Identify HP-71B software?
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01-26-2023, 04:57 PM
Post: #1
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Identify HP-71B software?
I was fortunate enough to acquire a 71B with the latest ROM and HPIL ROM from That Place recently. It included a CMT 64K module with some survey software. I checked Sylvain's Compendium and Joe's LIF collection but could not identify the software source. Here are some details
Code:
Quote:Free ABACUS SoftwareSo, is this is some sort of support software given to purchasers of a surveying program? If so, which one? I'm sure I remember seeing ABACUS somewhere. Does anyone have information on the above ROM content or on the company mentioned? Any information appreciated! ~Mark Remember kids, "In a democracy, you get the government you deserve." |
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01-27-2023, 02:08 PM
(This post was last modified: 01-27-2023 02:21 PM by Dave Frederickson.)
Post: #2
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RE: Identify HP-71B software?
The most complete list of 71B modules can be found on HP Collection's website.
http://www.hp-collection.org/71database.html Perhaps if you were to share a dump or image of the EPROM we could help figure it out. Here's the overlay for the software, maybe that will help. |
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01-27-2023, 04:29 PM
Post: #3
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RE: Identify HP-71B software?
Thanks Dave. It does seem to be the ABACUS survey software. It is a match for Matthias' ROM database but an earlier version. It came with a blank overlay so I didn't have one like you show to help with identification.
I've attached an HP9114B LIF image of the ROM content that you can load into Emu71. Not sure how to capture a ROM image, but this would be nice to add to the MultiMod collection. If I had just a few more program bytes I could add a ROM copy to MM command ~Mark Remember kids, "In a democracy, you get the government you deserve." |
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01-27-2023, 09:05 PM
(This post was last modified: 01-27-2023 09:34 PM by J-F Garnier.)
Post: #4
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RE: Identify HP-71B software?
(01-27-2023 04:29 PM)mfleming Wrote: I've attached an HP9114B LIF image of the ROM content that you can load into Emu71. Not sure how to capture a ROM image, but this would be nice to add to the MultiMod collection. If I had just a few more program bytes I could add a ROM copy to MM command Thanks for the files. The easiest way to make a ROM image is to use the ROMCOPY LEX; for true ROM image collectors the best way is to make a dump using PEEK statements (examples at various places) because it preserves everything. Anyway, the individual files are good enough to have an idea of the content. The LEX files are always interesting to explore: Code: LEX ID # 93 LEX2, LEX4 and LEX5 are known LEX files with common keywords. LEX1 implements a SDCCHR2 keyword, that is used once in the SDC program. LEX3 seems to implement commands for a serial communication, but the keywords are not used in the programs. Hard to figure out the usage without any example. [edit:] The ROM was likely to be used with another ROM, because there are statements such as CALL CIO(E) IN FFF in the programs, referring to a FFF file that is not within this ROM. FFF likely stands for "Flex. File Frmt.", the name of another Abacus ROM. One can currently be seen on eBay. J-F |
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01-27-2023, 09:29 PM
Post: #5
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RE: Identify HP-71B software?
(01-27-2023 09:05 PM)J-F Garnier Wrote: LEX3 seems to implement commands for a serial communication, but the keywords are not used in the programs. Hard to figure out the usage without any example. Thanks for the LEX header dump. Looks very 41'ish. Playing around with the program I did see it try to initialize and choose a comm port and baud rate. A user manual would obviously be a great help! I'll copy or peek a ROM image this weekend... ~Mark Remember kids, "In a democracy, you get the government you deserve." |
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01-27-2023, 10:18 PM
(This post was last modified: 01-30-2023 03:19 PM by Dave Frederickson.)
Post: #6
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RE: Identify HP-71B software?
