http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5221558276 Ends Jul-26-05 20:32:18 PDT -- Reply to ohland@charter.net
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Louis Ohland wrote: > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5221558276 > Ends Jul-26-05 20:32:18 PDT > Reply to ohland@charter.net Dave Finzel is a good seller. Where could we find information about this 7541 box? Dan
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Louis Ohland wrote: > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5221558276 > Ends Jul-26-05 20:32:18 PDT > Reply to ohland@charter.net Dave Finzel is a good seller. Where could we find information about this 7541 box? Dan
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Louis Ohland wrote: > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5221558276 > Ends Jul-26-05 20:32:18 PDT > Reply to ohland@charter.net Dave Finzel is a good seller. Where could we find information about this 7541 box? Dan
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I candt findt anything yet. I found the 7537, which seems odd, references the L40 SX technical reference... Dan the K wrote: > > Louis Ohland wrote: > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5221558276 > > Ends Jul-26-05 20:32:18 PDT > > Reply to ohland@charter.net > > Dave Finzel is a good seller. > > Where could we find information about this 7541 box? > > Dan -- Reply to ohland@charter.net
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Looks like it's a microchannel based system. I have the refdisk on the Gila Monster. http://www.gilanet.com/ohlandl/ic_files/ref7541.html The 1784-KT2 has been verified for operation with the following computers: Allen-Bradley 6123, 6124 IBM PS/2 7541, 7561, 8550, 8555, 8560, 8570, 8580 Louis Ohland wrote: > > I candt findt anything yet. I found the 7537, which seems odd, > references the L40 SX technical reference... > > Dan the K wrote: > > > > Louis Ohland wrote: > > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5221558276 > > > Ends Jul-26-05 20:32:18 PDT > > > Reply to ohland@charter.net > > > > Dave Finzel is a good seller. > > > > Where could we find information about this 7541 box? > > > > Dan > > -- > Reply to ohland@charter.net -- Reply to ohland@charter.net
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IBM 7541 AND 7542 INDUSTRIAL COMPUTERS IBM Announcement Letter Number 189-042 The 7541 and 7542 Industrial Computers are designed to function in an industrial plant floor environment where harsh physical conditions may exist. The system is highlighted by Micro Channel (TM) architecture with a 10MHz 80286 16-bit microprocessor with a capability of supporting up to 2Mb of real memory on the system board, 30Mb of disk storage, a 1.44Mb diskette drive and VGA graphics. Total memory is expandable to 16Mb by adding 16-bit I/O slot memory expansion feature cards. Super K, I'd opine that it is based on the 50z planar. So this is like the 7561/62 Louis Ohland wrote: > > Looks like it's a microchannel based system. I have the refdisk on the > Gila Monster. > > http://www.gilanet.com/ohlandl/ic_files/ref7541.html > > The 1784-KT2 has been verified for operation with the following > computers: > Allen-Bradley 6123, 6124 > IBM PS/2 7541, 7561, 8550, 8555, 8560, 8570, 8580 > > Louis Ohland wrote: > > > > I candt findt anything yet. I found the 7537, which seems odd, > > references the L40 SX technical reference... > > > > Dan the K wrote: > > > > > > Louis Ohland wrote: > > > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5221558276 > > > > Ends Jul-26-05 20:32:18 PDT > > > > Reply to ohland@charter.net > > > > > > Dave Finzel is a good seller. > > > > > > Where could we find information about this 7541 box? > > > > > > Dan > > > > -- > > Reply to ohland@charter.net > > -- > Reply to ohland@charter.net -- Reply to ohland@charter.net
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> Super K, I'd opine that it is based on the 50z planar. So this is like > the 7561/62 Just saw a picture of the inside of the unit, and from last summer when David B. showed me a model 50z planar, I would say that the inside is a model 50z planar. Oddly enough, there are four slot covers on the back, but just three expansion slots on the planar. But, to give teh IBMers credit, they only numbered three slots on the outside, ;). exwisdem
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And yet another industrial system has appeared on the radar: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5223710169 although it is a 7546. exwisdem
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For - THE - quintessential IBM Industrial system Experience, there is no substitute for holy joy. Behold, the 7552 (AT technology) and the 7568 (MCA cosmology). http://www.gilanet.com/ohlandl/7568/7568_Common_Devices.html David Ress wrote: > > And yet another industrial system has appeared on the > radar: > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5223710169 > > although it is a 7546. > > exwisdem -- Reply to ohland@charter.net
