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ti99iuc

an Updated Diagnostic Software for the TI-99/4 - /4A ?

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For my computers I still using the standard and old cartridge from Texas Instruments - Diagnostic (1979)

I do not know if I lost something somewhere but, 
 

Is there an alternative updated recent diagnostic software solution to test the internal components on the motherboard of our TI99s?

 

Edited by ti99iuc

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There is the CorComp Peripheral Diagnostic Module, and there are several specialized memory test programs (JediMatt's memory tester, SAMS AMSTEST, MEGTEST for HRDs, and probably a few others). Other than that, not too much.

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@Ksarul yep, also the old CorComp, right... but I was just hoping for something more comprehensive and maybe current diagnostics (not just for memory) for the basic TI99.
I already use the nice JediMatt's memory tester for the expansions indeed.


I just miss a good diag tester of the MB chips, something Like an: Ultimate Diagnostic 20xx that include all and maybe can tell the exact chip (or more) of VDP broken  or sound chip and what other...
an automatic full diagnostic.

anyway if you don't mentioned, it is not recognized ;)

Edited by ti99iuc
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On 9/21/2021 at 7:39 PM, ti99iuc said:

I just miss a good diag tester of the MB chips, something Like an: Ultimate Diagnostic 20xx that include all and maybe can tell the exact chip (or more) of VDP broken  or sound chip and what other...
an automatic full diagnostic.

Such features usually require that the design includes the necessary feedback routes. Which adds cost, and that's nothing you want in a home product like the TI 99/4A.

Memory is easy enough to test, as you can both write to it and read from it. But a computer like the 99/4A usually can't test the sound, because it can only generate it. It has no way to "listen" to what comes out, so it can't determine if the sequence used to generate the sound really was successful. The same is true for the image on the screen.

In production, it's common to include a number of test points on the PCB. Then a testing device is probing these test points, while the computer runs some specific software. Then the computer may emit sound, and the test device will probe sound output line to see if the desired tone is actually emitted.

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8 hours ago, sparkdrummer said:

These aren't really updated diagnostics, but you might find them interesting.

I have tested them and I must say that they are useful a lot!
Overall test.dsk is really close to the one I would like to have. Better was if in Cartridge format but it is a start.

2021-09-22_230214.thumb.png.a7dc4c8c9778f78ab3f3605ec125e21f.png

 

Also Test2 is really interesting for the Video and Sound but overall for the third choice:
image.thumb.png.714c0d302372f2df8eef1dccb629f013.png

I just have an error with the 7th option but I will try on the real thing.

 

thanks again for sharing these.

 

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No sweat Ciro. 
The first disk by Know Ware was a commercial release I believe. 
 
Have you tried Advanced Diagnostics by MG?

 

 

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3 hours ago, sparkdrummer said:

Have you tried Advanced Diagnostics by MG?

Is it not just a complete test for the disk controller and floppy drives only? 

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