(01-27-2023 04:29 PM)mfleming Wrote: Not sure how to capture a ROM image, but this would be nice to add to the MultiMod collection. A procedure can be found in the Emu71/Win manual. https://hp.giesselink.com/Emu71/Emu71.htm Note that ROMCOPY shouldn't be used to create an image of an EPROM. The reason for this is that the function of ROMCOPY is to generate checksums and if used to create an image of an EPPROM the checksum will overwrite the IRAM identifier. The EPROM would now be identified as a ROM and that might cause undesirable consequences. An alternative would be use EPRMCPY from the CMTTOOLS included with the CMT EPROM programmer which is just ROMCOPY with different defaults but avoids having to deal with command options. Dave |
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01-29-2023, 05:50 PM
Post: #7
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RE: Identify HP-71B software?
Thanks for the instructions Dave. With all the other things going on lately it's been a while since I've had an extended hands-on session with the 71B. Exploring the new one renews the fascination.
Attached is a zip file with the following content DUMP.BAS - The BASIC program to dump the ROM content SDC407.BIN - ROM image, tested with Emu71 SDC407.EMU - ROM file converted to EMU (?) format SDC407.TXT - Hex file produced by the above dump program I hope a bit more can be discovered by plugging in the BIN file. I'll create a DAT file sometime soon for MultiMod and upload to the Github repo. ~Mark Remember kids, "In a democracy, you get the government you deserve." |
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01-30-2023, 08:27 AM
Post: #8
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RE: Identify HP-71B software?
(01-29-2023 05:50 PM)mfleming Wrote: Attached is a zip file with the following content Thanks! This ROM image has a a IRAM header and a correct CMT checksum (not the HP ones), showing that this module was built with CMT tools from a 64K RAM port. BTW, the .EMU unpacked format (one nibble per byte) is not really needed, the .BIN works on both Emu71 /DOS and /Win. Quote:I'll create a DAT file sometime soon for MultiMod and upload to the Github repoBut it will be of little use without the companion ROM, see my note above. J-F |
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01-30-2023, 11:38 AM
Post: #9
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RE: Identify HP-71B software?
(01-30-2023 08:27 AM)J-F Garnier Wrote: Thanks! This ROM image has a a IRAM header and a correct CMT checksum (not the HP ones), showing that this module was built with CMT tools from a 64K RAM port. Ah ha, that would correspond to my original supposition that this CMT was created by the original owner. The starting message implies the code was provided by ABACUS, probably on floppy disc, to support the main ROM. With the code preserved I suppose the CMT module can be reused... Quote:Free ABACUS Software Remember kids, "In a democracy, you get the government you deserve." |
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01-30-2023, 03:43 PM
Post: #10
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RE: Identify HP-71B software?
(01-30-2023 08:27 AM)J-F Garnier Wrote: But it will be of little use without the companion ROM, see my note above. I believe the "companion ROM" is the Flexible File Formatter (FFF) EPROM. See HP-Collection's database. BTW, the FFF EPROM is currently available on eBay. https://www.ebay.com/itm/224326595785 Unfortunately it's an older version and the seller is known for unfair prices. Dave |
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01-30-2023, 04:45 PM
Post: #11
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RE: Identify HP-71B software?
(01-30-2023 03:43 PM)Dave Frederickson Wrote: I believe the "companion ROM" is the Flexible File Formatter (FFF) EPROM. See HP-Collection's database. Yeah, saw that. Reminds me of the old joke about the kid selling a cup of lemonade for $50 (only need to sell one). I've looked at the labels of the two ABACUS ROMs and I'm beginning to wonder if my own might have come from ABACUS itself. Label was peeled down to show the CMT logo. Remember kids, "In a democracy, you get the government you deserve." |
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01-30-2023, 06:14 PM
(This post was last modified: 01-30-2023 06:16 PM by Dave Frederickson.)
Post: #12
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RE: Identify HP-71B software?
Here's a guy who worked at Abacus.
https://www.facebook.com/tom.arneson.7/ https://www.linkedin.com/in/tom-arneson-409a9b18 Maybe he knows. |
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