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RAM Errors using TI Diagnostics on Extended Basic V2.7


wyerd

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I think it is within the realm of possibility. Those address have commonality in addressing and value so it is probably just a single chip that got popped. If the value was different each time I would think that an address buffer got blown.

 

Anyone else with thoughts?

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Interesting, I just use the CorComp version of the test, which I pass, because with the TI version I get the mess viewed below.

 

FWIW - The 32K light does not come on with mine either, although it does with the CorComp test.

 

 

That looks like a VDP RAM issue...

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Interesting, I just use the CorComp version of the test, which I pass, because with the TI version I get the mess viewed below.

 

FWIW - The 32K light does not come on with mine either, although it does with the CorComp test.

 

My CorComp test passed as well with the 32K light on. I then took option 2 of the TI RAM test with address and it passed after displaying weird multicolour graphics.

 

So do I have a VDP RAM issue?

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I found in the TI diags, Option 9, there's a VDP RAM test. It ran for an hour with the odd character floating around the screen now and again, but nothing else happened until I pressed the enter key as I got bored waiting. So I'm not sure what the 1st post really means.

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I have the EB27 cartridge as well and run the tests with a real PEB with standard 32K TI expansion.

I was not able to get such results nor find out what kind of test results we actually see here.

 

Which test have you executed?

) MAIN MENU: 3 RAM TEST
- 1 FOR CHECKER BOARD TEST

- 2 TO TEST WITH ADDRESS

- 3 TO INPUT TEST PATTERN

 

) MAIN MENU: 9 MAINTENANCE
- 5 VDP RAM

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The diagnostics cart does report success on a normal console, I don't believe it has a bug in that case. I just wouldn't use it as my ONLY test when it reports a failure - try other things too. :)

 

It's been running TI Invaders from the Extended Basic v2.7 cart for the last 2 hours without any issues, so I can only assume that everything's ok. Time will tell.

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