, 2003 6:40 AM Subject: MicroVAX4000/505A drive sleds Cant help with the sleds, but it is possible to run DSSI drives without the ID plug, see http://www.mcmanis.com/chuck/computers/vaxen/dssi-plug.html. Short answer: logon to the console of the drives' embedded processor and tell it it's new address! Can your peasea do that? ^_^ Bob --__--__-- Message: 40 From: "Bob Clark" &lt;bob.c(a)dial.pipex.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: Gnomes Date: Sat, 3 May 2003 15:19:40 +0100 Reply-To: cctech(a)classiccmp.org Yes I remember Bob Clark (http://www.classiccmp.org/pipermail/cctalk/2003-January/014196.html) because I am he, and I remember Peter Turnbull too. This is getting silly, because this week I have relocated Bill Olivier (CommunITel) and Lindsay Reid (Viewfax 258), mostly by accident. Best regards, Bob --__--__-- Message: 41 Date: Sat, 03 May 2003 11:00:47 To: cctalk(a)classiccmp.org From: Joe &lt;rigdonj(a)cfl.rr.com&gt; Subject: HP's Amigo Protocall & HP IPC Reply-To: cctech(a)classiccmp.org Yesterday I was cleaning out and putting some excess HP manuals on E-bay. One of the books that I found, HP-UX Concepts and Tutorials - Device I/O and User Interfacing, looked interesting but was still sealed so I listed it without opening it to see exactly what it covered. (I'm not real big on HP-UX). Today I found another copy of the same manual. It was alreadu opened so I've been reading through it. First, it DOES cover the HP IPC (Intergral Personal Computer) along with the HP 9000 Series 200/300, Series 500 and Series 800 computers. Each function that only applies to certain systems is flagged and there are appendices for the IPC and each of the other series that list and describe any peculiarities of that implementation. BUT what was even more surprising is that it states that many of the HP printers use the Amigo protocall! For the ones of you that aren't familiar with HPs that protocall is used for low end disk drives. This is the first time that I've heard that ! was also used for printers. Besides that statement it also has a "non-trivel" programming example of an "HP-IB driver that uses the Device I/O Library subroutines to drive various models of the HP Amigo protocall HP-IB printers". This might be a good starting point for anyone that wants to write and Amigo driver to talk to disk drives. Are you listening, Sergio and Peter? This book is definitely a keeper! It describes the HP-IB and GPIO interfaces for the various systems in detail including their status and control registers. It then describes how to use the DIL (Device I/O Library) included with HP-UX to set, read and control the interfaces and how to link calls to the DIL from Fortran, Pascal and Assembly language programs. It looks like a great source of info for anyone that wants to write their own device drivers or wants low level control of HP-IB and GPIO interfaces under HP-UX. I'm keeping this copy but I have another one that's already on E-bay. I know this sounds like a shameless plug but it's not. I'm just really impressed with this book. Joe --__--__-- Message: 42 From: "Bob Clark" &lt;bob.c(a)dial.pipex.com&gt; To: &lt;cctalk(a)classiccmp.org&gt; Subject: Fw: Viewfax 258 Date: Sat, 3 May 2003 16:07:24 +0100 Reply-To: cctech(a)classiccmp.org ----- Original Message ----- From: Bob Clark To: mel(a)pullen.com ; danny(a)spesh.com ; Glyn Philips ; Lindsay Reid Sent: Saturday, May 03, 2003 3:35 PM Subject: Viewfax 258 My god what a week this has been for finding old friends. First Bill Olivier, then Sue wakes me up this morning (or afternoon possibly) - there's a Lindsay Reid on the phone, would I like to talk to him? What, talk to Lindsay for the first time in 15 years, yawn oh ok then if I must. This three days after we had complained that Lindsay had gone completely unfindable on the web, and was obviously dead. What we didn't do of course was try www.viewfax.com. Lindsay was ringing to ask if anyone remembers or better still knows a man name rings strong bells with me, but I can't remember why. Anyone? (My extensive researches this afternoon