Try ebay seller tmg or ex-tmg 'the mac service group' the have lots of surplus HP stuff and had several integrals on epay. Losts of IPC images can be downloaded here http://www.coho.org/~pete/downloads/IPC/ If you search the archive you can find a rather usefull discusion between Tony Jos and Joe about repairing and expanding the integral. I found the article, how to upgrade the ram expansion board to 1M, very usefull . Rik ----- Original Message ----- From: "Roman Szeremeta" <roman.szeremeta at actewagl.net.au> To: "General Discussion: On-Topic Posts Only" <cctech at classiccmp.org> Sent: Thursday, April 24, 2008 10:51 PM Subject: Re: HP Integral PC Manuals?

Tony Duell wrote: I don't know... you might be right that it's an electroluminescent display, it's definitely a different color than the other plasma-based machines I have (IBM P75, Compaq Portable 386). Didn't cross my mind that there were other display types :). Yeah, I took it apart, cleaned out the old grease and applied a tiny amount of light oil on various joints. It seems to be working fine so far. That's about as far as I've the machine apart thus far. I need to give the printer a going-over and find some ink for it, haven't looked into that yet. Cool, I'll keep those instructions around for reference in case I need to take it all the way apart (or start feeling adventurous). My Integral is very clean (even came with the "dummy" shipping floppy in the drive when I got it) so I didn't feel the need to take it all the way apart to clean. I have both a 512k expansion and the RS-232 card installed in mine, I'll have to look up your article and see about upgrading the 512k card to 1M... Agreed. It also would have been nice if they'd put a bit more in the system ROM. As it is, there's absolutely no software or tools aside format disks without the Utilities floppy! A simple text editor and other basic desktop apps (clock, calendar, calculator, terminal, etc...), or maybe a just a small unix shell and utilities built-in would have made this machine a lot more useful. As it is, I'm swapping floppies all the time to do anything. Tried compiling a C program -- two disk swaps and about 2 minutes later, and I had "Hello, World!" running :).

I have an (empty) ROM/EPROM module in my collection (HP82971). It's an Integral expanison PC with sockets for 16 ROMs/EPROMs, and DIP switched to set the starting address, ROM type, etc. There is some software on hpmuseum.net to burn EPROMs to use in this module (said software runs on the Integral). I've just never got round to it. The HPUS module in my Integral (I think it's V5.0) is clearly designed to take a daughteroard contianing another 4 ROMs. Was that ever used for anything, I wonder? -tony

Interesting... I'd love to find that daughterboard. I wonder how hard ti would be to put other software in said ROMs. Does a proper low-level programming manaul exist for the Integral? I've never seen it, or seen reference to it, alas. There is claimed to be one for the HP9000/200 series, BTW, but I've never seen that either. -tony

Is it the same PCB? haev V5.0 in my Integrals, and the daugherboard connectors are 2 row things (I think 2 rows of 10 pins each), a plug at one end of the PC, a socket at the other, so that the daughterboard can only fit one way round. But I am sure I've een a picutre of an Itengral ROM module PCB on one of the websites which appears to have SIL connectors for the daughterboard. As regards using smaller ROMs, the ROM select decoding is, IIRC, on the Logic A PCB, with 4 chip select lines being fed to the ROM module. [Each line enales 2 ROMs, the high and low bytes of the 16 bit word]. Anyway, if you used smaller ROMs, unless you changed things on the Logic A PCB, the ROM would not be a contiguous block, whihc would seem to be a Bad Thing. -tony

No, please don't sent them here. I am on a slow dial-up connection, and I have a text-only display anyway... If you want to send me pictures, please send them to tony_duell at yahoo.co.uk I have quite a bit of space there. My V5.0 modules have a 2-row connector mounted vertically at each end (narrow side) of the PCB. Nice. I bought a second Integral earlier in the year to get a serial board... It camew with a couple of HPIB drives, including a version of the 9123 I'd never seen before (using the half-helght 34 pin drives, like the one in a 9114B), etc. I've been looking at my Itegral today, and noticed something rather odd. After booting, it turns on the floppy drive motor and keeps it running. At first I thought it was a hardware problem with the drive, but a quick check showed that the MotorOn line on the disk interface connector was being asserted. My ohter Integral (also V5.0 ROMs) does the same thing, so I'd be suprised if it was a hardware fault in both machines There's a litte switch on the disk drive PCB at the front edge (not the drive select switch at the back near the interface connector). As supplied it was in position 'A', which means the motor runs all the time if MotorOn is asserted. Flipping it to 'B' means the motor onl;y runs if there's a disk in (and MotorOn is asserted). It seesm to work correctly when set like that, but it's not how HP supplied it. Other Integral owners : Do you floppy drives run all the time? How is that swithc set?. What version ROMs do you have? -tony

Correction one 36pin row on the underside of the pcb. Was sleeping I think.. Rik ----- Original Message ----- From: "Rik" <dr.emiel at xs4all.nl> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Sent: Sunday, May 04, 2008 11:26 PM Subject: Re: HP Integral PC Manuals

Yes V1.0.0 I think the same it's just designed to keep the motors running. Maybe to get the media running before the heads touch it, to prevent start/stop spots ? Well the ability to make errors is what makes us human ;-) The hartbeat should it be some kind of watchdog signal or a sync for realtime processing ? Rik ----- Original Message ----- From: "Tony Duell" <ard at p850ug1.demon.co.uk> To: <cctalk at classiccmp.org> Sent: Monday, May 05, 2008 7:58 PM Subject: Re: HP Integral PC Manuals

