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HP-17B Language selection disappeared. - Printable Version +- HP Forums (https://archived.hpcalc.org/museumforum) +-- Forum: HP Museum Forums (https://archived.hpcalc.org/museumforum/forum-1.html) +--- Forum: Old HP Forum Archives (https://archived.hpcalc.org/museumforum/forum-2.html) +--- Thread: HP-17B Language selection disappeared. (/thread-211344.html) |
HP-17B Language selection disappeared. - Kees van der Sanden - 02-12-2012 A few day ago a receiver the next question:
After having used this calculator for 24 years now, Any other suggestion?
Re: HP-17B Language selection disappeared. - bill platt - 02-12-2012 The 17b has an auto-detect feature. If it detects that its user's English is above college level, it disables all other languages.
Re: HP-17B Language selection disappeared. - bill platt - 02-12-2012 I wonder what would come out if you ran it painstakingly through the ROM extraction process? Would it spit out the original International ROM, or this strange switch?
Re: HP-17B Language selection disappeared. - Don Shepherd - 02-12-2012 Have you tried resetting via the sequence CLR + third menu key from the left? That might work.
Re: HP-17B Language selection disappeared. - Don Shepherd - 02-12-2012 You could perform the self-test. If you get OK-17B-I, I believe that means you have the international version, which has the language selections. If you get OK-17B-E, you have the English-only version.
I've never heard of an international version turning into an English-only version before. If true, that would seem to be a ROM defect.
Re: HP-17B Language selection disappeared. - Kees van der Sanden - 02-13-2012 I also think it is the ROM.
Edited: 13 Feb 2012, 1:07 p.m.
Re: HP-17B Language selection disappeared. - Don Shepherd - 02-13-2012 So when you do the self-test, do you get OK-17B-E or OK-17B-I?
Re: HP-17B Language selection disappeared. - Christoph Giesselink - 02-13-2012 Quote: I fully agree with Don. The difference between the International and the English version of the 17B is the additional 32KB ROM chip mapped at address #20000. The English/Basic 64KB ROM (inside the Lewis CPU chip) look at startup at address #20000 for the sequence 20000:F3C5A (output of the build in memory scanner). If the sequence is found the English ROM calls a specified address inside the additional 32KB ROM for the international initialization. Here're HP82240B log's of the self test (done with Emu42 and HP82240B printer simulation)
One difference between the International and English version is the already mentioned OK message. The 2nd difference is the additional "ROM2 OK" message at the International version. Any repeating byte sequence at address #20000 like 20000:A3A3A3 looks like an open data bus, in the case of the International version that means a defect around the additional ROM chip.
Christoph
Re: HP-17B Language selection disappeared. - Kees van der Sanden - 02-13-2012 Unfortunately i don't have the calculator here. Re: HP-17B Language selection disappeared. - Don Shepherd - 02-13-2012 Thanks Christoph. I didn't know about that ROM2 OK in the self-test, thanks for that info.
Re: HP-17B Language selection disappeared. - bill platt - 02-13-2012 Only the coolest forum this side of the galaxy :-)
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