On 10 May 99 at 19:06, Tony Duell wrote: You're a rotten guy Tony. Even if I'm not into fixing it right now you're going to force me into it. Be it henceforth be noticed that I L Walker relinquish control over one H89 computer and offer it up into common domaine. Take that guilt merchant ! (but I'll still save the tips, just in case ) ciao larry lwalker(a)interlog.com Let us know of your upcoming computer events for our Events Page. t3c(a)xoommail.com Collectors List and info http://members.xoom.com/T3C

On 11 May 99 at 19:04, Tony Duell wrote: Sighhh. But like you I have a backlog of machines waiting for my ministrations. Not to mention the 8 mantle radios hoping I can pass them on to a comfortable yuppie home at a comfortable price, nor the 3 in bits reel to reels. I will admit that my resolve to put it on a back shelf is weakening under the forcefull assault of logic and passion for old computers that I'm seeing. Up Tesla !! ciao ........,,, larry lwalker(a)interlog.com Let us know of your upcoming computer events for our Events Page. t3c(a)xoommail.com Collectors List and info http://members.xoom.com/T3C

Upon the date 07:06 PM 5/10/99 +0100, Tony Duell said something like: It'll do something if the Term board/video board functions :) That's why I suggested first seeing if the video section and Terminal on "Local" works. -- snip -- That's exactly my point Tony. Nonetheless, regardless of the label used, you're more of a wellspring of technological documentation -at least regarding computers- than I've ever experienced. I try to latch onto any technical docs that I can that is related to any kind of electronic device. I've often been pleasantly surprised when I either got for myself or had to fix for someone an early radio or somesuch :) "More info" . . . yes indeed, that's the influence of the good old Heath Company in writing those manuals :) In my mind, and other Heathkit collectors' minds, they set the standard in how a tech manual should be written and presented. Regards, Chris -- -- Christian Fandt, Electronic/Electrical Historian Jamestown, NY USA cfandt(a)netsync.net Member of Antique Wireless Association URL: http://www.ggw.org/awa

Upon the date 07:17 PM 5/11/99 +0100, Tony Duell said something like: If he Indeed if they were "professional" then they would be accomodating to get the so-called "too valuable to look at" docs in a form which could be looked at by folks like us or other types of researchers. I've been in my old house since mid-1979. I found tucked away in the 'museum room' and library some tech manuals I'd not seen for 18 years (really). They had been shoved into a corner or crevace either because of house remodelling over the years or just getting too much stuff at one time. Now that I have a handle on what I own now, and have it segregated into the new library/museum area in the newly remodelled attic at this house, I can finally set to getting some sort of organization. With that I can make a simple catalog of the archive. For example, I have at least 250 to 300 Technical manuals for US Army Signal Corps, Navy or Air Force radio gear and some early radar -40's to '60's vintage. They are an important archive to share info with my other military electronics collector colleagues but I have to hunt, and hunt to see if I even have a particular manual. An inventory of the TM or T.O. or NAVSHIPS document number is needed. As to my rather extensive radio, television and test equipment manuals, and a more limited computer manual collection, the filing system will be slightly more complicated as there's no standardized numbering system and nomenclature to file by. It'll just have to be type of gear, manufacturer and model/part number I suppose. Somehow we figured that :-) Except for recent radios/TV's/home entertainment stuff, I too have a large source of schematics. Primarily from the late 60's all the way back to the early 20's. My archive is primarily North American built gear while I assume the large majority of yours is UK/European built gear. Same for computer gear although there seems to have been a lot of NA computer gear sold in UK/Europe -particularly like DEC, IBM, Commodore, etc. :-) I guess with Heath because the schematics/parts lists were already at hand for the kit-versions, the manual writers carried them over to the factory assembled gear. My Zenith Z19 manual has the same info as the Operator's Manual for the Heath H19 plus a few extra things like DEC VT52 emulation, ANSI escape sequences, etc. I always enjoyed that "learn a lot about it" part :) I was the type of geek who would use them for recreational reading when I wanted to relax or just before bed. Back in the early 80's I discovered HP had a Service Manual for their 9825. We had two at my company (both in my collection now :) so I asked the boss to spring for the $35 (IIRC) cost for one. $35! Hmmm, not bad. Back then that was a price for a relatively thick manual for other HP gear. Therefore this one must contain a wealth of info to maintain the 9825s! Well, when I got it the only schematic was for the power supply board. Two variants at that. Part numbers for the several other boards and some troubleshooting info was the only additional info in that somewhat thin manual. Sheesh. What a let-down . . . Since then, especially with my 1981 vintage HP250/30 business computer, I discovered the HP computer division (in Boise, Idaho IIRC) never published much technical info on their products. Regards, Chris -- -- Christian Fandt, Electronic/Electrical Historian Jamestown, NY USA cfandt(a)netsync.net Member of Antique Wireless Association URL: http://www.ggw.org/awa

