HP-65 goes on hold after reading a card

[teenix]

I attached an image explaining the data flow while writing a card.

You can see the data on WA WB is between the head switch going low and then high as the card enters and exits the mechanism.

The RA RB data would be similar for a read.

cheers

Tony

(11-16-2020 09:07 AM)albertofenini Wrote:  Thanks Tony,

do you mean that if we put a probe on the HDS pin we should see the flows of data
and see where it stops ?

Do we need to check also RA and RB ?

take care !

(11-15-2020 01:10 PM)teenix Wrote:  You can check the card by monitoring the head switch and the RA/RB data. The data should clearly appear inside the points where the switch operates.

cheers

Tony