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HP-67 - 1612A03018 - Card Reader Advice Requested (was HP-67 - strange behavior)
11-02-2019, 11:31 PM (This post was last modified: 11-03-2019 01:03 AM by teenix.)
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teenix Offline
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RE: HP-67 - 1612A03018 - Card Reader Advice Requested (was HP-67 - strange behavior)
(11-02-2019 10:15 PM)albertofenini Wrote:  My guess, now that it happens only with "non compatible" cards is that while reading is
missing a piece of information that tells the card reader about the length of the card and
that warns the card reader that the card is finished.

The card reader has no "smarts". Its operation relies solely on the switches and the CPU board plus the sense chip speed control. The only data that is on the cards is program info plus for the 67, extra data for checksum, card info and some calculator formatting.

cheers

Tony
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RE: HP-67 - 1612A03018 - Card Reader Advice Requested (was HP-67 - strange behavior) - teenix - 11-02-2019 11:31 PM



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