Christian Fandt <cfandt(a)netsync.net> wrote: Hi Larry As Chris said, it is surely a H89. I built the one I have, way back when. I should also have docs someplace. You might look to see if it has soft sectored controller or hard. You can tell because the controller board of the hard sectored had a UART, as I recall, instead of one of the more standard FD- controller chips, like the soft sectored board had. The video part was actually a H19 terminal, hard wire to the processor board. This means, you should be able to run the video part as a serial terminal and the processor part with another terminal. This will help you figure out what is failing. Again, I or someone else will have to find the pinout for the molex connector and baud rate of the video part. Dwight

ard(a)p850ug1.demon.co.uk (Tony Duell) wrote: Thanks Tony I couldn't remember what was there but did remember it was a serial chip and not a disk interface chip. --snip-- --snip-- I'd forgotten about the Off Line key. Like Tony says, get the terminal part working first or did he say "They're Great!" ;) I don't remember the baud rate, that it was set for, but 9600 seems to stand out in my mind. Dwight

On 10 May 99 at 19:40, Tony Duell wrote: BINGO ! As usual you are right on. So I think it's safe to say it's an H89. Now my problem is whether to keep it. Unless we can get space increasingly many old puters are going into the trash or limbo. About time some of these computer companies offered at the least some space for storage for people like us. They want to take but never offer back into the community. With the free space most have they could enable us to get this history of their product out of the garret rooms and garages. But not publicity attractive enough to bother with. Bastards ! Sorry I lost it .Rant OVER. ciao larry lwalker(a)interlog.com Let us know of your upcoming computer events for our Events Page. t3c(a)xoommail.com Collectors List and info http://members.xoom.com/T3C

On 10 May 99 at 9:24, Sellam Ismail wrote: Nope , the numerical pad is the rightmost keys, Itdoes have color keys on the function line. They are Off Line 5 F-keys Erase 3 color keys Reset Break The Sound board ( interesting because the main chip was labelled "Sound", with only a couple of other numbers ) has one resistor setting free like the guy had some problems and was trying to correct it . there's some burn where it and the next resister were connected I guess I'll follow Tony's test procedures to see if I can get it going, but if there is someone on the list who desires one, I will include the fdd H57 I found 3 weeks ago which I'm sure, based on Rax"s Theorum , was what attracted it to me in the first place. Rax's theorum mentions nothing about space for storage !. Hate Rax, Hate Rax's Theorum. Hare Computers, Hate Land lords !! Hate inflatable rubber sex dolls with an attitude. ciao larry lwalker(a)interlog.com Let us know of your upcoming computer events for our Events Page. t3c(a)xoommail.com Collectors List and info http://members.xoom.com/T3C

On 11 May 99 at 19:00, Tony Duell wrote: Yep, an AY-3-8910 guy had It has a 10pin connecter plugging into part of an expansion connector and another 10 line cable hard-wired to the Serial I/O card. BTW I see by Hans list that it was manufactured in 78. Didn't realize it was that early. Are there programs out there for it ? Could it use CP/M 2.2 ? Were H-87 external drives commonly used on this machine ? I found the ffd about a block away 2 wks. earlier, but someone could have taken the H-89 and then decided they couldn't use it. ciao larry lwalker(a)interlog.com Let us know of your upcoming computer events for our Events Page. t3c(a)xoommail.com Collectors List and info http://members.xoom.com/T3C

ard(a)p850ug1.demon.co.uk (Tony Duell) wrote: Hi Years ago, I bought two half height drives and put them in the slot for the full sized. I used just the single controller to drive both and it worked with HDOS as two drives. I'd have to look to see if I did it with twisted lines or jumpers on the drives. I did have to file the opening a little to take two drives. Dwight