mem cards and hp hanging

[mr...@pobox.com]

>>In the last few weeks, I read about someone having a 1meg card in their hpgx and
>>the hp hanging. He described it as having the screen go dark (or portions of) and
>>hanging I believe. I'm not sure how he rectified it, but he indicated that there
>>were no subsequent problems (that he could determine). I believe he attributed it
>>to the memory card in the machine.
>
>
>Yes, some of the unapproved RAM cards can have this problem. It seems
>to vary from one RAM card to another. For example, with some GRiD 1MB
>RAM cards this can be quite bad, and with others it doesn't happen at
>all. When this is caused by the RAM card it usually happens when the
>HP48 is turned on after being off for a few minutes or more.

I see something like this with my 1M GRiD card; I turn on the calc, the
screen goes black for a few seconds, and the calc turns off. If I'm
lucky, it turns on again the next try.

I've found that changing the calc batteries, the card battery, or both
fixes the problem-- the hard part is getting the calc turned on with
the card in it, so I don't lose the card contents while changing that
battery.

Melissa Reid

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