Casio fx-8500G weird behavior with FA-80 interface
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05-03-2022, 12:54 PM
Post: #3
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RE: Casio fx-8500G weird behavior with FA-80 interface
(05-03-2022 11:01 AM)blackjetrock Wrote: Hmm, odd. Presumably this happens on both FA-80s? Yeah, exact same behavior with both FA-80s, which work fine with the fx-8000G. I haven't done any extensive continuity testing and tracing to see if there are any dead-ends on the I/O connector pins, but I did reflow all the solder where the port connects to the board (which didn't change anything). It's super weird, it's like a good chunk of the RAM and ROM are just not there anymore, and as soon as you disconnect the interface, the calculator acts normal again. |
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Messages In This Thread |
Casio fx-8500G weird behavior with FA-80 interface - Dave Britten - 05-02-2022, 07:28 PM
RE: Casio fx-8500G weird behavior with FA-80 interface - blackjetrock - 05-03-2022, 11:01 AM
RE: Casio fx-8500G weird behavior with FA-80 interface - Dave Britten - 05-03-2022 12:54 PM
RE: Casio fx-8500G weird behavior with FA-80 interface - Dave Britten - 05-06-2023, 09:25 PM
RE: Casio fx-8500G weird behavior with FA-80 interface - blackjetrock - 05-07-2023, 05:55 AM
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