Disabling HP65/67 card reader write protect

[Don Shepherd]

(03-08-2019 01:02 AM)Thomas Okken Wrote:  

(03-08-2019 12:47 AM)Don Shepherd Wrote:  Well, I can only vouch for the modified mag card, that worked for me.

OK, I took a deep breath and cut an actual magnetic card, and tried with that. It went in a lot farther than the cardboard strip before encountering resistance, and I was finally able to get a write-protected card to pass through without Error. Progress!

Unfortunately, the re-written card still gives me Error when I try to read it back. Could be the card itself has gone bad, or maybe I just need to experiment some more to find out exactly how deep the cut-off card should be inserted. Enough for today; to be continued...

Hey, how about an old 80-column IBM card, repurposed to rescue HP-65 mag cards! Think of the history; a card from the 1950's rescuing a card from the 1970's, in 2019!

Now, if only you had an IBM card .....