If there are any problems reading Glen's copy, let me know, I have the same disks for my 1631. Might have gotten them from Glen :) J

On Sat, Dec 3, 2016 at 2:00 PM, Rik Bos <hp-fix at xs4all.nl> wrote: I found the tape. It is a "MINI DATA CASSETTE": http://www.hpmuseum.net/images/82176A-40.jpg Part number 10269-11014, "6809 INVERSE ASSEMBLER". This page says the 82176A cartridges are extremely reliable and they have been able to read every tape they have come accross: http://www.hpmuseum.net/display_item.php?hw=676 I have no means to read and dump this tape myself.

Glen Slick wrote: Interresting, I've don't even knew that such tape drives existed. I'm interested in software for that thing, but it seems that I can't do much to be helpful here. I'll ask the friend from which I got the disk drive, maybe some tape drive existis additinally? I've read on wikipedia that the Tapes are HP-IL only but converters to HP-IB should exists.. Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 info at tsht.de Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790 741

On Mon, Dec 5, 2016 at 7:39 PM, Holm Tiffe <holm at freibergnet.de> wrote: It's the little HPIL tape drive that was first used with the HP41 calculator. The HP1630 has HPIL as standard. IIRC you can configure it to either be remote-controlled over HPIB (when it will use HPIL for mass storage devices like this tape drive) or vice versa. But I seem to remember that there were several firmware revisions for these logic analysers and that some feautres were added later. You may need to 'acquire' a dump of the later ROMs... -tony

To answer my own question about 2764 vs. 27128 EPROM support on the CPU board, the schematics in the service manuals on Bitsavers are much more readable than in the scan of the service manual I downloaded from the HP / Agilent / Keysight website. http://www.bitsavers.org/pdf/hp/te/163x/01630-90910_1630A_D_G_Logic_Analyze… http://www.bitsavers.org/pdf/hp/te/163x/01630-90917_1630_Service_Apr88.pdf Schematic sheet 8B-3 shows that address lines HPA0 - HPA12 go to address lines A0 - A12 of each EPROM in parallel, which allows for 8KB for each EPROM, then address lines HPA13 - HPA15 go to the demultiplexer to enable 1 of 8 EPROMs, then HPA16 goes to A13 of each EPROM in parallel. Inside 2764 EPROMs the HPA16 connection to A13 in the EPROM is a N/C. With 27128 EPROMs that would allow a second bank of 64KB address space to be mapped across the top half of the eight 16KB EPROMs. So from the schematic it appears that if a 1630 CPU board has 2764 EPROMs it should be possible to swap those out for the final 27128 EPROM version and the address decoding should just work. I'll find out if that is actually true when I receive a 1630D later this week.

On Mon, Dec 5, 2016 at 4:50 PM, Eric Smith <spacewar at gmail.com> wrote: http://literature.cdn.keysight.com/litweb/pdf/5958-3780.pdf Title & Document Type: 10330A/10331A Upgrade Kits Installation Instructions Manual Part Number: 5958-3780 Revision Date: May 1985 Model conversion table Note (1) 1630A/D shipped before February 1, 1985 uses an HP-IL cassette drive for mass storage. 1630A/D shipped after February 1, 1985 uses an HP-IB disc drive for mass storage. Note (2) regarding Tape ROM Set This ROM Set consists of the following parts: 01630-80008 01630-80009 01630-80010 01630-80011 01630-80012 01630-80013 01630-80014 01630-80015

On Mon, Dec 5, 2016 at 11:31 AM, Holm Tiffe <holm at freibergnet.de> wrote: I tried using ImageDisk on a PC to read the two HP 1630 3.5-inch floppies I have (10304 8085 preprocessor, 10342 HP-IB, RS-232C/V.24, RS-449 preprocessor). It appeared to be able to read the expected data just fine. Singled sided disk with 16 256-byte sectors per track (sector numbers 0 - 15) and 70 tracks. But it also seemed to detect a sector number 17 with no data in each track. Is that a normal 9121 low level format? I haven't tried to write a floppy back out using ImageDisk to see if the result is readable on a 9121 drive. I should also try hooking up a 9121 drive to a PC and see if HPDir dumps the same binary data I get using ImageDisk.