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No idea if it is a 57 (SLC), Bermuda or Lacuna. > > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5223710169 > > > > although it is a 7546. -- Reply to ohland@charter.net
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Hi David, > ...Just saw a picture of the inside of the unit, and from last > summer when David B. showed me a model 50z planar, > I would say that the inside is a model 50z planar... Yes, it is. With a 287 coprocessor (not too rare with me anymore). And some different kind of cable for the DBA ESDI drive, because it has a Model 70 PSU & drive platform. > ...Oddly enough, there are four slot covers on the back, but > just three expansion slots on the planar. But, to give the > IBMers credit, they only numbered three slots on the outside... Yes, so it can fit the 7561 planar as well (http://www.gilanet.com/ohlandl/7561-62/7562_Planar.html). The picture the seller has forwarded looks very similiar to Alfred's 7561 (http://www.gilanet.com/ohlandl/7561-62/ibm7561.html). And for what it is worth I am still interested in being the buyer. David David@IBMMuseum.com
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Hi Louis, > No idea if it is a 57 (SLC), Bermuda or Lacuna. 9556/9557 planar. See the SCSI, video (XGA-2), & dual serial ports on the planar (which neither Model 77 has) in a picture of the back. Which means a 486SLC2 or 486SLC3 CPU. David David@IBMMuseum.com
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> I would say that the inside is a model 50z planar Hello David, Which type of hard drive would fit this machine?When you get it in mabey you can look inside and take a peek.I guess from the above, one from a 50Z? I picked up one of these machines (7541) a few years ago and it has the green(color) monitor & keyboard to go with it. It came from NASA and it looks like the inside sheet metal is stainless steel of course w/ no hard drive. MT
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"PS/2_RETROPRINCE", > Which type of hard drive would fit this machine? When you get > it in mabey you can look inside and take a peek.I guess from the > above, one from a 50Z? I picked up one of these machines > (7541) a few years ago and it has the green(color) monitor & > keyboard to go with it. It came from NASA and it looks like > the inside sheet metal is stainless steel of course w/ no hard drive. From a picture forwarded to me it looks to be a DBA ESDI drive like would be on a 50Z normally. The PSU & drive platform from a Model 70 is inside, so that blocks access to the inside 16-bit slot the DBA riser sits in. There appears to be a shorter card header fitting below the platform with the cable routed around to the drive (http://www.gilanet.com/David/7541/ibminsde.JPG). The National Instruments card is already spoken for by someone that forwarded the picture. I'll have to see the assembly of the DBA riser or whether something like the hard drive controller from the Apricot would fit. If there was a right angle riser (a reverse of like what is on the XStation 130) a 16-bit SCSI card could be put parallel to the planar. My 7568 Industrial (Gearbox 800) is from Johnson Space Center, with a serial number of 002 (meaning there should have been at least one other Gearbox there, becuse the serial numbers were customer sequences, not in a series). I can't figure out what the system was used for in particular. Still looking for a breakout box (http://www.gilanet.com/ohlandl/7568/7568_System_Resource.html#Three_Port_Ca ble) for it. David David@IBMMuseum.com
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Hi Louis, > ...Which means a 486SLC2 or 486SLC3 CPU... Per your page for the 7546, the A11 & A12 sub-models are a 486SLC2 CPU. Meaning the same planar as a 9556/9557-xBx. Not marked what the 620 & 622 sub-models are, but using the same reference/diagnostic images (so they could be a 486SLC3 9556/9557-xEx planar possibly). David David@IBMMuseum.com
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Hi! David, whatever you do, be very protective of the grey keyboard. They *melt* all too easily. You'll want to be very careful dishwashing it and direct sunlight is absolutely out of the question. I've had two of these units...one was fine until I dishwashed it and the other...I really have no idea. It looked fine at purchase time but was melted when I got it home. William
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7541 came in today... >> I would say that the inside is a model 50z planar... Yes, but with an FRU none of my 50Z planars have: 15F8675. Strangely it gives the Planar ID of a 50-021: FBFFh. Model/Submodel of FC/04, BIOS revision "03". > ...And some different kind of cable for the DBA ESDI > drive, because it has a Model 70 PSU & drive platform. The drive cable is FRU 15F8732. It does have a TTL 74S244 buffer chip in it's length. The drive (Standard 30Mb DBA ESDI) is failing (hope I can grab any software for the NI-MIO-16 for who gets it), not booting about half the time. Drive platform is from a Model 70, but is labeled FRU 15F8655. Starting to see a pattern here? PSU is slightly modified from a Model 70, FRU 23F1415 (interesting that the Model 50Z SIMM (2Mb) *can't* come out unless the planar or PSU is removed). The Alps 1.44Mb is also failing. I have replaced it (took a few attempts) with one that works. Other than the NI adapter there is a full-length TR card that rings in at a blazing 4Mbps (just the way the config is set right now, because it's 16/4). PC-DOS 4. IBM LAN for the TR adapter. I haven't looked deeper at the software because of the drive errors. Despite the drive failures, this has to be the cleanest "PS/2" I have seen. The fan screen stopped all the dust (it is built up there on the outside). David David@IBMMuseum.com