reveal that his books for kids are still popular in Western Australia, assuming this is the same guy: http://henrietta.liswa.wa.gov.au:90/search/aFox-Davies/afox+davies/1,3,25,B/ e xact&FF=afox+davies+dick&1,2 ) This may be a justified cause for an NTK (http://www.ntk.net/) appeal Dan, because... ... the good news is that Lindsay still has Viewfax 258 backed up on 5.25" floppy disks. There's quite a few disks, and we'd have to sort through them somewhat to find the Gnomey bits. But Lindsay is happy to loan his disks to Glyn the man with the archaic hardware, all he needs is his address. Then he'd like his disks back. I figure we could probably blow the lot onto the first quarter inch of a CD for him. So our dream may come true and we'll have both the Gnome on Prestel and the Gnome at Home splurged all over our shiny new web site. Meanwhile, please admire my wonderfully wonky first-stab character set one more time... Bob PS Late-breaking news, Peter Turnbull rediscovered too: http://www.classiccmp.org/pipermail/cctalk/2003-January/014196.html [demime 1.01a removed an attachment of type application/octet-stream which had a name of viewfax7.jpg] --__--__-- Message: 43 Date: Sat, 3 May 2003 08:11:43 -0700 (PDT) From: Vintage Computer Festival &lt;vcf(a)siconic.com&gt; To: Classic Computers Mailing List &lt;cctalk(a)classiccmp.org&gt;rg>, &lt;cctech(a)classiccmp.org&gt; Subject: VCF Europa Live Reply-To: cctech(a)classiccmp.org I fixed the VCF Europa Live pages from the vintage.org server. To see live pictures from VCF Europa 4.0, go here: http://www.vintage.org/2003/europa/ ...and click on "VCF Life". Look for the guy in the Blue Shirt and that will be Hans (Hansi Smurf). -- 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 * --__--__-- Message: 44 Date: Sat, 03 May 2003 15:16:30 To: cctalk(a)classiccmp.org From: Joe &lt;rigdonj(a)cfl.rr.com&gt; Subject: Re: HP's Amigo Protocol, HFS Reply-To: cctech(a)classiccmp.org At 05:53 PM 5/3/03 +0000, you wrote: It's definitely an Amigo drive then. serial number begins with 23 so I guess that it Correct. If I look at the drive with an HP 9000 332 it My initial thought was the Amigo wouldn't suppport HFS but after some thought I don't see any reason that it wouldn't. I don't know much about the internals of the drives so I don't know what those might mean. I looked at the docs that I have on the 9133XV and I don't see anything with those numbers. Check them and let me know if that's the right numbers. If it's not, tell me the correct numbers and I'll see if they match anything in the specs. That's odd. Is the drive bad? Most systems identify a 9134 as a 9133 with no floppy drive. What kind of HP system are you checking these on and what BootROM does it have? Does the HP system show the 9134? What letter model is the 9134? and a 7907 drive (this identifies itself correctly but I'm not sure of the model numbers but it appears that HP made both HP-IB and MAC versions of the 7906. I believe that they used an adapter (pn 12745C/D) to convert from MAC to HP-IB interface. The two models that I have listed in my HP 9000 Configurator manual are 7906M and 7906MR. The docs also list 7906C/D and I THINK those are M/MR models with Option 102 installed. No idea what option 102 is. Reading further I found, "There is no HP 9000 interface for the 13037 controller <I>without</I> an HP-IB adapter. The 7906H/HR ICD disks sare known <I>not</I> to work. The usability of the 7906S(slave) 7906A/B and 7905A disk is not known." Italics <I> are HPs. I hope that confuses you as much as it did me! BTW the 13037 is some kind of MAC interface. I had one but gave it to Eric. BTW HP says that these drives are not supported under BASIC, HP-UX or Pascal! (at least at that time) It also says that no support is planned for any HP 9000 system. Also they state that these drives are obselete and recommend that people use the newer and more economical 7907A drives. I looked under the 7907 description to see if it would read the 7906 media but it doesn't say. However the 7907 tape media was 20.5 Mb vs 9.8Mb so it is