[A83] Re: data sent to the black hole, and Iondetect for apps
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[A83] Re: data sent to the black hole, and Iondetect for apps
At 10:21 PM 6/2/03 -0500, you wrote:
>I just discovered that when you delete a program on the TI83, the data
>isn't erased at all. Only its entry in the VAT gets destroyed
>immediatly. As more memory is allocated, the old program data gets
>overwritten.
>
>So I'm testing Bubble Bobble out with external levels, and go then delete
>the level. When I went to resume the game using the old pointer to the
>levels, level 1 got junked up bad, but the rest of the levels were still
>perfectly intact! And this is AFTER deleting the map file.
>
>Maybe it would be possible to write a program recoverer, or (actually
>useful) maybe a scandisk type program something to correct bad VAT
>enteries, like ones that point to ROM and freeze the calc when you delete them.
There was talk of an fschk83 program a while back, I don't know that
anything happened with it.
>A question: How do I modify ionDetect on the TI83+ to run from an app? I
>don't think you can use the unmodified ionDetect from an app since it
>copies the detected program to the address pointed by ($9820) [tempmem].
>
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