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TI59 Diagnostic forensics
07-27-2020, 02:13 PM
Post: #6
RE: TI59 Diagnostic forensics
(07-27-2020 11:18 AM)Maximilian Hohmann Wrote:  Hello!

Very interesting. My Ti59 (bought new in 1978...) did not come with that card.

What I fail to understand however is why such a complicated calculation must be done to check if the calculator is working. It does not have a seperate floating point unit as far as I know, just a single CPU. So if it is able to come up with the correct result for "1+1" it should be good for everything else, shouldn't it?

Regards
Max

It was noted above that the diagnostic card was not shipped with Ti59s sold in Europe for some reason.

With regard to the "complicated calculation" the same could be said for the HP 67/97 diagnostic program, but in both the HP and TI calculators the test check a lot more than just the processor. Just loading the card tests the card reader and associated electronics, and the execution of the program would test some of the program memory, in the case of the 67/97 test all of it since the program just fits the available program memory, and ROMs since to carry out the functions called by the program would require accessing routines in ROM. It is even a basic display test since it ends displaying a bunch of 8s.

Paul.
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Messages In This Thread
TI59 Diagnostic forensics - Pjwum - 07-26-2020, 06:47 PM
RE: TI59 Diagnostic forensics - johanw - 07-27-2020, 01:15 AM
RE: TI59 Diagnostic forensics - rprosperi - 07-27-2020, 02:20 AM
RE: TI59 Diagnostic forensics - Paul Berger (Canada) - 07-27-2020 02:13 PM
RE: TI59 Diagnostic forensics - pinkman - 07-27-2020, 09:35 PM
RE: TI59 Diagnostic forensics - Pjwum - 07-27-2020, 03:51 PM
RE: TI59 Diagnostic forensics - rprosperi - 07-27-2020, 09:51 PM
RE: TI59 Diagnostic forensics - rprosperi - 07-28-2020, 06:55 PM
RE: TI59 Diagnostic forensics - rprosperi - 07-28-2020, 10:05 PM
RE: TI59 Diagnostic forensics - Pjwum - 07-28-2020, 05:17 PM
RE: TI59 Diagnostic forensics - Pjwum - 07-28-2020, 05:43 PM
RE: TI59 Diagnostic forensics - rprosperi - 07-28-2020, 07:01 PM
RE: TI59 Diagnostic forensics - Pjwum - 07-28-2020, 08:49 PM
RE: TI59 Diagnostic forensics - rprosperi - 07-28-2020, 09:57 PM
RE: TI59 Diagnostic forensics - Pjwum - 07-27-2020, 03:57 PM
RE: TI59 Diagnostic forensics - Werner - 07-28-2020, 10:09 AM
RE: TI59 Diagnostic forensics - rprosperi - 07-28-2020, 12:51 PM
RE: TI59 Diagnostic forensics - johanw - 07-29-2020, 07:46 PM
RE: TI59 Diagnostic forensics - Pjwum - 07-29-2020, 08:49 PM
RE: TI59 Diagnostic forensics - Werner - 07-30-2020, 02:11 PM
RE: TI59 Diagnostic forensics - Werner - 07-28-2020, 01:13 PM
RE: TI59 Diagnostic forensics - rprosperi - 07-28-2020, 04:31 PM



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