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Hello David, > 7541 came in today... Good for you. > >> I would say that the inside is a model 50z planar... > Yes, but with an FRU none of my 50Z planars have: 15F8675. > Strangely it gives the Planar ID of a 50-021: FBFFh. Model/Submodel of > FC/04, BIOS revision "03". FRU for a 50z, yet Planar ID is for a 50? I *was* going to look at your webpages some before posting, but it seems all the book marks I have are no longer valid. Bummer. > The drive cable is FRU 15F8732. It does have a TTL 74S244 buffer > chip in it's length. The drive (Standard 30Mb DBA ESDI) is failing > (hope I can grab any software for the NI-MIO-16 for who gets it), not > booting about half the time. Is the drive cable similar to what you were looking for about a year ago? I guess the 74LS244 is tied to the d0-d7 data pins for syncing the byte transfers? And what a thankful guy he would be if you can get the NI-MIO-16 softare from the drive... > Drive platform is from a Model 70, but is labeled FRU 15F8655. > Starting to see a pattern here? PSU is slightly modified from a Model > 70, FRU 23F1415 (interesting that the Model 50Z SIMM (2Mb) *can't* come > out unless the planar or PSU is removed). Sounds like a "hobbled" together system, but I am not seeing much of a pattern aside from that. Do I need more coffee to see the pattern? > Despite the drive failures, > this has to be the cleanest "PS/2" I have seen. The fan screen stopped > all the dust (it is built up there on the outside). When I worked at TRW many years ago, we had IBM's industrial XT systems deployed in some of the filthiest environments possible. Changing the oil in one was a weekly event, as was replacing the filter in all of them. All can say is IBM really made some good industrial hardware back then. I have never used an industrial one with MCA, but I bet they are just as rock solid. Given the sellers description and the fact it is an industrial unit, I wonder if the drive "went south" (sorry for the pun Tim K., no offense intended) during shipping. Enjoy your new system, and thanks for putting your museum together. As one who has seen it, I can honestly say it is impressive and valuable resource. exwisdem
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Hi David, > FRU for a 50z, yet Planar ID is for a 50? I *was* going to look > at your webpages some before posting, but it seems all the book > marks I have are no longer valid. Bummer. Perhaps because of a rename of one or two (taking the 'L' off the end, for 8.3 naming convention) pages. I have moved a copy (accessable with directory browsing for now, an index page later) to www.IBMMuseum.com/Routines/ as well. Be aware any links (except for the domain name) are CASE SENSITIVE on that server. > Is the drive cable similar to what you were looking for about > a year ago? I guess the 74LS244 is tied to the d0-d7 data > pins for syncing the byte transfers? No, that was the TP700/TP720 IDE converter. I haven't investigated the TTL chip enough yet to see which pins it is on (and one chip means only eight bits). For those not familiar with TTL 74**244/74**245 buffer chips, it is just like a knob (Chip Select line) to allow buffering of those signals through the device (the 244 & 245 differ in that one also inverts the signal). > And what a thankful guy he would be if you can get the > NI-MIO-16 softare from the drive... Looks like some Fortran source, in a "ROBOTCOM" directory. There was another directory with something about communications. But it will be a little more time with me in front of the system, with the drive working (bad sector errors keep coming up) to see. > Sounds like a "hobbled" together system, but I am not > seeing much of a pattern aside from that. Do I need > more coffee to see the pattern? Doubtless you will have more coffee anyway. I was referring to the similarities of the FRUs put on the stock PS/2 parts. Mostly the pattern of 15F8xxx. > When I worked at TRW many years ago, we had IBM's industrial > XT systems deployed in some of the filthiest environments > possible. Changing the oil in one was a weekly event, as was > replacing the filter in all of them. All can say is IBM really made > some good industrial hardware back then. I have never used > an industrial one with MCA, but I bet they are just as rock solid. This is my first experience with a microchannel version. I rather like even the ISA & PCI versions too, in some cases going to good RAID arrangements. The failures I have seen on this one are the same ones on PS/2s since they use the same components here (DBA