On Mon, Dec 5, 2016 at 12:45 PM, Glen Slick <glen.slick at gmail.com> wrote: It's normal for the HP 3 1/2" floppies to have an extra sector, which is used for wear tracking, but I don't know about "no data".

On Tue, Dec 6, 2016 at 2:02 AM, Christian Corti <cc at informatik.uni-stuttgart.de> wrote: That reminded me I ran into this problem 4 years ago and sent this email to Dave at the time about it. I ended up rebuilding my own version from the IMD118 source code to fix the problem. ---------- Dave, I have some questions/suggestions about TD02IMD.COM In the main routine would it make sense to move the remove_sectors() call prior to where it does the mixed sector size check? For example, if the tracks of a disk contain 16 normal and same sized sectors and there is a 17th garbage sector in the Teledisk image with a different sector size, would it make sense to be able to use the M= command line option to filter out and remove sectors that cause image conversion failure? // Read each sector, buffer & build maps for(s=0; s < Thead.Tsectors; ++s) process_sector(); if(!issame(Smap, Size = Smap[0], Stop)) // 765 cannot do mixed sector sizes error("Cannot do mixed sector size within track"); if(!issame(Cmap, Cylinder, Stop)) // Cylinder map required Head |= 0x80; if(!issame(Hmap, Head & 0x0F, Stop)) // Head map required Head |= 0x40; // Remove sectors as requested remove_sectors(); Also, would it be reasonable to add command line options for selecting a single side of a Teledisk image, and also to limit the maximum track number? My motivation for asking these questions comes from trying to convert some HP-85/86/87 TeleDisk disk images which do appear to have the garbage sector issue I mentioned above. Plus some of these images were processed as doubled sided when only one side would actually be used, and/or process all possible 40 or 80 tracks when only 35 or 70 would actually be used in the original target environment. For example TD02IMD.COM chokes on this disk image: http://www.hpmuseum.net/software/WORDSR80.TD0 I believe the original disk here would only contain 16 valid 256-byte sectors per track, only one side of valid data, and only 70 valid tracks of data on the one valid side. ----------

On Tue, Dec 6, 2016 at 8:18 AM, Al Kossow <aek at bitsavers.org> wrote: As far as that particular issue goes as I encountered it (and getting somewhat back on to the topic of HP logic analyzers) that is also the case with the DSDD LIF format as used by HP 16500A logic analyzers. All 80 tracks are formatted with 5 1024-byte sectors per track with the first 79 tracks using sector numbers 1,2,3,4,5 and the last track using sector numbers 97,98,99,101,101 (0x61,0x62,0x63,0x64,0x65). ImageDisk had no problem reading that low level format.

Glen, Could you upload them to http://www.ko4bb.com/ So the measurement community can access them also? -Rik

Glen Slick wrote: As far as I know I do have an HP IEEE488 ISA Board lying around somewhere, and I'l ltry to look at the stack of old Motherboards if I can find something with a "higher" CPU and ISA Slots to build a Windoze computer that can be connected to the 9121D Drive so that I can restore the images to disks. ... What about those LIF Utils (lifdump, lifimage)from Tony Duell (Tony??)? Can I make disks for the data, maybe by reordering sectors and such? I don't have a computer that natively runs some Linux currently, but installing a Kinux souldn't be a big problem. If I get your permission Glen, I'll upload the images to my pulblically reachable dumpster of old data (www.tiffe.de/Robotron) so that anyone can download them.. Regards, Holm -- Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe, Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583 info at tsht.de Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790 741

On 12/5/2016 2:31 PM, Holm Tiffe wrote: Aren't these 1630D diskettes in HP's LIF format? There are LIF utilities for the PC to read / write diskettes for the 9121. I've done it and have all the hardware and software in working order -- just not readily available for awhile. Like you, Holm, I've a 1630D as well as 1630G I'd love to find these disassemblers for. Would be useful to collect as many as can be found and put on Bitsavers. - J.