different. The 7908 drive is described as 16.6 Mb fixed disk and a "1/4 inch "88140" shared controller tape drive". Most (all?) of the newer drives that incorporate tape drives are also described as 88180 tape drives so the drive and media used in the earlier 7906 and 7907 are different from the later stuff. Joe --__--__-- Message: 45 Subject: Re: Northgate OmniKey Ultra From: David Holland &lt;dholland(a)woh.rr.com&gt; To: Classic Computer Talk &lt;cctalk(a)classiccmp.org&gt; Date: 03 May 2003 15:48:02 -0400 Reply-To: cctech(a)classiccmp.org On Fri, 2003-05-02 at 21:33, Frank McConnell wrote: It does. Across the top, and on the left. Saw'm for as much as 198$ a couple of places.. (ouch) No, control-key is in the bottom left hand corner. (I guess its not quite identical to the picture on northgate-keyboard-repair.com - My bad.) The bottom corner keys are laid out something like so: Capslock Shift Control [Grey < & > key] Alt Under the lid are a set of dip switches and what looks to be a orange reset switch. It claims to be Rev 7.03 on the back of the keyboard. > > Not present at all means it is a late-model programmable keyboard. > They had firmware bugs, and the "fix" was "remove the EEPROM that > holds the key remappings". > > > > Somebody better! I've got a couple of follow up's already. (Hopefully they're paying attention when I say: I'll find out what shipping/postage is to their respective zip code(s) on Monday, once I can figure out what kinda box I can find) David --__--__-- Message: 46 Date: Sat, 03 May 2003 13:09:08 -0700 From: Marvin Johnston &lt;marvin(a)rain.org&gt; To: ClassicCmp &lt;cctalk(a)classiccmp.org&gt; Subject: Soroc IQ120 Chip Problem Reply-To: cctech(a)classiccmp.org I finally started digging in to find out what was wrong with a couple Soroc IQ120s. The first one was easy; just a memory chip (2102) that went bad. The second one is a bit tougher. I *think* I have the problem narrowed down to a Signetics 82S201 PLA, and therein lies the problem. Is there a replacement chip available, and is the coding of the chip available? If the coding is not availble, can I just go through a counter on the input and record the output states to come up with the chip programming? Needless to say, I am not real familiar with these devices :). There are two of these devices in parallel, and when I pull out the supected bad one (one makes no difference, pulling the other one starts the screen display again), the screen starts to work again. My suspicion is that the two are in parallel to increase the drive to the other chips. There are probably more problems since I don't hear the beep when the unit is turned on. The keyboard unit has already been checked out on the working Soroc. Any thoughts or comments? --__--__-- Message: 47 From: ard(a)p850ug1.demon.co.uk (Tony Duell) Subject: HP9915 To: cctalk(a)classiccmp.org Date: Sun, 4 May 2003 00:48:32 +0100 (BST) Reply-To: cctech(a)classiccmp.org I've recently had an HP9915 on the bench. This, as many of you are aware, is related to the HP85, but it's in a metal case with no printer, keyboard (although there is a keyboard connector on the back) or monitor (again, there's a composite video output on the back). Some details of the insides : Almost all the HP ICs are the same as those in the HP85 (CPU, CRT controller, RAM controller, Keyboard controller, ROMs, I/O buffer, even the printer controller is there). Much of the rest of the circuitry is similar to that in the HP85 (PSU, etc). There's an extra 8048 microcontroller that handles the power-on reset, self-test and autostart keys, and the front panel LEDs. It connects to the HP CPU via an I/O Translator IC, which is the same as the one used in the HP85 interface modules. Also linked to this microcontroller is a PCB that can contain up to 8 2716 (or 2732 if you rearrange the links) EPROMs. I have no idea (yet) how to format data to put in said EPROMs. The large board in the bottom of the case contains the PSU, and much of the logic circuitry. There are 6 'option ROM' spaces at the back of this board, identical to those in an HP85 