ESDI drive & Alps floppies). > Given the sellers description and the fact it is an industrial unit, I > wonder if the drive "went south" (sorry for the pun Tim K., no > offense intended) during shipping. About half the time I power it up there is no initial drive error (but it always has a read error later, luckily able to be aborted to get to a DOS prompt). The beeps & sequence are nearly the same, so booting without a "good monitor, keyboard, etc" had errors the seller never saw. As I have other drives, my main worry is just getting the data I can for you. > Enjoy your new system, and thanks for putting your museum > together. As one who has seen it, I can honestly say it is > impressive and valuable resource. I'm tired of not giving enough time for the online content (why I have started to put the routines & interrupt pages there). But that is how my life is now. Perhaps WBST needs to visit so I can put more effort into my webpages too! David David@IBMMuseum.com
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Hello David, > Perhaps because of a rename of one or two (taking the 'L' off the end, > for 8.3 naming convention) pages. I have moved a copy (accessable with > directory browsing for now, an index page later) to > www.IBMMuseum.com/Routines/ as well. Be aware any links (except for the > domain name) are CASE SENSITIVE on that server. Thanks, I will check later tonight once the little ones are in bed. > > And what a thankful guy he would be if you can get the > > NI-MIO-16 softare from the drive... > Looks like some Fortran source, in a "ROBOTCOM" directory. There was > another directory with something about communications. But it will be a > little more time with me in front of the system, with the drive working (bad > sector errors keep coming up) to see. Sounds interesting, but do not spend any more time on it. I know you are busy. > As I have > other drives, my main worry is just getting the data I can for you. I appreciate the effort, but I know all about read errors and hard drives. Seriously, I know you have more important demands on your time than reading from a drive with read errors. > I'm tired of not giving enough time for the online content (why I have > started to put the routines & interrupt pages there). But that is how my > life is now. Perhaps WBST needs to visit so I can put more effort into my > webpages too! Well, if WBST comes to visit you, send him my way when he leaves. I have started two new sections for my website, but have not finished them yet. exwisdem
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Hi David... "David L. Beem" <David@gilanet.com> wrote in message news:43039755$1@nntp.zianet.com... > <SNIP> > > Given the sellers description and the fact it is an industrial unit, I > > wonder if the drive "went south" (sorry for the pun Tim K., no > > offense intended) during shipping. > About half the time I power it up there is no initial drive error (but > it always has a read error later, luckily able to be aborted to get to a DOS > prompt). The beeps & sequence are nearly the same, so booting without a > "good monitor, keyboard, etc" had errors the seller never saw. As I have > other drives, my main worry is just getting the data I can for you. > > > Enjoy your new system, and thanks for putting your museum > > together. As one who has seen it, I can honestly say it is > > impressive and valuable resource. > I'm tired of not giving enough time for the online content (why I have > started to put the routines & interrupt pages there). But that is how my > life is now. Perhaps WBST needs to visit so I can put more effort into my > webpages too! Huh? Wassup? Do what... where...? -- Regards, Tim Clarke (a.k.a. WBST)
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"Tim Clarke" wrote: > > > Enjoy your new system, and thanks for putting your museum > > > together. As one who has seen it, I can honestly say it is > > > impressive and valuable resource. > > I'm tired of not giving enough time for the online content (why I > have > > started to put the routines & interrupt pages there). But that is how my > > life is now. Perhaps WBST needs to visit so I can put more effort into my > > webpages too! > > Huh? Wassup? Do what... where...? where is your ibm museum? hidden somewhere under www.ibmmuseum.com?!?!?! /pete --------------------------------------------------------- posted via the ps/2 usenet archive at http://www.ps-2.org
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Hi David! > Perhaps because of a rename of one or two (taking the 'L' off the end, > for 8.3 naming convention) pages. I have moved a copy (accessable with > directory browsing for now, an index page later) to > www.IBMMuseum.com/Routines/ as well. Be aware any links (except for the > domain name) are CASE SENSITIVE on that server. Normally names of files on severs should be generally lower-case only. Exceptions are Makefile, README, INDEX00 and so on. And .html is also standard. That's all to avoid such problems you (or your visitors) have there ;o) Saski -- Remove ".KEIN.ROASTBEEF" from my address to send mail
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