But maybe it's just out of consideration for the not over rated PSU. So it has not to deal with current peaks from starting and stopping the floppy drive ;-) I think there was a reason may EMI or something like that.. Or it's just a engineering artifact they forgot to fix. Rik ----- Original Message ----- From: "Tony Duell" <ard at p850ug1.demon.co.uk> To: <cctalk at classiccmp.org> Sent: Tuesday, May 06, 2008 11:47 PM Subject: Re: HP Integral PC Manuals

On Sat, May 3, 2008 at 1:00 PM, Tony Duell <ard at p850ug1.demon.co.uk> wrote: Replying to an old message here. In case anyone is interested, this is what the inside of an HP IPC ROM module looks like with the optional BASIC ROMs: http://mysite.verizon.net/watneycat/0031/0005.JPG http://mysite.verizon.net/watneycat/0031/0006.JPG http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290377617287

This article on the HPMuseum website tells it all http://www.hpmuseum.net/document.php?hwfile=2040 it is an issue of the HP Journal over the integral. But it is electroluminescent ;-) Witch ROM do you have a HPUX V1.0 or the V5.0 ? There is some difference between them. -Rik ----- Original Message ----- From: "Josh Dersch" <derschjo at msu.edu> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org> Sent: Friday, May 02, 2008 8:14 AM Subject: Re: HP Integral PC Manuals?

The printer is a normal thinkjet. Well, normal-ish Thinkjet. It uses the same 'printhead' (ink catridge), etc. I ahve no idea where you'd get one The main difference between the Integral and a normal Thinkjet is the relative positions of the mechanism and control PCB. The control circutiry is on the Logic B PCB, which is on the front side of the main chassis plate, behind the display. The PCB you see when you take the back cover and rear screen plate off is Logic A, that's parallel to Logic B on the other side of the chassis plate. Anyway, the circuitry is standard (it's the HPIL version of the microcontroller, but arranged for a mains PSU (oviously), but the different layout means that the cables between the mechanism and the PCB connectors are longer in the Integral than in a noraml Thinkjet. This is a minor prolem with the motors (the wires are integral to the motor, but if you had to replace either motor with one from a normal Thinkjet, you could cut the wires fromt he old motor at a suitable point, cut the connector off the repalcement motor, and solder/heatshrink the connections. Anyway, motors rarely fail. The problem is the flexile PCB that links the carriage to the PC, and whihc carriws the printhead signals. It's longer than a normal one too, and those _do_ fail, particualrly if th ink cartridge leaks onto it (at the front of the carriage), and it's left in that state. Replaceing it is not too hard if you can get the part, but kludging in a normal-length flexiprint could be 'interesting'. If you want to get the printer mechansim out, you have to remove the logic PCB chassis first. As part of that you unplug all the cables from the Logic B PCB, including all the Thinkjet mechanism ones. You don't need to remove the PSU/backplane box. With the logic assembly out of the way, you remvoe the RH (lookin from the front) spaceer at the top to free the grounding tail on the Pritner control panel (if you don't do that, you _will_ tear said tail), then unto the obvious screw and take the control panel out. THe PCB is the stnadard Thinkjet one, the wires are, again, longer. Then I think it's 3 screws that hold the mechanims in place, with those out it just lifts out. The mechanism is overhauled like a normal Thinkjet one. I don't know if the Thinkjet service mnaula is on the web anywhere, I have it on paper (but as ever, no scanner). If you want to tkae it apart, I can talk you through it. Much of it is biouv (but there are some tiny dowel pins that drom out and get lost if you're not expecting them). You need a good set of Torx driers. Basically, I do it in the following order (I think). At the back, take off the carriage motor, home sensor and paper-out switch and actuator (the latter has a magnet that operaates the reed switch). Take off the cleaning pad holder Take off the cover on the RHS, then the platten motor Take off the paper bail (E-circlips at each end, there are dowel pins here that fall out). Take the rollers off that. If necessary, remove the torsion springs and the bail support arms Take off the platten gear, then the E-circlik at the other end and the 2 bearings. Lfit out the platten and take the parts off the shaft -- when reassembling, you have to line up the sproket teeth, of course. Then take out the paper guide 'basket'. To remove the cariage, first undo the screw holdign the drive cable to it. There's a plastic washer on the screw to hold the cable in place -- make sure that's fitted and thusthe cable is not going to unwind. Then free the flexiprint from where it's lightly glued to the chassis, take out the carriage rails (E-circlips) and lift out the carriage The carriagel comes apart (although HP don't recomend it). The bottom secion can be freed by frobing the locking part and sliding it free. Then there are 2 little plastic clips that hold the flexiprint to the front part of the carriage, with those removed you can fold the flexiprint and feed the end throug the carriage slot. IO have never tired to remove or replaec the carriage drive wire and gearbox. HP claim that's not field-repairable. I suspect special clamps, etc are going to be very useful, one day I will give it a go (I have at least one THinkjet with a wrecked flexiprint that I'll experiment on). It's worth remembering if you do this that if you refit the carriage motor, you can lock the motor, and thuse the mechanism connected to it, but passing a suitable current trhough one of the windings. That would prevent the pulley from turning, for example. [...] I guess I'm justa curious hardware type, I like to see what goes on inside all my classic computers :-) The RS232 card has an interesting undocumented feature that AFAIK no software supports (but I would like to be proved wrong). It's acutally a _dual_ RS232 port. The 68681 chip used on said PCB is actually a 2-channel device. The second channel is uffered to RS232 levales and wired to the seocndary ('back') channel pins on the DB25 conenctor. I think things like SRTS are wired up too. Well, a hard disk would have got round that problem :-). -tony