ROM drawer. The PSU provides the same voltages, in much the same way, as the HP85 CPU. The output of the transformer is rectified and fed t oa switching converter (U30, 3524 is the controller IC) to provide +12V, -5V and -12V. This poweres a second switching converter to provide +5V. The +6V is obtained by a linear regulator. There is a crowbar (Q4) which will short out the input to the first PSU if the +12V line rises too high. This will then blow the mains fuse (something to check if the mains fuse blows at switch-on -- maybe Q5, PIC645, the first chopper is shorted). Another PCB plugged into the left edge of the main PCB contains the video RAM, printer chip (used here for the timers, I suspect), buffers/clamp networks for the keyboard and control connectors, a state machine to generate the video sync signals, and the composite video mixer. It has been suggested this is the 'operator interface' mentioned on the options box on the back, but I think not. I think this must be a standard part of the machine, and that the 'operator interface' is the keypad on the front. Talking of the keypad, the top 4 keys are connected as the k1-k4 keys of the HP85 keyboard. The blue key is connected as the shift key. On the back of the machine (actually on the vertically-mounted PCB that I mentioned a couple of paragraphs back) are 2 D connectors. The pinouts seem to be : Keyboard (DB25) 1 : chassis ground 2 : R0X (this is Row 0 output, buffered) 3 : R1X 4 : R2X 5 : R3X 6 : R4X 7 : Logic ground 8 : Logic Ground 9 : R5X 10 : R6X 11 : R7X 12 : R8X 13 : R9X 14 : C0X (Column 0 input, buffered) 15 : C1X 16 : C2X 17 : C3X 18 : C4X 19 : C5X 20 : C6X 21 : C7X 22 : KSX/ (Shift key, connect to logic ground to shift) 23 : KCX/ (Control key, ditto) 24 : KCLX/ (Caps lock key, ditto) 25 : SpkrX (Speaker output, return to logic ground) Control connector, DA15 1 : LED0X (High if top LED on frontpanel is on) 2 : LED1X 3 : LED2X 4 : LED3X 5 : LED4X 6 : LED5X 7 : LED6X 8 : LED7X 9 : RunX/ (RUN LED output) 10 : TestX (selftest LED output) 11 ; PWOX (Power OK output) 12 : Logic ground 13 : KeyStartX/ (ground for autostart key) 14 : KeyStX/ (ground for self test key) 15 : Chassis ground. The keyboard matrix would appear to be the same as that in the HP85 OK< a couple of questions 1) What is the impedance of the speaker in the keyboard (presumably between SpkrX and logic ground? 80 ohms? 2) What is the OD of the tape drive roller? Mine has decayed (what a suprise), and I need to rebuild it. It should be the same as the roller in the HP85, the HP9825, HP9815, etc.... -tony --__--__-- Message: 48 Date: 3 May 2003 23:53:08 -0400 Date: Sat, 3 May 2003 23:53:07 -0400 From: "R. D. Davis" &lt;rdd(a)rddavis.org&gt; To: cctalk(a)classiccmp.org Subject: Re: Another rubber capstan turns to mush Organization: why? Reply-To: cctech(a)classiccmp.org Quothe chuck(a)mail.schillernet.us, from writings of Sat, May 03, 2003 at 08:58:49PM -0400: Oops... it appears that you didn't use the /LCV (lowest capstan viscosity) flag ;-) to prevent the tar command from attempting to turn the rubber capstan into a tarry substance. :-( -- Copyright (C) 2003 R. D. Davis The difference between humans & other animals: All Rights Reserved an unnatural belief that we're above Nature & rdd(a)rddavis.org 410-744-4900 her other creatures, using dogma to justify such http://www.rddavis.org beliefs and to justify much human cruelty. --__--__-- Message: 49 To: cctalk(a)classiccmp.org Subject: Re: HP Amigo command set and HFS disk format From: Frank McConnell &lt;fmc(a)reanimators.org&gt; Date: 03 May 2003 22:10:23 -0700 Reply-To: cctech(a)classiccmp.org Joe &lt;rigdonj(a)cfl.rr.com&gt; wrote: I think Joe sent me a copy of this a while back. Anyway, I fished it out of the pile in the living room and fed it to the scanner, with the result being at <http://www.reanimators.org/tmp/hpfddcs.pdf> (1183KB) for the time being. Joe, are you sure this was in the 9114 service manual? Not the 9121 or 9133? I'm just thinking it wouldn't make much sense being in an HP-IL drive manual. -Frank McConnell End of cctech Digest